Hi there
Cool! As a combined effort, we've only been at this a couple of months. We've made fantastic progress, but as of yet we don't have any documentation on the electric power steering pump.
I'd love to eventually use this as well. But, I have to take a slightly different approach to it as I have a manual transmission and no remote start.
As it stands now, I'm willing to give you a copy as long as it goes no further. At least, not until I figure out what I want to do with the HVAC stuff. (That, and the black box data recorder / player... but I've already shared a substantial chunk of that code.)
My primary safety is a check of the ignition switch (exiting Remote Start mode that's required before you can do anything useful with the [automatic transmission] vehicle). You're right. That's not going to work in your situation with a manual transmission.
Right now I've got too many things left to explore, but that's a nice juicy target that's going to interest more people and for any number of reasons!.
I've had some good luck using Fiverr to fill in some of the gaps when it comes to music and graphics in my own projects. And the rates tend to be dirt cheap. If you've got a yearning for a snazzy UI and you've got some money to throw into it, you might want to check it out. [just an unsolicited suggestion... no reply necessary]
#!/bin/bash
# Raspberry Pi Backlight control via
# Jeep wrangler JL canbus
LAST=77777
LASTDIM=199
# Watch the canbus for packets from the light switch
COMMAND="/usr/bin/candump -L can1,0291:0FFF"
$COMMAND | while read TIME BUS MESSAGE
do
NOW=$SECONDS
# Run just once per second to save CPU
[ "$NOW" != "$LAST" ] && {
#Pick out just the data bits that we need
DATA=${MESSAGE:4}
RUNL=${DATA:5:1}
DIML=${DATA:12:2}
# Only change the dimmer if the running lights are on
if [[ "$RUNL" == "3" || "$RUNL" == "1" ]]
then
# change hex into decimal
DIMRAW="$(printf "%d" 0x$DIML)"
# scale the 22-200 input to 0-53
DIMCALC="`bc <<< $((DIMRAW - 22))*.3`"
# drop the floating point and add 7 to meet the screen minimum
DIMLEVEL="$(($(printf %.0f $DIMCALC)+7))"
else
# full brightness if lights are off
DIMLEVEL=199
fi
# only change the screen brightness if there is a change
if [ "$DIMLEVEL" != "$LASTDIM" ]
then
echo "Dimming to $DIMLEVEL / 200"
# update the screen brightness
echo $DIMLEVEL > /sys/class/backlight/rpi_backlight/brightness
LASTDIM=$DIMLEVEL
fi
LAST=$NOW
}
donehey thanks for the reply
Regretfully, your hardware is almost certainly too old to be compatible with what we're working with. We're looking at 2018 and newer Wranglers, or the "JL" model. Before that was the "JK" model which used a completely different format (which is more likely that you'd share). Someone named BiggRanger created a spreadsheet with many of the values he found over time. There's a chance he could have found something of interest.
It's something I'm struggling with on how to be represent this on the spreadsheet without becoming overly wordy. I've at least added more of a hint to the comments on $291. What you're looking for isn't a literal number 1, but a bitwise match. (Same for the values which equal 2, and same of the values which equal 4.)
mask it with 1, so maybe just put "value & 0x1" or something to indicate on/off
