I am currently working on Nucleo F401RE and Bluetooth expansion Board(IDB05A1) of ST microelectronics. I have to frame code in such a way that i have to pass four parameters values to the mobile through an android app. So i configured an ADC with four channels with DMA access. According to that i wrote code i am not getting output as i expected.
I have used Cube MX for code generation and Keil version5 IDE for my coding.I have configured DMA global interrupt, ADC four channels, Baud rate:9600 bits/s, and RCC to ceramic.As a first part i did coding for only ADC. I am not getting any errors but the output is not as i expected. Can anyone go through and figure out what mistake i made Thanking you
/* Includes ------------------------------------------------------------------*/ #include "stm32f4xx_hal.h" /* USER CODE BEGIN Includes */ /* USER CODE END Includes */ /* Private variables ---------------------------------------------------------*/ ADC_HandleTypeDef hadc1; DMA_HandleTypeDef hdma_adc1; /* USER CODE BEGIN PV */ /* Private variables ---------------------------------------------------------*/ uint16_t ADC_RESULT[4]; uint16_t FINAL_VALUE[4],COUNT; uint32_t RESULT[4]; /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ void SystemClock_Config(void); static void MX_GPIO_Init(void); static void MX_DMA_Init(void); static void MX_ADC1_Init(void); /* USER CODE BEGIN PFP */ /* Private function prototypes -----------------------------------------------*/ /* USER CODE END PFP */ /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration----------------------------------------------------------*/ HAL_Init(); /* Configure the system clock */ SystemClock_Config(); /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_DMA_Init(); MX_ADC1_Init(); /* USER CODE BEGIN 2 */ HAL_ADC_Start_DMA(&hadc1, (uint32_t*) ADC_RESULT, 4); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ } /* USER CODE END 3 */ } /** System Clock Configuration */ void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct; RCC_ClkInitTypeDef RCC_ClkInitStruct; __PWR_CLK_ENABLE(); __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); 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 = 336; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4; RCC_OscInitStruct.PLL.PLLQ = 7; HAL_RCC_OscConfig(&RCC_OscInitStruct); RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2); HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000); HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK); /* SysTick_IRQn interrupt configuration */ HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0); } /* ADC1 init function */ void MX_ADC1_Init(void) { ADC_ChannelConfTypeDef sConfig; /**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion) */ hadc1.Instance = ADC1; hadc1.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV4; hadc1.Init.Resolution = ADC_RESOLUTION12b; hadc1.Init.ScanConvMode = DISABLE; hadc1.Init.ContinuousConvMode = DISABLE; hadc1.Init.DiscontinuousConvMode = ENABLE; hadc1.Init.NbrOfDiscConversion = 1; hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc1.Init.NbrOfConversion = 1; hadc1.Init.DMAContinuousRequests = DISABLE; hadc1.Init.EOCSelection = EOC_SINGLE_CONV; HAL_ADC_Init(&hadc1); /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time. */ sConfig.Channel = ADC_CHANNEL_0; sConfig.Rank = 1; sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES; HAL_ADC_ConfigChannel(&hadc1, &sConfig); } /** * Enable DMA controller clock */ void MX_DMA_Init(void) { /* DMA controller clock enable */ __DMA2_CLK_ENABLE(); /* DMA interrupt init */ HAL_NVIC_SetPriority(DMA2_Stream0_IRQn, 0, 0); HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn); } void MX_GPIO_Init(void) { /* GPIO Ports Clock Enable */ __GPIOH_CLK_ENABLE(); __GPIOA_CLK_ENABLE(); } /* USER CODE BEGIN 4 */ void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef *hadc1) { if(COUNT<800) { COUNT++; RESULT[0] = RESULT[0] + ADC_RESULT[0]; RESULT[1] = RESULT[1] + ADC_RESULT[1]; RESULT[2] = RESULT[2] + ADC_RESULT[2]; RESULT[3] = RESULT[3] + ADC_RESULT[3]; } else { FINAL_VALUE[0] = RESULT[0]/800; FINAL_VALUE[1] = RESULT[1]/800; FINAL_VALUE[2] = RESULT[2]/800; FINAL_VALUE[3] = RESULT[3]/800; COUNT = 0; RESULT[0] = RESULT[1] = RESULT[2] = RESULT[3] = 0; } //ADC_READ_RESULT = ADC_RESULT; HAL_ADC_Start_DMA(hadc1, (uint32_t*) ADC_RESULT,4); //ADC_READ_RESULT = ADC_RESULT ; } /* USER CODE END 4 */ #ifdef USE_FULL_ASSERT void assert_failed(uint8_t* file, uint32_t line) { /* USER CODE BEGIN 6 */ /* User can add his own implementation to report the file name and line number, ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ /* USER CODE END 6 */ } #endif