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< span class = "edit-link" style = "font-size:12px; opacity:0.6; text-align:right; vertical-align:middle" > < a target = "_blank" href = "http://aicdocco/taskstopics/sdk/watchdog/watchdog-interface-design-luban-lite.dita" > Edit online< / a > < / span > < h1 class = "- topic/title title topictitle1" id = "ariaid-title1" > 接口设计< / h1 >
< div class = "date inPage" > 9 Apr 2025< / div > < div style = "color: gray;" >
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Read time: 3 minute(s)
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< / div >
< div class = "- topic/body concept/conbody body conbody" >
< section class = "- topic/section section" id = "watchdog_interface_design_luban_lite__driver" data-ofbid = "watchdog_interface_design_luban_lite__driver" > < h2 class = "- topic/title title sectiontitle" > Driver 层接口设计< / h2 >
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< div class = "- topic/p p" data-ofbid = "d160075e38__20250409171049" > 以下接口是 Watchdog
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设备驱动框架的标准接口。< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "watchdog_interface_design_luban_lite__codeblock_ybb_sch_ddc" data-ofbid = "watchdog_interface_design_luban_lite__codeblock_ybb_sch_ddc" > < strong class = "hl-keyword" > struct< / strong > rt_watchdog_ops
{
rt_err_t (*init)(rt_watchdog_t *wdt);
rt_err_t (*control)(rt_watchdog_t *wdt, < strong class = "hl-keyword" > int< / strong > cmd, < strong class = "hl-keyword" > void< / strong > *arg);
};< / pre > < / div >
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< div class = "table-container" > < table class = "- topic/table table frame-all" id = "watchdog_interface_design_luban_lite__table_hl1_kxh_bdc" data-ofbid = "watchdog_interface_design_luban_lite__table_hl1_kxh_bdc" 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" > drv_wdt_init< / 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 = "watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d160075e59__20250409171049" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d160075e63__20250409171049" > rt_err_t drv_wdt_init(rt_watchdog_t *wdt)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d160075e73__20250409171049" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d160075e77__20250409171049" > Watchdog 控制器的初始化< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d160075e84__20250409171049" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d160075e88__20250409171049" > 无< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d160075e95__20250409171049" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d160075e99__20250409171049" > 0， ； < 0， < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d160075e106__20250409171049" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d160075e110__20250409171049" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< div class = "table-container" > < table class = "- topic/table table frame-all" id = "watchdog_interface_design_luban_lite__table_il1_kxh_bdc" data-ofbid = "watchdog_interface_design_luban_lite__table_il1_kxh_bdc" 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" > drv_wdt_control< / 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 = "watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d160075e133__20250409171049" > 函数原型< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d160075e137__20250409171049" > rt_err_t drv_wdt_control(rt_watchdog_t *wdt, int cmd, void
*args)< / p > < / th >
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d160075e147__20250409171049" > 功能说明< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d160075e151__20250409171049" > Watchdog 驱动的 ioctl 接口< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d160075e158__20250409171049" > 参数定义< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d160075e162__20250409171049" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > wdt - 指向 Watchdog 设备< / div >
< div class = "- topic/div div" > cmd - ioctl 命令码< / div >
< div class = "- topic/div div" > args - ioctl 命令相应的参数< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d160075e181__20250409171049" > 返回值< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d160075e185__20250409171049" > 0， ； < 0， < / p > < / td >
< / tr >
