Waveshare 4" hdmi display working with Retropie!
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Here's the solution:
Before you start the LCD screen install on Retropie, you will need:
1.Retropie Image on your SD Card
2.LCD-show-161112.tar.gz file (http://www.waveshare.com/w/upload/4/4b/LCD-show-161112.tar.gz)
3.PuTTy
4.FileZilla client
5.Some Knowledge of using FileZilla client and puttyGo to retropie settings, then raspi config and turn SSH ON!
Then go to FileZilla and transfer LCD-show-161112.tar.gzr to pi's main folder.
Now go to putty and type, { sudo nano /boot/config.txt }.
Now remove what's in there and paste the following: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=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16uncomment to force a console size. By default it will be display's size minus
overscan.
#framebuffer_width=1280
#framebuffer_height=720uncomment if hdmi display is not detected and composite is being outputted
hdmi_force_hotplug=1
uncomment to force a specific HDMI mode (here we are forcing 800x480!)
hdmi_group=2
hdmi_mode=87
hdmi_cvt=480 800 60 6 0 0 0
hdmi_drive=2
max_usb_current=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_rotate=3uncomment 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
#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800
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