Instead using the ESP32, I connected a BME680 to a Heltec LoRa 32 V2 board.
As per Rui’s instruction in the I2C chapter, I wrote an address scanner (with special twowire handling to reflect changed SCA and SDL pins) and identified 0x77 as sensor. Which is correct.
Now I tried to change the BME680 sample code to also reflect different pins for SCA and SDL.
My code doesn’t work. – Any idea what needs to be changed?


/***************************************************************************
This is a library for the BME680 gas, humidity, temperature & pressure sensor

Designed specifically to work with the Adafruit BME680 Breakout
—-> http://www.adafruit.com/products/3660

These sensors use I2C or SPI to communicate, 2 or 4 pins are required
to interface.

Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing products
from Adafruit!

Written by Limor Fried & Kevin Townsend for Adafruit Industries.
BSD license, all text above must be included in any redistribution
***************************************************************************/

#include
#include
#include “Adafruit_BME680.h”

#define I2C_SDA 17
#define I2C_SCL 22

/*
#define BME_SCK 13
#define BME_MISO 12
#define BME_MOSI 11
#define BME_CS 10
*/

#define SEALEVELPRESSURE_HPA (1013.25)

TwoWire I2CBME = TwoWire(0);
Adafruit_BME680 bme; // I2C
//Adafruit_BME680 bme(BME_CS); // hardware SPI
//Adafruit_BME680 bme(BME_CS, BME_MOSI, BME_MISO, BME_SCK);

void setup() {
Serial.begin(9600);
Serial.println(F(“BME680 test”));
I2CBME.begin(I2C_SDA, I2C_SCL, 100000);

bool status;

status = bme.begin(0x77, &I2CBME);

if (!status) {
Serial.println(“Could not find a valid BME680 sensor, check wiring!”);
while (1);
}

// Set up oversampling and filter initialization
bme.setTemperatureOversampling(BME680_OS_8X);
bme.setHumidityOversampling(BME680_OS_2X);
bme.setPressureOversampling(BME680_OS_4X);
bme.setIIRFilterSize(BME680_FILTER_SIZE_3);
bme.setGasHeater(320, 150); // 320*C for 150 ms
}

void loop() {
if (! bme.performReading()) {
Serial.println(“Failed to perform reading :(“);
return;
}
Serial.print(“Temperature = “);
Serial.print(bme.temperature);
Serial.println(” *C”);

Serial.print(“Pressure = “);
Serial.print(bme.pressure / 100.0);
Serial.println(” hPa”);

Serial.print(“Humidity = “);
Serial.print(bme.humidity);
Serial.println(” %”);

Serial.print(“Gas = “);
Serial.print(bme.gas_resistance / 1000.0);
Serial.println(” KOhms”);

Serial.print(“Approx. Altitude = “);
Serial.print(bme.readAltitude(SEALEVELPRESSURE_HPA));
Serial.println(” m”);

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

Error message: Failed to perform reading 🙁

Any help would be great and enjoy the peaceful time between the years!

-Pit