Posts made by DRAgon734235

@ian57

@ian57
it is possible to rotate the DPI or HDMI LCD with 90 or 270 at recalbox 4B？

@ian57

I have tried dpi18 and dpi24

they are same result

@ian57

yes ， I use that dtbo file from waveshare

I have tried that code ， same

The LCD can display OK ， but recalbox os can not enter Emulator

I think this is recalbox bug at DPI LCD，

@ian57
OK ， I will test when recalbox 7.2 beta come .

it is possible to rotate the DPI or HDMI LCD with 90 or 270 at recalbox 4B？

@ian57

thank you

where can I download recalbox 7.2 beta ？

I will try that

@ian57
I have tried to connect or not connect HDMI LCD , the HDMI LCD not display

they do not have any effect

@ian57

Your recalbox is 4.6 ？

@ian57
I use recalbox-rpi4 7.1

this is my code ：

dtoverlay=vc4-fkms-v3d
max_framebuffers=1
overscan_scale=1

overscan_left=0
overscan_right=0
overscan_top=0
overscan_bottom=0

hdmi_force_hotplug=1

framebuffer_width=480
framebuffer_height=800

gpio=0-9=a2
gpio=12-17=a2
gpio=20-25=a2
dtoverlay=dpi18
enable_dpi_lcd=1
display_default_lcd=1
#extra_transpose_buffer=2
dpi_group=2
dpi_mode=87
dpi_output_format=0x7F216
hdmi_timings=480 0 26 16 10 640 0 25 10 15 0 0 0 60 0 32000000 1
dtoverlay=waveshare-28dpi-3b-4b

The recalbox still stay at that recalbox logo picture always

@ian57

I do not rotate the LCD with 90 or 270, the LCD display as the default direction like this image

and the recalbox stay at this picture always

@ian57
https://www.aliexpress.com/item/1005001659074233.html?spm=a2g0o.productlist.0.0.9cc286b4PDloaM&algo_pvid=05efcf4a-b64c-4624-b3b0-7450fe193177&algo_expid=05efcf4a-b64c-4624-b3b0-7450fe193177-13&btsid=0b86d81616125235002752171e1e1f&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

Waveshare 2.8inch dpi LCD

@ian57
Do you have any suggestion ？

my 4b stay at this

Do you have any suggestion ？ （Even in “rotate=0” ）

@ian57 @Zing

have news ？

@ian57 said in recalbox not work well with DPI LCD on 4B:

geekworm

OK ，

think you

@ian57 said in recalbox not work well with DPI LCD on 4B:

#dtoverlay=vc4-kms-v3d

After comment
#dtoverlay=vc4-kms-v3d

Still stay at recalbox logo image

@Zing
DPI LCD same configuration 3B work well

But 4B just stay at this recalbox logo image

@Zing

hello， thank for your replay， I think that three wenlink just work for 3B ， Not 4B

Now I am the 4B DPI problem， at 3B ， the DPI LCD display well 。

I have tried this weblink
https://recalbox.gitbook.io/documentation/tutorials/video/tft/setting-up-your-small-tft-screen-on-the-spi-bus
That just work for 3B ， not work for 4B ，

also tryed this
https://recalbox.gitbook.io/documentation/tutorials/video/tft/second-minitft-for-scrapes-and-videos-ogst-case-raspeberry-pi-1-2-3-spi-dpi-small-tft-screens
add the code

system.secondminitft.enabled=1

this code not have any effect

==================================================
This is my problem， the DPI lcd work well at 3B ， not work well at 4B
your weblink for reference just for 3B not solve 4B problem

@Zing

if I use HDMI LCD . the same image with HDMI configuration will work well

@Zing

dtoverlay=dpi18
enable_dpi_lcd=1
display_default_lcd=1
#dpi_group=2
dpi_mode=87
dpi_output_format=0x7f216
hdmi_timings=480 0 10 16 59 800 0 15 113 15 0 0 0 60 0 52000000 6

this is my configuration at config.txt

stay at recalbox logo not caused by “hdmi_drive=2”