IthoPy
Python3 library to build and parse I2C bus messages for Itho devices. Meant for inclusion in your own Python code, not for direct consumption through the CLI.
NOTE: This library can’t communicate directly with your device. For that you’ll need to use something like itho-esp to send/receive these messages to a ESP32 using MQTT.
Supported devices
- Itho HRU ECO BAL LE (2017 model)
TODO
- Implement message builder
- Tests for message builder
- Implement message parser
- Tests for message parser
- Support for more commands and devices:
- Support for device type and status queries
- Allow user to select device model
- Load parameters from csv file
- Load data labels from csv file
Example usage
NOTE: The most up to date examples can be found in the test suite.
from ithopy.hru_device import HruDevice
hru = HruDevice(HruDevice.ESP32_ADDR, HruDevice.HRU_ADDR)
msg = hru.set_supply_fan_rpm(0)
print(str(msg))
# => "82 80 A4 10 06 13 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 2D 00 04"
print(msg.build().byteArr)
# => ['82', '80', 'A4', '10', '06', '13', '00', '00', '00', '00', '00', '00', '00', '00', '00', '00', '00', '00', '00', '00', '00', '00', '00', '2D', '00', '04']
print(msg.build().intArr)
# => [130, 128, 164, 16, 6, 19, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 45, 0, 4]
I2C packet format
[Byte index] description
[0] destination address
[1] reply address
[2..3] message class
[4] message type
[5] payload length
[n] payload
[n+1] checksum
