Tag: mib2

9 posts tagged with "mib2".

Searching the instrument cluster for a drawing route

An exact-image search for custom pixels in the J285 cluster closed one promising callback and found a conditional drawing-buffer route with a harder timing problem.

Getting out of the reversing camera's way

ClutchOS covered the reversing camera the first time I selected reverse with Home open. The fix is a small window manager that follows the factory camera request.

A Home screen for ClutchOS

Holding HOME on the pad now opens a Home screen instead of dropping into ES-DE. Built and tested on the Mac; the car has not seen it yet.

Choosing emulator cores by running every game on the card

Five of the head unit's emulator cores came from a microcontroller project. I replaced four of them, chosen by running every game on the card and timing the winners on the car's own Cortex-A9.

Game audio on a MIB2

Finding the route that puts SNES audio through the dashboard speakers, and the 92-second library load it exposed along the way.

Why the game library ran at 15 fps on the dashboard

I blamed the display, then the textures, and both times I was wrong. Isolating one variable at a time found eight bits of shader arithmetic.

A safe route into the factory menu, and reading a gamepad over USB

A one-word menu retarget froze the MIB2 twice before revealing the rule for a safe route. Nineteen USB runs later SMB3 accepted controller reports.

NES on the dashboard, and mirroring the screen to the P4

A native NES core reaches nominal cadence on the MIB2, and the factory screen reaches the P4 panel as live video at 54.59 fps.

Getting inside a MIB2

Three days from a locked Volkswagen head unit to a root Telnet shell and the first native frame on its display.