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< p class = "- topic/p p" data-ofbid = "d54934e31__20250409171035" > < span class = "- topic/ph ph" > Luban-Lite< / span > SDK 支持多个芯片平台，在 BringUp 之前，务必确认板卡使用的 SoC
具体型号以配置正确的引脚和内存。遵照以下流程确认相应的 SoC 型号并修改配置：< / p >
< div class = "- topic/p p" data-ofbid = "d54934e36__20250409171035" >
< ol class = "- topic/ol ol" id = "id__ol_q4w_f31_w2c" data-ofbid = "id__ol_q4w_f31_w2c" >
< li class = "- topic/li li" data-ofbid = "d54934e40__20250409171035" > 确认 SoC 的具体型号并阅读对应的芯片用户手册 —— 引脚复用章节，确认每个引脚能提供的功能。< p class = "- topic/p p" data-ofbid = "d54934e42__20250409171035" > 下图是 D13x 功能复用表示例，其中 PA0 功能 1
为普通 GPIO 口，功能 5 为 UART0_TX： < / p > < div class = "- topic/p p" data-ofbid = "d54934e44__20250409171035" >
< br / > < div class = "imagecenter" > < img class = "- topic/image image imagecenter" id = "id__image_tkw_z31_w2c" src = "../../../images/bringup/lite_bringup_d13x_pinmux.png" / > < / div > < br / >
< / div > < / li >
< li class = "- topic/li li" data-ofbid = "d54934e52__20250409171035" > 打开 SoC 的
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< span class = "+ topic/ph sw-d/filepath ph filepath" > target/< var class = "+ topic/keyword sw-d/varname keyword varname" > SoC< / var > /< var class = "+ topic/keyword sw-d/varname keyword varname" > board< / var > /pinmux.c< / span >
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引脚定义文件，配置引脚数量。< p class = "- topic/p p" data-ofbid = "d54934e63__20250409171035" > < span class = "- topic/ph ph" > Luban-Lite< / span > SDK 各个开发板引脚定义在
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< span class = "+ topic/ph sw-d/filepath ph filepath" > target/< var class = "+ topic/keyword sw-d/varname keyword varname" > SoC< / var > /< var class = "+ topic/keyword sw-d/varname keyword varname" > board< / var > /pinmux.c< / span >
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文件中。SDK 中对于 SoC 支持的引脚数量没有显式限制。< / p > < / li >
< li class = "- topic/li li" data-ofbid = "d54934e77__20250409171035" > 根据芯片用户手册及板卡的原理图，确定对应的引脚功能，并在
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< span class = "+ topic/ph sw-d/filepath ph filepath" > target/< var class = "+ topic/keyword sw-d/varname keyword varname" > SoC< / var > /< var class = "+ topic/keyword sw-d/varname keyword varname" > board< / var > /pinmux.c< / span >
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引脚定义文件中配置引脚功能。< p class = "- topic/p p" data-ofbid = "d54934e88__20250409171035" > < / p > < p class = "- topic/p p" data-ofbid = "d54934e89__20250409171035" > 每个引脚同时只能被设置成一种功能，每个 pin 脚的配置，使用结构体描述。< / p > < div class = "- topic/p p" data-ofbid = "d54934e91__20250409171035" >
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< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__pre_dk4_trv_1dc" data-ofbid = "id__pre_dk4_trv_1dc" > < strong class = "hl-keyword" > struct< / strong > aic_pinmux
{
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< strong class = "hl-keyword" > unsigned< / strong > < strong class = "hl-keyword" > char< / strong > func; < strong class = "+ topic/ph hi-d/b ph b" > < em class = "hl-comment" > // 功能编号< / em > < / strong >
< strong class = "hl-keyword" > unsigned< / strong > < strong class = "hl-keyword" > char< / strong > bias; < strong class = "+ topic/ph hi-d/b ph b" > < em class = "hl-comment" > // 内部上下拉设置，一般无需修改< / em > < / strong >
< strong class = "hl-keyword" > unsigned< / strong > < strong class = "hl-keyword" > char< / strong > drive; < strong class = "+ topic/ph hi-d/b ph b" > < em class = "hl-comment" > // 驱动能力，一般不需要修改< / em > < / strong >
< strong class = "hl-keyword" > char< / strong > * name; < strong class = "+ topic/ph hi-d/b ph b" > < em class = "hl-comment" > // 引脚名称字符串，例如 "PA.0"< / em > < / strong >
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};
< / pre >
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< / div > < div class = "- topic/p p" data-ofbid = "d54934e108__20250409171035" > 例如 PA.0 和 PA.1
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引脚：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__pre_evv_trv_1dc" data-ofbid = "id__pre_evv_trv_1dc" > < 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 > }, < em class = "hl-comment" > // PA.0 配置功能 5， < / em >
{< span class = "hl-number" > 5< / span > , PIN_PULL_DIS, < span class = "hl-number" > 3< / span > , < span class = "hl-string" > "PA.1"< / span > }, < em class = "hl-comment" > // PA.1 配置功能 5， < / em >
#endif
...
