Problems with STM32F103C8T6 shutdown mode

chenbingjy

Problems with STM32F103C8T6 shutdown mode [Copy link]

I've been working on low power consumption recently, and started using sleep mode, but it's not very good. Now I'm working on shutdown mode. I've never done this before, so I'm posting to ask about it, so I can feel at ease. This is what I did in my program: Initialization: Stm32_Clock_Init(2);CPU_Init(); //CPU initialization VAR_Init(); //Variable initialization usart1_init(9600); NVIC_Init10(); /* Enable PWR and BKP clock */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE); /* Allow access to BKP Domain */ PWR_BackupAccessCmd(ENABLE); Enter stop mode: PWR_EnterSTOPMode(PWR_Regulator_LowPower,PWR_STOPEntry_WFI); When waking up, I did this: void EXTI3_IRQHandler(void) { long int i; if(EXTI_GetITStatus(EXTI_Line3)!=RESET) //Rise { Stm32_Clock_Init(2); //16MHz GPIO_ResetBits(GPIOA,GPIO_Pin_12); //The light is on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stm32_Clock_Init(2); This is to reconfigure the clock. May I ask an expert, is my configuration correct? Thank you!

懒猫爱飞

1) I have never tried the deep sleep mode of 103. 2) Based on the development experience of other MCUs, you may have just woken up the MCU, but did not initialize the related peripherals. 3) Other MCUs usually wake up the MCU in the place where it is sleeping, so the code after wakeup is done immediately below the sleep program segment, such as initializing related IO and related peripherals. 4) I can only help you here. When I have time, I will also study STM32F103 carefully.

英尚微电子

You can consider replacing it with Lingdongwei's MM32F103C8T6, and provide original technical support~~