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Read time: 13 minute(s)
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< section class = "- topic/section section" id = "id__section_ubd_v3n_fdc" data-ofbid = "id__section_ubd_v3n_fdc" > < h2 class = "- topic/title title sectiontitle" > 信息配置< / h2 >
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< p class = "- topic/p p" data-ofbid = "d46701e35__20250409171034" > SDK 中 UART 的配置信息包括< / p >
< ul class = "- topic/ul ul simple" id = "id__ul_ccd_v3n_fdc" data-ofbid = "id__ul_ccd_v3n_fdc" >
< li class = "- topic/li li" data-ofbid = "d46701e40__20250409171034" >
< p class = "- topic/p p" data-ofbid = "d46701e42__20250409171034" > SoC 配置： Kconfig.chip< / p >
< / li >
< li class = "- topic/li li" data-ofbid = "d46701e46__20250409171034" >
< p class = "- topic/p p" data-ofbid = "d46701e48__20250409171034" > 开发板配置： < / p >
< / li >
< li class = "- topic/li li" data-ofbid = "d46701e52__20250409171034" >
< p class = "- topic/p p" data-ofbid = "d46701e54__20250409171034" > Pimux 配置： < / p >
< / li >
< li class = "- topic/li li" data-ofbid = "d46701e58__20250409171034" >
< p class = "- topic/p p" data-ofbid = "d46701e60__20250409171034" > 设备配置： < / p >
< / li >
< / ul >
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< div class = "- topic/div div section" id = "id__soc" >
< strong class = "+ topic/ph hi-d/b ph b" > SoC 配置< / strong >
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< p class = "- topic/p p" data-ofbid = "d46701e70__20250409171034" > SoC 的 UART 模块的基础信息配置在 bsp/artinchip/sys/soc name/Kconfig.chip 中设置< / p > < ul class = "- topic/ul ul simple" id = "id__ul_dcd_v3n_fdc" data-ofbid = "id__ul_dcd_v3n_fdc" >
< li class = "- topic/li li" data-ofbid = "d46701e74__20250409171034" >
< p class = "- topic/p p" data-ofbid = "d46701e76__20250409171034" > 驱动版本信息< / p >
< / li >
< li class = "- topic/li li" data-ofbid = "d46701e80__20250409171034" >
< p class = "- topic/p p" data-ofbid = "d46701e82__20250409171034" > UART 数目信息< / p >
< / li >
< / ul > < pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_ecd_v3n_fdc" data-ofbid = "id__codeblock_ecd_v3n_fdc" > config AIC_UART_DRV
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bool
< strong class = "hl-keyword" > default< / strong > n
config AIC_UART_DRV_V10
bool
< strong class = "hl-keyword" > default< / strong > y < strong class = "hl-keyword" > if< / strong > AIC_UART_DRV
config AIC_UART_DRV_VER
string
< strong class = "hl-keyword" > default< / strong > < span class = "hl-string" > "10"< / span > < strong class = "hl-keyword" > if< / strong > AIC_UART_DRV_V10
config AIC_UART_DEV_NUM
< strong class = "hl-keyword" > int< / strong >
< strong class = "hl-keyword" > default< / strong > < span class = "hl-number" > 8< / span > < strong class = "hl-keyword" > if< / strong > AIC_UART_DRV< / pre >
< / div >
< div class = "- topic/div div section" id = "id__id3" >
< strong class = "+ topic/ph hi-d/b ph b" > 开发板配置< / strong >
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< p class = "- topic/p p" data-ofbid = "d46701e95__20250409171034" > 在 target/soc name/board name/Kconfig.board 中完成某一开发板中 UART 的相关信息设置， 一般会配置需要的 UART
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端口 < / p > < pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_fcd_v3n_fdc" data-ofbid = "id__codeblock_fcd_v3n_fdc" > config AIC_USING_UART0
bool < span class = "hl-string" > "Using uart0"< / span >
< strong class = "hl-keyword" > default< / strong > n
select AIC_UART_DRV
config AIC_USING_UART1
bool < span class = "hl-string" > "Using uart1"< / span >
< strong class = "hl-keyword" > default< / strong > n
select AIC_UART_DRV< / pre > < / div >
< div class = "- topic/div div section" id = "id__pinmux" >
< strong class = "+ topic/ph hi-d/b ph b" > Pinmux< / strong >
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< p class = "- topic/p p" data-ofbid = "d46701e106__20250409171034" > 在 target/soc name/board name/pinmux.c 中配置 UART 端口的
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pinmux< / p > < pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_gcd_v3n_fdc" data-ofbid = "id__codeblock_gcd_v3n_fdc" > < strong class = "hl-keyword" > struct< / strong > aic_pinmux aic_pinmux_config[] = {
...
