stm32壓力傳感器

轉(zhuǎn)而采用了ADC1_AIN0（引腳PA0）采集模擬氣壓計(jì)MPXA6115A。
目前壓力變化與輸出變化符合氣壓計(jì)曲線( Vout = Vs x (0.009 x P - 0.095)
[code]
#include "main.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdio.h>
#include <string.h>
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

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

SPI_HandleTypeDef hspi1;

TIM_HandleTypeDef htim1;

UART_HandleTypeDef huart1;
UART_HandleTypeDef huart2;

/* USER CODE BEGIN PV */
uint8_t SC_RxReg;
uint8_t Ticks;
uint8_t K1_Interval;

#define BMP180 0xEE
#define ID180  0xD0
//#define ADDR_24LCxx 0xA0
//#define ADDR_24LCxx_Read 0xA1
uint8_t WriteBuffer[8],ReadBuffer[8];

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART1_UART_Init(void);
static void MX_TIM1_Init(void);
static void MX_SPI1_Init(void);
static void MX_ADC1_Init(void);
static void MX_USART2_UART_Init(void);
/* USER CODE BEGIN PFP */
uint16_t Get_AdcValue(uint32_t ch);
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
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();

  /* 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_USART1_UART_Init();
  MX_TIM1_Init();
  MX_SPI1_Init();
  MX_ADC1_Init();
  MX_USART2_UART_Init();
  /* USER CODE BEGIN 2 */

  HAL_GPIO_WritePin(Run_GPIO_Port, Run_Pin, GPIO_PIN_SET);
  K1_Interval=10;
  Ticks=K1_Interval;

        printf("\r\n***Pressure Sensor Testing***\r\n");
        //IIC_Read_Multiple(BMP180,ID180, ReadBuffer,1);
        //printf("0x%02X  ",ReadBuffer);

        HAL_TIM_Base_Start_IT(&htim1);
        HAL_UART_Receive_IT(&huart1, (uint8_t *)&SC_RxReg, 1);

        uint16_t adcvalue;
        float voltage,VREF=3.3,Vrefint=1.2;//VrefInt=1.2V, 1.16~1.26V,可以通過vrefint校準(zhǔn)參

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