I would very much like to see support for direct serial communications to the Midea AC through a serial bridge which does not require any connection to the Internet from the AC ever, @reneklootwijk supports this in their NodeJS library: https://github.com/reneklootwijk/node-mideahvac and with this method no id/key/token is required. You only need to replace or re-flash the wifi dongle to be a serial bridge device instead and communicate directly with the AC unit with a slightly modified packet.
It looks like you essentially can take the received data with no decoding or deciphering and when sending can skip the 0x5A5A header, MD5, key, and encoding when sending.
I would very much like to see support for direct serial communications to the Midea AC through a serial bridge which does not require any connection to the Internet from the AC ever, @reneklootwijk supports this in their NodeJS library: https://github.com/reneklootwijk/node-mideahvac and with this method no id/key/token is required. You only need to replace or re-flash the wifi dongle to be a serial bridge device instead and communicate directly with the AC unit with a slightly modified packet.
See the difference between https://github.com/reneklootwijk/node-mideahvac/blob/master/lib/serialbridge.js and https://github.com/reneklootwijk/node-mideahvac/blob/master/lib/sk103.js
It looks like you essentially can take the received data with no decoding or deciphering and when sending can skip the 0x5A5A header, MD5, key, and encoding when sending.