Variables are showing nothing in Live expression window

[mahmanish]

Hi Guys,

This is my simple ADC program and i was expecting to see some data output on Live expression window. Instead it is showing "Failed to evaluate"

//initialization:

/* USER CODE BEGIN 1 */

uint16_t raw;

char msg[10];

/* USER CODE END 1 */

//while loop

{

//set GPIO Pin high PA8

HAL_GPIO_WritePin(GPIOA, GPIO_PIN_8, GPIO_PIN_SET);

// GEt ADC Value

HAL_ADC_Start(&hadc1);

HAL_ADC_PollForConversion(&hadc1, HAL_MAX_DELAY);

raw= HAL_ADC_GetValue(&hadc1);

//convert the string and print

sprintf(msg, "%h\r\n", raw);

HAL_UART_Transmit(&huart3, (uint8_t*)msg, strlen(msg), HAL_MAX_DELAY);

HAL_Delay(1);

/* USER CODE END WHILE */

/* USER CODE BEGIN 3 */

}

The same issue is not happening when i am using Black pill board and all live expressions are visible.

[Andrew Neil]

Please see the posting tips for how to properly post source code:

https://community.st.com/t5/community-guidelines/how-to-write-your-question-to-maximize-your-chances-to-find-a/ta-p/575228

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@mahmanish wrote:

The same issue is not happening when i am using Black pill board

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So what board are you using when the issue does happen ?

Does the correct output appear from your UART ?