STM32CubeMX-多通道ADC-DMA-circular 传输

一，CubeMX生成工程

1，配置ADC引脚

2，时钟配置

3，ADC配置

4，打开中断

5，DMA配置

（这里选择 halfword 应该也可以，程序里面对应存储adc数据的变量也为halfword u16即可）

6，中断配置

红色标注为注意点，不清楚原理，ADC中断和DMZ的关系有待探明。

7，生成代码二，添加代码

数字标注处为添加部分

/**

******************************************************************************

* File Name : main.c

* Date : 12/07/2018 09:41:40

* Description : Main program body

******************************************************************************

*

* COPYRIGHT(c) 2018 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 "stm32f1xx_hal.h"

#include "adc.h"

#include "dma.h"

#include "usart.h"

#include "gpio.h"

/* USER CODE BEGIN Includes */

#include "stdio.h"

/* USER CODE END Includes */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

uint8_t aRxBuffer;

uint32_t ADC_Value[100]; //111111111

uint32_t DMA_Transfer_Complete_Count=0;

uint8_t i;

uint32_t ad1,ad2;

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/

void SystemClock_Config(void);

/* USER CODE BEGIN PFP */

/* 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----------------------------------------------------------*/

/* 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_USART1_UART_Init();

/* USER CODE BEGIN 2 */

printf("nrBEGINnr");

/*##-1- Start the conversion process and enable interrupt ##################*/

//2222222222222

HAL_ADC_Start_DMA(&hadc1, (uint32_t*)&ADC_Value, 100);

HAL_UART_Receive_IT(&huart1,&aRxBuffer,1);

/* USER CODE END 2 */

/* USER CODE BEGIN 3 */

/* Infinite loop */

while (1)

{

printf("nrDUDUDUnr");

HAL_Delay(2000);

ad1 = ADC_Value[1];

ad2 = ADC_Value[2];

printf(" AD1 value = %1.3fV rn", ad1*3.3f/4096); //333333333

printf(" AD2 value = %1.3fV rn", ad2*3.3f/4096);

printf("ÒѾ­Íê³ÉADת»»´ÎÊý£º%dn",DMA_Transfer_Complete_Count);

}

/* USER CODE END 3 */

}

/** System Clock Configuration

*/

void SystemClock_Config(void)

{

RCC_OscInitTypeDef RCC_OscInitStruct;

RCC_ClkInitTypeDef RCC_ClkInitStruct;

RCC_PeriphCLKInitTypeDef PeriphClkInit;

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_DIV2;

RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL8;

HAL_RCC_OscConfig(&RCC_OscInitStruct);

RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK;

RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1);

PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;

PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV4;

HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit);

__HAL_RCC_AFIO_CLK_ENABLE();

}

/* USER CODE BEGIN 4 */

#ifdef __GNUC__

/* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf

set to 'Yes') calls __io_putchar() */

#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)

#else

#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)

#endif /* __GNUC__ */

/**

* @brief Retargets the C library printf function to the USART.

* @param None

* @retval None

*/

PUTCHAR_PROTOTYPE

{

/* Place your implementation of fputc here */

/* e.g. write a character to the EVAL_COM1 and Loop until the end of transmission */

HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xFFFF);

return ch;

}

void HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle)

{

HAL_UART_Transmit(&huart1,&aRxBuffer,1,0);

HAL_UART_Receive_IT(&huart1,&aRxBuffer,1);

}

void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)

//444444444444444

{

DMA_Transfer_Complete_Count++;

}

/* 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 %drn", file, line) */

/* USER CODE END 6 */

}

#endif

/**

* @}

*/

/**

* @}

*/

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

*后在adc.c中将

hadc1.Init.ScanConvMode =ENABLE;

改为：

hadc1.Init.ScanConvMode =ADC_SCAN_ENABLE;

没有改正此处的时候，多通道输出的值都全是**通道的值。

找了大半天才找到是这个位置的问题，在CubeMX中根本没有这个选项，怀疑是个bug。

尽快熟悉HAL库函数吧，不能完全依靠工具，自身能力*可靠。

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