}；
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< / pre > < / div > < p class = "- topic/p p" data-ofbid = "d54934e112__20250409171035" > 更改接口配置时，确保 pinmux 没有冲突，对于 V1.1.2 及以后的 SDK，
冲突会有提示警告，警告示例如下:< / p > < div class = "- topic/p p" data-ofbid = "d54934e114__20250409171035" >
< br / > < div class = "imagecenter" > < img class = "- topic/image image imagecenter" id = "id__image_k4b_gm1_w2c" src = "../../../images/bringup/lite_bringup_pinmux_conflix.png" width = "576" / > < / div > < br / >
< / div > < p class = "- topic/p p" data-ofbid = "d54934e118__20250409171035" > 如有冲突,说明一个管脚配置了多个功能，需要修改掉。< / p > < / li >
< li class = "- topic/li li" data-ofbid = "d54934e123__20250409171035" > 在特殊情况下，可能需要配置烧录引脚，否则可略过此步。< p class = "- topic/p p" data-ofbid = "d54934e125__20250409171035" > 在拉低烧录引脚后上电开机的情况下，可以让芯片进入烧录模式 。正常情况下， ，
默认配置的 PA0 作为烧录引脚。< / p > < div class = "- topic/p p" data-ofbid = "d54934e127__20250409171035" > 按照下列说明更改烧录引脚：< ul class = "- topic/ul ul" id = "id__ul_om1_vks_x2c" data-ofbid = "id__ul_om1_vks_x2c" >
< li class = "- topic/li li" data-ofbid = "d54934e131__20250409171035" > D12x/ D13x 配置
< span class = "+ topic/ph sw-d/filepath ph filepath" > /target/SoC/board/pack/pbp_cfg.json< / span >
文件< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_o1m_ykb_w2c" data-ofbid = "id__codeblock_o1m_ykb_w2c" > < span class = "hl-string" > "upgmode"< / span > : { < em class = "hl-comment" > // Set PIN to enter BROM's upgrading mode< / em >
< em class = "hl-comment" > // If set upgmode_pin_cfg_reg to "0", disable bootpin detect in PBP< / em >
< span class = "hl-string" > "upgmode_pin_cfg_reg"< / span > : < span class = "hl-string" > "0x18700080"< / span > , < em class = "hl-comment" > // PINMUX REG, PA0< / em >
< span class = "hl-string" > "upgmode_pin_cfg_val"< / span > : < span class = "hl-string" > "0x10321"< / span > , < em class = "hl-comment" > // PINMUX VAL< / em >
< span class = "hl-string" > "upgmode_pin_input_reg"< / span > : < span class = "hl-string" > "0x18700000"< / span > , < em class = "hl-comment" > // INPUT VAL REG< / em >
< span class = "hl-string" > "upgmode_pin_input_msk"< / span > : < span class = "hl-string" > "0x1"< / span > , < em class = "hl-comment" > // Bit MSK< / em >
< span class = "hl-string" > "upgmode_pin_input_val"< / span > : < span class = "hl-string" > "0x0"< / span > , < em class = "hl-comment" > // Bit VAL< / em >
< span class = "hl-string" > "upgmode_pin_pullup_dly"< / span > : < span class = "hl-string" > "500"< / span > , < em class = "hl-comment" > // us< / em >
},< / pre >
< / li >
< li class = "- topic/li li" data-ofbid = "d54934e140__20250409171035" > D21x 配置 < span class = "+ topic/ph sw-d/filepath ph filepath" > /target/SoC/board/pack/ddr_init.json
