Bearpi IOT lighting LED

STM32CubeMX Lighten up LED The lamp

1、 Schematic diagram

Chip type ： STM32L431RC
LED Pin ： PC13
Output mode ： Push pull output , Output high level is on LED The lamp

2、STM32CubeMX To configure LED

Be careful ： The project save path cannot contain Chinese characters , otherwise KEIL5 The boot file will not be found , The following error occurred

1、 Create a new project

2、 Select chip , Double click in

3、 Configure pins

After selecting the pin , Set user alias , Easy to program

4、 Configure clock tree

5、 Build project
Here, I accidentally saved the file in the Chinese path , Has been changed ！ Do not commit ！！！

2、 Write code

Be careful ： The user code needs to be written in
/* USER CODE BEGIN */

/* USER CODE END * / Between , Otherwise, if you reuse CubeMX Generate the file code , User codes outside these areas will be deleted

1、 The correlation function is in stm32l4xx_hal_gpio.h Statement in , You can use the following function to achieve LED Pin output of
void HAL_GPIO_WritePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState);
void HAL_GPIO_TogglePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin);
For example, the following writing , Can achieve 1sLED State flip ：
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13, GPIO_PIN_RESET);// destroy
HAL_Delay(1000);
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13, GPIO_PIN_SET);// bright
HAL_Delay(1000);
perhaps
HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_13);// Flip
HAL_Delay(1000);

3、 Burn files

1、 install STLINK drive
2、 Set the burning mode

3、 Compile and download