list_device看不到看门狗

发布于 2019-09-12 13:55:11 浏览：1655 订阅该版

* 本帖最后由 aozima 于 2019-9-20 12:10 编辑 *

```/*
 * Copyright (c) 2006-2018, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2019-03-08     obito0   first version
 */

#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>

void serial_usart1_inital(void);
/* defined the LED0 pin: PC13 */
#define LED0_PIN    GET_PIN(A, 8)

#define IWDG_DEVICE_NAME  "wdt"

static rt_device_t wdg_dev;/*看门狗设备句柄*/

//static rt_device_t serial; /* 串 口 设 备 句 柄 */

//char str[] = "hello RT-Thread! ";

static void idle_hook(void)
{
    rt_device_control(wdg_dev,RT_DEVICE_CTRL_WDT_KEEPALIVE,NULL);

rt_kprintf("feed the dog ");
}
int main(void)
{
 int count = 1; 
 /* set LED0 pin mode to output */
 rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);

while (count++)
    {
        rt_pin_write(LED0_PIN, PIN_HIGH);
        rt_thread_mdelay(500);
        rt_pin_write(LED0_PIN, PIN_LOW);
        rt_thread_mdelay(500);
    }

}

static int iwdg_sample(int argc,char *argv[])
 {
     rt_err_t result = RT_EOK;
     rt_uint32_t timeout = 30;    /* 超时时间为1000ms*/
     char device_name[RT_NAME_MAX];

/* 判断命令行参数是否给定了设备名称 */
 if (argc == 2)
 {
 rt_strncpy(device_name, argv[1], RT_NAME_MAX);
 }
 else
 {
 rt_strncpy(device_name, IWDG_DEVICE_NAME, RT_NAME_MAX);
 }
 /* 根据设备名称查找看门狗设备，获取设备句柄 */
 result = rt_hw_watchdog_register((rt_watchdog_t *)wdg_dev,device_name, RT_DEVICE_FLAG_RDWR,NULL);
 wdg_dev = rt_device_find(device_name);
 if (!wdg_dev)
 {
 rt_kprintf("find %s failed! ",device_name);
 return RT_ERROR;
 }
 /* 初始化设备 */
 result = rt_device_init(wdg_dev);
 if (result != RT_EOK)
 {
 rt_kprintf("initialize %s failed! ",device_name);
 return RT_ERROR;
 }
 /* 设置看门狗溢出时间 */
 result = rt_device_control(wdg_dev, RT_DEVICE_CTRL_WDT_SET_TIMEOUT, (void*)timeout);
 if (result != RT_EOK)
 {
 rt_kprintf("set %s timeout failed! ",device_name);
 return RT_ERROR;
 }
 /* 设置空闲线程回调函数 */
 rt_thread_idle_sethook(idle_hook);

return result;
 }
 /* 导出到 msh 命令列表中 */
 MSH_CMD_EXPORT(iwdg_sample, iwdg sample);

#if 0
void serial_usart1_inital(void)
{
#define SAMPLE_UART_NAME "uart1" /* 串 口 设 备 名 称 */
    struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT; /* 配 置 参 数 */
    serial = rt_device_find(SAMPLE_UART_NAME);/* 查 找 串 口 设 备 */
    rt_device_open(serial, RT_DEVICE_FLAG_INT_RX);/* 以 中 断 接 收 及 轮 询 发 送 模 式 打 开 串 口 设 备 */
    config.baud_rate = BAUD_RATE_9600;
    config.data_bits = DATA_BITS_8;
    config.stop_bits = STOP_BITS_2;
    config.parity = PARITY_NONE;
    rt_device_control(serial, RT_DEVICE_CTRL_CONFIG, &config);
}
 #endif

#if 0
static int rt_hw_spi_flash_init(void)
{
    __HAL_RCC_GPIOB_CLK_ENABLE();
    rt_hw_spi_device_attach("spi1","spi10", GPIOB, GPIO_PIN_14);
    return RT_EOK;
}
/* 导 出 到 自 动 初 始 化 */
INIT_COMPONENT_EXPORT(rt_hw_spi_flash_init);
#endif ```

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