< tr class = "- topic/row" >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__1" > < p class = "- topic/p p" data-ofbid = "d160075e192__20250409171049" > 注意事项< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__2" > < p class = "- topic/p p" data-ofbid = "d160075e196__20250409171049" > -< / p > < / td >
< / tr >
< / tbody > < / table > < / div >
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< div class = "- topic/sectiondiv sectiondiv" >
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< p class = "- topic/p p" data-ofbid = "d160075e212__20250409171049" > CMD 命令码可以用于控制 Watchdog 的行为， < / p >
< ul class = "- topic/ul ul" id = "watchdog_interface_design_luban_lite__ul_amx_bfh_ddc" data-ofbid = "watchdog_interface_design_luban_lite__ul_amx_bfh_ddc" >
< li class = "- topic/li li" data-ofbid = "d160075e217__20250409171049" > 标准命令码：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "watchdog_interface_design_luban_lite__codeblock_qgx_tch_ddc" data-ofbid = "watchdog_interface_design_luban_lite__codeblock_qgx_tch_ddc" > #< span class = "hl-directive" > define< / span > RT_DEVICE_CTRL_WDT_GET_TIMEOUT (RT_DEVICE_CTRL_BASE(WDT) + < span class = "hl-number" > 1< / span > ) < em class = "hl-comment" > /* get timeout(in seconds) */< / em >
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#< span class = "hl-directive" > define< / span > RT_DEVICE_CTRL_WDT_SET_TIMEOUT (RT_DEVICE_CTRL_BASE(WDT) + < span class = "hl-number" > 2< / span > ) < em class = "hl-comment" > /* set timeout(in seconds) */< / em >
#< span class = "hl-directive" > define< / span > RT_DEVICE_CTRL_WDT_GET_TIMELEFT (RT_DEVICE_CTRL_BASE(WDT) + < span class = "hl-number" > 3< / span > ) < em class = "hl-comment" > /* get the left time before reboot(in seconds) */< / em >
#< span class = "hl-directive" > define< / span > RT_DEVICE_CTRL_WDT_KEEPALIVE (RT_DEVICE_CTRL_BASE(WDT) + < span class = "hl-number" > 4< / span > ) < em class = "hl-comment" > /* refresh watchdog */< / em >
#< span class = "hl-directive" > define< / span > RT_DEVICE_CTRL_WDT_START (RT_DEVICE_CTRL_BASE(WDT) + < span class = "hl-number" > 5< / span > ) < em class = "hl-comment" > /* start watchdog */< / em >
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#< span class = "hl-directive" > define< / span > RT_DEVICE_CTRL_WDT_STOP (RT_DEVICE_CTRL_BASE(WDT) + < span class = "hl-number" > 6< / span > ) < em class = "hl-comment" > /* stop watchdog */< / em > < / pre > < p class = "- topic/p p" data-ofbid = "d160075e221__20250409171049" > 详见
< span class = "+ topic/ph sw-d/filepath ph filepath" > rt-thread/components/drivers/include/watchdog.h< / span > 。< / p > < / li >
< li class = "- topic/li li" data-ofbid = "d160075e227__20250409171049" > AIC
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特定的命令码< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "watchdog_interface_design_luban_lite__codeblock_z5h_5ch_ddc" data-ofbid = "watchdog_interface_design_luban_lite__codeblock_z5h_5ch_ddc" > #< span class = "hl-directive" > define< / span > RT_DEVICE_CTRL_WDT_SET_IRQ_TIMEOUT (RT_DEVICE_CTRL_BASE(WDT) + < span class = "hl-number" > 7< / span > ) < em class = "hl-comment" > /* set pretimeout(in seconds) */< / em >
#< span class = "hl-directive" > define< / span > RT_DEVICE_CTRL_WDT_IRQ_ENABLE (RT_DEVICE_CTRL_BASE(WDT) + < span class = "hl-number" > 8< / span > ) < em class = "hl-comment" > /* start pretreatment */< / em >
#< span class = "hl-directive" > define< / span > RT_DEVICE_CTRL_WDT_IRQ_DISABLE (RT_DEVICE_CTRL_BASE(WDT) + < span class = "hl-number" > 9< / span > ) < em class = "hl-comment" > /* stop pretreatment */< / em >
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#< span class = "hl-directive" > define< / span > RT_DEVICE_CTRL_WDT_SET_CLR_THD (RT_DEVICE_CTRL_BASE(WDT) + < span class = "hl-number" > 10< / span > ) < em class = "hl-comment" > /* set clear threshold */< / em > < / pre > < p class = "- topic/p p" data-ofbid = "d160075e231__20250409171049" > 详见
< span class = "+ topic/ph sw-d/filepath ph filepath" > bsp/arcinchip/include/drv/aic_drv_wdt.h< / span > 。< / p > < / li >
< / ul >
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< / div >
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< / section >
