基于keil的max30102C语言驱动程序

以下是基于Keil的MAX30102 C语言驱动程序的示例代码：

#include "stm32f10x.h"
#include "max30102.h"

void MAX30102_Init(void)
{
    // 初始化I2C
    I2C_Init();

    // 设置模式控制寄存器
    uint8_t modeConfig = 0x03; // 测量模式
    MAX30102_WriteReg(MAX30102_MODE_CONFIG, modeConfig);

    // 设置脉冲宽度控制寄存器
    uint8_t pulseWidth = 0x02; // 400us
    MAX30102_WriteReg(MAX30102_SP02_CONFIG, pulseWidth);

    // 设置传感器控制寄存器
    uint8_t spo2Mode = 0x03; // 高分辨率模式
    uint8_t spo2Range = 0x03; // 低信号范围
    uint8_t spo2SampleRate = 0x07; // 400采样/秒
    MAX30102_WriteReg(MAX30102_SPO2_CONFIG, (spo2Mode << 5) | (spo2Range << 2) | spo2SampleRate);
}

void MAX30102_ReadFIFO(uint32_t *red, uint32_t *ir)
{
    uint8_t buffer[6];
    MAX30102_ReadRegs(MAX30102_FIFO_DATA_REG, buffer, 6);

    // 将数据转换为32位整数
    *red = ((uint32_t)buffer[0] << 16) | ((uint32_t)buffer[1] << 8) | buffer[2];
    *ir = ((uint32_t)buffer[3] << 16) | ((uint32_t)buffer[4] << 8) | buffer[5];
}

void MAX30102_WriteReg(uint8_t reg, uint8_t value)
{
    I2C_Start();
    I2C_SendByte(MAX30102_ADDRESS_WRITE);
    I2C_WaitAck();
    I2C_SendByte(reg);
    I2C_WaitAck();
    I2C_SendByte(value);
    I2C_WaitAck();
    I2C_Stop();
}

void MAX30102_ReadRegs(uint8_t reg, uint8_t *buffer, uint8_t length)
{
    I2C_Start();
    I2C_SendByte(MAX30102_ADDRESS_WRITE);
    I2C_WaitAck();
    I2C_SendByte(reg);
    I2C_WaitAck();
    I2C_Start();
    I2C_SendByte(MAX30102_ADDRESS_READ);
    I2C_WaitAck();
    for (uint8_t i = 0; i < length; i++) {
        buffer[i] = I2C_RecvByte();
        if (i == length - 1) {
            I2C_NAck();
        } else {
            I2C_Ack();
        }
    }
    I2C_Stop();
}

void I2C_Init(void)
{
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);

    GPIO_InitTypeDef GPIO_InitStructure;
    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_InitTypeDef I2C_InitStructure;
    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);
}

void I2C_Start(void)
{
    I2C_GenerateSTART(I2C1, ENABLE);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
}

void I2C_Stop(void)
{
    I2C_GenerateSTOP(I2C1, ENABLE);
    while (I2C_GetFlagStatus(I2C1, I2C_FLAG_STOPF));
}

void I2C_SendByte(uint8_t data)
{
    I2C_SendData(I2C1, data);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
}

uint8_t I2C_RecvByte(void)
{
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED));
    uint8_t data = I2C_ReceiveData(I2C1);
    return data;
}

void I2C_Ack(void)
{
    I2C_AcknowledgeConfig(I2C1, ENABLE);
    while (I2C_GetFlagStatus(I2C1, I2C_FLAG_AF));
}

void I2C_NAck(void)
{
    I2C_AcknowledgeConfig(I2C1, DISABLE);
    while (I2C_GetFlagStatus(I2C1, I2C_FLAG_BTF));
}

注意：该代码仅供参考，具体实现可能需要根据您的硬件平台和应用需求进行调整。此外，MAX30102驱动程序的实际实现可能需要更多寄存器配置和数据处理。