03-08-2024, 09:30 AM
Hi,
Thanks for your reply, cmdline.text below:
and the config.txt:
Things I have tried so far:
2x max3232 converters
2x USB-Serial cables (after selecting the relevant identifiers of course)
Bluetooth is completely disabled on my pi 3b
systemctl hciuart is disabled
All of the above gives the same result, very sporadic response
minicom (in hex mode, 9600 baud) receives completely random data when buttons are pressed
When booted, the system will respond after about 5 or six movements on the mmi selector (big button turning left or right)
if i press the mmi button in, after 10-ish tries, the button may work but seems to latch itself so that it is sending the "Enter" command over and over. all other buttons (back, return etc) may work after 10 presses or so
This is driving me insane as it's the last part of the puzzle and i'm keen to refit my glovebox:-)
PLEASE HELP ME!
Regards
Bryan
This is driving me insane
Thanks for your reply, cmdline.text below:
dwc_otg.lpm_enable=0 console=tty3 consoleblank=0 loglevel=0 root=PARTUUID=38df017e-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait quiet splash logo.nologo vt.global_cursor_default=0 plymouth.ignore-serial-consoles
and the config.txt:
# For more options and information see
# http://rpf.io/configtxt
# Some settings may impact device functionality. See link above for details
# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1
# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
#disable_overscan=1
# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
overscan_left=9
overscan_right=-16
overscan_top=-14
overscan_bottom=-4
# uncomment to force a console size. By default it will be display's size minus
# overscan.
framebuffer_width=800
framebuffer_height=480
# uncomment if hdmi display is not detected and composite is being output
#hdmi_force_hotplug=1
# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=1
# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2
# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4
# uncomment for composite PAL
sdtv_mode=2
sdtv_aspect=3
#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800
# Uncomment some or all of these to enable the optional hardware interfaces
dtparam=i2c_arm=on
#dtparam=i2s=on
#dtparam=spi=on
# Uncomment this to enable the lirc-rpi module
#dtoverlay=lirc-rpi
# Additional overlays and parameters are documented /boot/overlays/README
# Enable audio (loads snd_bcm2835)
dtparam=audio=off
dtoverlay=pi3-disable-bt
disable_splash=1
dtoverlay=vc4-fkms-v3d
dtoverlay=i2c-rtc,ds1307
enable_uart=1
core_freq=250
[pi3]
gpu_mem=256
max_framebuffers=1
[pi3+]
gpu_mem=256
max_framebuffers=1
[pi4]
max_framebuffers=2
Things I have tried so far:
2x max3232 converters
2x USB-Serial cables (after selecting the relevant identifiers of course)
Bluetooth is completely disabled on my pi 3b
systemctl hciuart is disabled
All of the above gives the same result, very sporadic response
minicom (in hex mode, 9600 baud) receives completely random data when buttons are pressed
When booted, the system will respond after about 5 or six movements on the mmi selector (big button turning left or right)
if i press the mmi button in, after 10-ish tries, the button may work but seems to latch itself so that it is sending the "Enter" command over and over. all other buttons (back, return etc) may work after 10 presses or so
This is driving me insane as it's the last part of the puzzle and i'm keen to refit my glovebox:-)
PLEASE HELP ME!
Regards
Bryan
This is driving me insane