转而采用了ADC1_AIN0（引脚PA0）采集模拟气压计MPXA6115A。
目前压力变化与输出变化符合气压计曲线( 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,可以通过vrefint校准参 |
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