by Zim_256 » Tue Jan 13, 2009 11:09 pm
The problem is that those air conditioner remotes that have a LCD display to inform the user of the current mode of operation, sends all the commands to the air conditioner receiver in a single transmission, this is, the mode, temperature, timer, and all other functions that the remote can modify.
You can't emulate the A/C remote the same way that a DVD remote for example because the DVD remote sends single commands on each keypress, the A/C remote sends the status of all commands. When the correct commands are received and interpreted by the controller inside the air conditioner, it beeps.
The communication code when sent from the remote is similar to this:
COMMAND_START;MODE;TEMP;FAN;TIME;TIMER_ON;TIMER_OFF;ION;SWING;SLEEP;COMMAND_END
The entire code is transmitted when a single function changes in the remote.