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don / BluetoothSerial

Cordova (PhoneGap) Plugin for Serial Communication over Bluetooth
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ELM327 (OBD2) #164

Closed tomjackman closed 8 years ago

tomjackman commented 8 years ago

Hi, I need to send commands to an ELM327 / OBD Dongle.

Example, to get the vehicle RPM, I send 010C - and i should get a result back in hex.

I am having difficulty reading the documentation provided and I have spent hours and hours trying to get it to work.

Can you tell me which methods i should used to send a code, and then receive the reply. I am having trouble about what write, read, subscribe etc all mean.

Also if you have any good references for explaining how Bluetooth communications work at a low level, that would be great.

Thanks for the great plugin! T.

don commented 8 years ago

@TommyJ1994 You should be able to send and receive ODB2 data. Unfortunately, I don't know the specifics about the ODB2 protocol.

Generally I'd send binary data to the ELM327 in an ArrayBuffer using bluetoothSerial.write. I'd get data back from the ELM327 in the success callback of bluetoothSerial.subscribeRawData.

n1705771 commented 6 years ago

Hi Tommy, could you let me know if you have solved this problem?