makefun颜色识别模块一些总结（假ZC-CLS381）

模块样子如下：

 

模块号称使用ZC-CLS381芯片识别颜色，但其实不是（其实是TCS34721/TCS34725）

前期找来了ZC-CLS381芯片的手册

 

 连模块地址都不一样。。。。

经过波折终于有以下程序  ADDR 0x29

#include"i2c.h"
#include "SEGGER_RTT.h"
typedef enum {
    TCS34725_INTEGRATIONTIME_2_4MS  = 0xFF,   ///<  2.4ms - 1 cycle    - Max Count: 1024
    TCS34725_INTEGRATIONTIME_24MS   = 0xF6,   ///<  24ms  - 10 cycles  - Max Count: 10240
    TCS34725_INTEGRATIONTIME_50MS   = 0xEB,   ///<  50ms  - 20 cycles  - Max Count: 20480
    TCS34725_INTEGRATIONTIME_101MS  = 0xD5,   ///<  101ms - 42 cycles  - Max Count: 43008
    TCS34725_INTEGRATIONTIME_154MS  = 0xC0,   ///<  154ms - 64 cycles  - Max Count: 65535
    TCS34725_INTEGRATIONTIME_700MS  = 0x00    ///<  700ms - 256 cycles - Max Count: 65535
}
tcs34725IntegrationTime_t;

typedef enum {
    TCS34725_GAIN_1X                = 0x00,   ///<  No gain
    TCS34725_GAIN_4X                = 0x01,   ///<  4x gain
    TCS34725_GAIN_16X               = 0x02,   ///<  16x gain
    TCS34725_GAIN_60X               = 0x03    ///<  60x gain
}
tcs34725Gain_t;

#define TCS34725_CDATAL           (0x14)    ///< Clear channel data 
#define TCS34725_CDATAH           (0x15)
#define TCS34725_RDATAL           (0x16)    ///< Red channel data 
#define TCS34725_RDATAH           (0x17)
#define TCS34725_GDATAL           (0x18)    ///< Green channel data 
#define TCS34725_GDATAH           (0x19)
#define TCS34725_BDATAL           (0x1A)    ///< Blue channel data 
#define TCS34725_BDATAH           (0x1B)

uint32_t CS_DATA_IR = 0, CS_DATA_GREEN = 0, CS_DATA_RED = 0, CS_DATA_BLUE = 0;

uint8_t mregister[] = {TCS34725_CDATAL | 0x80, TCS34725_CDATAH | 0x80, TCS34725_RDATAL | 0x80, TCS34725_RDATAH | 0x80, TCS34725_GDATAL | 0x80, TCS34725_GDATAH | 0x80, TCS34725_BDATAL | 0x80, TCS34725_BDATAH | 0x80};
uint8_t recvbuff[64] = {0};
uint8_t mysendbuf[256] = {0};

int main() {
    uint32_t j = 0;
    SEGGER_RTT_Init();
    Si2c_initial();
    MY_Si2c_unlockbus(0);
    recvbuff[0] = 0x12 | 0x80;
    MY_Si2c_writeandread( 0, MY_SI2C_ADDR1, &recvbuff[0], 1, &recvbuff[1], 1);//0x44 TCS34721/TCS34725

    while(1) {
        recvbuff[0] = 0x01 | 0x80; //采样时间
        recvbuff[1] = TCS34725_INTEGRATIONTIME_154MS;
        MY_Si2c_Multibyte_sending( 0, MY_SI2C_ADDR1, recvbuff, 2);
        recvbuff[0] = 0x0F | 0x80; //放大倍数
        recvbuff[1] = TCS34725_GAIN_16X;
        MY_Si2c_Multibyte_sending( 0, MY_SI2C_ADDR1, recvbuff, 2);
        recvbuff[0] = 0x00 | 0x80; //开始采样
        recvbuff[1] = 0x01;
        MY_Si2c_Multibyte_sending( 0, MY_SI2C_ADDR1, recvbuff, 2);

        for(j = 0; j < 20000; j++);

        recvbuff[0] = 0x00 | 0x80;
        recvbuff[1] = 0x01 | 0x02;
        MY_Si2c_Multibyte_sending( 0, MY_SI2C_ADDR1, recvbuff, 2);
        MY_Si2c_writeandread( 0, MY_SI2C_ADDR1, &mregister[0], 1, &recvbuff[0], 2);
        //MY_Si2c_writeandread( 0, MY_SI2C_ADDR1, &mregister[1], 1, &recvbuff[1], 1);
        CS_DATA_IR = recvbuff[1] << 8 | recvbuff[0];
        MY_Si2c_writeandread( 0, MY_SI2C_ADDR1, &mregister[2], 1, &recvbuff[0], 2);
        //MY_Si2c_writeandread( 0, MY_SI2C_ADDR1, &mregister[3], 1, &recvbuff[1], 1);
        CS_DATA_RED = recvbuff[1] << 8 | recvbuff[0];
        MY_Si2c_writeandread( 0, MY_SI2C_ADDR1, &mregister[4], 1, &recvbuff[0], 2);
        //MY_Si2c_writeandread( 0, MY_SI2C_ADDR1, &mregister[5], 1, &recvbuff[1], 1);
        CS_DATA_GREEN = recvbuff[1] << 8 | recvbuff[0];
        MY_Si2c_writeandread( 0, MY_SI2C_ADDR1, &mregister[6], 1, &recvbuff[0], 2);
        //MY_Si2c_writeandread( 0, MY_SI2C_ADDR1, &mregister[7], 1, &recvbuff[1], 1);
        CS_DATA_BLUE = recvbuff[1] << 8 | recvbuff[0];

        for(j = 0; j < 5000000; j++);//不同的采样要有不同的延时

        sprintf(mysendbuf, "CS_DATA_IR:%d CS_DATA_RED:%d CS_DATA_GREEN:%d CS_DATA_BLUE:%d\r\n", CS_DATA_IR, CS_DATA_RED, CS_DATA_GREEN, CS_DATA_BLUE);
        SEGGER_RTT_printf(0, "%s", mysendbuf);

    }

    return 0;
}

发出开始转换指令后一定要第一时间读取颜色寄存器值，这里推测读取的是上一次的颜色值，不读取的话新转换的值更新不进去，然后就是读取完之后，一定要有足够的时间等待转换结束，否则数值不更新