#ifdef AIC_USING_UART0
< em class = "hl-comment" > /* uart0 */< / em >
{< span class = "hl-number" > 5< / span > , PIN_PULL_DIS, < span class = "hl-number" > 3< / span > , < span class = "hl-string" > "PA.0"< / span > },
{< span class = "hl-number" > 5< / span > , PIN_PULL_DIS, < span class = "hl-number" > 3< / span > , < span class = "hl-string" > "PA.1"< / span > },
#endif< / pre >
< / div >
< div class = "- topic/div div section" id = "id__id4" >
< strong class = "+ topic/ph hi-d/b ph b" > 设备配置< / strong >
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< p class = "- topic/p p" data-ofbid = "d46701e117__20250409171034" > 在 bsp/artinchip/drv/uart/Kconfig.dev 中设置设备的工作参数< / p > < ul class = "- topic/ul ul simple" id = "id__ul_hcd_v3n_fdc" data-ofbid = "id__ul_hcd_v3n_fdc" >
< li class = "- topic/li li" data-ofbid = "d46701e121__20250409171034" >
< p class = "- topic/p p" data-ofbid = "d46701e123__20250409171034" > clock< / p >
< / li >
< li class = "- topic/li li" data-ofbid = "d46701e127__20250409171034" >
< p class = "- topic/p p" data-ofbid = "d46701e129__20250409171034" > baudrate< / p >
< / li >
< li class = "- topic/li li" data-ofbid = "d46701e133__20250409171034" >
< p class = "- topic/p p" data-ofbid = "d46701e135__20250409171034" > data bites< / p >
< / li >
< li class = "- topic/li li" data-ofbid = "d46701e139__20250409171034" >
< p class = "- topic/p p" data-ofbid = "d46701e141__20250409171034" > stop bits< / p >
< / li >
< li class = "- topic/li li" data-ofbid = "d46701e145__20250409171034" >
< p class = "- topic/p p" data-ofbid = "d46701e147__20250409171034" > parity< / p >
< / li >
< li class = "- topic/li li" data-ofbid = "d46701e152__20250409171034" >
< p class = "- topic/p p" data-ofbid = "d46701e154__20250409171034" > function< / p >
< / li >
< / ul > < pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_icd_v3n_fdc" data-ofbid = "id__codeblock_icd_v3n_fdc" > config AIC_DEV_UART0_BAUDRATE
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< strong class = "hl-keyword" > int< / strong > < span class = "hl-string" > "uart0 baudrate"< / span >
< strong class = "hl-keyword" > default< / strong > < span class = "hl-number" > 115200< / span >
config AIC_DEV_UART0_DATABITS
< strong class = "hl-keyword" > int< / strong > < span class = "hl-string" > "uart0 data bits"< / span >
range < span class = "hl-number" > 0< / span > < span class = "hl-number" > 15< / span >
< strong class = "hl-keyword" > default< / strong > < span class = "hl-number" > 8< / span >
config AIC_DEV_UART0_STOPBITS
< strong class = "hl-keyword" > int< / strong > < span class = "hl-string" > "uart0 stop bits"< / span >
range < span class = "hl-number" > 0< / span > < span class = "hl-number" > 3< / span >
< strong class = "hl-keyword" > default< / strong > < span class = "hl-number" > 1< / span > < / pre > < / div >
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< / section >
< section class = "- topic/section section" id = "id__section_wbd_v3n_fdc" data-ofbid = "id__section_wbd_v3n_fdc" > < h2 class = "- topic/title title sectiontitle" > 源码说明< / h2 >
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< p class = "- topic/p p" data-ofbid = "d46701e168__20250409171034" > UART 的功能通过三层包装实现：< / p >
< ul class = "- topic/ul ul simple" id = "id__ul_jcd_v3n_fdc" data-ofbid = "id__ul_jcd_v3n_fdc" >
< li class = "- topic/li li" data-ofbid = "d46701e173__20250409171034" >
< p class = "- topic/p p" data-ofbid = "d46701e175__20250409171034" > HAL 层： bsp/artinchip/hal/uart/aic_hal_uart.c< / p >
< / li >
< li class = "- topic/li li" data-ofbid = "d46701e179__20250409171034" >
< p class = "- topic/p p" data-ofbid = "d46701e181__20250409171034" > 驱动层： bsp/artinchip/drv/uart/aic_drv_uart.c< / p >
< / li >
< li class = "- topic/li li" data-ofbid = "d46701e185__20250409171034" >
< p class = "- topic/p p" data-ofbid = "d46701e187__20250409171034" > 应用层： kernel/rt-thread/components/drivers/serial/serial.c< / p >
< / li >
< / ul >
< / section >
< section class = "- topic/section section" id = "id__section_xbd_v3n_fdc" data-ofbid = "id__section_xbd_v3n_fdc" > < h2 class = "- topic/title title sectiontitle" > HAL 层< / h2 >
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< p class = "- topic/p p" data-ofbid = "d46701e198__20250409171034" > HAL 层主要完成对寄存的操作，对基础功能块的封装< / p >
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< div class = "- topic/div div section" id = "id__id6" >
< strong class = "+ topic/ph hi-d/b ph b" > 寄存器< / strong >
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< div class = "- topic/p p" data-ofbid = "d46701e208__20250409171034" > 代码中通过一个数据结构来完整的保存寄存器的数据，对数据结构变量的操作将直接操作到对寄存器< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_xzw_zhn_fdc" data-ofbid = "id__codeblock_xzw_zhn_fdc" > < strong class = "hl-keyword" > typedef< / strong > < strong class = "hl-keyword" > struct< / strong >
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{
< strong class = "hl-keyword" > union< / strong >
{
__IM uint32_t RBR; < em class = "hl-comment" > /* Offset: 0x000 (R/ ) Receive buffer register */< / em >
__OM uint32_t THR; < em class = "hl-comment" > /* Offset: 0x000 ( /W) Transmission hold register */< / em >
__IOM uint32_t DLL; < em class = "hl-comment" > /* Offset: 0x000 (R/W) Clock frequency division low section register */< / em >
};
< strong class = "hl-keyword" > union< / strong >
{
__IOM uint32_t DLH; < em class = "hl-comment" > /* Offset: 0x004 (R/W) Clock frequency division high section register */< / em >
__IOM uint32_t IER; < em class = "hl-comment" > /* Offset: 0x004 (R/W) Interrupt enable register */< / em >
};
< strong class = "hl-keyword" > union< / strong >
{
__IM uint32_t IIR; < em class = "hl-comment" > /* Offset: 0x008 (R/ ) Interrupt indicia register */< / em >
__IOM uint32_t FCR; < em class = "hl-comment" > /* Offset: 0x008 (W) FIFO control register */< / em >
};
__IOM uint32_t LCR; < em class = "hl-comment" > /* Offset: 0x00C (R/W) Transmission control register */< / em >
__IOM uint32_t MCR; < em class = "hl-comment" > /* Offset: 0x010 (R/W) Modem Control register */< / em >
__IM uint32_t LSR; < em class = "hl-comment" > /* Offset: 0x014 (R/ ) Transmission state register */< / em >
__IM uint32_t MSR; < em class = "hl-comment" > /* Offset: 0x018 (R/ ) Modem state register */< / em >
uint32_t RESERVED1[< span class = "hl-number" > 24< / span > ]; < span class = "hl-tag-doctype-comment" > /**/
__IM uint32_t USR; /* Offset: 0x07c (R/ ) UART state register */< / span >
uint32_t RESERVED2[< span class = "hl-number" > 1< / span > ];
__IM uint32_t RFL; < em class = "hl-comment" > /* Offset: 0x084 (R/ ) UART rx fifo level register */< / em >
__IOM uint32_t HSK; < em class = "hl-comment" > /* Offset: 0x088 (R/W) UART dma hsk register */< / em >
uint32_t RESERVED3[< span class = "hl-number" > 6< / span > ];
__IOM uint32_t HALT; < em class = "hl-comment" > /* Offset: 0x0A4 */< / em >
} aic_usart_reg_t;< / pre > < / div > < / div >
< div class = "- topic/div div section" id = "id__id7" >
< strong class = "+ topic/ph hi-d/b ph b" > 扩展寄存器< / strong >
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< div class = "- topic/p p" data-ofbid = "d46701e218__20250409171034" > 扩展寄存器是 ArtInChip 的特殊寄存器，从 0XB8
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地址开始，采用和寄存一样的使用方式< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_xsn_13n_fdc" data-ofbid = "id__codeblock_xsn_13n_fdc" > < strong class = "hl-keyword" > typedef< / strong > < strong class = "hl-keyword" > struct< / strong >
{
__IOM uint32_t RS485DE; < em class = "hl-comment" > /* Offset: 0x0B8 (R/W ) RS485 DE Time register*/< / em >
uint32_t RESERVED0;
__IOM uint32_t RS485CTL; < em class = "hl-comment" > /* Offset: 0x0C0 (R/W ) RS485 Control and Status register*/< / em >
__IOM uint32_t RS485AM; < em class = "hl-comment" > /* Offset: 0x0C4 (R/W ) RS485 Address Match register*/< / em >
__IOM uint32_t RS485BIC; < em class = "hl-comment" > /* Offset: 0x0C8 (R/W ) RS485 Bus Idle Check register*/< / em >
} aic_usart_exreg_t;< / pre > < / div > < / div >
