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ParadoxAlarmInterface / pai

Paradox Magellan, Spectra and EVO, with MQTT, Signal, Pushbullet, Pushover and others
https://gitter.im/paradox-alarm-interface
Eclipse Public License 2.0
358 stars 94 forks source link

Need to help about decode/encode data #488

Closed hpbchung closed 3 months ago

hpbchung commented 3 months ago

Alarm system

EVO192

Environment

Windows

Question

Hi guys, I have a project using Arduino to read the alarm status for each zone of the EVO192 model via serial communication. Could you provide me with an example file that shows how to encode the byte data for sending and how to decode the byte data upon receipt?

yozik04 commented 3 months ago

It is not that easy. You need to connect and authenticate first (~5 requests). Then read RAM in certain address range block by block. You will get a binary back that you will need to decode each bit/byte you receive.

hpbchung commented 3 months ago

Yes, I know, and I have dumped the data like in the attached file, but I don't understand how to send the data and parse the received data because the bytes sent each time are not consistent enough to identify a pattern. If possible, could you explain or help me by writing a C file for some examples of sending and receiving data like this? COM13.pdf

yozik04 commented 3 months ago

Sorry, I will not write any code for you :), but you can lookup what Python code does in my repo and replicate that to your C code. Sometimes unit tests show the process better. Certainly look there as well.

hpbchung commented 3 months ago

Thanks for your help and have a nice day!