MeatPi CAN Adapter

realdashdev · May 2, 2023, 6:13am

On Android, do you see the Bluetooth device in Android Bluetooth settings?

What I mean is to give a clarification on if Bluetooth device does not appear on RealDash connection settings, or it does not appear on Android Bluetooth settings.

Please note, that in some cases on Android you need to first pair the Bluetooth device before it appears on the selectable Bluetooth device in RealDash connection settings.

franzzend1 · May 13, 2023, 4:04am

Android does not see the adapter , tried with VEEPEAK that is working fine !!
But that connector is not supported in realdash … ???

realdashdev · May 15, 2023, 10:20am

Basically any ELM327 compatible adapter should work as OBD2 adapter with RealDash. We just have absolutely no chance to test/endorse them all.

I think you should contact the manufacturer of the MeatPi adapter. If I remember correctly, you have to go to its web interface to enable and configure the Bluetooth functionality.

Meatpi · May 15, 2023, 12:49pm

@franzzend1 Please post a screenshot of your configuration webpage.

After you enable bluetooth you should disconnect from the device AP otherwise you won’t see the device in the bluetooth scan

mmain · July 17, 2023, 4:37pm

Hi MeatPi,

I recently purchased the WiCAN adaptor to displace a cheap ELM27 adaptor, but I am at a bit of a loss how to obtain / create a CAN file to decode my Toyota FJ Cruiser 2012 data. The only information I was able to gain was on a forum as shown below (but not sure what next steps I need to take). Any steer most welcome.

2011 model uses protocol
ISO15765-4CAN11/500

it is FJ Cruiser & Prado specific protocol but CAN Version 4 and up will get you everything
except airbag status, TPMS and security/key fobs

Meatpi · July 19, 2023, 3:40pm

@mmain The simplest way is to find a CAN DBC file for your car. The DBC file contains the CAN IDs and what you need to create your own xml file for RealDash. Checkout the opendbc link below it might be what you’re looking for.

github.com

commaai/opendbc/blob/master/toyota_nodsu_pt_generated.dbc

CM_ "AUTOGENERATED FILE, DO NOT EDIT";


CM_ "Imported file _comma.dbc starts here";
BO_ 359 STEERING_IPAS_COMMA: 8 IPAS
 SG_ STATE : 7|4@0+ (1,0) [0|15] "" XXX
 SG_ ANGLE : 3|12@0- (1.5,0) [-510|510] "deg" XXX
 SG_ SET_ME_X10 : 23|8@0+ (1,0) [0|255] "" XXX
 SG_ SET_ME_X00 : 31|8@0+ (1,0) [0|255] "" XXX
 SG_ DIRECTION_CMD : 38|2@0+ (1,0) [0|3] "" XXX
 SG_ SET_ME_X40 : 47|8@0+ (1,0) [0|255] "" XXX
 SG_ SET_ME_X00_1 : 55|8@0+ (1,0) [0|255] "" XXX
 SG_ CHECKSUM : 63|8@0+ (1,0) [0|255] "" XXX

CM_ "BO_ STEERING_IPAS_COMMA: Copy of msg 614 so we can do angle control while the Park Assist ECU is connected (Panda spoofs 614 with 359 on connector J70). Note that addresses 0x266 and 0x167 are checksum-invariant";

BO_ 512 GAS_COMMAND: 6 EON
 SG_ GAS_COMMAND : 7|16@0+ (0.159375,-75.555) [0|1] "" INTERCEPTOR
 SG_ GAS_COMMAND2 : 23|16@0+ (0.159375,-151.111) [0|1] "" INTERCEPTOR
 SG_ ENABLE : 39|1@0+ (1,0) [0|1] "" INTERCEPTOR

This file has been truncated. show original

mmain · July 21, 2023, 6:27am

@Meatpi thank you for the direction, following which I have:

Located generic OBD PIDs from CSS Electronics
Merged Toyota Proprietary PIDs
Converted the DBC to XML using python conversion tool from @cloudy
The device is communicating reliably in AP+Station mode WiFi achieving 800 frames / sec on RealDash CAN Monitor, but nothing appears in RealDash suggesting some deficiency in the XML file

Any advice on the XML most welcome

realdashdev · August 8, 2023, 8:57am

Please share your DBC and generated XML

mmain · August 8, 2023, 9:17am

@realdashdev thanks for reply, after sending I understood I had been trying to mix OBD and CANBUS DBC files which clearly was not going to work and subsequently refocused my effort on getting OBD working, which with the exception of an error in my fuel injection pulse width formula, everything is now working really well. My next challenge is migrating some of the parameters to CANBUS via the MeatPi adapter. RealDash is an excellent product with great flexibility!!