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< / section >
< section class = "- topic/section section" id = "id__section_ybd_v3n_fdc" data-ofbid = "id__section_ybd_v3n_fdc" > < h2 class = "- topic/title title sectiontitle" > 接口设计< / h2 >
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< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_q5w_n3n_fdc" data-ofbid = "id__table_q5w_n3n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 1< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > hal_usart_initialize< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_q5w_n3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e246__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_q5w_n3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e250__20250409171034" > static int hal_usart_initialize(int32_t idx, usart_event_cb_t
cb_event, void *handler)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_q5w_n3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e260__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_q5w_n3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e264__20250409171034" > 初始化 UART 端口< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_q5w_n3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e271__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_q5w_n3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e275__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > index - UART 端口号< / div >
< div class = "- topic/div div" > cb_event - event call back< / div >
< div class = "- topic/div div" > handler - 生成的工作句柄< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_q5w_n3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e294__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_q5w_n3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e298__20250409171034" > 0， ； < 0， < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_q5w_n3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e305__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_q5w_n3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e309__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_zf1_43n_fdc" data-ofbid = "id__table_zf1_43n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 2< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > hal_usart_uninitialize < / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_zf1_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e332__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_zf1_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e336__20250409171034" > int hal_usart_uninitialize(void *handler)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_zf1_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e346__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_zf1_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e350__20250409171034" > 关闭 UART 端口< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_zf1_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e357__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_zf1_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e361__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > handler - UART 句柄< / div >
< div class = "- topic/div div" > cb_event - event call back< / div >
< div class = "- topic/div div" > handler - 生产的工作句柄< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_zf1_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e380__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_zf1_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e384__20250409171034" > 0， ； < 0， < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_zf1_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e391__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_zf1_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e395__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_tyd_43n_fdc" data-ofbid = "id__table_tyd_43n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 3< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > hal_usart_config< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_tyd_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e418__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_tyd_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e422__20250409171034" > int hal_usart_config(usart_handle_t handle, ……)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_tyd_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e432__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_tyd_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e436__20250409171034" > 配置 UART 的工作参数< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_tyd_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e443__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_tyd_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e447__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > handle - UART 句柄< / div >
< div class = "- topic/div div" > baud - 波特率< / div >
< div class = "- topic/div div" > mode - 工作模式，同步还是异步< / div >
< div class = "- topic/div div" > parity - 极性< / div >
< div class = "- topic/div div" > stopbits - 停止位< / div >
< div class = "- topic/div div" > bits - 数据位< / div >
< div class = "- topic/div div" > func - 功能， ， < / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_tyd_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e479__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_tyd_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e483__20250409171034" > 0， ； < 0， < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_tyd_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e490__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_tyd_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e494__20250409171034" > - < / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_rrg_43n_fdc" data-ofbid = "id__table_rrg_43n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 4< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > hal_usart_send< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_rrg_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e517__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_rrg_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e521__20250409171034" > int32_t al_usart_send(usart_handle_t handle, const void *data,
uint32_t num)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_rrg_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e531__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_rrg_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e535__20250409171034" > 发送数据< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_rrg_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e542__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_rrg_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e546__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > handle - UART 句柄< / div >
< div class = "- topic/div div" > data - 待发送数据< / div >
< div class = "- topic/div div" > num - 数据长度< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_rrg_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e565__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_rrg_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e569__20250409171034" > 0， ； < 0， < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_rrg_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e576__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_rrg_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e580__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_yhj_43n_fdc" data-ofbid = "id__table_yhj_43n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 5< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > hal_usart_receive< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_yhj_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e604__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_yhj_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e608__20250409171034" > int32_t hal_usart_receive(usart_handle_t handle, void *data,
