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Display library for EASTRISING 1280x400 TFT LCD (model ER-TFTM0784-1)
This one is different from its peers, which usually have just a RA8876.
It adds An SSD2828 controller which requires its own initialization.
This is a sloppy port to Arduino of demo code originally written by
JAVEN LIU for a C8051 microcontroller.
Product URL:
https://www.buydisplay.com/spi-1280x400-7-84-ips-tft-lcd-module-with-ra8876-capacitive-touch-panel
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The module has three main controllers on it:
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RA8876: Main display controller which does the graphics and text.
It has attached 16MB SDRAM and can do DMA to move graphics
around and stuff.
It can use any of the following communications schemes:
* SPI 4-Wire (up to ~50Mhz if wires are short)
* 8080 Parallel, 16 bit (needs a TON of IO PINS)
* 8080 Parallel, 8 bit
SSD2828: Low-level MIPI LCD driver. SPI interface. Needs to be
sent some configuration data on powerup, and it can be
ignored after that.
GT911: Capacitive touch panel controller. I2C interface + 1 Interrupt
flag output pin.
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NOTE
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I ordered mine configured for 3.3V and SPI interface. It draws around 300 mA
at this voltage, so it can't be powered directly by any Arduino. An external
power supply is necessary. OR, you can configure it for 5V and not worry about
it.
I did my development and testing on an Arduino DUE, hence the 3.3V, but the
code should work on other Arduinos or Teensy with minimal modification.
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CONNECTING AN ARDUINO DUE IN SPI MODE
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SSD2828 Panel Driver
/CS 24
RESET 25
SDI 26
SCLK 27
GT911 Touch Screen
SDA 28
SCL 29
INT 30
RESET 31
RA8876 LCD Controller
RESET 34
/CS 10
SDI 109 (Arduino DUE ISP port MOSI pin)
SDO 108 (Arduino DUE ISP port, MISO pin)
SCLK 110 (Arduino DUE ISP port, SCK pin)
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CONNECTING AN ARDUINO DUE IN 16-BIT 8080 PARALLEL MODE
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SSD2828 Panel Driver
/CS 24
RESET 25
SDI 26
SCLK 27
GT911 Touch Screen
SDA 28
SCL 29
INT 30
RESET 31
RA8876 LCD Controller
RESET 34
RS 33
/CS 34
WR 35
RD 36
D0 38
D1 39
D2 40
D3 41
D4 42
D5 43
D6 44
D7 45
D8 46
D9 47
D10 48
D11 49
D12 50
D13 51
D14 52
D15 53
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EXAMPLES
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demo.ino - Demonstrates the RA8876 graphics.
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HELP WANTED
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There is much room for improvement and optimization here, so please
lend a hand.
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caiannello/ER-TFTM0784-1
Arduino library for the 1280x400 TFT LCD + Touchscreen from BuyDisplay.com
C++MIT