elecrow-7-9 on RB4 not working

Koodie

I tried alot to get the 8.8 Inch version working (Model DIS79340P) on the raspberry, if i boot into the OS the screen works.

But if i use it with ultibo, a baremetal freepascal distrib it fails. I tried to set alot of values in the config.txt:

Nothing seems to work, does anybody have an idea?

#hdmi_group=2

#hdmi_mode=1

#hdmi_mode=87

#hdmi_cvt 1920 480 60 6 0 0 0

#hdmi_group:0=2

#hdmi_mode:0=1

#hdmi_mode:0=87

#hdmi_cvt 1920 480 60 6 0 0 0

#dtparam=spi=on

#dtparam=i2c_arm=on

#dtoverlay=ads7846,cs=1,penirq=25,penirq_pull=2,speed=50000,keep_vref_on=0,swapxy=0,pmax=255,xohms=150,xmin=200,xmax=3900,ymin=200,ymax=3900

#framebuffer_width=480

#framebuffer_height=1920

#hdmi_cvt:1=1920 480 60

#hdmi_group:1=2

#hdmi_force_mode:1=1

#hdmi_mode:1=87

#hdmi_force_hotplug:1=1

#hdmi_drive:1=2

#hdmi_timings:1=1920 0 48 193 240 480 1 3 2 15 0 0 0 60 0 71750000 0

#hdmi_cvt:0=1920 480 60

#hdmi_group:0=2

#hdmi_force_mode:0=1

#hdmi_mode:0=87

#hdmi_force_hotplug:0=1

#hdmi_drive:0=2

#hdmi_timings:0=1920 0 48 193 240 480 1 3 2 15 0 0 0 60 0 71750000 0

#hdmi_cvt=1920 480 60

#hdmi_group=2

#hdmi_force_mode=1

#hdmi_mode=87

#hdmi_force_hotplug=1

#hdmi_drive=2

#hdmi_timings=1920 0 48 193 240 480 1 3 2 15 0 0 0 60 0 71750000 0

#disable_overscan=1

Koodie

I can see a little bit more with these settings:

max_framebuffers=2

hdmi_safe:=0

hdmi_cvt:0=480 1920 60

hdmi_group:0=2

hdmi_mode:0=87

display_rotate=1

But it is not good yet.

Koodie

That made it work for me:

hdmi_enable_4kp60=1

max_framebuffers=2

hdmi_safe:=0

hdmi_cvt=480 1920 60 6

hdmi_group:0=2

hdmi_mode:0=87

display_rotate:0=1

hdmi_force_hotplug:0=1