uint32_t num)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_yhj_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e618__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_yhj_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e622__20250409171034" > 接收数据< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_yhj_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e629__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_yhj_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e633__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > handle - UART 句柄< / div >
< div class = "- topic/div div" > data - 接收数据 buffer< / div >
< div class = "- topic/div div" > num - 要接收的数据长度< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_yhj_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e652__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_yhj_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e656__20250409171034" > 0， ； < 0， < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_yhj_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e663__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_yhj_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e667__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_wyl_43n_fdc" data-ofbid = "id__table_wyl_43n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 6< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > hal_usart_receive_query< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_wyl_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e690__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_wyl_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e694__20250409171034" > int32_t hal_usart_receive_query(usart_handle_t handle, void
*data, uint32_t num)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_wyl_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e704__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_wyl_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e708__20250409171034" > 查询要接收的数据的长度< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_wyl_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e715__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_wyl_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e719__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > handle - UART 句柄< / div >
< div class = "- topic/div div" > data - 接收数据 buffer< / div >
< div class = "- topic/div div" > num - buffer 的大小< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_wyl_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e738__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_wyl_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e742__20250409171034" > 长度< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_wyl_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e749__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_wyl_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e753__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_iv4_43n_fdc" data-ofbid = "id__table_iv4_43n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 7< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > hal_usart_get_status< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_iv4_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e776__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_iv4_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e780__20250409171034" > usart_status_t hal_usart_get_status(usart_handle_t
handle)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_iv4_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e790__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_iv4_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e794__20250409171034" > 获取 UART 的状态< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_iv4_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e801__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_iv4_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e805__20250409171034" > handle - UART 句柄< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_iv4_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e812__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_iv4_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e816__20250409171034" > 状态值< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_iv4_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e823__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_iv4_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e827__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_zvt_43n_fdc" data-ofbid = "id__table_zvt_43n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 8< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > hal_usart_flush< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_zvt_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e850__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_zvt_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e854__20250409171034" > int32_t hal_usart_flush(usart_handle_t handle, usart_flush_type_e
type)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_zvt_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e864__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_zvt_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e868__20250409171034" > flush 发送或接收的数据< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_zvt_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e875__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_zvt_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e879__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > handle - UART 句柄< / div >
< div class = "- topic/div div" > type - 发送或者接收< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_zvt_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e895__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_zvt_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e899__20250409171034" > 0， ； < 0， < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_zvt_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e906__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_zvt_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e910__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_f4w_43n_fdc" data-ofbid = "id__table_f4w_43n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 9< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > hal_usart_config_flowctrl< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_f4w_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e933__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_f4w_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e937__20250409171034" > int32_t hal_usart_config_flowctrl(usart_handle_t handle，
usart_flowctrl_type_e flowctrl_type)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_f4w_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e947__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_f4w_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e951__20250409171034" > 配置 UART 的流控< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_f4w_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e958__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_f4w_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e962__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > handle - UART 句柄< / div >
