esp32, MCP3425 I2C ADC test

esp32_mcp3425.ino

/*
 esp32, MCP3425 I2C ADC test.
*/

#include<Wire.h>
//extern "C" {
//#include <user_interface.h>
//}

// MCP3425 I2C address is 0x68(104)
#define Addr 0x68

//const char* ssid = "";
//const char* password = "";
//const char* host = "api.thingspeak.com";
//String mAPI_KEY="your-KEY";

static uint32_t mTimerTmp=0;
static uint32_t mTimerPos=0;
float mTemp=0;
float mHum=0;


//
int get_tempValue(){
  int iRet=0;
  unsigned int data[2]= { 0x00 , 0x00};
  
  Wire.beginTransmission(Addr);
  Wire.write(0x00);
  Wire.endTransmission();
  //
  Wire.requestFrom(Addr, 2);
  if(Wire.available() == 2)
  {
    data[0] = Wire.read();
    data[1] = Wire.read();
  }
  // Convert the data to 12-bits
  int raw_adc = (data[0] & 0x0F) * 256 + data[1];
  //Serial.println("adc.Before=" + String(raw_adc ) + " mV");
  if(raw_adc > 2047)
  {
    raw_adc -= 4096;
  }  
  Serial.print("Digital Value of Analog Input : ");
  Serial.println(raw_adc);
    //Sensor
//  int iTemp = (raw_adc - 424) / 6.25; //電圧値を温度に変換, offset=425
//Serial.println( "iTemp=" + String(iTemp )  );
//  iRet= iTemp;

  return iRet;
}
//
void setup() {
  // put your setup code here, to run once:
  Wire.begin();
  Serial.begin( 115200 );
  Serial.println("#Start-setup");
  // Start I2C Transmission
  Wire.beginTransmission(Addr);
  Wire.write(0x10);
  Wire.endTransmission();
  delay(300);

}

//
void loop() {
    int iTemp =0;
    if( millis() > mTimerTmp){
        mTimerTmp += 5000;
        iTemp =get_tempValue();        
    }
    delay( 100 );
//    Serial.println("t="+ String(millis() )  );
}