I have two BME280’s connected via I2C, I just want to check the code is correct for startup.
When I unplug one or the other, it shows the relevant message “Error - check sensor no.x”.
But it does not show the other ‘connected’ sensor output in serial monitor.
- Is it ok to use “status =” code for both sensors? (it shows as orange text).
- How to get it to skip past the sensor with the error and show the other sensor output anyway?
Here is the full code:
/***************************************************************************
This is a library for the BME280 humidity, temperature & pressure sensor
Designed specifically to work with the Adafruit BME280 Breakout
----> http://www.adafruit.com/products/2650
These sensors use I2C or SPI to communicate, 2 or 4 pins are required
to interface. The device's I2C address is either 0x76 or 0x77.
Adafruit invests time and resources providing this open source code,
please support Adafruit andopen-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 <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>
#define SEALEVELPRESSURE_HPA (1033.00) //default 1013.25 or 1 ATM
//Setup as I2C
Adafruit_BME280 bme1; // I2C to Vcc (0x77)
Adafruit_BME280 bme2; // I2C to Gnd (0x76)
unsigned long delayTime;
void setup() {
Serial.begin(9600);
Serial.println(F("BME280 test"));
bool status;
// start first sensor
status = bme1.begin(0x77); // I2C - SDO connection to Vcc selects (0x77)
if (!status)
{
Serial.print("Error - check sensor no.1");
while (1);
}
// start second sensor
status = bme2.begin(0x76); // I2C - SDO connection to GND selects (0x76)
if (!status)
{
Serial.print("Error - check sensor no.2");
while (1);
}
Serial.println("-- Default Test --");
delayTime = 5000;
Serial.println();
}
void loop() {
printValues();
delay(delayTime);
}
void printValues() {
Serial.println("Sensor no.1");
Serial.print("Temperature = ");
Serial.print(bme1.readTemperature());
Serial.println(" *C");
Serial.print("Pressure = ");
Serial.print((bme1.readPressure() / 100.0F) + 0);
Serial.println(" hPa");
Serial.print("Approx. Altitude = ");
Serial.print(bme1.readAltitude(SEALEVELPRESSURE_HPA));
Serial.println(" m");
Serial.print("Humidity = ");
Serial.print(bme1.readHumidity());
Serial.println(" %");
Serial.println();
Serial.println("Sensor no.2");
Serial.print("Temperature = ");
Serial.print(bme2.readTemperature());
Serial.println(" *C");
Serial.print("Pressure = ");
Serial.print((bme2.readPressure() / 100.0F) + 0);
Serial.println(" hPa");
Serial.print("Approx. Altitude = ");
Serial.print(bme2.readAltitude(SEALEVELPRESSURE_HPA));
Serial.println(" m");
Serial.print("Humidity = ");
Serial.print(bme2.readHumidity());
Serial.println(" %");
Serial.println("--------------------");
Serial.println();
}
Thanks for any advice