< div class = "- topic/div div" > flowctrl_type - 流控类型< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_f4w_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e978__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_f4w_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e982__20250409171034" > 0， ； < 0， < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_f4w_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e989__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_f4w_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e993__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_jdz_43n_fdc" data-ofbid = "id__table_jdz_43n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 10< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > hal_uart_set_fifo< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_jdz_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1016__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_jdz_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1020__20250409171034" > int32_t hal_uart_set_fifo(usart_handle_t handle)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_jdz_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1030__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_jdz_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1034__20250409171034" > 设置 UART-DMA 模式下 rx_fifo 和 tx_fifo 的触发阈值< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_jdz_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1041__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_jdz_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1045__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > handle - UART 句柄< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_jdz_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1058__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_jdz_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1062__20250409171034" > 0， < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_jdz_43n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1069__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_jdz_43n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1073__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_ndc_p3n_fdc" data-ofbid = "id__table_ndc_p3n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 11< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > hal_usart_set_hsk< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_ndc_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1097__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_ndc_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1101__20250409171034" > int32_t hal_usart_set_hsk(usart_handle_t handle)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_ndc_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1111__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_ndc_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1115__20250409171034" > 配置 UART-DMA 握手模式< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_ndc_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1122__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_ndc_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1126__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > handle - UART 句柄< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_ndc_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1139__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_ndc_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1143__20250409171034" > 0， < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_ndc_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1150__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_ndc_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1154__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_vvg_p3n_fdc" data-ofbid = "id__table_vvg_p3n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 12< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > hal_usart_get_rx_fifo_num< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_vvg_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1177__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_vvg_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1181__20250409171034" > int32_t hal_usart_get_rx_fifo_num(usart_handle_t handle)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_vvg_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1191__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_vvg_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1195__20250409171034" > 读取 rx_fifo 里面的数据量< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_vvg_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1202__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_vvg_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1206__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > handle - UART 句柄< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_vvg_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1219__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_vvg_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1223__20250409171034" > fifo_num， < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_vvg_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1230__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_vvg_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1234__20250409171034" > - < / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_xwj_p3n_fdc" data-ofbid = "id__table_xwj_p3n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 13< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > hal_uart_rx_dma_config< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_xwj_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1257__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_xwj_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1261__20250409171034" > int32_t hal_uart_rx_dma_config(usart_handle_t handle, uint8_t
*buf, uint32_t size)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_xwj_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1271__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_xwj_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1275__20250409171034" > 配置 UART-DMA 接收的参数< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_xwj_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1282__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_xwj_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1286__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > handle - UART 句柄< / div >
< div class = "- topic/div div" > buf - DMA 搬运的目标地址< / div >
< div class = "- topic/div div" > size - 搬运数据的大小< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_xwj_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1305__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_xwj_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1309__20250409171034" > 0， < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_xwj_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1316__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_xwj_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1320__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_dgm_p3n_fdc" data-ofbid = "id__table_dgm_p3n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 14< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > hal_uart_send_by_dma< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_dgm_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1343__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_dgm_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1347__20250409171034" > int32_t hal_uart_send_by_dma(usart_handle_t handle, uint8_t *buf,
uint32_t size)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_dgm_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1357__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_dgm_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1361__20250409171034" > 配置 UART-DMA 发送的参数< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_dgm_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1368__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_dgm_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1372__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > handle - UART 句柄< / div >
< div class = "- topic/div div" > buf - DMA 搬运的源端地址< / div >
< div class = "- topic/div div" > size - 搬运数据的大小< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_dgm_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1391__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_dgm_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1395__20250409171034" > 0， < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_dgm_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1402__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_dgm_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1406__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_cn4_p3n_fdc" data-ofbid = "id__table_cn4_p3n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 15< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > hal_usart_halt_tx_enable< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_cn4_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1429__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_cn4_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1433__20250409171034" > int32_t hal_usart_halt_tx_enable(usart_handle_t handle, uint8_t
halt_tx_enable)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_cn4_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1443__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_cn4_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1447__20250409171034" > 控制设备发送数据的开关< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_cn4_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1454__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_cn4_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1458__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > handle - UART 句柄< / div >
< div class = "- topic/div div" > halt_tx_enable - 禁止发送使能标志< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_cn4_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1474__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_cn4_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1478__20250409171034" > 0， < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_cn4_p3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1485__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_cn4_p3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1489__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< / section >
< section class = "- topic/section section" id = "id__section_zbd_v3n_fdc" data-ofbid = "id__section_zbd_v3n_fdc" > < h2 class = "- topic/title title sectiontitle" > 驱动层< / h2 >
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< p class = "- topic/p p" data-ofbid = "d46701e1503__20250409171034" > 驱动层通过调用 HAL 层的接口，完成对 UART 设备的驱动实现, 代码在 bsp/artinchip/drv/uart/aic_drv_uart.c< / p >
2025-01-23 16:37:00 +08:00
< div class = "- topic/div div section" id = "id__id10" >
< strong class = "+ topic/ph hi-d/b ph b" > 驱动参数< / strong >
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< div class = "- topic/p p" data-ofbid = "d46701e1511__20250409171034" > 驱动的参数配置通过在 Kconfig
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中的宏来初始化< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_hg5_f3n_fdc" data-ofbid = "id__codeblock_hg5_f3n_fdc" > < strong class = "hl-keyword" > struct< / strong > drv_uart_dev_para
{
uint32_t index :< span class = "hl-number" > 4< / span > ;
uint32_t data_bits :< span class = "hl-number" > 4< / span > ;
uint32_t stop_bits :< span class = "hl-number" > 2< / span > ;
uint32_t parity :< span class = "hl-number" > 2< / span > ;
uint32_t flag;
uint32_t baud_rate;
uint32_t clk_freq;
uint32_t function;
< strong class = "hl-keyword" > char< / strong > * name;
< strong class = "hl-keyword" > char< / strong > * uart_rts_name;
< strong class = "hl-keyword" > char< / strong > * uart_cts_name;
};
< strong class = "hl-keyword" > const< / strong > < strong class = "hl-keyword" > struct< / strong > drv_uart_dev_para uart_dev_paras[] =
{
#ifdef AIC_USING_UART0
{< span class = "hl-number" > 0< / span > , AIC_DEV_UART0_DATABITS, AIC_DEV_UART0_STOPBITS, AIC_DEV_UART0_PARITY, AIC_UART0_FLAG,
AIC_DEV_UART0_BAUDRATE, AIC_CLK_UART0_FREQ, AIC_DEV_UART0_MODE, < span class = "hl-string" > "uart0"< / span > , AIC_UART0_RTS_NAME, AIC_UART0_CTS_NAME},
#endif
#ifdef AIC_USING_UART1
{< span class = "hl-number" > 1< / span > , AIC_DEV_UART1_DATABITS, AIC_DEV_UART1_STOPBITS, AIC_DEV_UART1_PARITY, AIC_UART1_FLAG,
AIC_DEV_UART1_BAUDRATE, AIC_CLK_UART1_FREQ, AIC_DEV_UART1_MODE, < span class = "hl-string" > "uart1"< / span > , AIC_UART1_RTS_NAME, AIC_UART1_CTS_NAME},
#endif
#ifdef AIC_USING_UART2
{< span class = "hl-number" > 2< / span > , AIC_DEV_UART2_DATABITS, AIC_DEV_UART2_STOPBITS, AIC_DEV_UART2_PARITY, AIC_UART2_FLAG,
AIC_DEV_UART2_BAUDRATE, AIC_CLK_UART2_FREQ, AIC_DEV_UART2_MODE, < span class = "hl-string" > "uart2"< / span > , AIC_UART2_RTS_NAME, AIC_UART2_CTS_NAME},
#endif
#ifdef AIC_USING_UART3
{< span class = "hl-number" > 3< / span > , AIC_DEV_UART3_DATABITS, AIC_DEV_UART3_STOPBITS, AIC_DEV_UART3_PARITY, AIC_UART3_FLAG,
AIC_DEV_UART3_BAUDRATE, AIC_CLK_UART3_FREQ, AIC_DEV_UART3_MODE, < span class = "hl-string" > "uart3"< / span > , AIC_UART3_RTS_NAME, AIC_UART3_CTS_NAME},
#endif
#ifdef AIC_USING_UART4
{< span class = "hl-number" > 4< / span > , AIC_DEV_UART4_DATABITS, AIC_DEV_UART4_STOPBITS, AIC_DEV_UART4_PARITY, AIC_UART4_FLAG,
AIC_DEV_UART4_BAUDRATE, AIC_CLK_UART4_FREQ, AIC_DEV_UART4_MODE, < span class = "hl-string" > "uart4"< / span > , AIC_UART4_RTS_NAME, AIC_UART4_CTS_NAME},
#endif
#ifdef AIC_USING_UART5
{< span class = "hl-number" > 5< / span > , AIC_DEV_UART5_DATABITS, AIC_DEV_UART5_STOPBITS, AIC_DEV_UART5_PARITY, AIC_UART5_FLAG,
AIC_DEV_UART5_BAUDRATE, AIC_CLK_UART5_FREQ, AIC_DEV_UART5_MODE, < span class = "hl-string" > "uart5"< / span > , AIC_UART5_RTS_NAME, AIC_UART5_CTS_NAME},
#endif
#ifdef AIC_USING_UART6
{< span class = "hl-number" > 6< / span > , AIC_DEV_UART6_DATABITS, AIC_DEV_UART6_STOPBITS, AIC_DEV_UART6_PARITY, AIC_UART6_FLAG,
AIC_DEV_UART6_BAUDRATE, AIC_CLK_UART6_FREQ, AIC_DEV_UART6_MODE, < span class = "hl-string" > "uart6"< / span > , AIC_UART6_RTS_NAME, AIC_UART6_CTS_NAME},
#endif
#ifdef AIC_USING_UART7
{< span class = "hl-number" > 7< / span > , AIC_DEV_UART7_DATABITS, AIC_DEV_UART7_STOPBITS, AIC_DEV_UART7_PARITY, AIC_UART7_FLAG,
AIC_DEV_UART7_BAUDRATE, AIC_CLK_UART7_FREQ, AIC_DEV_UART7_MODE, < span class = "hl-string" > "uart7"< / span > , AIC_UART7_RTS_NAME, AIC_UART7_CTS_NAME},
#endif
};< / pre > < / div > < / div >
< div class = "- topic/div div section" id = "id__id11" >
< strong class = "+ topic/ph hi-d/b ph b" > 初始化< / strong >
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< div class = "- topic/p p" data-ofbid = "d46701e1521__20250409171034" > 初始化工作通过调用 RT-Thread
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的标准初始化接口实现< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_tnf_g3n_fdc" data-ofbid = "id__codeblock_tnf_g3n_fdc" > INIT_BOARD_EXPORT(drv_usart_init);
< strong class = "hl-keyword" > int< / strong > drv_usart_init(< strong class = "hl-keyword" > void< / strong > )
{
< strong class = "hl-keyword" > struct< / strong > serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
< strong class = "hl-keyword" > int< / strong > u = < span class = "hl-number" > 0< / span > ;
< strong class = "hl-keyword" > int< / strong > i = < span class = "hl-number" > 0< / span > ;
< strong class = "hl-keyword" > for< / strong > (i=< span class = "hl-number" > 0< / span > ; i< < strong class = "hl-keyword" > sizeof< / strong > (uart_dev_paras)/< strong class = "hl-keyword" > sizeof< / strong > (< strong class = "hl-keyword" > struct< / strong > drv_uart_dev_para); i++) {
u = uart_dev_paras[i].index;
g_serial[u].ops = & drv_uart_ops;
g_serial[u].config = config;
