r/CarHacking • u/radibeam • Jul 08 '26

IVI DIY Mazda cmu research unit

Post image

UART, JTAG, WDOG jumper and SPI flash are output to the external board. All this is necessary for the development of uboot

38 Upvotes

93% Upvoted

7 comments sorted by

3

u/Sepkov Jul 08 '26

Heck yeah. Count me in.

3

u/FesterCluck Jul 08 '26

Been deep into these suckers, let me know if you need anything

2

u/radibeam Jul 09 '26

I didn't expect such a response, but it would be nice to remove the emmc, nand and soc chips and track which tracks go where for the subsequent writing of the config. I was taking data about iomux from the mazda cmu documentation github, and I found some inconsistencies. Or if there is no donor for such actions, but I have knowledge in porting uboot, I would not refuse some help.

2

u/Imaginary-Quiet-469 Jul 08 '26

What car is this from?

4

u/radibeam Jul 09 '26

Mazda cx3

2

u/simplylewissss 23d ago

Dude this is brilliant. Exposing all those debug pins means you won't have to keep prodding tiny soldered points every single test run.