Published December 24, 2022 © GPL3+

APM32F003 Low power

The APM32F003F6P6 MINIBOARD uses KEY1 (PD1) of the MINIBOARD as the sleep wake up key to control the low power mode and wake up of APM32F003

BeginnerFull instructions provided1 hour270

Story

1. Application background:

Because the package of APM32F003 is very small, only 20-PIN, and the current is about 3uA in the low power consumption state, it has a large number of applications in products with batteries.

Entering the low-power mode by pressing the button is a relatively routine function, so this demo can help customers quickly realize the APM32F003 entering the low-power mode and wake-up function on customer products.

2. Functions realized by Demo:

Use APM32F003F6P6 MINIBOARD, use KEY1 (PD1) of MINIBOARD as sleep wake-up button, control APM32F003 to enter low power consumption mode and wake up.

Specific functions:

（1）MCU runs in normal mode after power-on.

（2）Press KEY_1 to enter low power consumption mode (RAM, Register data will not be lost).

（3）Press KEY_1 again to wake up the MCU and return to normal mode.

The code part uses the KEY1 button (PD6) of the MINI Board to enter/exit the Halt mode, and uses the WFI command.

Configure other IO pins as input state.

Github: https://github.com/GeehySemi/APM32F003_Low-power

Functions

int main(void) 
{
    GPIO_Config_T gpioConfig;

    gpioConfig.mode = GPIO_MODE_IN_PU;
    gpioConfig.pin = GPIO_PIN_ALL;            
    GPIO_Config(GPIOA, &gpioConfig);                            
    GPIO_Config(GPIOB, &gpioConfig);                    
    GPIO_Config(GPIOC, &gpioConfig);  
    gpioConfig.pin = ((uint8_t)0XF9);    
    GPIO_Config(GPIOD, &gpioConfig);    

    //KEY1 PD6
    gpioConfig.mode = GPIO_MODE_IN_PU;
    gpioConfig.pin = GPIO_PIN_6;
    gpioConfig.intEn = GPIO_EINT_ENABLE;
    EINT_Config(EINT_PORT_D, EINT_TRIGGER_FALLING);
    NVIC_EnableIRQRequest(EINTD_IRQn, 0X01);
    GPIO_Config(GPIOD, &gpioConfig);        

    while(1)    
    {
        if(Sleepflag)
        {        
          PMU_EnterHaltModeWFI();    
        }                    
        
    }
}

Credits

Larry lai

14 projects • 10 followers

APM32F003 Low power

Story

Code

Functions

Credits

Larry lai

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APM32F003 Low power

APM32F003 Low power

Story

Code

Functions

Credits

Larry lai

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