在实际项目中SW协议使用使用的比较多,速度更快,占用的引脚更少,推荐配置成SW协议,即Serial Wire模式; System Wake-Up : 设置低功耗模式下的自动唤醒功能,通过引脚PA0。 Timebase Source : 一般指HAL的时基,即HAL库中的uwTick,用于实现HAL_Delay()以及作为各种timeout时钟的基准。一般情况下直接选择默认的Sys Tic...
LSE 可作为 STM32WB RF Wakeup 和RTC 的时钟源。STM32WB RF Wakeup 2023-04-12 23:10:04 Wakeup events framework同步问题 Wakeup events framework 系统处于 suspend 状态,可通过 wakeup events 唤醒。具体的 wakeup events 可以是按键按下,可以是充电器插入等。但是 2023-09-11 16:17:32 ...
/* Clear Wake-up flag */ PWR->CR |= CR_CWUF_Set;/* Select STANDBY mode */ PWR->CR |= CR_PDDS_Set;/* Set SLEEPDEEP bit of Cortex System Control Register */ (vu32 *) SCB_SysCtrl |= SysCtrl_SLEEPDEEP_Set;/* Request Wait For Interrupt */ __WFI();} / Function...
*/voidPWR_EnterSTANDBYMode(void){/* Clear Wake-up flag */PWR->CR|=PWR_CR_CWUF;/* Select STANDBY mode */PWR->CR|=PWR_CR_PDDS;/* Set SLEEPDEEP bit of Cortex System Control Register */SCB->SCR|=SCB_SCR_SLEEPDEEP;/* This option is used to ensure that store operations are complet...
This control bit is in bit[4] of NVIC System Control Register (0xE000ED10) isSEVONPENDcontrol for NVIC. When a new interrupt pending occurred, this should be able to generate a internal event in the NVIC to wake up the core To use the event mask resister, I think the event needs to...
* Description : Restore system clock after wake-up from STOP: enable HSE, PLL * and select PLL as system clock source. * Input : None * Output : None * Return : None ***/ void dev_clk_restore(void) { /* Enable HSE */ RCC_HSEConfig(RCC_HSE_ON); /* Wait till HSE is ready ...
(); // Enable SysTick after wake-up HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_5); // Toggle with a pin to check the wake-up period } /* USER CODE END 3 */ } /** * @brief System Clock Configuration * @retval None */ void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInit...
10 SystemInit(); 11 uart_reinit(); /* 重新初始化串口 */ 12 rt_kprintf("wake up\r\n"); 13 14} 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 4、进入STOP模式的线程 这里,创建一个线程来实现判断是否按键按下,按下则调用system_enter_stop函数进入STOP模式,同时为了验证唤醒...
12 rt_kprintf("wake up\r\n");1314}4、进入STOP模式的线程这里,创建一个线程来实现判断是否按键按下,按下则调用system_enter_stop函数进入STOP模式,同时为了验证唤醒之后时钟正常以及程序是从进行STOP模式之前的那个地方重新开始执行,我们设计LED灯500ms亮500ms灭,再一个计数变量,每隔1秒自动加1并打印,代码如下...
* HSI RC oscillator is selected as system clock. * @note When the voltage regulator operates in low power mode, an additional * startup delay is incurred when waking up from Stop mode. * By keeping the internal regulator ON during Stop mode, the consumption ...