Question
Problem with the UpdateEvent
Hi everyone, I'm new to STM32. I'm trying to use the STM32C011x4's internal temperature sensor.
I'm doing the same as the website below:
https://deepbluembedded.com/stm32-internal-temperature-sensor-reading-example/#:~:text=The%20STM32%20microcontrollers%20have%20an,ambient%20temperature%20sensor%20failure%20events.
But my code doesn't go into the "if(UpdateEvent){" line.
I inserted an LED to debug, but it doesn't turn on.
Can someone help me??? follow the code below
I thank the attention
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#define VREFINT 1.21 // Internal reference voltage, V
#define ADCMAX 4095.0 // (2^12)-1 ADC maximum value
#define V_AT_30C 0.76 // Sensor's voltage at 30 °C
#define AVG_SLOPE 0.00253 // V (2.53mV/°C)
/* Private variables ---------------------------------------------------------*/
ADC_HandleTypeDef hadc1;
DMA_HandleTypeDef hdma_adc1;
TIM_HandleTypeDef htim3;
/* USER CODE BEGIN PV */
uint8_t UpdateEvent = 0;
uint16_t AdcRaw[2];
double Temperature;
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_DMA_Init(void);
static void MX_GPIO_Init(void);
static void MX_ADC1_Init(void);
static void MX_TIM3_Init(void);
/* USER CODE BEGIN 0 */
void UpdateLEDs(double temperature);
/* USER CODE END 0 */
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_DMA_Init();
MX_GPIO_Init();
MX_ADC1_Init();
MX_TIM3_Init();
// Start ADC with DMA and then timer:
HAL_TIM_Base_Start(&htim3); // Start Timer3 (Trigger Source For ADC1)
HAL_ADCEx_Calibration_Start(&hadc1); // used to calibrate the ADC
HAL_ADC_Start_DMA(&hadc1, (uint32_t*)AdcRaw, 2); // Start ADC Conversion
while (1)
{
if(UpdateEvent){
HAL_GPIO_WritePin(LED5_GPIO_Port, LED5_Pin, GPIO_PIN_SET);
double V_Ref = ((VREFINT*ADCMAX)/AdcRaw[0]);
double V_Sense = (V_Ref*AdcRaw[1])/ADCMAX;
Temperature = (V_Sense - V_AT_30C)/(AVG_SLOPE) + 25.0;
HAL_GPIO_WritePin(LED5_GPIO_Port, LED5_Pin, GPIO_PIN_RESET);
UpdateEvent = 0;
}
}
}
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
{
if (hadc->Instance == ADC1){
UpdateEvent = 1;
HAL_GPIO_TogglePin(LED6_GPIO_Port, LED6_Pin); // Toggle Interrupt Rate Indicator Pin
HAL_Delay(100);
}
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
{
Error_Handler();
}
}
static void MX_ADC1_Init(void)
{
ADC_ChannelConfTypeDef sConfig = {0};
hadc1.Instance = ADC1;
hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2;
hadc1.Init.Resolution = ADC_RESOLUTION_12B;
hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc1.Init.ScanConvMode = ADC_SCAN_ENABLE;
hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
hadc1.Init.LowPowerAutoWait = DISABLE;
hadc1.Init.LowPowerAutoPowerOff = DISABLE;
hadc1.Init.ContinuousConvMode = ENABLE;
hadc1.Init.NbrOfConversion = 2;
hadc1.Init.ExternalTrigConv = ADC_EXTERNALTRIG_T3_TRGO;
hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING;
hadc1.Init.DMAContinuousRequests = ENABLE;
hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED;
hadc1.Init.SamplingTimeCommon1 = ADC_SAMPLETIME_160CYCLES_5;
hadc1.Init.SamplingTimeCommon2 = ADC_SAMPLETIME_160CYCLES_5;
hadc1.Init.OversamplingMode = DISABLE;
hadc1.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_HIGH;
if (HAL_ADC_Init(&hadc1) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_VREFINT;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SamplingTime = ADC_SAMPLINGTIME_COMMON_1;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;
sConfig.Rank = ADC_REGULAR_RANK_2;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
}
static void MX_TIM3_Init(void)
{
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};
/* USER CODE BEGIN TIM3_Init 1 */
/* USER CODE END TIM3_Init 1 */
htim3.Instance = TIM3;
htim3.Init.Prescaler = 95;
htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
htim3.Init.Period = 49999;
htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
if (HAL_TIM_Base_Init(&htim3) != HAL_OK)
{
Error_Handler();
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if (HAL_TIM_ConfigClockSource(&htim3, &sClockSourceConfig) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
}
static void MX_DMA_Init(void)
{
/* DMA controller clock enable */
__HAL_RCC_DMA1_CLK_ENABLE();
/* DMA interrupt init */
/* DMA1_Channel1_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);
}
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* USER CODE BEGIN MX_GPIO_Init_1 */
/* USER CODE END MX_GPIO_Init_1 */
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOA, LED2_Pin|LED3_Pin|LED4_Pin|LED5_Pin
|LED6_Pin, GPIO_PIN_RESET);
/*Configure GPIO pins : LED2_Pin LED3_Pin LED4_Pin LED5_Pin
LED6_Pin */
GPIO_InitStruct.Pin = LED2_Pin|LED3_Pin|LED4_Pin|LED5_Pin
|LED6_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
__disable_irq();
while (1)
{
}
}
#ifdef USE_FULL_ASSERT
void assert_failed(uint8_t *file, uint32_t line)
{
}
#endif