自己写的传感器代码

void Single_Write_BH1750(uint8_t REG_Data)

{

while(I2C_GetFlagStatus(I2C1,I2C_FLAG_BUSY)!=RESET);//检测是否总线忙

I2C_TransferHandling(I2C1,SlaveAddress,1,I2C_SoftEnd_Mode,I2C_Generate_Start_Write);

while(I2C_GetFlagStatus(I2C1,I2C_FLAG_TXIS)==RESET);//检测发送

I2C_SendData(I2C1,REG_Data);

while(I2C_GetFlagStatus(I2C1,I2C_FLAG_TC)==RESET);

I2C_GenerateSTOP(I2C1,ENABLE);

while(I2C_GetFlagStatus(I2C1,I2C_FLAG_STOPF)==RESET);//是否停止

}

uint16_t Read_BH1750()

{

uint16_t Recev=0x00;//光强为16位。先发送高8后低8

while(I2C_GetFlagStatus(I2C1,I2C_FLAG_BUSY)!=RESET);//IFBUSY

I2C_TransferHandling(I2C1,SlaveAddress+1,2,I2C_AutoEnd_Mode,I2C_Generate_Start_Read);

while(I2C_GetFlagStatus(I2C1,I2C_FLAG_RXNE)==RESET);

Recev|=I2C_ReceiveData(I2C1);Recev<<=8;

while(I2C_GetFlagStatus(I2C1,I2C_FLAG_RXNE)==RESET);

Recev|=I2C_ReceiveData(I2C1);

while(I2C_GetFlagStatus(I2C1,I2C_FLAG_STOPF)==RESET);

return Recev;

}

void BH1750_Get_Guang(float*Zhaodu)

#include"stm32f10x_lib.h"

#define uchar unsigned char

#define uint unsigned int

#define DataPort P0//LCD1602数据端口

#define SlaveAddress 0x46#define BH1750_SCL GPIO_Pin_14

#define BH1750_SDA GPIO_Pin_15

#define GPIO_I2C GPIOB

#defineBH1750_SCL_0()GPIOF->BRR=BH1750_SCL

#define BH1750_SCL_1()GPIOF->BSRR=BH1750_SCL

#define BH1750_SDA_0()GPIOF->BRR=BH1750_SDA

#define BH1750_SDA_1()GPIOF->BSRR=BH1750_SDA

#define BH1750_SDA_STATE()(GPIOF->IDR&BH1750_SDA)

return(GPIOB->IDR typedefunsigned char BYTE;

typedef unsigned short WORD;BYTE BUF[8];//接收数据缓存区

uchar ge,shi,bai,qian,wan;//显示变量

int dis_data;//变量

void Init_BH1750(void);

void conversion(uint temp_data);void Single_Write_BH1750(ucharREG_Address); uchar Single_Read_BH1750(uchar REG_Address);

void Multiple_Read_BH1750(void);//连续的读取内部寄存器数据

u8BH1750_Start(void);

void BH1750_Stop(void);

u8 BH1750_SendByte(u8 Data);

u8 BH1750_ReceiveByte(void);

void BH1750_SendACK(void);

void BH1750_SendNACK(void);

void BH1750_Nop

(void voidBH1750_Delay(unsigned int u8BH1750_ACK u8BH1750_READYu8BH1750_NACK

u8BH1750_BUS_BUSY

u8BH1750_BUS_ERROR u8BH1750_RETRY_COUNT//重试次数

void BH1750_Nop(void)u8i=50;

while(i)

voidBH1750_Delay(unsigned

int unsignedintu8BH1750_Start(void)BH1750_SDA_1();BH1750_Nop();

BH1750_SCL_1();BH1750_Nop();

if(!BH1750_SDA_STATE())//

//DebugPrint("TWI_START:BUSY\n");

return BH1750_BUS_BUSY;

BH1750_SDA_0();

BH1750_Nop();

BH1750_SCL_0();BH1750_Nop();

if(BH1750_SDA_STATE())//

//DebugPrint("TWI_START:BUSERROR\n");

return BH1750_BUS_ERROR;

returnBH1750_READY;

voidBH1750_Stop(void)

