jourdant
commented
7 months ago That's awesome you have the PI-485! According to this diagram, the LGAP pins should be 4 (BUS A/+) and 5 (BUS B/-).
You also need to check the DIP switches are set correctly. The final switch refers to whether the PI-485 is outputting LGAP protocol or not.
With the final switch on the right set to the up position, it will enable LGAP. You'll also need to set the other switches according to the unit you are interfacing with.
Assuming that's all in place already, which ESP32 board are you using to interface with the PI-485 board? I've started implementing the LGAP protocol as an esphome component already and it's on my feature/esphome2 branch right now. If you're wanting to add it to an esphome config, you'll need to add the following lines:
external_components:
- source:
type: git
url: https://github.com/jourdant/esphome-lgap
ref: feature/esphome2
components: [ "lgap"]
refresh: 0sec
uart:
id: lgap_uart1
tx_pin: GPIO06 #update your pin
rx_pin: GPIO07 #update your pin
baud_rate: 4800
debug:
direction: BOTH
lgap:
- id: lgap1
uart_id: lgap_uart1
flow_control_pin: GPIO05
zone_check_wait_time: 5000ms
send_wait_time: 4000ms
receive_wait_time: 4000ms
debug: True
debug_wait_time: 2000ms
climate:
- platform: lgap
id: lgap_zone_1
name: 'Zone 1 - Ground Floor'
lgap_id: lgap1
zone: 0
Hi I have a Dual Inverter Air Conditioner - M38AKH and PI-485 extension board and I am trying to control the aircon remotely using this board.
I have a question as I am not getting any response. How exactly do I send the request? What is the format? If you could please send an example of a valid request and how exactly you send it, that would be appreciated.
I am currently sending this request over serial [0,0,0,0,2,2,5,92] and it is not working. Any help will be greatly appreciated.