Stm32F103 Hal库硬件iic如何访问AM2320温湿度传感器？

管脚配置 PB6 PB7
之前用库函数，一直读不到，换hal库后正常了，因为要在android板上调试，但是板卡没来，只好用stm32 先调试下。
很简单，先初始化i2C1
i2c.c


I2C_HandleTypeDef hi2c1;


/* I2C2 init function */
void MX_I2C1_Init(void)
{
        hi2c1.Instance = I2C1;
        hi2c1.Init.ClockSpeed = 100000;
        hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
        hi2c1.Init.OwnAddress1 = 0;
        hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
        hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
        hi2c1.Init.OwnAddress2 = 0;
        hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
        hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
        if (HAL_I2C_Init(&hi2c1) != HAL_OK)
        {
                //_Error_Handler(__FILE__, __LINE__);
        }
}


void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
{
        GPIO_InitTypeDef GPIO_InitStruct;
        if(i2cHandle->Instance==I2C1)
        {
          
                /* USER CODE BEGIN I2C2_MspInit 0 */
                __HAL_RCC_I2C1_CLK_ENABLE(); //默认情况下这句时钟初始化代码放在了GPIO初始化之后，需要调整到这里，即GPIO初始化前
                /* USER CODE END I2C2_MspInit 0 */
                __HAL_RCC_GPIOB_CLK_ENABLE();
                /**I2C2 GPIO Configuration   
                PB6     ------> I2C2_SCL
                PB7     ------> I2C2_SDA
                */
                GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
                GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
                GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
                HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);


                /* I2C2 clock enable */
                //    __HAL_RCC_I2C2_CLK_ENABLE();
                /* USER CODE BEGIN I2C2_MspInit 1 */


                /* USER CODE END I2C2_MspInit 1 */
        }
}


void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
{


        if(i2cHandle->Instance==I2C1)
        {
                /* USER CODE BEGIN I2C2_MspDeInit 0 */


                /* USER CODE END I2C2_MspDeInit 0 */
                /* Peripheral clock disable */
                __HAL_RCC_I2C1_CLK_DISABLE();
  
                /**I2C2 GPIO Configuration   
                PB6     ------> I2C2_SCL
                PB7    ------> I2C2_SDA
                */
                HAL_GPIO_DeInit(GPIOB, GPIO_PIN_6|GPIO_PIN_7);
                /* USER CODE BEGIN I2C2_MspDeInit 1 */


                /* USER CODE END I2C2_MspDeInit 1 */
        }
}


i2c.h


#ifndef __i2c_H
#define __i2c_H
#ifdef __cplusplus
extern "C" {
#endif


/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"
#include "main.h"


/* USER CODE BEGIN Includes */


/* USER CODE END Includes */


extern I2C_HandleTypeDef hi2c1;


/* USER CODE BEGIN Private defines */


/* USER CODE END Private defines */


//extern void _Error_Handler(char *, int);


void MX_I2C1_Init(void);


/* USER CODE BEGIN Prototypes */


/* USER CODE END Prototypes */


#ifdef __cplusplus
}
#endif


main.c


#include "sys.h"
#include "delay.h"
#include "usart.h"
#include "led.h"
#include "key.h"
#include "exti.h"
#include "i2c.h"


u8 read = 0;
u8 write[8] = {0x56,0x57,0x58,0x59,0x60,0x61,0x62,0x63};


#define AM2320_ADDRESS  0xB8
   
uint8_t IIC_TX_Buffer[]={0x03,0x00,0x04};
uint8_t IIC_RX_Buffer[12];
int16_t pTemperature;
uint16_t pHumidity;




void dataPrint(double a, double b)
{
    printf("humidity : %.1f  Temp:%.1fnr", a,b);
    printf("nr");
}


       
int main(void)
{
    HAL_Init();                              
    Stm32_Clock_Init(RCC_PLL_MUL9);   
        delay_init(72);                      
        uart_init(115200);                                       
        LED_Init();                                                       
        KEY_Init();                                                       
        EXTI_Init();
        MX_I2C1_Init();
        //HAL_I2C_Mem_Write(&hi2c1,0xA0,248,I2C_MEMADD_SIZE_8BIT,write,8,1000);
        //delay_ms(5);
        //HAL_I2C_Mem_Read(&hi2c1,0xA1,255,I2C_MEMADD_SIZE_8BIT,&read,1,100);
       
        //HAL_I2C_Mem_Write(&hi2c1,0xa0,254,I2C_MEMADD_SIZE_8BIT,&write,8,100);
       
        //HAL_I2C_Mem_Read(&hi2c1,0xA1,254,I2C_MEMADD_SIZE_8BIT,&read,8,100);
        HAL_I2C_Master_Transmit(&hi2c1,AM2320_ADDRESS,0,0,10); //唤醒
    delay_ms(3);
    //写温度 湿度指令，对照规格书
        HAL_I2C_Master_Transmit(&hi2c1,AM2320_ADDRESS,IIC_TX_Buffer,3,10);
        delay_ms(3);
        //读温湿度
        HAL_I2C_Master_Receive(&hi2c1,AM2320_ADDRESS,IIC_RX_Buffer,8,10);
               
        //根据规格书计算温湿度值
    pHumidity  =((IIC_RX_Buffer[2] << 8) | IIC_RX_Buffer[3] )/10.0;
    pTemperature =((IIC_RX_Buffer[4] << 8) | IIC_RX_Buffer[5])/10.0;       
  
    while(1)
    {
        delay_ms(1000);   
       //打印        
                dataPrint(pHumidity,pTemperature);
        }
}


其他初始化，找个正点原子的hal库模板工程就行了。