Blue Pill USB data for debugging using STM32CubeIDE

Prerequisites

This project assumes you have already installed STM32CubeIDE. You need to have previously done a basic blink sketch with blue-pill using STM32CubeIDE. I have made a complete video from installing STM32CubeIDE to LED blink program. You can watch it by clicking this link. https://www.youtube.com/watch?v=kXg467nVd_A

STM32CubeIDE Settings

Click RCC → High Speed Clock (HSE) to Crystal/Ceramic Resonator

Click connectivity → Click USB

(Tick) Device (FS)

Click Middleware → Click USB_DEVICE

For Class for FS IP → select Communication Device Class (virtual Port Com)

Click Clock Configuration tab → HCLK (MHz) to 72

Additional code on top of STM32CubeIDE generated code

/* USER CODE BEGIN Includes */
#include "usbd_cdc_if.h"
#include "string.h"
/* USER CODE END Includes */

/* USER CODE BEGIN PV */
int myNum = 2024; // Integer (whole number)
float myFloatNum = 5.98; // Floating point number
char myLetter = 'D';
uint8_t myUint = 21; // Same way for uint16_t or uint32_t
uint8_t myArray[20] = {0};
char charData[15]; // Data holder
/* USER CODE END PV */

/* USER CODE BEGIN WHILE */
while (1)
{
  sprintf(charData, "%s\n", "While reached");
  CDC_Transmit_FS((uint8_t *) charData, strlen(charData));
  HAL_Delay(100);
  
  sprintf(charData, "%d\n", myNum);
  CDC_Transmit_FS((uint8_t *) charData, strlen(charData));
  HAL_Delay(100);
  
  sprintf(charData, "%f\n", myFloatNum);
  CDC_Transmit_FS((uint8_t *) charData, strlen(charData));
  HAL_Delay(100);
  
  sprintf(charData, "%c\n", myLetter);
  CDC_Transmit_FS((uint8_t *) charData, strlen(charData));
  HAL_Delay(100);
  
  sprintf(charData, "%d\n", myUint);
  CDC_Transmit_FS((uint8_t *) charData, strlen(charData));
  HAL_Delay(100);
  
  myArray[5]=7;
  sprintf(charData, "%d\n", myArray[5]);
  CDC_Transmit_FS((uint8_t *) charData, strlen(charData));
  HAL_Delay(100);
  
  myNum++;
  /* USER CODE END WHILE */
  
  /* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */