Posted on July 06, 2018 at 14:09I have a problem with stm32f103, if insert in HAL_Delay(1000) in Serial Monitor i see incorrect results, but if i insert HAL_Delay(150) the results are correct. I do not understand why!
This is the code:
while (1)
{
HAL_ADC_Start(&hadc1);
if(HAL_ADC_PollForConversion(&hadc1,10) == HAL_OK){
sensorVal = HAL_ADC_GetValue(&hadc1);
HAL_ADC_Stop(&hadc1);
}
VSENSE = sensorVal*ADC_TO_VOLT;
temperature = (V25 - VSENSE) / AVG_SLOPE + 25;
char buffer[7];
sprintf(buffer, '%5.2f\n', temperature);
HAL_GPIO_WritePin(LED13_GPIO_Port, LED13_Pin, GPIO_PIN_SET);
HAL_UART_Transmit(&huart1, (uint8_t*)buffer, sizeof(buffer) ,HAL_MAX_DELAY);
HAL_GPIO_WritePin(LED13_GPIO_Port, LED13_Pin, GPIO_PIN_RESET);
HAL_Delay(150);
}
