Display UI on Waveshare 3.5 inch TFT

[eric00886]

And why not using the latest 6.7.1 Moode?
try first to install your hdmi screen without installing the driver.
My config.txt looks like that, I have a Kuman 3.5 hdmi and another small one 1.3" screen

disable_splash=1
disable_overscan=1
hdmi_drive=2
hdmi_blanking=1
hdmi_force_edid_audio=1
hdmi_force_hotplug=1
hdmi_group=2
dtparam=i2c_arm=on
dtparam=i2s=on
dtparam=audio=off
dtoverlay=hifiberry-dacplus
#dtoverlay=disable-wifi
#dtoverlay=disable-bt
dtparam=i2c_arm_baudrate=400000
hdmi_group=1
hdmi_mode=1
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
display_hdmi_rotate=2
avoid_warnings=1

it will not be touchscreen at first.

Thanks for your reply. I study your config.txt first.

I use Moode Audio 6.7.1 and 7 hdmi waveshare touchscreen work well. Local UI is very good design.
Now, I got problem in 3.5 SPI touchscreen.  This is a process full of fun and tears and the only problem is I am still in the process.