othermod / DPI-Topper-888

24-Bit LCD attachment for the Raspberry Pi

DPI Topper 888

Software

For 800x480 LCDs, add the following code to config.txt:

#Set GPIO pins to 24-Bit DPI Mode 7
#GPIO 0 and 1 needed for DPI Clock and Data Enable
gpio=0=a2,np
gpio=1=a2,np
#Set GPIO pins 2 and 3 to I2C Mode. These can be used for other things, if needed.
gpio=2=a0,np
gpio=3=a0,np
#Set up color pins
gpio=4=a2,np
gpio=5=a2,np
gpio=6=a2,np
gpio=7=a2,np
gpio=8=a2,np
gpio=9=a2,np
gpio=10=a2,np
gpio=11=a2,np
gpio=12=a2,np
gpio=13=a2,np
gpio=14=a2,np
gpio=15=a2,np
gpio=16=a2,np
gpio=17=a2,np
gpio=18=a2,np
gpio=19=a2,np
gpio=20=a2,np
gpio=21=a2,np
gpio=22=a2,np
gpio=23=a2,np
gpio=24=a2,np
gpio=25=a2,np
gpio=26=a2,np
gpio=27=a2,np

#Configure DPI signal
framebuffer_width=800
framebuffer_height=480
enable_dpi_lcd=1
display_default_lcd=1
dpi_group=2
dpi_mode=87
dpi_output_format=503847
dpi_timings=800 0 40 48 88 480 0 13 3 32 0 0 0 60 0 32000000 6

For 480x272 LCDs, add the following code to config.txt:

#Set GPIO pins to 24-Bit DPI Mode 7
#GPIO 0 and 1 needed for DPI Clock and Data Enable
gpio=0=a2,np
gpio=1=a2,np
#Set GPIO pins 2 and 3 to I2C Mode. These can be used for other things, if needed.
gpio=2=a0,np
gpio=3=a0,np
#Set up color pins
gpio=4=a2,np
gpio=5=a2,np
gpio=6=a2,np
gpio=7=a2,np
gpio=8=a2,np
gpio=9=a2,np
gpio=10=a2,np
gpio=11=a2,np
gpio=12=a2,np
gpio=13=a2,np
gpio=14=a2,np
gpio=15=a2,np
gpio=16=a2,np
gpio=17=a2,np
gpio=18=a2,np
gpio=19=a2,np
gpio=20=a2,np
gpio=21=a2,np
gpio=22=a2,np
gpio=23=a2,np
gpio=24=a2,np
gpio=25=a2,np
gpio=26=a2,np
gpio=27=a2,np

#Configure DPI signal
framebuffer_width=480
framebuffer_height=272
enable_dpi_lcd=1
display_default_lcd=1
dpi_group=2
dpi_mode=87
dpi_output_format=503847
dpi_timings=480 0 5 0 40 272 0 8 0 8 0 0 0 60 0 9600000 3