/* * Copyright (c) 2006-2022, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2021-11-15 JasonHu first version */ #include #include #include #include #define DBG_SECTION_NAME "wdt" #include #if defined(RT_USING_WDT) && defined(BSP_USING_WDT) /* hardware only support (1-16)s */ static rt_uint32_t wdg_timeout = 0; static rt_err_t wdg_init(rt_watchdog_t *wdt) { wdg_timeout = 0; hal_watchdog_init(); return RT_EOK; } static rt_err_t wdg_control(rt_watchdog_t *wdt, int cmd, void *arg) { switch (cmd) { case RT_DEVICE_CTRL_WDT_SET_TIMEOUT: if (arg) { wdg_timeout = *(rt_uint32_t *)arg; } else { LOG_E("arg is NULL!"); return RT_EIO; } break; case RT_DEVICE_CTRL_WDT_GET_TIMEOUT: if (arg) { *((rt_uint32_t *)arg) = wdg_timeout; } else { LOG_E("arg is NULL!"); return RT_EIO; } break; case RT_DEVICE_CTRL_WDT_GET_TIMELEFT: LOG_E("not support RT_DEVICE_CTRL_WDT_GET_TIMELEFT on this platform!"); if (arg) { *((rt_uint32_t *)arg) = 0; } else { LOG_E("arg is NULL!"); } return RT_EIO; case RT_DEVICE_CTRL_WDT_KEEPALIVE: hal_watchdog_feed(); break; case RT_DEVICE_CTRL_WDT_START: hal_watchdog_start(wdg_timeout); break; case RT_DEVICE_CTRL_WDT_STOP: hal_watchdog_stop(wdg_timeout); break; default: return RT_EIO; } return RT_EOK; } static const struct rt_watchdog_ops wdg_pos = { wdg_init, wdg_control, }; static rt_watchdog_t wdg; int rt_hw_wdg_init(void) { wdg.ops = &wdg_pos; rt_hw_watchdog_register(&wdg, "wdt", 0, RT_NULL); return RT_EOK; } INIT_DEVICE_EXPORT(rt_hw_wdg_init); void rt_hw_cpu_reset(void) { rt_hw_interrupt_disable(); hal_watchdog_start(1); while(1); } MSH_CMD_EXPORT_ALIAS(rt_hw_cpu_reset, reboot, reset machine); #endif /* RT_USING_WDT && BSP_USING_WDT */