基于MSP430F149与BH1750FVI进行光强度的值在LCD1602显示

void Multiple_Read_BH1750(void)
{
unsigned char i;
BH1750_Start();//起始信号
BH1750_SendByte(0x47);//发送设备地址+读信号

for (i = 0; i < 3; i++){//连续读取6个地址数据，存储中BUF
BUF[i] = BH1750_RecvByte();//BUF[0]存储0x32地址中的数据
if (i == 3) {


mnack();//最后一个数据需要回NOACK
}
else {

BH1750_SendACK();//回应ACK
}
}
BH1750_Stop();//停止信号
Delay5ms();
}
void conversion(unsigned int temp_data)//数据转换出 个，十，百，千，万
{
wan = temp_data / 10000 + 0x30;
temp_data = temp_data % 10000;//取余运算

qian = temp_data / 1000 + 0x30;
temp_data = temp_data % 1000;//取余运算

bai = temp_data / 100 + 0x30;
temp_data = temp_data % 100;//取余运算

shi = temp_data / 10 + 0x30;
temp_data = temp_data % 10;//取余运算

ge = temp_data + 0x30;
}

void WaitForEnable(void)
{
DataDir &= 0x00;

CLR_RS;
SET_RW;
_NOP();
SET_EN;
_NOP();
_NOP();

while((P4IN & Busy)!=0);//检测忙标志//STA7为0 允许读写操作使能则退出循环

CLR_EN;

DataDir |= 0xFF;//将P4口切换为输出状态
}
void WriteCommandLCM(unsigned char CMD,uchar Attribc)
{
if(Attribc)
WaitForEnable();
CLR_RS;
CLR_RW;
_NOP();
DataPort = CMD;
_NOP();
SET_EN;
_NOP();
_NOP();
CLR_EN;
}

void WriteDataLCM(unsigned char dataW)
{
WaitForEnable();
SET_RS;
CLR_RW;
_NOP();
DataPort = dataW;
_NOP();
SET_EN;
_NOP();
_NOP();
CLR_EN;
}
void InitLcd()
{
CtrlDir |= 0x07;//控制线端口设为输出状态
DataDir= 0xFF;//数据端口设为输出状态
WriteCommandLCM(0x38,0);
delay(15);
WriteCommandLCM(0x08,1);
delay(1);
WriteCommandLCM(0x01,1);
delay(1);
WriteCommandLCM(0x06,1);
delay(1);
WriteCommandLCM(0x0c,1);
delay(1);
}
void DisplayOneChar(unsigned char X,unsigned char DData)
{
X |= 0x80;
WriteCommandLCM(X,0);
WriteDataLCM(DData);
}

void inmaindispaly()
{
uint temp;
dis_data=BUF[0];
dis_data=(dis_data<<8)+BUF[1];//合成数据

temp=dis_data;

conversion(temp);//计算数据和显示
DisplayOneChar(0,L);
DisplayOneChar(1,i);
DisplayOneChar(2,g);
DisplayOneChar(3,h);
DisplayOneChar(4,t);
DisplayOneChar(5,:);

DisplayOneChar(7,wan); //显示数据
DisplayOneChar(8,qian);
DisplayOneChar(9,bai);
DisplayOneChar(10,shi);
DisplayOneChar(11,ge);

DisplayOneChar(13,l); ////显示数单位
DisplayOneChar(14,x);
}

int main( void )
{
P4DIR=0XFF;
P5DIR|=0X07;
P3DIR|=0XC0;
WDTCTL = WDTPW + WDTHOLD;// Stop watchdog timer to prevent time out reset
delay(20);//延时200ms
InitLcd();//初始化LCD
Init_BH1750();//初始化BH1750

while(1)
{
Single_Write_BH1750(0x01);// power on
Single_Write_BH1750(0x10);// H- resolution mode

delay(180);//延时180ms

Multiple_Read_BH1750();//连续读出数据，存储在BUF中


inmaindispaly();
delay(1000);

}
}