STM32_Firmware library operates LED lights-EEWORLD

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The running light is the first experiment that almost every development board comes into contact with. It is simple but indispensable.

Today, I will briefly explain how to use the firmware library to operate LED lights.

Hardware Connection:

STM32_Firmware library operates LED lights

software design:

void LED_Init(void)

{

GPIO_InitTypeDef GPIO_InitStructure;

// 1, enable the GPIO corresponding pin clock

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOG ,ENABLE);

// 2, define GPIO pins

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; // Push-pull output

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; // Maximum speed 50Mhz

GPIO_Init(GPIOD,&GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;

GPIO_Init(GPIOG,&GPIO_InitStructure);

GPIO_ResetBits(GPIOD,GPIO_Pin_13); // Set GPIO_D13 to low level

GPIO_SetBits(GPIOG,GPIO_Pin_14); // Set GPIO_D13 to high level

}

The above design can define the GPIO pins corresponding to the LED lights.

Set the pin to high or low level, call

GPIO_ResetBits(GPIOx,GPIO_Pin_x),

GPIO_SetBits(GPIOx,GPIO_Pin_x);

Function

Keywords：STM32 Reference address：STM32_Firmware library operates LED lights

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