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:
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.
One hack I would LOVE to see is a bluetooth hack that makes the LEAF activate directly into handsfree mode when you hit the phone (or speech) button on the steering wheel. That is to say, bypass any built in functionality and connect directly to the phone. This would make it MUCH easier to use Siri on the iPhone, or any other phone with better voice control than what's built in. What do you think the odds of being able to do that are?
Can I come be your understudy?
Ingineer wrote: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:
Very nice. And it looks like it genuinely "presses OK" not just bypassing it by simulating one of the physical buttons...
Now, the obligatory questions:
When can I get it?
How much will it cost?
What are it's dimensions?
Can you post a "how-to"?
Will it be "open"?
There, they've been asked - so nobody else ask, OK? Phil will reveal more when he's ready. Hounding him will do no good!
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adric22 wrote:Why does it show two different monitors? Front and back? I'm confused.
Just because the Renesas SH-NaviJ2 has the capability, that doesn't mean Nissan is using it.
No secondary video input Phil?
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Since this is (presumably) a WinCE device, it would be nice if we could figure out how to break out of the Nissan application to the WinCE desktop. What we need are some Nissan service manuals. I know of at least one LEAF technician on the forums.
On a number of older Clarion WinCE sat navs, the password to access map and software update menu items is 200802, though I doubt this will help. I don't have my LEAF yet, so I have no way to dig into the menus and see if there's an option to enter a password. I'm sure Nissan isn't using stock Clarion software.
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