thinkoco / mi-lcd

A multiple interface (intel 8080, 3-wire SPI, DPI RGB ) 5 inch TFT LCD capacitive touch screen which is compatible with teraisc DE-series boards

Multi-Interface LCD

MI-LCD is a multiple interface: DBI Type B Parallel Interface (intel 8080), DBI Type C Serial Interface (3-wire SPI) and DPI Interface ( RGB) 5 inch TFT LCD capacitive touch screen module which is compatible with teraisc DE-series boards

Features

• 5 inch TFT LCD with 480(RGB)*854(line)
• capacitive touch screen with 5 points touch
• ili9806g and ft5x16 chips
• similar to terasic MTL2 and LT24 (two in one)
• support DBI Tpye B display interface (Intel 8080 8-bits,9-bits,16-bits,18-bits,24-bits bus)
• support DBI Tpye C display interface (3-wire SPI)
• support DPI display interface (RGB), 16/18/24-bit Pixel Format with SPI initialization
• support touch i2c inferface
• teraisc DE-series boards 2x20 GPIO Pins
• Arduino Pins with Intel 8080 8-bits bus and touch i2c

Compatibility Table

Boards & Pins	SPI 3wire	i80-8b	i80-9b	i80-16b	i80-18b	i80-24b	RGB-16b	RGB-18b	RGB-24b
DE10-Nano GPIO_0/1	√	√	√	√	√	√	√	√	√
DE1-SoC GPIO_0/1	√	√	√	√	√	√	√	√	√
DE0-Nano-SoC GPIO_0/1	√	√	√	√	√	√	√	√	√
DE10-Standard GPIO	√	√	√	√	√	√	√	√	√
DE0-Nano GPIO	√	√	√	√	√	√	√	√	√
DE0-CV GPIO	?	?	?	?	?	?	?	?	?
DE0 GPIO_0/1	√	?	?	?	?	?	?	?	?
DE1 GPIO_0/1	√	?	?	?	?	?	?	?	?
DE2 GPIO_0/1	√	√	√	√	√	√	√	√	√
DE2-70 GPIO_0/1	√	?	?	?	?	?	?	?	?
DE10-Lite GPIO	?	?	?	?	?	?	?	?	?
DE2-115 GPIO	√	√	√	√	√	√	√	√	√
DE2i-150 GPIO	?	?	?	?	?	?	?	?	?
C5G GPIO	√	√	√	√	√	√	√	√	√
ADC-SoC GPIO	?	?	?	?	?	?	?	?	?
OpenVINO GPIO	?	?	?	?	?	?	?	?	?
C10EFP-LP GPIO	?	?	?	?	?	?	?	?	?
Terasic TR4 GPIO	?	?	?	?	?	?	?	?	?
Terasic DE3 GPIO	?	?	?	?	?	?	?	?	?
Terasic DE4 GPIO	?	?	?	?	?	?	?	?	?
DE10-Nano Arduino	√	√	×	×	×	×	×	×	×
DE0-Nano-SoC Arduino	√	√	×	×	×	×	×	×	×
DE10-Lite Arduino	√	√	×	×	×	×	×	×	×
ADC-SoC Arduino	?	?	×	×	×	×	×	×	×
OpenVINO Arduino	?	?	×	×	×	×	×	×	×
C10EFP-LP Arduino	?	?	×	×	×	×	×	×	×

√: Pin compatible and had been tested

√ : Pin compatible, not tested

× : Pin not compatible

? : not sure

PCB layout

Plans

• DE1-SoC Linux framebuffer and touch Quartus projecct (854 dots * 480 line)
• Linux framebuffer (RGB DPI Interface)and touch driver for MI-LCD
• Verilog SPI initialization code
• DE10-Nano Nios II with Intel 8080 8-bits bus
• DE10-Nano Nios II with SPI
• DE1-SoC Nios II with DPI interface (RGB)
• Linux tinydrm ili9806 driver for MI-LCD with Intel 8080 24-bits bus (DBI Type B Parallel Interface)

How to use

1. How to use

MTL2 and LT24

• MTL2
• LT24

mi-lcd's Issues

MIL (mi-lcd) with intel 8080 24-bits bus is low fps in DRM_FORMAT_XRGB8888 mode

now, the linux tinydrm ili9806 driver for MIL support DRM_FORMAT_XRGB8888 and RBG 24-bits bus only. low fps.

./modetest -M "fb_ili9806" -s 28:854x480@XR24 -v
setting mode 854x480-0Hz@XR24 on connectors 28, crtc 30
freq: 6.35Hz
freq: 6.34Hz
freq: 6.34Hz