WDG

更新时间：2019-01-25 14:45:05

接口列表

接口详情

int32_t hal_wdg_init(wdg_dev_t *wdg)

void hal_wdg_reload(wdg_dev_t *wdg)

int32_t hal_wdg_finalize(wdg_dev_t *wdg)

相关结数据结构

wdg_dev_t

typedef struct {
    uint8_t      port;   /* wdg port */
    wdg_config_t config; /* wdg config */
    void        *priv;   /* priv data */
} wdg_dev_t;

wdg_config_t

typedef struct {
    uint32_t timeout; /* Watchdag timeout ms */
} wdg_config_t;

使用示例

#include <aos/hal/wdg.h>

#define WDG1_PORT_NUM 1

/* define dev */
wdg_dev_t wdg1;

int application_start(int argc, char *argv[])
{
    int ret = -1;
    wdg_config_t wdg_cfg;
    static int count = 0;

    /* wdg port set */
    wdg1.port = WDG1_PORT_NUM;

    /* set reload time to 1000ms */
    wdg1.config.timeout = 1000; /* 1000ms */

    /* init wdg1 with the given settings */
    ret = hal_wdg_init(&wdg1);
    if (ret != 0) {
        printf("wdg1 init error !\n");
    }

    while(1) {
        /* clear wdg about every 500ms */
        hal_wdg_reload(&wdg1);

        /* finalize wdg1 */
        if (count == 20) {
            hal_wdg_finalize(&wdg1);
        }

        /* sleep 500ms */
        aos_msleep(500);
        count++;
    };
}

注：port为逻辑端口号，其与物理端口号的对应关系见具体的对接实现

移植说明

   新建hal\_wdg\_xxmcu.c和hal\_wdg\_xxmcu.h的文件，并将这两个文件放到platform/mcu/xxmcu/hal目录下。在hal\_wdg\_xxmcu.c中实现所需要的hal函数，hal\_wdg\_xxmcu.h中放置相关宏定义。
   参考platform/mcu/stm32l4xx/src/STM32L496G-Discovery/hal/hal\_wdg\_stm32l4.c