51单片机TSL2561光强检测程序 12864液晶显示 -

#include
#include
#include
/*********************************************
下均为IIC和光强所需程序
**********************************************/
#include
//设备读写地址
////命令控制寄存器
#define CONTROL 0x80
#define TIMING 0x81
#define DATA0LOW 0x8C
#define DATA0HIGH 0x8D
#define DATA1LOW 0x8E
#define DATA1HIGH 0x8F
//TSL2561地址
typedef signed int sint;
typedef unsigned long u32;
uint DataLow0,DataHigh0,DataLow1,DataHigh1;
float ratioc;
sint Lux=0;
uchar command,temp;
uint Channel1,Channel0;
void i2c_delay() //10us
{
unsigned char a,b;
for(b=1;b>0;b--)
for(a=2;a>0;a--);
}
//初始化延时函数
void init_delay(void)
{
static time =10000;
while(time--);
}
//初始化函数
void i2c_init(void)
{
i2c_scl = 1;//释放时钟线
init_delay();
i2c_sda = 1;//释放数据线
init_delay();
}
//起始信号
void i2c_start(void)
{
i2c_sda=1;
i2c_delay();
i2c_scl=1;
i2c_delay();
i2c_sda=0;
i2c_delay();
i2c_scl=0;
i2c_delay();
}
//停止信号
void i2c_stop(void)
{
i2c_sda = 0;
i2c_delay();
i2c_scl = 1;
i2c_delay();
i2c_sda = 1;
i2c_delay();
}
uchar write_byte(unsigned char dat)
{
unsigned char a=0,b=0;//最大255，一个机器周期为1us，最大延时255us。
for(a=0;a<8;a++)//要发送8位，从最高位开始
{
i2c_sda=dat>>7; //起始信号之后SCL=0，所以可以直接改变SDA信号
dat=dat<<1;
i2c_delay();
i2c_scl=1;
i2c_delay();//建立时间>4.7us
i2c_scl=0;
i2c_delay();//时间大于4us
}
i2c_sda=1;
i2c_delay();
i2c_scl=1;
while(i2c_sda)//等待应答，也就是等待从设备把SDA拉低
{
b++;
if(b>200) //如果超过2000us没有应答发送失败，或者为非应答，表示接收结束
{
i2c_scl=0;
i2c_delay();
return 0;
}
}
i2c_scl=0;
i2c_delay();
return 1;
}
unsigned char read_byte()
{
unsigned char a=0,dat=0;
i2c_sda=1; //起始和发送一个字节之后SCL都是0
i2c_delay();
for(a=0;a<8;a++)//接收8个字节
{
i2c_scl=1;
i2c_delay();
dat<<=1;
dat|=i2c_sda;
i2c_delay();
i2c_scl=0;
i2c_delay();
}
return dat;
}
//TSL2561写函数
//-------------------------------------------------
void TSL2561_Write(uchar command,uchar date)
{
i2c_start();
write_byte(SLAVE_ADDR_WR);
//respons();
write_byte(command);
//respons();
write_byte(date);
//respons();
i2c_stop();
}
//读函数
//-------------------------------------------------
uchar TSL2561_Read(uchar command)
{
uchar date;
i2c_start();
write_byte(SLAVE_ADDR_WR);
//respons();
write_byte(command);
//respons();
i2c_start();
write_byte(SLAVE_ADDR_WR+1);
//respons();
date=read_byte();
i2c_stop();
return date;
}
//------------------------------------------
//读取光照强度
sint Read_Light(void)
{
DataLow0 = TSL2561_Read(DATA0LOW);
DataHigh0 = TSL2561_Read(DATA0HIGH);
Channel0 = 256*DataHigh0 + DataLow0;
//------------------------------
DataLow1 = TSL2561_Read(DATA1LOW);
DataHigh1 = TSL2561_Read(DATA1HIGH);
Channel1 = 256*DataHigh1 + DataLow1;
//---------------------------------
//Calculating Lux for tmb封装
ratioc = Channel1/Channel0;
if (0 < ratioc <= 0.50) Lux = 0.0304 * Channel0 - 0.062 * Channel0 *pow((Channel1/Channel0) ,1.4 );
if (0.50 < ratioc <= 0.61) Lux = 0.0224 *Channel0 - 0.031 * Channel1;
if (0.61 < ratioc <= 0.80 )Lux = 0.0128 * Channel0 - 0.0153 * Channel1;
if (0.80 < ratioc <= 1.30) Lux = 0.00146 * Channel0 - 0.00112 * Channel1;
if (ratioc > 1.30) Lux = 0;
return Lux;
}
//直接调用
void tsl2561_Init(void)
{
i2c_init(); //i2c初始化
TSL2561_Write(CONTROL,0x03); //启动原件
init_delay(); //防止数据出错
TSL2561_Write(TIMING,0x02); //积分时间
//TSL2561_Write(0xC6,0x30); //中断
}
/********************************
主函数main
**********************************/
void main()
{
uchar i=0;
uchar code DIS1[]={"光强1:"},code DIS2[]={"光强R-L:"},code DIS3[]={"通道0："},code DIS4[]={"通道1："};
uint ge,shi,bai,qian,wan,W1,Q1,B1,S1,G1,W0,Q0,B0,S0,G0;
sint CH1,RL,CH0; //16位
tsl2561_Init();
LcdInit();
LcdWriteCom(0x80);
while(DIS1[i]!='')
LcdWriteData(DIS1[i++]);
i=0;
LcdWriteCom(0x90);
while(DIS1[i]!='')
LcdWriteData(DIS2[i++]);
i=0;
LcdWriteCom(0x88);
while(DIS1[i]!='')
LcdWriteData(DIS3[i++]);
i=0;
LcdWriteCom(0x98);
while(DIS1[i]!='')
LcdWriteData(DIS4[i++]);
while(1)
{
RL=Read_Light(); //读取光强
CH0=Channel0;
CH1=Channel1;
LcdWriteCom(0x90);
wan=RL/10000;
qian=RL%10000/1000;
bai=RL%10000%1000/100;
shi=RL%10000%1000%100/10;
ge=RL%10000%1000%100%10;
LcdWriteData(0x30+wan);
LcdWriteData(0x30+qian);
LcdWriteData(0x30+bai);
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