2019年10月14日 | 基于STM32F0的ADS1118驱动源程序

项目用到ADS1118作为AD采集，项目使用MCU为STM32F030，使用STM32CubeMX建立工程

单片机源程序如下:

/**

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

  * File Name          : main.c

  * Description        : Main program body

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

  ** This notice applies to any and all portions of this file

  * that are not between comment pairs USER CODE BEGIN and

  * USER CODE END. Other portions of this file, whether 

  * inserted by the user or by software development tools

  * are owned by their respective copyright owners.

  *

  * 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 "main.h"

#include "stm32f0xx_hal.h"

#include "spi.h"

#include "gpio.h"

/* USER CODE BEGIN Includes */

#include "ads1118.h"

/* USER CODE END Includes */

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

/* USER CODE BEGIN PV */

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

/* USER CODE END PV */

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

void SystemClock_Config(void);

/* USER CODE BEGIN PFP */

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

/* USER CODE END PFP */

/* USER CODE BEGIN 0 */

uint16_t ConversionValue;

float ad;

uint16_t count = 0xC283;//0x8283;

/* USER CODE END 0 */

void delay1(uint32_t x)        //x=100W 延时1s(不精确)

{

        uint32_t i=0;

        while(x--)

        {

                i=10;

                while(i--);

        }

}

        uint16_t adValue[4];

        uint32_t conversion;

        uint32_t config;

        float adV[4];

int main(void)

{

  /* USER CODE BEGIN 1 */

        int i = 0;

  /* USER CODE END 1 */

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

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */

  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */

  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */

  MX_GPIO_Init();

  MX_SPI1_Init();

  /* USER CODE BEGIN 2 */

  /* USER CODE END 2 */

  /* Infinite loop */

  /* USER CODE BEGIN WHILE */

  while (1)

  {

  /* USER CODE END WHILE */

  /* USER CODE BEGIN 3 */

                switch(i) {

                case 0:

                        count = 0xc283;

                        break;

                case 1:

                        count = 0xd283;

                        break;

                case 2:

                        count = 0xe283;

                        break;

                case 3:

                        count = 0xf283;

                        break;

                default:

                        count = 0xc283;

                        i = 0;

                        break;

                }

//                ConversionValue = SPI_RW_Reg(count);

//                ad = ConversionValue * 4.096 / 32768;

                conversion = SPI_RW_Reg(count);

                config = conversion & 0x0000FFFE;

                switch(config) {

                case 0x4282:

                        adValue[3] = conversion >> 16;

                        adV[3] = adValue[3] * 4.096 / 32768;

                        break;

                case 0x5282:

                        adValue[0] = conversion >> 16;

                        adV[0] = adValue[0] * 4.096 / 32768;

                        break;

                case 0x6282:

                        adValue[1] = conversion >> 16;

                        adV[1] = adValue[1] * 4.096 / 32768;

                        break;

                case 0x7282:

                        adValue[2] = conversion >> 16;

                        adV[2] = adValue[2] * 4.096 / 32768;

                        break;

                default:

                        break;

                }

//                adV[i] = adValue[i] * 4.096 / 32768;

//                

//                i++;

                if(++i > 3)        i = 0;

                delay1(0x00009fff);

  }

  /* USER CODE END 3 */

}

/** System Clock Configuration

*/

void SystemClock_Config(void)

{

  RCC_OscInitTypeDef RCC_OscInitStruct;

  RCC_ClkInitTypeDef RCC_ClkInitStruct;

    /**Initializes the CPU, AHB and APB busses clocks 

    */

  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;

  RCC_OscInitStruct.HSEState = RCC_HSE_ON;

  RCC_OscInitStruct.HSIState = RCC_HSI_ON;

  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;

  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL6;

  RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;

  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)

  {

    _Error_Handler(__FILE__, __LINE__);

  }

    /**Initializes the CPU, AHB and APB busses clocks 

    */

  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK

                              |RCC_CLOCKTYPE_PCLK1;