opt3001光线传感器问题求助

1楼-- · 2019-03-25 00:28

程序的流程如下，先读ManufacturerID和DeviceID，然后配置Configuration为0xCC10，等待800ms转换时间，判断CRF位是否为1（转换完成），进行Result值的读取，代码如下
      opt3001ManufacturerIdRead = opt3001i2cReadRegsiter(OPT3001_MANUFACTURER_ID_REGISTER_ADDRESS);
      delay_xms(10);
      opt3001DeviceIdRead = opt3001i2cReadRegsiter(OPT3001_DEVICE_ID_REGISTER_ADDRESS);
      delay_xms(10);
      while(1)
      {
            opt3001i2cWriteRegsiter(OPT3001_CONFIGURATION_REGISTER_ADDRESS, opt3001SetConfigurationRegister);

            /*       OPT3001 Resualt Read -- I2C Read       */
            delay_xms(CONVERSION_TIME_800MS);
            opt3001ConfigurationRead = opt3001i2cReadRegsiter(OPT3001_CONFIGURATION_REGISTER_ADDRESS);

            if(opt3001ConfigurationRead & (1 << OPT3001_CONFIGURATION_CRF))             // 判断是否转换完成， CRF = 1 ：转换完成
            {
                     opt3001ResultRead = opt3001i2cReadRegsiter(OPT3001_RESULT_REGISTER_ADDRESS);

                     exponent = opt3001ResultRead >> 12;                      // 分离出指数部分
                     msntissa = opt3001ResultRead & 0x0fff;             // 分离出尾数部分

                     if(exponent < 12)       // exponent最大取值为1011B
                     {
                              //lsb_size = 0.01 * (2 << exponent);
                              //lux = lsb_size * fractional;
                              //intLux = (long)lux;
                              //len = IntToString(str, intLux);       //整数部分转换为字符串
                              len = IntToString(str, exponent);       //整数部分转换为字符串
                     }
                     UartInit(9600);
                  SendString("The Lux is : ");
                     SendString(str);
            }
            //else       // 重新配置Configuration Register
                     opt3001i2cWriteRegsiter(OPT3001_CONFIGURATION_REGISTER_ADDRESS, opt3001SetConfigurationRegister);