[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.