1.在sdk_config.h中加入宏
// WDT_ENABLED - nrf_drv_wdt - WDT peripheral driver - legacy layer //========================================================== #ifndef WDT_ENABLED #define WDT_ENABLED 1 #endif // WDT_CONFIG_BEHAVIOUR - WDT behavior in CPU SLEEP or HALT mode // Run in SLEEP, Pause in HALT // Pause in SLEEP, Run in HALT // Run in SLEEP and HALT // Pause in SLEEP and HALT
#ifndef WDT_CONFIG_BEHAVIOUR #define WDT_CONFIG_BEHAVIOUR 1 #endif
// WDT_CONFIG_RELOAD_VALUE - Reload value
#ifndef WDT_CONFIG_RELOAD_VALUE #define WDT_CONFIG_RELOAD_VALUE 2000 #endif
// WDT_CONFIG_IRQ_PRIORITY - Interrupt priority
// Priorities 0,2 (nRF51) and 0,1,4,5 (nRF52) are reserved for SoftDevice // 0 (highest) // 1 // 2 // 3 // 4 // 5 // 6 // 7
#ifndef WDT_CONFIG_IRQ_PRIORITY #define WDT_CONFIG_IRQ_PRIORITY 6 #endif 2.导入文件nrfx_wdt.c到工程中
3.引入头文件
#include "nrf_drv_wdt.h"
4.定义变量 nrf_drv_wdt_channel_id m_channel_id;
5.WDT事件函数
void wdt_event_handler(void) { printf("wdt event\n");
//NOTE: The max amount of time we can spend in WDT interrupt is two cycles of 32768[Hz] clock - after that, reset occurs }
6.在主函数中的处理
int main(void) { uint32_t err_code;
bsp_board_init(BSP_INIT_LEDS);
const app_uart_comm_params_t comm_params = { RX_PIN_NUMBER, TX_PIN_NUMBER, RTS_PIN_NUMBER, CTS_PIN_NUMBER, UART_HWFC, false, #if defined (UART_PRESENT) NRF_UART_BAUDRATE_115200 #else NRF_UARTE_BAUDRATE_115200 #endif };
APP_UART_FIFO_INIT(&comm_params, UART_RX_BUF_SIZE, UART_TX_BUF_SIZE, uart_error_handle, APP_IRQ_PRIORITY_LOWEST, err_code);
APP_ERROR_CHECK(err_code); printf("\nreset\n"); //Configure WDT. nrf_drv_wdt_config_t config = NRF_DRV_WDT_DEAFULT_CONFIG; err_code = nrf_drv_wdt_init(&config, wdt_event_handler); APP_ERROR_CHECK(err_code); err_code = nrf_drv_wdt_channel_alloc(&m_channel_id); APP_ERROR_CHECK(err_code); nrf_drv_wdt_enable(); // 使能WDT while (true) { // nrf_drv_wdt_channel_feed(m_channel_id); //喂狗操作 }
}
