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Code in this repo already has retry logic on connect for 2 different baud rates, I suggest also trying different connect sequences.
There are 2 possible things after successful connection, if rest of protocol is different:
Go forward with communication and all works
Second option easier to implement for time being, "Throw exception" saying you should use different library for this heat pump.
The text was updated successfully, but these errors were encountered:
I spent some time banging my head against the wall, before I figured this out, almost gave up... Tried with pullups, without, rechecked wires, changed boards.... :D
Turns out, not all CN105 are same as I though... They can have different connect packets...
This repo uses
0xfc, 0x5a, 0x01, 0x30, 0x02, 0xca, 0x01, 0xa8
, but apparently my Ecodan ERST20C heat pump totally ignores this.Luckily I tried also https://github.com/m000c400/Mitsubishi-CN105-Protocol-Decode which uses
0xfc, 0x5a, 0x02, 0x7a, 0x02, 0xca, 0x01, 0x5d
and it worked... In code it actually has 5 different Init sequences defined https://github.com/m000c400/Mitsubishi-CN105-Protocol-Decode/blob/5d11f087dab622532904c4976a84d3dd5978772c/Ecodan.cpp#L27-L31 but only this one used...Code in this repo already has retry logic on connect for 2 different baud rates, I suggest also trying different connect sequences.
There are 2 possible things after successful connection, if rest of protocol is different:
The text was updated successfully, but these errors were encountered: