Problem to setup BMP180 (4pin)

[Iboiya]

Hi!
I have Opi PC Plus. After system setup, as described in correspound section, I have following errors:
Jun 14 12:07:20 orangepipcplus [WARNING] MainProcess-1934/Sensor-110 tempSensorBmp180.__init__() [64]: Initializing BMP180 I2C temperature device @ 0x77 Jun 14 12:07:20 orangepipcplus [INFO] MainProcess-1934/MainThread allsky._startSensorWorker() [497]: Starting Sensor-110 worker Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: Valid I2C ports: ((0, 11, 12),) Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: ValueError: No Hardware I2C on (scl,sda)=(11, 12) Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: raise ValueError( Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: File "/home/martin/indi-allsky/virtualenv/indi-allsky/lib/python3.9/site-packages/busio.py", line 170, in init Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: self.init(scl, sda, frequency) Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: File "/home/martin/indi-allsky/virtualenv/indi-allsky/lib/python3.9/site-packages/busio.py", line 36, in __init__ Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: return busio.I2C(SCL, SDA) Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: File "/home/martin/indi-allsky/virtualenv/indi-allsky/lib/python3.9/site-packages/board.py", line 444, in I2C Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: i2c = board.I2C() Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: File "/home/martin/indi-allsky/indi_allsky/devices/sensors/tempSensorBmp180.py", line 65, in __init__ Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: self.sensors[0] = a_sensor(self.config, pin_1_name=a_sensor_pin_1_name, i2c_address=a_sensor_i2c_address) Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: File "/home/martin/indi-allsky/indi_allsky/sensor.py", line 283, in init_sensors Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: self.init_sensors() # sensors before dew heater and fan Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: File "/home/martin/indi-allsky/indi_allsky/sensor.py", line 103, in saferun Jun 14 12:07:20 orangepipcplus [ERROR] MainProcess-1934/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: self.saferun()

"TEMP_SENSOR": { "A_CLASSNAME": "blinka_temp_sensor_bmp180_i2c", "A_PIN_1": "PA12", "A_USER_VAR_SLOT": 10, "A_I2C_ADDRESS": "0x77",

I can't figure out what the problem is. Help me please.

[aaronwmorris]

You may just need to enable the I2C overlay for your board. Try the following, assuming you are using armbian:

Run "sudo armbian-config", select "System (System and security settings)" then "Hardware (Toggle hardware configuration)", and mark i2c0 for installation. Select save and reboot your Orange Pi

[Iboiya]

Thank’s, I will check it.

[aaronwmorris]

@Iboiya Did enabling the I2C overlay work for you?

[Iboiya]

Yes! And another problem appeared:
orangepipcplus [ERROR] MainProcess-1940/MainThread allsky._startSensorWorker() [490]: Sensor worker exception: PermissionError: [Errno 13] Permission denied: '/dev/i2c-0'

GPIO Permissions doesn’t work, I have already check.

[aaronwmorris]

I'll work on the setup script for this issue... try the following:

sudo usermod -a -G i2c $(whoami)

And reboot.

[Iboiya]

It works now, thanks!

[aaronwmorris]

I have merged #1341 to fix the i2c group membership problem automatically.