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#include <Wire.h>
#include <SFE_BMP180.h>
 
#define TCAADDR 0x70
  void tcaselect(uint8_t i) {
  if (i > 7) return;
 
  Wire.beginTransmission(TCAADDR);
  Wire.write(1 << i);
  Wire.endTransmission();  
}

 const int sensorcount=6; // number of sensor

SFE_BMP180 pressure[sensorcount];

void setup() {
  Serial.begin(9600);
  Wire.begin();
          
  Serial.println("Starting Initialization");     


for (byte tca = 0; tca <= sensorcount; tca++) {
  
  tcaselect(tca); 
  //Serial.println(tca);  
  pressure[tca].begin();
}
Serial.println("Initialization Finished");


}

void loop() 
{ 
  char status;
  char count;
for (byte tca = 0; tca < sensorcount; tca++) { tcaselect(tca); 
  double T,P;
  if (count < 6)
  {
    status = pressure[tca].startTemperature();
    delay(3);
    status = pressure[tca].getTemperature(T);
  }
  status = pressure[tca].startPressure(0);
  delay(3);
  status = pressure[tca].getPressure(P,T);
  Serial.print(millis());
  Serial.print(", ");
  Serial.print(tca);
  Serial.print(", ");
  Serial.print(T,2);
  Serial.print(", ");
  Serial.println(P,2);

  if (count > 40)
  {
    count = 0;
  }
  else count++;
  }
 };