Update:
I added these lines from viewtopic.php?p=2322056&hilit=ili9488#p2320285
into my /boot/firmware/config.txt
But then I saw that for my LCD, the touch IRQ is GPIO17, so I changed penirq=17
I rebooted, and touch is working. I can move the cursor in my HDMI display![:)]( "Smile")
But I can't display anything on the 3.5" 480x320 LCD display yet.
I checked the correct parameters: cs=0,dc=24,reset=25
I fixed the incorrect parameter:dtoverlay=ili9341 should be dtoverlay=ili9486
Still no graphics.
Isn't there a reverse reset pin configuration? Is there something else needed for new kernels?
Update: I changed dtoverlay=ili9486 with dtoverlay=watterott,drm ... while leaving the other parameters the same
I got a /dev/fb1 for the first time, but still no video on the 3.5" LCD. The desktop that shows in the HDMI LCD has slow refresh, and looks like it is extended into an imaginary display.
I tried the mipi-dbi-spi driver in https://github.com/notro/panel-mipi-dbi/wiki ... I fixed the GPIO, but still no graphics... I remembered I need the initializing string bin... tomorrow
I added these lines from viewtopic.php?p=2322056&hilit=ili9488#p2320285
into my /boot/firmware/config.txt
Code:
dtparam=spi=ondtoverlay=ili9341,cs=0,dc=24,reset=25,speed=32000000,rotate=270dtoverlay=ads7846,cs=1,penirq=22,speed=1000000,keep_vref_on=1,swapxy=1,xohms=60ignore_lcd=1disable_splash=1framebuffer_width=0framebuffer_height=0# Other commented lines like vc4-kms-v3d, display_auto_detect etc.I rebooted, and touch is working. I can move the cursor in my HDMI display
But I can't display anything on the 3.5" 480x320 LCD display yet.
I checked the correct parameters: cs=0,dc=24,reset=25
I fixed the incorrect parameter:dtoverlay=ili9341 should be dtoverlay=ili9486
Still no graphics.
Isn't there a reverse reset pin configuration? Is there something else needed for new kernels?
Update: I changed dtoverlay=ili9486 with dtoverlay=watterott,drm ... while leaving the other parameters the same
I got a /dev/fb1 for the first time, but still no video on the 3.5" LCD. The desktop that shows in the HDMI LCD has slow refresh, and looks like it is extended into an imaginary display.
I tried the mipi-dbi-spi driver in https://github.com/notro/panel-mipi-dbi/wiki ... I fixed the GPIO, but still no graphics... I remembered I need the initializing string bin... tomorrow
Statistics: Posted by robertojguerra — Mon Jun 23, 2025 6:33 am