AMS TCS3430(arduino/STM32)

Preface

This device features advanced ambient light sensing (ALS) and CIE 1931 tri-stimulus color control (and C light sensing). Each device channel has filters to allow for accurate measurement of the ambient environment, and to measure the color of the environment based on optical characteristics. These are used to calculate chromaticity, illuminance, and color temperature, all of which support various potential applications.

DFRobot_TCS3430	Nucleo-F401RE

Connection layout

• Please note that this board operates at 3.3V, not 5V, and the I2C pins on the sensor board include resistors. If using a soldered circuit board, remember to add additional resistors for proper operation.

Coding Flow

• Before starting sensing, the memory inside the TCS3430 must be reset to avoid causing errors in the I2C write command.

The Sensor Initialization

bool begin()
{ uint8_t x=0x00,y=0x00;
// _pWire->begin();
softReset();
printf("softreset finish nr");
setPowerALSADC();
printf("setPower finish nr");
x=read_register(0x92);//ID=0xDC
y=read_register(0x91);//ID=0x41
if((x!=TCS3430_ID) || (y != TCS3430_REVISION_ID)){
printf("DeviceID=%#x ,RevisionID=%#x nr",x,y);
disableALSADC();
powerOFF();
return false;
}
return true;
}

Initialization table

XData = getXData();
YData = getYData();
ZData = getZData();
IR1Data = getIR1Data();
IR2Data = getIR2Data();
printf("X :%d Y :%d Z :%d IR1 :%d IR2 :%d;nr",XData,YData,ZData,IR1Data,IR2Data);
HAL_Delay(500);

uint16_t getXData()
{
return read_register(eRegCH3DATALAddr);
}

Calibration and Lux/CCT Calculations