Cannot use a INA3221 sensor and a BME280 sensor at the same time on a RAK4631 node.

[BubbaNel]

When using either a RAK4631 client or repeater, with either V1.10.0 or nightly "f5a56c5", one cannot use both sensors at the same time.

Using Android firmare v1.34.0

When the BME280 only is connected, I see the battery voltage and temp/RH/pressure on channel 1 of the telemetry page of the app.

When the INA3221 only is connected, I see the battery voltage on channel 1 of the telemetry page of the app.
Channel 2 shows volts, current, watts of ch. 1 of the 3221
Channel 3 shows volts, current, watts of ch. 2 of the 3221
Channel 4 shows volts, current, watts of ch. 3 of the 3221

When both sensors are connected, the telemetry page only shows the battery voltage and temp/RH/pressure on channel 1; as though only the BME280 was connected.

The INA3221's I2C address is 0x42. In order to select that address, address pin A0 of the device must be connected to the SDA signal of the I2C bus. I bring this up as I'm not sure if this affects anything.

[emersonsc]

You're doing better than I am, where my RAK with the BME280 module connected gives no data, yet when I flash back to Meshtastic works just fine

[4np]

I have a RAK1906 WisBlock Environmental Sensor Module (BOSCH BME680) and a RAK12034 WisBlock 9-Axis Accelerometer Module (BMX160) installed to a RAK19007 and flashed it as repeater.

I do see channel 1 with the BME680 readings (temperature, pressure, humidity), but no gas readings.

Also nothing for the RAK12034 9-Axis Accelerometer. This isn't obviously very useful for a repeater, but it may be for a companion or sensor unit. I would still expect to see its values in the Telemetry overview though.

[BubbaNel]

You're doing better than I am, where my RAK with the BME280 module connected gives no data, yet when I flash back to Meshtastic works just fine

Try the nightlies. With 1.10.0 I saw the fields temp/RH/pressure but the values didn't change. After going to the nightly, the values changed.

[Dainisss]

Any telemetry.addAltitude from BME280, BMP280, BME680 .... breaking all next sensors in all Chanenels.
At least on Android latest version. v1.34.0 and Firmware v1.10.0
If comment out this telemetry.addAltitude, all next sensors start working.
Tested on ProMicro Faketec repeater.

[Bill4965]

I believe there are some problems in the firmware. Here are the changes I made to get BME280 and INA3221 both working.

In helpers > sensors > EnvironmentSensorManager.cpp, at about line 352, comment out  telemetry.addAltitude(TELEM_CHANNEL_SELF, BME280.readAltitude(TELEM_BME280_SEALEVELPRESSURE_HPA));  It appears that sending this data confuses the telemetry, because it’s not properly configured in either the Meshcore firmware or in the Meshcore app.

In example > simple_sensor > SensorMesh.cpp, at line 99, comment out case LPP_RELATIVE_HUMIDITY: Before the change, the humidity data would comprise two bytes; after the change, it’s one byte. One byte appears to be the standard used for humidity in Cayenne LPP. I suspect the two bytes confuse the Meshcore app.

[pcmoore]

I can confirm that removing the telemetry.addAltitude(...) calls from the firmware (as of commit 922e378) does fix the telemetry update problem on my RAK4631 with a BME280 sensor.

[4np]

It's because the mobile apps didn't support altitude. As @liamcottle explained:

If the app doesn't know about a specific CayenneLPP type, it can't parse any fields after the unknown field, even if it knows how to parse the latter fields.

Support for altitude was added in App version 1.35.0:

• add support for standalone altitude in the telemetry response

There are some more relevant discussions in #1163 (which is superseded by #1206).

[4np]

@pcmoore , 8eb4ee1 should be reverted... See above.

[pcmoore]

@pcmoore , 8eb4ee1 should be reverted... See above.

Your comments have been noted, but I'll point out that it is in a personal repository and not an official MeshCore repo.

[4np]

Ah yeah sorry, my bad. I overlooked it was your personal fork, in GitHub mobile it can be a little challenging to get the same overview as in GitHub web :)