BH1750_SDA_0();BH1750_Nop();

BH1750_SCL_1();BH1750_Nop();

BH1750_SDA_1();BH1750_Nop();//

//DebugPrint("TWI_STOP\n");

voidBH1750_SendACK(void)BH1750_SDA_0();

BH1750_Nop();

BH1750_SCL_1();

BH1750_Nop();

BH1750_SCL_0();

BH1750_Nop();

BH1750_SDA_1();

//DebugPrint("TWI_SendACK\n");

voidBH1750_SendNACK(void)BH1750_SDA_1();

BH1750_Nop();

BH1750_SCL_1();

BH1750_Nop();

BH1750_SCL_0();

BH1750_Nop();//

//DebugPrint("TWI_SendNACK\n");

//---------数据建立----------if(Data&0x80)Data<<=1;BH1750_Nop();//---数据建立保持一定延时----//

BH1750_SCL_1();

BH1750_Nop();

BH1750_SCL_0();

BH1750_Nop();//延时,防止SCL还没变成低时改变SDA,从而产生START/STOP信号//接收从机的应答BH1750_SDA_1();

BH1750_Nop();

BH1750_SCL_1();

BH1750_Nop();

if(BH1750_SDA_STATE())BH1750_SCL_0();BH1750_SDA_1();//

//DebugPrint("TWI_NACK!n");return BH1750_NACK;

BH1750_SCL_0();

BH1750_SDA_1();//

//DebugPrint("TWI_ACK!n");

return BH1750_ACK;

u8BH1750_ReceiveByte(void)u8i,Dat;

BH1750_SDA_1();

BH1750_SCL_0();

Dat=0;BH1750_SCL_1();//产生时钟上升沿[正脉冲],让从机准备好数据BH1750_Nop();

Dat<<=1;if(BH1750_SDA_STATE())//读引脚状态BH1750_SCL_0();//准备好再次接收数据BH1750_Nop();//等待数据准备好//

//DebugPrint("TWI_Dat:%xn",Dat);

return Dat;

//voidconversion(uint temp_data)temp_data=temp_data%10000;

//取余运算

temp_data=temp_data%1000;//取余运算

temp_data=temp_data%100;//取余运算

temp_data=temp_data%10;//取余运算

voidSingle_Write_BH1750(uchar

REG_Address)BH1750_Start();//起始信号

BH1750_SendByte(SlaveAddress);//发送设备地址+写信号

BH1750_SendByte(REG_Address);//内部寄存器地址，

BH1750_SendByte(REG_data);//内部寄存器数据，

BH1750_Stop();//发送停止信号

ucharSingle_Read_BH1750(uchar REG_Address)

ucharREG_data;BH1750_Start();//起始信号

BH1750_SendByte(SlaveAddress);//发送设备地址+写信号

BH1750_SendByte(REG_Address);//发送存储单元地址，从0开始

BH1750_Start();//起始信号

BH1750_SendByte(SlaveAddress+1);//发送设备地址+读信号

REG_data=BH1750_RecvByte();//读出寄存器数

BH1750_SendACK(1);BH1750_Stop();//停止信号

return REG_data;//连续读出BH1750内部数据

voidMultiple_Read_BH1750(void)BH1750_Start();

//起始信号

BH1750_SendByte(SlaveAddress+1);//发送设备地址+读信号

BH1750_ReceiveByte();//BUF[0]存储0x32地址中的数据

BH1750_SendNACK();//最后一个数据需要回NOACK

BH1750_SendACK();//回应

ACK BH1750_Stop();//停止信号//

Delay5ms();BH1750_Delay(500)//初始化BH1750，

void Init_BH1750()

voidBH1750_Get_Guang(float*Zhaodu)//延时100ms

Init_BH1750();//初始化BH1750

Single_Write_BH1750(0x01);

resolutionmode BH1750_Delay(200)//延时180ms

Multiple_Read_BH1750();//连续读出数据，存储在BUF dis_data=BUF[0];

dis_data=(dis_data<<8)+BUF[1];

//合成数据，即光照数据

*Zhaodu=(float)dis_data/1.2;