[C] stm32f4disco ADC DMA Zapisuje co drugą komórkę w tablicy zerem

[sop3l]

Skonfigurowałem przez STM32CubeMX 9 wejść analogowych. Podpiąłem wszystkie pod 3V przez rezystor. Po odpaleniu DMA w tablicy co druga wartość jest zapisywana zerem. Dlaczego tak się dzieje? Coś źle skonfigurowałem?

Przy okazji myślę jak efektywnie wysłać tablicę DMA przez CDC. Ktoś może podsunie jakiś pomysł? 🙂

Zrzut ekranu z tablicy:

Kod:

/**
 ******************************************************************************
 * File Name          : main.c
 * Description        : Main program body
 ******************************************************************************
 *
 * COPYRIGHT(c) 2015 STMicroelectronics
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *   1. Redistributions of source code must retain the above copyright notice,
 *      this list of conditions and the following disclaimer.
 *   2. Redistributions in binary form must reproduce the above copyright notice,
 *      this list of conditions and the following disclaimer in the documentation
 *      and/or other materials provided with the distribution.
 *   3. Neither the name of STMicroelectronics nor the names of its contributors
 *      may be used to endorse or promote products derived from this software
 *      without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 ******************************************************************************
 */
/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"
#include "usb_device.h"

/* USER CODE BEGIN Includes */
#include "usbd_cdc_if.h"
#include "stdio.h"
/* USER CODE END Includes */

/* Private variables ---------------------------------------------------------*/
ADC_HandleTypeDef hadc1;
DMA_HandleTypeDef hdma_adc1;

/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/

/* 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 */
uint16_t ADC1ConvertedValues[9];
char send[50];
/* USER CODE END 0 */

int main(void)
{

 /* USER CODE BEGIN 1 */

 /* USER CODE END 1 */

 /* MCU Configuration----------------------------------------------------------*/

 /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
 HAL_Init();

 /* Configure the system clock */
 SystemClock_Config();

 /* Initialize all configured peripherals */
 MX_GPIO_Init();
 MX_DMA_Init();
 MX_ADC1_Init();
 MX_USB_DEVICE_Init();

 /* USER CODE BEGIN 2 */
 	HAL_ADC_Start_DMA(&hadc1, (uint32_t*)ADC1ConvertedValues, 18);
HAL_ADC_Start(&hadc1);
int i;
 /* USER CODE END 2 */

 /* Infinite loop */
 /* USER CODE BEGIN WHILE */
 while (1)
 {
 /* USER CODE END WHILE */
for (i = 0; i < 9; i++)
{
	sprintf(send, "%d/", ADC1ConvertedValues[i]);
	CDC_Transmit_FS((uint8_t*)send, strlen(send));
	HAL_Delay(10);
}
HAL_Delay(5000);
 /* 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_HSE;
 RCC_OscInitStruct.HSEState = RCC_HSE_ON;
 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
 RCC_OscInitStruct.PLL.PLLM = 8;
 RCC_OscInitStruct.PLL.PLLN = 336;
 RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
 RCC_OscInitStruct.PLL.PLLQ = 7;
 HAL_RCC_OscConfig(&RCC_OscInitStruct);

 RCC_ClkInitStruct.ClockType = 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_DIV4;
 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
 HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);

 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 = ENABLE;
 hadc1.Init.ContinuousConvMode = ENABLE;
 hadc1.Init.DiscontinuousConvMode = DISABLE;
 hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
 hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
 hadc1.Init.NbrOfConversion = 9;
 hadc1.Init.DMAContinuousRequests = ENABLE;
 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_1;
 sConfig.Rank = 1;
 sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
 HAL_ADC_ConfigChannel(&hadc1, &sConfig);

   /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time. 
   */
 sConfig.Channel = ADC_CHANNEL_2;
 sConfig.Rank = 2;
 HAL_ADC_ConfigChannel(&hadc1, &sConfig);

   /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time. 
   */
 sConfig.Channel = ADC_CHANNEL_3;
 sConfig.Rank = 3;
 HAL_ADC_ConfigChannel(&hadc1, &sConfig);

   /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time. 
   */
 sConfig.Channel = ADC_CHANNEL_8;
 sConfig.Rank = 4;
 HAL_ADC_ConfigChannel(&hadc1, &sConfig);

   /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time. 
   */
 sConfig.Channel = ADC_CHANNEL_9;
 sConfig.Rank = 5;
 HAL_ADC_ConfigChannel(&hadc1, &sConfig);

   /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time. 
   */
 sConfig.Channel = ADC_CHANNEL_11;
 sConfig.Rank = 6;
 HAL_ADC_ConfigChannel(&hadc1, &sConfig);

   /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time. 
   */
 sConfig.Channel = ADC_CHANNEL_12;
 sConfig.Rank = 7;
 HAL_ADC_ConfigChannel(&hadc1, &sConfig);

   /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time. 
   */
 sConfig.Channel = ADC_CHANNEL_14;
 sConfig.Rank = 8;
 HAL_ADC_ConfigChannel(&hadc1, &sConfig);

   /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time. 
   */
 sConfig.Channel = ADC_CHANNEL_15;
 sConfig.Rank = 9;
 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);

