Ingineer
Well-known member
For some time, I've been tearing into the Clarion-built Navigation/MFD (Multi-Function Display) in the Leaf. I thought I would share some information for those that might be interesting in working on it and/or maybe collaborating on upgrades/mods.
Here's what I know about the unit:
It's powered by a 32bit Renesas SH-NaviJ2 (SH77722) CPU that is built from the ground up to be a Navigation Unit CPU:
It is equipped with a built-in 3D graphics system (854×480 resolution), 8 megs of flash memory, 256k DDR2 SDRAM, two SD card slots (1 in use for map data), USB 2.0, SPI, dual CAN, etc.
My first (and so far only) Hack is to add a small microcontroller circuit to "fake" the OK button press as soon as the unit powers up:
[youtube]http://www.youtube.com/watch?v=MU5co4PnCYM[/youtube]
Obviously this was accomplished without altering any code, but a more elegant way would be to patch the code to eliminate this (any several other) annoyances.
-Phil
Here's what I know about the unit:
It's powered by a 32bit Renesas SH-NaviJ2 (SH77722) CPU that is built from the ground up to be a Navigation Unit CPU:
It is equipped with a built-in 3D graphics system (854×480 resolution), 8 megs of flash memory, 256k DDR2 SDRAM, two SD card slots (1 in use for map data), USB 2.0, SPI, dual CAN, etc.
My first (and so far only) Hack is to add a small microcontroller circuit to "fake" the OK button press as soon as the unit powers up:
[youtube]http://www.youtube.com/watch?v=MU5co4PnCYM[/youtube]
Obviously this was accomplished without altering any code, but a more elegant way would be to patch the code to eliminate this (any several other) annoyances.
-Phil