IAR+STM8——GPIO-EEWORLD

Collect

On the second day, we started learning from the most basic IO operations. Most of the IO on STM are GPIO.

When you are just starting to learn, don't make the test program complicated. The simpler it is, the less likely it is to make mistakes. The following is the code, without using the STM8 official firmware library.

//GPIO test

＃include

#define LED1_FLASH PD_ODR_ODR3 = !PD_ODR_ODR3 // LED1 on the development board is connected to PD3

void delay(unsigned int count)
{
while(count--);
}

void GPIO_init(void)
{
PD_DDR = 0x08; // Configure the direction register PD3 output of the PD port
PD_CR1 = 0x08; // Set PD3 to push-pull output
}

void init_devices(void)
{
GPIO_init();
}

void main( void )
{
init_devices();
while(1)
{
delay(50000);
LED1_FLASH;
}
}

Keywords：IAR STM8 GPIO Reference address：IAR+STM8——GPIO

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