}

/** Configure pins as 
       * Analog 
       * Input 
       * Output
       * EVENT_OUT
       * EXTI
    PC3   ------> I2S2_SD
    PA4   ------> I2S3_WS
    PA5   ------> SPI1_SCK
    PA6   ------> SPI1_MISO
    PA7   ------> SPI1_MOSI
    PB10   ------> I2S2_CK
    PC7   ------> I2S3_MCK
    PC10   ------> I2S3_CK
    PC12   ------> I2S3_SD
    PB6   ------> I2C1_SCL
    PB9   ------> I2C1_SDA
*/
void MX_GPIO_Init(void)
{

 GPIO_InitTypeDef GPIO_InitStruct;

 /* GPIO Ports Clock Enable */
 __GPIOE_CLK_ENABLE();
 __GPIOC_CLK_ENABLE();
 __GPIOH_CLK_ENABLE();
 __GPIOA_CLK_ENABLE();
 __GPIOB_CLK_ENABLE();
 __GPIOD_CLK_ENABLE();

 /*Configure GPIO pin : CS_I2C_SPI_Pin */
 GPIO_InitStruct.Pin = CS_I2C_SPI_Pin;
 GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
 HAL_GPIO_Init(CS_I2C_SPI_GPIO_Port, &GPIO_InitStruct);

 /*Configure GPIO pin : OTG_FS_PowerSwitchOn_Pin */
 GPIO_InitStruct.Pin = OTG_FS_PowerSwitchOn_Pin;
 GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
 HAL_GPIO_Init(OTG_FS_PowerSwitchOn_GPIO_Port, &GPIO_InitStruct);

 /*Configure GPIO pin : PDM_OUT_Pin */
 GPIO_InitStruct.Pin = PDM_OUT_Pin;
 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
 GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
 HAL_GPIO_Init(PDM_OUT_GPIO_Port, &GPIO_InitStruct);

 /*Configure GPIO pin : B1_Pin */
 GPIO_InitStruct.Pin = B1_Pin;
 GPIO_InitStruct.Mode = GPIO_MODE_EVT_RISING;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 HAL_GPIO_Init(B1_GPIO_Port, &GPIO_InitStruct);

 /*Configure GPIO pin : PA4 */
 GPIO_InitStruct.Pin = GPIO_PIN_4;
 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
 GPIO_InitStruct.Alternate = GPIO_AF6_SPI3;
 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

 /*Configure GPIO pins : PA5 PA6 PA7 */
 GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7;
 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
 GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

 /*Configure GPIO pin : BOOT1_Pin */
 GPIO_InitStruct.Pin = BOOT1_Pin;
 GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 HAL_GPIO_Init(BOOT1_GPIO_Port, &GPIO_InitStruct);

 /*Configure GPIO pins : PE7 PE8 PE9 PE10 
                          PE11 PE12 PE13 PE14 
                          PE15 */
 GPIO_InitStruct.Pin = GPIO_PIN_7|GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10 
                         |GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14 
                         |GPIO_PIN_15;
 GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);

 /*Configure GPIO pin : CLK_IN_Pin */
 GPIO_InitStruct.Pin = CLK_IN_Pin;
 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
 GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
 HAL_GPIO_Init(CLK_IN_GPIO_Port, &GPIO_InitStruct);

 /*Configure GPIO pins : LD4_Pin LD3_Pin LD5_Pin LD6_Pin 
                          Audio_RST_Pin */
 GPIO_InitStruct.Pin = LD4_Pin|LD3_Pin|LD5_Pin|LD6_Pin 
                         |Audio_RST_Pin;
 GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
 HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);

 /*Configure GPIO pins : PC7 I2S3_SCK_Pin PC12 */
 GPIO_InitStruct.Pin = GPIO_PIN_7|I2S3_SCK_Pin|GPIO_PIN_12;
 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
 GPIO_InitStruct.Alternate = GPIO_AF6_SPI3;
 HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

 /*Configure GPIO pin : OTG_FS_OverCurrent_Pin */
 GPIO_InitStruct.Pin = OTG_FS_OverCurrent_Pin;
 GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 HAL_GPIO_Init(OTG_FS_OverCurrent_GPIO_Port, &GPIO_InitStruct);

 /*Configure GPIO pins : Audio_SCL_Pin Audio_SDA_Pin */
 GPIO_InitStruct.Pin = Audio_SCL_Pin|Audio_SDA_Pin;
 GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
 GPIO_InitStruct.Pull = GPIO_PULLUP;
 GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
 GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

 /*Configure GPIO pin : MEMS_INT2_Pin */
 GPIO_InitStruct.Pin = MEMS_INT2_Pin;
 GPIO_InitStruct.Mode = GPIO_MODE_EVT_RISING;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 HAL_GPIO_Init(MEMS_INT2_GPIO_Port, &GPIO_InitStruct);

}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

#ifdef USE_FULL_ASSERT

/**
  * @brief Reports the name of the source file and the source line number
  * where the assert_param error has occurred.
  * @param file: pointer to the source file name
  * @param line: assert_param error line source number
  * @retval None
  */
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

/**
 * @}
 */ 

/**
 * @}
*/ 

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

[klonyyy]

Coś krótka ta inicjalizacja DMA. Jaki masz rozmiar danych wysyłanych ? Domyślnie jest to 8 bitowa zmienna.

[sop3l]

Problem był ze zmienną ADC1ConvertedValues. Zmiana na uint32 pomogła.