stm32 gy302 iic

STM32是意法半导体（STMicroelectronics）公司推出的一系列基于ARM Cortex-M内核的32位微控制器，广泛应用于工业、汽车、家居等领域。而GY-302是一款数字光强度传感器模块，它采用的芯片为BH1750FVI，可以测量光线的强度，并将其转换为数字信号输出，通信接口为IIC。

因此，STM32 GY302 IIC是指在STM32微控制器上使用GY-302模块，通过IIC接口进行通信，实现对光线强度的测量和处理。

如果您需要更详细的介绍或者有关STM32 GY302 IIC的问题，请具体提出，我会尽力回答。

相关问题

mpu6050 用stm32 iic 库函数

下面是一个简单的使用 STM32 的 I2C 库函数读取 MPU6050 加速度计和陀螺仪数据的示例代码：

#include "stm32f10x.h"
#include "stm32f10x_i2c.h"

#define MPU6050_ADDRESS     0xD0

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

    /* I2C1 clock enable */
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);

    /* GPIOB clock enable */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);

    /* Configure I2C1 pins: SCL and SDA */
    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);

    /* I2C1 configuration */
    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 = 400000;
    I2C_Init(I2C1, &I2C_InitStructure);

    /* Enable I2C1 */
    I2C_Cmd(I2C1, ENABLE);
}

void MPU6050_Init(void)
{
    uint8_t data[2];

    /* Configure MPU6050 */
    data[0] = 0x6B; /* PWR_MGMT_1 register */
    data[1] = 0x00; /* Reset */
    I2C_Write(MPU6050_ADDRESS, data, 2);

    data[0] = 0x1A; /* CONFIG register */
    data[1] = 0x03; /* DLPF_CFG = 3 (Fs = 1 kHz) */
    I2C_Write(MPU6050_ADDRESS, data, 2);

    data[0] = 0x1B; /* GYRO_CONFIG register */
    data[1] = 0x08; /* FS_SEL = 1 (±500 °/s) */
    I2C_Write(MPU6050_ADDRESS, data, 2);

    data[0] = 0x1C; /* ACCEL_CONFIG register */
    data[1] = 0x08; /* AFS_SEL = 1 (±4 g) */
    I2C_Write(MPU6050_ADDRESS, data, 2);
}

void I2C_Write(uint8_t address, uint8_t *data, uint8_t length)
{
    /* While the bus is busy */
    while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));

    /* Generate the start condition */
    I2C_GenerateSTART(I2C1, ENABLE);

    /* Wait until the start condition is sent */
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

    /* Send the slave address and enable writing */
    I2C_Send7bitAddress(I2C1, address, I2C_Direction_Transmitter);

    /* Wait until the address is sent */
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));

    /* Send the data */
    while(length--)
    {
        I2C_SendData(I2C1, *data++);
        while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
    }

    /* Generate the stop condition */
    I2C_GenerateSTOP(I2C1, ENABLE);
}

void I2C_Read(uint8_t address, uint8_t *data, uint8_t length)
{
    /* While the bus is busy */
    while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));

    /* Generate the start condition */
    I2C_GenerateSTART(I2C1, ENABLE);

    /* Wait until the start condition is sent */
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

    /* Send the slave address and enable reading */
    I2C_Send7bitAddress(I2C1, address, I2C_Direction_Receiver);

    /* Wait until the address is sent */
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));

    /* Receive the data */
    while(length--)
    {
        if(length == 0)
        {
            I2C_AcknowledgeConfig(I2C1, DISABLE);
            I2C_GenerateSTOP(I2C1, ENABLE);
        }
        while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED));
        *data++ = I2C_ReceiveData(I2C1);
    }

    I2C_AcknowledgeConfig(I2C1, ENABLE);
}

int main(void)
{
    uint8_t data[14];

    /* Configure I2C */
    I2C_Configuration();

    /* Initialize MPU6050 */
    MPU6050_Init();

    while(1)
    {
        /* Read accelerometer and gyroscope data */
        data[0] = 0x3B; /* ACCEL_XOUT_H register */
        I2C_Write(MPU6050_ADDRESS, data, 1);
        I2C_Read(MPU6050_ADDRESS, data, 14);

        /* Process accelerometer data */
        int16_t ax = (data[0] << 8) | data[1];
        int16_t ay = (data[2] << 8) | data[3];
        int16_t az = (data[4] << 8) | data[5];

        /* Process gyroscope data */
        int16_t gx = (data[8] << 8) | data[9];
        int16_t gy = (data[10] << 8) | data[11];
        int16_t gz = (data[12] << 8) | data[13];
    }
}

在上面的示例代码中，`I2C_Configuration()` 函数用于配置 I2C1 的 GPIO 和参数，`MPU6050_Init()` 函数用于配置 MPU6050 的寄存器，`I2C_Write()` 和 `I2C_Read()` 函数分别用于向 MPU6050 写入数据和读取数据。在主函数中，我们循环读取 MPU6050 的加速度计和陀螺仪数据，并对数据进行处理。

stm32光照强度传感器gy30

GY-30是一款数字光照强度模块，内置了ROHM-BH1750FLV芯片，用于光照强度采集。该芯片适用于获取移动电话液晶显示器和按键背光功率的环境光数据，具有16位分辨率(1~65535)和直接数字输出的特性，省略了复杂的计算和标定过程。它采用IIC总线接口，可以应用于手机、数码相机、车载导航、PDA、LCD显示等设备。芯片内部电路主要包括光敏二极管、I/V转换电路、ADC转换电路和IIC逻辑电路，通过这些电路将光强数据转换为数字信号并通过IIC通信信号传输。\[1\]\[2\]\[3\]
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