Freematics Forum

Hi, I recieved my uart model a adapter in the mail and when trying to get it to connect to my car I realized that the obd ii adapter doesn't support the GM or Ford protocols. Now I'm quite sad, as I didn't know about these various protocols before purchasing. Is there a reason why no support for this protocol is included? Could it possibly be a software addition? Thanks for the help

J1850 is not supported and can't be added by software update.

Hi Stanley,
Can you tell us which other protocols (vehicle manufacturers) are not supported?
Thanks,
Bill

Only the listed protocols on the product page are supported. All others are not supported.

Still problem with ford and Gm protocols....not work! PWR/VPW....

Our OBD-II adapter does not suppot J1850.

This is very unfortunate!

I have a 1998 Ford Mustang which supports only J1850 PWM on its OBDII port.
When i connect the OBD-II Telematics Advanced Kit (Arduino MEGA) - NOTHING. no output at all.

My understanding is that Ford used only J1850 not CAN in the early cars
Stanley: You say it only supports whats on the product page. That page says it supports OBDII and J1850 is a perfectly fine standard for OBDII. (https://en.wikipedia.org/wiki/On-board_ ... _protocols)


PLEASE to avoid other buyers to be frustrated PLEASE add a huge disclaimer that you DO NOT support the J1850 version of OBDII

NOTE:
Yes I'm a software guy. i downloaded the latest firmware from https://github.com/stanleyhuangyc/Ardui ... galoggerHD
Yes i even compiled and debugged it. At the moment you only seem to support (File: https://github.com/stanleyhuangyc/Ardui ... /OBD.h#L79)
typedef enum {
PROTO_AUTO = 0,
PROTO_ISO_9141_2 = 3,
PROTO_KWP2000_5KBPS = 4,
PROTO_KWP2000_FAST = 5,
PROTO_CAN_11B_500K = 6,
PROTO_CAN_29B_500K = 7,
PROTO_CAN_29B_250K = 8,
PROTO_CAN_11B_250K = 9,
} OBD_PROTOCOLS;

I looked up the ELM237 datasheet and added a constant for PROTO_J1850_PWM = 1 and set the protocol manually in config.h

Still no luck.

I love the idea of the product - but i'm giving up at that point;

Stanley - could you confirm this is a HARDWARE limitation? Are you using the ELM Chipset? Or is there hope for a determined hacker to make this work?? (I'm willing to invest another day into this if there is hope)