Tcs3472 51单片机颜色识别代码
时间: 2023-11-08 20:04:20 浏览: 51
以下是基于51单片机的TCS3472颜色识别代码,需要使用I2C通信协议:
```c
#include <reg51.h>
#include <intrins.h>
#define SDA P2_1
#define SCL P2_0
#define TCS3472_ADDR 0x29
void delay_us(unsigned int us)
{
while(us--)
{
_nop_();
_nop_();
_nop_();
_nop_();
}
}
void delay_ms(unsigned int ms)
{
while(ms--)
{
delay_us(1000);
}
}
void i2c_start()
{
SDA = 1;
SCL = 1;
delay_us(5);
SDA = 0;
delay_us(5);
}
void i2c_stop()
{
SDA = 0;
delay_us(5);
SCL = 1;
delay_us(5);
SDA = 1;
delay_us(5);
}
void i2c_ack()
{
SDA = 0;
delay_us(5);
SCL = 1;
delay_us(5);
SCL = 0;
delay_us(5);
SDA = 1;
delay_us(5);
}
void i2c_nack()
{
SDA = 1;
delay_us(5);
SCL = 1;
delay_us(5);
SCL = 0;
delay_us(5);
SDA = 1;
delay_us(5);
}
void i2c_send_byte(unsigned char byte_data)
{
unsigned char i;
for(i=0;i<8;i++)
{
if(byte_data & 0x80)
SDA = 1;
else
SDA = 0;
delay_us(5);
SCL = 1;
delay_us(5);
SCL = 0;
byte_data <<= 1;
}
i2c_ack();
}
unsigned char i2c_receive_byte()
{
unsigned char i;
unsigned char byte_data = 0;
for(i=0;i<8;i++)
{
SCL = 1;
delay_us(5);
if(SDA)
byte_data |= (0x80 >> i);
SCL = 0;
delay_us(5);
}
return byte_data;
}
void tcs3472_init()
{
i2c_start();
i2c_send_byte(TCS3472_ADDR<<1);
i2c_send_byte(0x80); //Enable the device
i2c_send_byte(0x03); //Gain 1x
i2c_send_byte(0x01); //Integration time 101ms
i2c_send_byte(0x00); //Disable WLONG
i2c_send_byte(0x00); //Power ON
i2c_stop();
}
void tcs3472_read(unsigned char *red, unsigned char *green, unsigned char *blue, unsigned char *clear)
{
unsigned char data[8];
i2c_start();
i2c_send_byte(TCS3472_ADDR<<1);
i2c_send_byte(0x96); //Read clear low byte
i2c_start();
i2c_send_byte((TCS3472_ADDR<<1) | 1);
data[0] = i2c_receive_byte();
i2c_ack();
data[1] = i2c_receive_byte();
i2c_ack();
data[2] = i2c_receive_byte();
i2c_ack();
data[3] = i2c_receive_byte();
i2c_ack();
data[4] = i2c_receive_byte();
i2c_ack();
data[5] = i2c_receive_byte();
i2c_ack();
data[6] = i2c_receive_byte();
i2c_nack();
i2c_stop();
*clear = data[1];
*red = data[3];
*green = data[5];
*blue = data[7];
}
void main()
{
unsigned char red, green, blue, clear;
tcs3472_init();
while(1)
{
tcs3472_read(&red, &green, &blue, &clear);
//进行相关处理
delay_ms(50);
}
}
```
注意,这只是一个简单的示例代码,需要根据实际情况进行修改和完善。