stm32f103实现gy906红外测温仪

实现GY906红外测温仪需要以下步骤：

1.连接GY906模块

将GY906模块的SCL和SDA引脚分别连接到STM32F103的I2C1的SCL和SDA引脚上，同时将GY906模块的GND和VCC引脚分别连接到STM32F103的GND和3.3V引脚上。

2.初始化I2C总线

使用STM32F103的I2C1接口，需要初始化I2C总线。具体实现可以使用STM32CubeMX自动生成代码。

3.读取GY906数据

通过I2C总线向GY906模块发送读取温度命令，并接收GY906返回的温度数据。具体实现可以参考GY906模块的说明书，根据从GY906模块返回的数据计算出温度值。

4.显示温度值

将计算出的温度值通过串口或者LCD等方式显示出来。

下面是一个简单的示例代码：

#include "stm32f10x.h"
#include "stdio.h"

#define GY906_ADDR 0x5A

void I2C_Configuration(void);
float getTemperature(void);

int main()
{
    I2C_Configuration();
    float temperature;
    while(1)
    {
        temperature = getTemperature();
        printf("temperature:%.2f\r\n", temperature);
    }
}

void I2C_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    I2C_InitTypeDef I2C_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    I2C_DeInit(I2C1);
    I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
    I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
    I2C_InitStructure.I2C_OwnAddress1 = 0x00;
    I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
    I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
    I2C_InitStructure.I2C_ClockSpeed = 100000;
    I2C_Init(I2C1, &I2C_InitStructure);
    I2C_Cmd(I2C1, ENABLE);
}

float getTemperature(void)
{
    uint8_t data[3];
    float temperature;

    // Send read command
    I2C_GenerateSTART(I2C1, ENABLE);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
    I2C_Send7bitAddress(I2C1, GY906_ADDR << 1, I2C_Direction_Transmitter);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
    I2C_SendData(I2C1, 0x07);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
    I2C_GenerateSTOP(I2C1, ENABLE);

    // Read temperature data
    I2C_GenerateSTART(I2C1, ENABLE);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
    I2C_Send7bitAddress(I2C1, GY906_ADDR << 1, I2C_Direction_Receiver);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED));
    data[0] = I2C_ReceiveData(I2C1);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED));
    data[1] = I2C_ReceiveData(I2C1);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED));
    data[2] = I2C_ReceiveData(I2C1);
    I2C_AcknowledgeConfig(I2C1, DISABLE);
    I2C_GenerateSTOP(I2C1, ENABLE);

    // Calculate temperature
    temperature = (data[0] + (data[1] << 8)) * 0.02 - 273.15;

    return temperature;
}

注意：以上代码仅供参考，具体实现需要根据GY906模块的说明书和STM32F103的数据手册进行修改。