< / span > 文件< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_dgj_clb_w2c" data-ofbid = "id__codeblock_dgj_clb_w2c" > < span class = "hl-string" > "upgmode"< / span > : { < em class = "hl-comment" > // Set PIN to enter BROM's upgrading mode< / em >
< em class = "hl-comment" > // If set upgmode_pin_cfg_reg to "0", disable bootpin detect in PBP< / em >
< span class = "hl-string" > "upgmode_pin_cfg_reg"< / span > : < span class = "hl-string" > "0x18700080"< / span > , < em class = "hl-comment" > // PINMUX REG, PA0< / em >
< span class = "hl-string" > "upgmode_pin_cfg_val"< / span > : < span class = "hl-string" > "0x10321"< / span > , < em class = "hl-comment" > // PINMUX VAL< / em >
< span class = "hl-string" > "upgmode_pin_input_reg"< / span > : < span class = "hl-string" > "0x18700000"< / span > , < em class = "hl-comment" > // INPUT VAL REG< / em >
< span class = "hl-string" > "upgmode_pin_input_msk"< / span > : < span class = "hl-string" > "0x1"< / span > , < em class = "hl-comment" > // Bit MSK< / em >
< span class = "hl-string" > "upgmode_pin_input_val"< / span > : < span class = "hl-string" > "0x0"< / span > , < em class = "hl-comment" > // Bit VAL< / em >
< span class = "hl-string" > "upgmode_pin_pullup_dly"< / span > : < span class = "hl-string" > "500"< / span > , < em class = "hl-comment" > // n * 1us delay, limited to between 500us and 100ms< / em >
},< / pre >
< / li >
< / ul > < / div > < / li >
< li class = "- topic/li li" data-ofbid = "d54934e150__20250409171035" > 如果板子设计使用了内部 LDO 给 CPU 供电，则需要使能内部 LDO， < p class = "- topic/p p" data-ofbid = "d54934e152__20250409171035" > 配置内置 LDO 供电的方法如下：< / p > < div class = "- topic/p p" data-ofbid = "d54934e154__20250409171035" >
< ol class = "- topic/ol ol" type = "a" id = "id__ol_u34_y2b_y2c" data-ofbid = "id__ol_u34_y2b_y2c" >
< li class = "- topic/li li" data-ofbid = "d54934e158__20250409171035" > bootloader 配置使能 LDO:1.1.0(含)之后的 SDK， < pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_g4f_4mb_w2c" data-ofbid = "id__codeblock_g4f_4mb_w2c" > Board options> Using Syscfg> Syscfg Parameter
[*] SYSCFG LDO1X enable --->
(< span class = "hl-number" > 8< / span > ) LDO1X voltage value level < < span class = "hl-number" > 0< / span > -< span class = "hl-number" > 15< / span > > < / pre > < / li >
< li class = "- topic/li li" data-ofbid = "d54934e163__20250409171035" > rt-thread 配置使能 LDO:1.1.0(含) 之后的 SDK，
之前 SDK 需要先 lunch 到 rt-thread 配置再 me 命令打开 rt-thread
配置。< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_qjk_p4b_w2c" data-ofbid = "id__codeblock_qjk_p4b_w2c" > Board options> Using Syscfg> Syscfg Parameter
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[*] SYSCFG LDO1X enable --->
(< span class = "hl-number" > 8< / span > ) LDO1X voltage value level < < span class = "hl-number" > 0< / span > -< span class = "hl-number" > 15< / span > > < / pre > < / li >
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