92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2020-08-18 ylz0923 first version
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* 2021-08-12 chenyingchun optimize wdt_control arg usage
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*/
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#include <board.h>
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#include <rtdevice.h>
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#include <nrfx_wdt.h>
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#ifdef RT_USING_WDT
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struct nrf5x_wdt_obj
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{
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rt_watchdog_t watchdog;
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nrfx_wdt_t wdt;
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nrfx_wdt_channel_id ch;
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rt_uint16_t is_start;
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};
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static struct nrf5x_wdt_obj nrf5x_wdt = {
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.wdt = NRFX_WDT_INSTANCE(0),
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};
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static nrfx_wdt_config_t nrf5x_wdt_cfg = NRFX_WDT_DEFAULT_CONFIG;
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static struct rt_watchdog_ops ops;
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static rt_err_t wdt_init(rt_watchdog_t *wdt)
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{
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return RT_EOK;
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}
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static rt_err_t wdt_control(rt_watchdog_t *wdt, int cmd, void *arg)
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{
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switch (cmd)
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{
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/* feed the watchdog */
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case RT_DEVICE_CTRL_WDT_KEEPALIVE:
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nrfx_wdt_feed(&nrf5x_wdt.wdt);
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break;
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/* set watchdog timeout */
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case RT_DEVICE_CTRL_WDT_SET_TIMEOUT:
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nrf5x_wdt_cfg.reload_value = (*((rt_uint32_t*)arg)) * 1000;
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break;
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case RT_DEVICE_CTRL_WDT_GET_TIMEOUT:
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*((rt_uint32_t*)arg) = nrf5x_wdt_cfg.reload_value;
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break;
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case RT_DEVICE_CTRL_WDT_START:
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if (nrf5x_wdt.is_start != 1)
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{
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nrfx_wdt_init(&nrf5x_wdt.wdt, &nrf5x_wdt_cfg, RT_NULL);
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nrfx_wdt_channel_alloc(&nrf5x_wdt.wdt, &nrf5x_wdt.ch);
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nrfx_wdt_enable(&nrf5x_wdt.wdt);
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nrf5x_wdt.is_start = 1;
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}
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break;
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default:
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return -RT_ERROR;
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}
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return RT_EOK;
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}
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int rt_wdt_init(void)
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{
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nrf5x_wdt.is_start = 0;
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ops.init = &wdt_init;
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ops.control = &wdt_control;
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nrf5x_wdt.watchdog.ops = &ops;
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/* register watchdog device */
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if (rt_hw_watchdog_register(&nrf5x_wdt.watchdog, "wdt", RT_DEVICE_FLAG_DEACTIVATE, RT_NULL) != RT_EOK)
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{
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return -RT_ERROR;
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}
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return RT_EOK;
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}
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INIT_BOARD_EXPORT(rt_wdt_init);
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static int wdt_sample(int argc, char *argv[])
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{
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rt_uint32_t timeout = 2; /* 溢出时间，单位：秒*/
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rt_device_t wdt = rt_device_find("wdt");
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rt_device_init(wdt);
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rt_device_control(wdt, RT_DEVICE_CTRL_WDT_SET_TIMEOUT, &timeout);
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rt_device_control(wdt, RT_DEVICE_CTRL_WDT_START, RT_NULL);
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}
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MSH_CMD_EXPORT(wdt_sample, wdt sample);
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#endif /* RT_USING_WDT */
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