ADC3 in Nuceo f767

[mohsen]

Posted on November 02, 2016 at 21:44

I wrote the following program, it works with ADC1 and ADC2. But it read zero in ADC3.

Also, when I use all ADC at same program it remain on ADC3 reading line! In my project I need to use all ADC at same program. I use Atollic TrueStudio ====================== &sharpinclude ''stm32f7xx_hal.h'' static GPIO_InitTypeDef GPIO_InitStruct; uint32_t g_ADCValue; int g_MeasurementNumber; uint16_t size=1; uint16_t temp; uint8_t rdt; ADC_HandleTypeDef hadc3; UART_HandleTypeDef huart3; void SystemClock_Config(void); void Error_Handler(void); static void MX_ADC3_Init(void); int main(void) { HAL_Init(); SystemClock_Config(); __HAL_RCC_GPIOA_CLK_ENABLE(); __HAL_RCC_GPIOB_CLK_ENABLE(); __HAL_RCC_GPIOC_CLK_ENABLE(); __HAL_RCC_GPIOD_CLK_ENABLE(); MX_ADC3_Init(); // Init UART 3 huart3.Instance = USART3; huart3.Init.BaudRate = 115200; huart3.Init.WordLength = UART_WORDLENGTH_8B; huart3.Init.StopBits = UART_STOPBITS_1; huart3.Init.Parity = UART_PARITY_NONE; huart3.Init.Mode = UART_MODE_TX_RX; huart3.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart3.Init.OverSampling = UART_OVERSAMPLING_16; huart3.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE; huart3.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT; if (HAL_UART_Init(&huart3) != HAL_OK) { Error_Handler(); } // Configure IO in output push-pull mode to drive external LEDs GPIO_InitStruct.Pin = GPIO_PIN_0; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_PULLUP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, 1); GPIO_InitStruct.Pin = GPIO_PIN_7; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_PULLUP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, 1); HAL_ADC_Start(&hadc3); while (1) { HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_0); HAL_Delay(100); // delay 1000 ms if (HAL_ADC_PollForConversion(&hadc3, 1000000) == HAL_OK) { g_ADCValue = HAL_ADC_GetValue(&hadc3); g_MeasurementNumber++; rdt= (uint8_t) g_ADCValue; HAL_UART_Transmit(&huart3, &rdt, size, 0xFFFF); HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, 1); } else { //HAL_UART_Transmit(&huart3, &rdt, size, 0xFFFF); HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, 0); } } } /** System Clock Configuration */ void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct; RCC_ClkInitTypeDef RCC_ClkInitStruct; RCC_PeriphCLKInitTypeDef PeriphClkInitStruct; __HAL_RCC_PWR_CLK_ENABLE(); __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3); RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.HSICalibrationValue = 16; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI; RCC_OscInitStruct.PLL.PLLM = 16; RCC_OscInitStruct.PLL.PLLN = 192; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; RCC_OscInitStruct.PLL.PLLQ = 2; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { Error_Handler(); } if (HAL_PWREx_EnableOverDrive() != HAL_OK) { Error_Handler(); } RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK) { Error_Handler(); } PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USART3; PeriphClkInitStruct.Usart3ClockSelection = RCC_USART3CLKSOURCE_PCLK1; if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) { Error_Handler(); } HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000); HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK); /* SysTick_IRQn interrupt configuration */ HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0); } /* ADC3 init function */ static void MX_ADC3_Init(void) { ADC_ChannelConfTypeDef sConfig; /**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion) */ hadc3.Instance = ADC3; hadc3.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4; hadc3.Init.Resolution = ADC_RESOLUTION_8B; hadc3.Init.ScanConvMode = DISABLE; hadc3.Init.ContinuousConvMode = ENABLE; hadc3.Init.DiscontinuousConvMode = DISABLE; hadc3.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; hadc3.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc3.Init.NbrOfConversion = 1; hadc3.Init.DMAContinuousRequests = DISABLE; hadc3.Init.EOCSelection = DISABLE; //ADC_EOC_SINGLE_CONV; if (HAL_ADC_Init(&hadc3) != HAL_OK) { Error_Handler(); } /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time. */ sConfig.Channel = ADC_CHANNEL_9; sConfig.Rank = 1; sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES; if (HAL_ADC_ConfigChannel(&hadc3, &sConfig) != HAL_OK) { Error_Handler(); } } void Error_Handler(void) { while(1) { } } &sharpifdef USE_FULL_ASSERT void assert_failed(uint8_t* file, uint32_t line) { } &sharpendif #stm32f767zi-nucleo

[Tesla DeLorean]

Posted on November 02, 2016 at 21:51

You enable clock?

  __HAL_RCC_ADC3_CLK_ENABLE();ADC3 Example  STM32Cube_FW_F7_V1.3.0\Projects\STM32746G-Discovery\Examples\ADC\ADC_RegularConversion_DMA

[mohsen]

Posted on November 02, 2016 at 22:06

STM32CubeMX add that line in the other file. however, I add it to min file, did not change any thing.

I use same code for ADC1 and ADC2 and works. only ADC3 does not work

[Tesla DeLorean]

Posted on November 02, 2016 at 23:53

Try porting the cited example.

I have no visibility to code you don't post. Could you be specific about the pin you are using? Is the pin/channel association correct? Is the pin tied to ground, does it conflict with other hardware on the board? Have you tried other pins/channels?

[Walid FTITI_O]

Posted on November 03, 2016 at 12:31

Hi Mohsen, 

If the application is already programmed in Dual or Triple mode , ii will be a problem when trying to work with only ADC3 (independent mode) because it was configured as a slave to ADC1.Maks sure that ''MULTI'' bit fileds in ADC_CCR register is at it reset value 0 ( ALL ADC independent case) . You can reconfigure it using  HAL_ADCEx_MultiModeConfigChannel()For CubeMX using, in this case  you should reprogram the tool to deselect ADC1 and ADC2 and only select ADC3. In case you will work with the trip ADCs , you select them all and you select triple mode as the MULTI mode.-Hannibal-