Example Code for Arduino-SYNS Mode

Hardware Preparation

• DFRduino UNO R3 (or similar) x 1
• AS7341 Visible Light Sensor x1
• Wires

Software Preparation

• Arduino IDE
• Download and install the AS7341 library and Sample Code. (About how to install the library?)

Wiring Diagram

Other Preparation Work

Give a falling edge signal to the sensor's GPIO to trigger the measurement.

Sample Code

/*!
 * @file synsMode.ino
 * @brief Read spectrum data by syns mode. The chip's measurement function needs to be activated by a level pulse for each measurement.
    The chip will enter idle mode when the measurement is done, which could save power.
 * 
 * @copyright   Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
 * @licence     The MIT License (MIT)
 
 * @author [fengli]([email protected])
 * @version  V1.0
 * @date  2020-07-16
 * @get from https://www.dfrobot.com
 * @url https://github.com/DFRobot/DFRobot_AS7341
 */
#include "DFRobot_AS7341.h"
/*!
 * @brief Construct the function
 * @param pWire IC bus pointer object and construction device, can both pass or not pass parameters, Wire in default.
 */
DFRobot_AS7341 as7341;

void setup(void)
{
  Serial.begin(115200);
  //Detect if IIC can communicate properly
  while (as7341.begin(as7341.eSyns) != 0) {
    Serial.println("IIC init failed, please check if the wire connection is correct");
    delay(1000);
  }
  //Integration time = (ATIME + 1) x (ASTEP + 1) x 2.78µs
  //Set the value of register ATIME, through which the value of Integration time can be calculated. The value represents the time that must be spent during data reading.
  as7341.setAtime(29);
  //Set the value of register ASTEP, through which the value of Integration time can be calculated. The value represents the time that must be spent during data reading.
  as7341.setAstep(599);
  //Set gain value(0~10 corresponds to X0.5,X1,X2,X4,X8,X16,X32,X64,X128,X256,X512)
  as7341.setAGAIN(7);
  as7341.startMeasure(as7341.eF1F4ClearNIR);
}

DFRobot_AS7341::sModeOneData_t data1;

void loop(void)
{
  //If the sensor has data to read, then read and print the data.
  if(as7341.measureComplete()){
    //Read the value of sensor data channel 0~5, under eF1F4ClearNIR
    data1 = as7341.readSpectralDataOne();
    Serial.print("F1(405-425nm):");
    Serial.println(data1.ADF1);
    Serial.print("F2(435-455nm):");
    Serial.println(data1.ADF2);
    Serial.print("F3(470-490nm):");
    Serial.println(data1.ADF3);
    Serial.print("F4(505-525nm):");   
    Serial.println(data1.ADF4);
    Serial.print("Clear:");
    Serial.println(data1.ADCLEAR);
    Serial.print("NIR:");
    Serial.println(data1.ADNIR);
  }
}

Result