< section class = "- topic/section section" id = "watchdog_interface_design_luban_lite__section_nlc_dtg_f1c" data-ofbid = "watchdog_interface_design_luban_lite__section_nlc_dtg_f1c" > < h2 class = "- topic/title title sectiontitle" > HAL 层接口设计< / h2 >
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< div class = "- topic/p p" data-ofbid = "d160075e245__20250409171049" > HAL 层的函数接口声明存放在 hal_wdt.h
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中，主要接口有：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "watchdog_interface_design_luban_lite__codeblock_lrp_dtg_f1c" data-ofbid = "watchdog_interface_design_luban_lite__codeblock_lrp_dtg_f1c" > < strong class = "hl-keyword" > void< / strong > hal_wdt_op_clr(u32 thd);
s32 hal_wdt_is_running(< strong class = "hl-keyword" > void< / strong > );
< strong class = "hl-keyword" > void< / strong > hal_wdt_clr_thd_set(u32 ch, < strong class = "hl-keyword" > struct< / strong > aic_wdt *wdt);
< strong class = "hl-keyword" > void< / strong > hal_wdt_irq_thd_set(u32 ch, < strong class = "hl-keyword" > struct< / strong > aic_wdt *wdt);
< strong class = "hl-keyword" > void< / strong > hal_wdt_rst_thd_set(u32 ch, < strong class = "hl-keyword" > struct< / strong > aic_wdt *wdt);
< strong class = "hl-keyword" > void< / strong > hal_wdt_switch_chan(< strong class = "hl-keyword" > int< / strong > chan);
u32 hal_wdt_remain(< strong class = "hl-keyword" > struct< / strong > aic_wdt *wdt);
< strong class = "hl-keyword" > void< / strong > hal_wdt_enable(u32 enable, u32 dbg_continue);
< strong class = "hl-keyword" > void< / strong > hal_wdt_irq_enable(u32 enable);
< strong class = "hl-keyword" > int< / strong > hal_wdt_irq_sta(< strong class = "hl-keyword" > void< / strong > );
< strong class = "hl-keyword" > void< / strong > hal_wdt_thd_get(u32 ch, < strong class = "hl-keyword" > struct< / strong > aic_wdt *wdt);
< strong class = "hl-keyword" > int< / strong > hal_wdt_clr_int(< strong class = "hl-keyword" > void< / strong > );
< strong class = "hl-keyword" > void< / strong > hal_wdt_status_show(u32 ch);< / pre > < / div >
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< / section >
< section class = "- topic/section section" id = "watchdog_interface_design_luban_lite__hal" data-ofbid = "watchdog_interface_design_luban_lite__hal" > < h2 class = "- topic/title title sectiontitle" > HAL 层接口设计< / h2 >
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< div class = "- topic/p p" data-ofbid = "d160075e256__20250409171049" > HAL 层的函数接口声明存放在 < span class = "+ topic/ph sw-d/filepath ph filepath" > hal_wdt.h< / span >
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中，主要接口有：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "watchdog_interface_design_luban_lite__codeblock_d5d_v2h_ddc" data-ofbid = "watchdog_interface_design_luban_lite__codeblock_d5d_v2h_ddc" > < strong class = "hl-keyword" > void< / strong > hal_wdt_op_clr(u32 thd);
s32 hal_wdt_is_running(< strong class = "hl-keyword" > void< / strong > );
< strong class = "hl-keyword" > void< / strong > hal_wdt_clr_thd_set(u32 ch, < strong class = "hl-keyword" > struct< / strong > aic_wdt *wdt);
< strong class = "hl-keyword" > void< / strong > hal_wdt_irq_thd_set(u32 ch, < strong class = "hl-keyword" > struct< / strong > aic_wdt *wdt);
< strong class = "hl-keyword" > void< / strong > hal_wdt_rst_thd_set(u32 ch, < strong class = "hl-keyword" > struct< / strong > aic_wdt *wdt);
< strong class = "hl-keyword" > void< / strong > hal_wdt_switch_chan(< strong class = "hl-keyword" > int< / strong > chan);
u32 hal_wdt_remain(< strong class = "hl-keyword" > struct< / strong > aic_wdt *wdt);
< strong class = "hl-keyword" > void< / strong > hal_wdt_enable(u32 enable, u32 dbg_continue);
< strong class = "hl-keyword" > void< / strong > hal_wdt_irq_enable(u32 enable);
< strong class = "hl-keyword" > int< / strong > hal_wdt_irq_sta(< strong class = "hl-keyword" > void< / strong > );
< strong class = "hl-keyword" > void< / strong > hal_wdt_thd_get(u32 ch, < strong class = "hl-keyword" > struct< / strong > aic_wdt *wdt);
< strong class = "hl-keyword" > int< / strong > hal_wdt_clr_int(< strong class = "hl-keyword" > void< / strong > );
< strong class = "hl-keyword" > void< / strong > hal_wdt_status_show(u32 ch);< / pre > < / div >
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