I2C buses

[tanguy-e]

Hi
Is it possible to use Wire1 for access the OLED display and Wire for the external I2C buses because i need my sensor in Wire ?
I initialize I2C0 and I2C1 as follow

	Wire1.begin(SDA_OLED, SCL_OLED);
	Wire.begin(SDA, SCL);

But i can't figure out how to say the OLED to use Wire1 instead of Wire or there is something i don't understand well ?
Could you help me ?
Thanks
Regards

[tanguy-e]

Sorry but my problem is not what I thought. I tried a simple program using BMP280 sensor :

#include <Wire.h>
#include <Adafruit_BMP280.h>
#include <heltec_unofficial.h>

Adafruit_BMP280 bmp; // I2C


void setup() {
  //heltec_setup();
  Serial.begin(115200);
  while ( !Serial ) delay(100);   // wait for native usb
  Serial.println(F("BMP280 test"));
  unsigned status;
  status = bmp.begin(BMP280_ADDRESS_ALT, BMP280_CHIPID);
  //status = bmp.begin();
  if (!status) {
    Serial.println(F("Could not find a valid BMP280 sensor, check wiring or "
                      "try a different address!"));
    Serial.print("SensorID was: 0x"); Serial.println(bmp.sensorID(),16);
    Serial.print("        ID of 0xFF probably means a bad address, a BMP 180 or BMP 085\n");
    Serial.print("   ID of 0x56-0x58 represents a BMP 280,\n");
    Serial.print("        ID of 0x60 represents a BME 280.\n");
    Serial.print("        ID of 0x61 represents a BME 680.\n");
    while (1) delay(10);
  }

  /* Default settings from datasheet. */
  bmp.setSampling(Adafruit_BMP280::MODE_NORMAL,     /* Operating Mode. */
                  Adafruit_BMP280::SAMPLING_X2,     /* Temp. oversampling */
                  Adafruit_BMP280::SAMPLING_X16,    /* Pressure oversampling */
                  Adafruit_BMP280::FILTER_X16,      /* Filtering. */
                  Adafruit_BMP280::STANDBY_MS_500); /* Standby time. */
}

void loop() {
    Serial.print(F("Temperature = "));
    Serial.print(bmp.readTemperature());
    Serial.println(" *C");

    Serial.print(F("Pressure = "));
    Serial.print(bmp.readPressure());
    Serial.println(" Pa");

    Serial.print(F("Approx altitude = "));
    Serial.print(bmp.readAltitude(1013.25)); /* Adjusted to local forecast! */
    Serial.println(" m");

    Serial.println();
    delay(2000);
}

In this case, all is fine and the values are good.
When i replace these lines :

heltec_setup();
  //Serial.begin(115200);
  //while ( !Serial ) delay(100);   // wait for native usb

The sensor is no more detected.
Some help ?
Thanks