Menu
I am trying to send command from ANDROID to ELM327/OBD2 protocol (WIFI Diagnostic troubles). I downloaded an api or library from: https://github.com/pires/android-obd-reader The problem that this api not have any documentation. We need help about the command and protocol to exchange data. Thanks!
547
OBD-II Protocols An OBD2 compliant vehicle can use any of the five communication protocols: SAE J1850 PWM, SAE J1850 VPW, ISO9141-2, ISO14230-4 (KWP2000), and since 2003 also ISO 15765-4/SAE J2480. ELM-USB and OBDTester support all of them.
J2411 – Describes the GMLAN (Single-Wire CAN) protocol, used in newer GM vehicles. Often accessible on the OBD connector as PIN 1 on newer GM vehicles.
What do you really want to know?
With the ELM327 the protocol is fairly easy. You just send a PID in ASCII, and you will receive an answer in ASCII. It's based on polling. So you will receive 1 answer for 1 request. As long as you don't send, you don't receive.
For converting and what commands to send, check the links I provided.
Some more links:
AT Commands
OBD-II Commands
159
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
