Serial Transmission in Stm32

As the title says, today I am going to show you how to use UART for serial communication in STM32 devices. I am going to use STM32CubeMx to generate necessary code and than edit the code in Keil uvision 5.

UART is widely used for serial communication between two devices. It is easy to use protocol, because the clock sync is not involved. All you have to do is take care of BAUD RATE. BAUD RATE must be same for both devices, amongst which communication is done. I am going to use 9600 as it is standard.

CubeMX Setup

1.) Select the UART you want to use for communication. I am using UART2.

2.) In the ‘configuration’ tab, make sure USART settings are as follows.

Some Insight into the Code

uint8_t data[] = "HELLO WORLD!\n";

int main(void)
{

  HAL_Init();

  SystemClock_Config();

  MX_GPIO_Init();
  MX_USART2_UART_Init();

  while (1)
  {
	HAL_UART_Transmit (&huart2, data, 14, 50);
	HAL_Delay (1000);    // wait for 1 sec
  }
}