ON Board LED Blinking on STM 32 Board

STM32 microcontrollers are powerful devices that can be used to control a wide variety of electronic devices. In this post, we will discuss how to configure and control output on the PC13 pin of an STM32 microcontroller using the HAL library.

The PC13 pin is a general-purpose input/output (GPIO) pin on the STM32 microcontroller. It can be used to control a wide variety of electronic devices such as LEDs, relays, and motors. In order to control output on the PC13 pin, we need to configure the GPIO port for the PC13 pin and then set the output value of the pin.

To configure the GPIO port for the PC13 pin, we need to enable the clock for the GPIO port, set the pin mode, and set the pin speed. We can do this using the GPIO_InitTypeDef struct and the HAL_GPIO_Init() function. Here is an example code for configuring the PC13 pin for output:

// enable the clock for the GPIO port of the PC13 pin

__HAL_RCC_GPIOC_CLK_ENABLE();

// configure the GPIO pin for PC13

GPIO_InitTypeDef GPIO_InitStruct = {0};

GPIO_InitStruct.Pin = GPIO_PIN_13;

GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;

GPIO_InitStruct.Pull = GPIO_NOPULL;

GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;

HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

In this code, we first enable the clock for the GPIO port of the PC13 pin using the __HAL_RCC_GPIOC_CLK_ENABLE() function. This function enables the clock for the GPIO port of the PC13 pin. We then create a GPIO_InitTypeDef struct and set the pin mode to GPIO_MODE_OUTPUT_PP, which means that the pin is configured for output with push-pull configuration. We set the pull-up/pull-down resistor to GPIO_NOPULL, which means that the pull-up/pull-down resistor is not enabled. Finally, we set the pin speed to GPIO_SPEED_FREQ_LOW, which sets the GPIO speed to low frequency.

Once we have configured the GPIO port for the PC13 pin, we can set the output value of the pin using the HAL_GPIO_WritePin() function. Here is an example code for turning the PC13 pin on and off:

Copy code

// turn on the PC13 pin

HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13, GPIO_PIN_SET);

// wait for 500ms

HAL_Delay(500);

// turn off the PC13 pin

HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13, GPIO_PIN_RESET);

// wait for 500ms

HAL_Delay(500);

In this code, we first turn on the PC13 pin by calling the HAL_GPIO_WritePin() function with the GPIO_PIN_SET parameter. This sets the output value of the PC13 pin to high. We then wait for 500ms using the HAL_Delay() function. After that, we turn off the PC13 pin by calling the HAL_GPIO_WritePin() function with the GPIO_PIN_RESET parameter. This sets the output value of the PC13 pin to low. We then wait for another 500ms using the HAL_Delay() function.

In conclusion, configuring and controlling output on the PC13 pin of an STM32 microcontroller using the HAL library is relatively easy. We just need to configure the GPIO port for the PC13 pin using the GPIO_InitTypeDef struct and the HAL_GPIO_Init() function and set the output value of the pin using the HAL_GPIO_WritePin() function. By doing this, we can

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