g_serial[u].config.bufsz = < span class = "hl-number" > 2048< / span > ;
g_serial[u].config.baud_rate = uart_dev_paras[i].baud_rate;
g_serial[u].config.data_bits = uart_dev_paras[i].data_bits;
g_serial[u].config.stop_bits = uart_dev_paras[i].stop_bits - < span class = "hl-number" > 1< / span > ;
g_serial[u].config.parity = uart_dev_paras[i].parity;
g_serial[u].config.function = uart_dev_paras[i].function;
g_serial[u].config.flag = uart_dev_paras[i].flag;
g_serial[u].config.uart_index = uart_dev_paras[i].index;
hal_clk_set_freq(CLK_UART0 + u, uart_dev_paras[i].clk_freq);
hal_clk_enable(CLK_UART0 + u);
hal_reset_assert(RESET_UART0 + u);
aic_udelay(< span class = "hl-number" > 10000< / span > );
hal_reset_deassert(RESET_UART0 + u);
#ifdef FINSH_POLL_MODE
uart_handle[u] = hal_usart_initialize(u, NULL, NULL);
#< strong class = "hl-keyword" > else< / strong >
uart_handle[u] = hal_usart_initialize(u, NULL, drv_usart_irqhandler);
#endif
rt_hw_serial_register(& g_serial[u],
uart_dev_paras[i].name,
#ifdef FINSH_POLL_MODE
RT_DEVICE_FLAG_RDWR,
#< strong class = "hl-keyword" > else< / strong >
uart_dev_paras[i].flag,
#endif
uart_handle[u]);
< strong class = "hl-keyword" > if< / strong > (uart_dev_paras[i].flag == AIC_UART_DMA_FLAG) {
hal_uart_set_fifo((aic_usart_priv_t *)g_serial[u].parent.user_data);
hal_uart_attach_callback((aic_usart_priv_t *)g_serial[u].parent.user_data,
drv_uart_callback, NULL);
hal_usart_set_ier((aic_usart_priv_t *)g_serial[u].parent.user_data, < span class = "hl-number" > 1< / span > );
}
drv_usart_function_init(i, u);
}
< strong class = "hl-keyword" > return< / strong > < span class = "hl-number" > 0< / span > ;
}< / pre > < / div > < / div >
< div class = "- topic/div div section" id = "id__id12" >
< strong class = "+ topic/ph hi-d/b ph b" > 对外接口< / strong >
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< div class = "- topic/p p" data-ofbid = "d46701e1531__20250409171034" > UART 驱动对外的接口主要是实现了 rt_uart_ops 的标准接口，使用 dma_transmit 需要在 menuconfig 打开相应的
2025-01-23 16:37:00 +08:00
uart-dma
使能开关< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_os4_g3n_fdc" data-ofbid = "id__codeblock_os4_g3n_fdc" > < strong class = "hl-keyword" > const< / strong > < strong class = "hl-keyword" > struct< / strong > rt_uart_ops drv_uart_ops =
{
drv_uart_configure,
drv_uart_control,
drv_uart_putc,
drv_uart_getc,
#< strong class = "hl-keyword" > if< / strong > defined (RT_SERIAL_USING_DMA)
drv_uart_dma_transmit,
#endif
};< / pre > < / div > < / div >
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< / section >
< section class = "- topic/section section" id = "id__section_acd_v3n_fdc" data-ofbid = "id__section_acd_v3n_fdc" > < h2 class = "- topic/title title sectiontitle" > 应用层< / h2 >
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< p class = "- topic/p p" data-ofbid = "d46701e1542__20250409171034" > UART 在应用层被封装成了一个标准的设备，通过读写进行数据的发送和接收< / p >
< p class = "- topic/p p" data-ofbid = "d46701e1545__20250409171034" > 设备实现代码：
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使用示例代码：< span class = "+ topic/ph sw-d/filepath ph filepath" > bsp/examples/test-uart/test_uart.c< / span >
< / p >
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< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_rv2_h3n_fdc" data-ofbid = "id__table_rv2_h3n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 16< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > rt_device_find< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_rv2_h3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1567__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_rv2_h3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1571__20250409171034" > rt_device_t rt_device_find(const char *name);< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_rv2_h3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1581__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_rv2_h3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1585__20250409171034" > 找到相应的设备< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_rv2_h3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1592__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_rv2_h3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1596__20250409171034" > name - 设备名< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_rv2_h3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1603__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_rv2_h3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1607__20250409171034" > 设备变量或者 NULL< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_rv2_h3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1614__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_rv2_h3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1618__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_ctf_33n_fdc" data-ofbid = "id__table_ctf_33n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 17< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > rt_device_open< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_ctf_33n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1641__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_ctf_33n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1645__20250409171034" > rt_err_t rt_device_open (rt_device_t dev, rt_uint16_t
oflag);< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_ctf_33n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1655__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_ctf_33n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1659__20250409171034" > 打开设备< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_ctf_33n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1666__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_ctf_33n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1670__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > dev - UART device< / div >
< div class = "- topic/div div" > oflag - 打开参数< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_ctf_33n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1686__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_ctf_33n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1690__20250409171034" > 0， ； < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_ctf_33n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1697__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_ctf_33n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1701__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_t4r_33n_fdc" data-ofbid = "id__table_t4r_33n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 18< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > rt_device_close< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_t4r_33n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1725__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_t4r_33n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1729__20250409171034" > rt_err_t rt_device_close(rt_device_t dev);< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_t4r_33n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1739__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_t4r_33n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1743__20250409171034" > 关闭设备< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_t4r_33n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1750__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_t4r_33n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1754__20250409171034" > dev - 设备名< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_t4r_33n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1761__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_t4r_33n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1765__20250409171034" > 0， ； < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_t4r_33n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1772__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_t4r_33n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1776__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_mxf_j3n_fdc" data-ofbid = "id__table_mxf_j3n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 19< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > rt_device_read< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_mxf_j3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1799__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_mxf_j3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1803__20250409171034" > rt_size_t rt_device_read (rt_device_t dev, rt_off_t pos, void
