Arduino Mega GD2 and FT800 320x240 initializing issue

[kanlok]

hi,

Board: Arduino Mega 2560

I have problem initializing ft800 320x240 display. I have changed the CS pin to 53 in Wiring.h & set the Board to BOARD_FTDI_80x in GD2.h 

however, FT800 screen just hangs with white background. i have debugged and traced that everything just hangs when code reaches/goes into to GDTR.begin0(cs);

I am just trying Hello World example of GD2 at the moment.

I am not sure where MISO, MOSI and SCK pins are defined, so I have defined them in GD2.h

Any clue what I am missing or what more modifications I need to make with above setup?    

Thanks
Lokesh

#include <EEPROM.h>
#include <SPI.h>
#include <GD2.h>

void setup()
{
 
Serial.begin(9600); // JCB


GD.begin();
GD.wr32(REG_HCYCLE, 408);
GD.wr32(REG_HOFFSET, 70);
GD.wr32(REG_HSIZE, 320);
GD.wr32(REG_HSYNC0, 0);
GD.wr32(REG_HSYNC1, 10);
GD.wr32(REG_VCYCLE, 263);
GD.wr32(REG_VOFFSET, 13);
GD.wr32(REG_VSIZE, 240);
GD.wr32(REG_VSYNC0, 0);
GD.wr32(REG_VSYNC1, 2);
GD.wr32(REG_DITHER, 0);
GD.wr32(REG_PCLK_POL, 0);
GD.wr32(REG_PCLK, 8);

Serial.println(" after begin()");
}

void loop()
{
 GD.ClearColorRGB(0x103000);
 GD.Clear();
 GD.cmd_text(GD.w / 2, GD.h / 2, 31, OPT_CENTER, "Hello world");
 GD.swap();
}


GD2.h
#ifndef _GD2_H_INCLUDED
#define _GD2_H_INCLUDED

#define GD2_VERSION "%VERSION"

#if defined(RASPBERRY_PI) || defined(DUMPDEV)
#include "wiring.h"
#endif

#include "Arduino.h"
#include <stdarg.h>

#define RGB(r, g, b)    ((uint32_t)((((r) & 0xffL) << 16) | (((g) & 0xffL) << 8) | ((b) & 0xffL)))
#define F8(x)           (int((x) * 256L))
#define F16(x)          ((int32_t)((x) * 65536L))

                           // Options for GD.begin():
#define GD_CALIBRATE    1   // enable touchscreen calibration at startup
#define GD_TRIM         2   // trim the built-in oscillator
#define GD_STORAGE      4   // initialize attached microSD
#define GD_NOBACKLIGHT  8   // don't turn on the backlight

#ifdef __SAM3X8E__
#define __DUE__ 1
#endif

#if !defined(SD_PIN)        // {

#if defined(ESP8266)
#define SD_PIN        D9    // pin used for the microSD enable signal
#elif defined(ARDUINO_ARCH_STM32)
#define SD_PIN        PB1
#else
#define SD_PIN        9     // pin used for the microSD enable signal
#endif

#endif                      // }

#define BOARD_FTDI_80x    0
#define BOARD_GAMEDUINO23 1
#define BOARD_SUNFLOWER   2
#define BOARD_OTHER       3


#define BOARD         BOARD_FTDI_80x // board, from above



#define STORAGE       0                 // Want SD storage?
#define CALIBRATION   1                 // Want touchscreen calibration?

// FTDI boards do not have storage
#if (BOARD == BOARD_FTDI_80x) || defined(RASPBERRY_PI) || defined(DUMPDEV) || defined(SPIDRIVER)
#undef STORAGE
#define STORAGE 0
#endif

#ifndef DEFAULT_CS
#if defined(ESP8266)
#define DEFAULT_CS D8
#elif defined(ARDUINO_ARCH_STM32)
#define DEFAULT_CS 53
#elif (BOARD == BOARD_FTDI_80x)
#define DEFAULT_CS 53
#else
#define DEFAULT_CS 8
#endif
#endif

#define MOSI  50
// for Arduino MEGA
#define MISO  51
 // for Arduino MEGA
#define SCK   52 // for Arduino MEGA


wiring.h
#ifndef CS
#if defined(ESP8266)
#define CS D8
#elif  defined(ESP32)
#define CS 12
#elif defined(ARDUINO_ARCH_STM32)
#define CS PB0
#elif (BOARD == BOARD_FTDI_80x)
#define CS 53
#else
#define CS 8
#endif
#endif


[kanlok]

Dec 12, 2020 22:54:33 GMT -8 kanlok said:

It seems GD2 library is not backward compatible with FT800 as I downloaded Gameduino2 Library and it works fine!

There is no need to define MISO/MOSI/SCK seprately as it is taken care of internally, when a correct board is selected.

Only need to select correct board in GD.h and Correct CS pin in wiring.h

Lokesh