*buffer, rt_size_t size);< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_mxf_j3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1813__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_mxf_j3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1817__20250409171034" > 接收信息< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_mxf_j3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1824__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_mxf_j3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1828__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > dev - UART device< / div >
< div class = "- topic/div div" > pos - 起始位置< / div >
< div class = "- topic/div div" > buffer - 数据存储区< / div >
< div class = "- topic/div div" > size - 大小< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_mxf_j3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1850__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_mxf_j3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1854__20250409171034" > 接收数据的大小< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_mxf_j3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1861__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_mxf_j3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1865__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "id__table_lll_j3n_fdc" data-ofbid = "id__table_lll_j3n_fdc" data-cols = "2" > < caption class = "- topic/title title tablecap" data-caption-side = "top" data-is-repeated = "true" > < span class = "table--title-label" > 表< span class = "table--title-label-number" > 20< / span > < span class = "table--title-label-punctuation" > . < / span > < / span > < span class = "table--title" > rt_device_write< / span > < / caption > < colgroup > < col style = "width:16.666666666666664%" / > < col style = "width:83.33333333333334%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_lll_j3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1888__20250409171034" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_lll_j3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1892__20250409171034" > rt_size_t rt_device_write (rt_device_t dev, rt_off_t pos, void
*buffer, rt_size_t size);< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_lll_j3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1902__20250409171034" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_lll_j3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1906__20250409171034" > 发送信息< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_lll_j3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1913__20250409171034" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_lll_j3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1917__20250409171034" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > dev - UART device< / div >
< div class = "- topic/div div" > pos - 起始位置< / div >
< div class = "- topic/div div" > buffer - 数据存储区< / div >
< div class = "- topic/div div" > size - 大小< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_lll_j3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1939__20250409171034" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_lll_j3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1943__20250409171034" > 发送数据的大小< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_lll_j3n_fdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d46701e1950__20250409171034" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_lll_j3n_fdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d46701e1954__20250409171034" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< / section >
< section class = "- topic/section section" id = "id__section_bcd_v3n_fdc" data-ofbid = "id__section_bcd_v3n_fdc" > < h2 class = "- topic/title title sectiontitle" > 使用示例< / h2 >
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< div class = "- topic/p p" data-ofbid = "d46701e1967__20250409171034" > 示例可以参考
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bsp/examples/test-uart/test_uart.c< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_ucp_y3n_fdc" data-ofbid = "id__codeblock_ucp_y3n_fdc" > < strong class = "hl-keyword" > static< / strong > rt_device_t serial = rt_device_find(< span class = "hl-string" > "uart1"< / span > );
rt_device_open(serial, RT_DEVICE_FLAG_RDONLY);
rt_device_write(serial, < span class = "hl-number" > 0< / span > , str_send, (< strong class = "hl-keyword" > sizeof< / strong > (str_send) - < span class = "hl-number" > 1< / span > ));
rt_device_read(serial, < span class = "hl-number" > 0< / span > , str_send, < span class = "hl-number" > 1< / span > );< / pre > < / div >
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< / section >
< / div >
< / article > < / main > < / div >
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< / div >
< nav role = "navigation" id = "wh_topic_toc" aria-label = "On this page" class = "col-lg-2 d-none d-lg-block navbar d-print-none" >
< div id = "wh_topic_toc_content" >
< div class = " wh_topic_toc " > < div class = "wh_topic_label" > 在本页上< / div > < ul > < li class = "section-item" > < div class = "section-title" > < a href = "#id__section_ubd_v3n_fdc" data-tocid = "id__section_ubd_v3n_fdc" > 信息配置< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#id__section_wbd_v3n_fdc" data-tocid = "id__section_wbd_v3n_fdc" > 源码说明< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#id__section_xbd_v3n_fdc" data-tocid = "id__section_xbd_v3n_fdc" > HAL 层< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#id__section_ybd_v3n_fdc" data-tocid = "id__section_ybd_v3n_fdc" > 接口设计< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#id__section_zbd_v3n_fdc" data-tocid = "id__section_zbd_v3n_fdc" > 驱动层< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#id__section_acd_v3n_fdc" data-tocid = "id__section_acd_v3n_fdc" > 应用层< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#id__section_bcd_v3n_fdc" data-tocid = "id__section_bcd_v3n_fdc" > 使用示例< / a > < / div > < / li > < / ul > < / div >
< / div >
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< footer class = "navbar navbar-default wh_footer" >
< div class = " footer-container mx-auto " >
< title > footer def< / title >
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< style >
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.p1 {
font-family: FangZhengShuSong, Times, serif;
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.p2 {
font-family: Arial, Helvetica, sans-serif;
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.p3 {
font-family: "Lucida Console", "Courier New", monospace;
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< div class = "generation_time" >
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< / div >
< / footer >
< div id = "go2top" class = "d-print-none" >
< span class = "oxy-icon oxy-icon-up" > < / span >
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< div id = "modal_img_large" class = "modal" >
< span class = "close oxy-icon oxy-icon-remove" > < / span >
< div id = "modal_img_container" > < / div >
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< script src = "${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer = "defer" > < / script >
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