gd2.h - teensy3.1/3.2 - ft800cb ???

[rayman]

hi,

why crash the display ?
the time to crash is always different ?

can anyone give me a hint ...


i use the follow simple test-code

void setup() {
   //  wakeup display (pd-pin)
   pinMode(4, OUTPUT);
   digitalWrite(4, HIGH);
   delay(20);
   digitalWrite(4, LOW);
   delay(20);
   digitalWrite(4, HIGH);
   delay(20);

   GD.begin(~GD_STORAGE);
   GD.ClearColorRGB(BLACK);
   GD.Clear();
   GD.swap();
}

void loop() {
   GD.ClearColorRGB(BLACK);
   GD.Clear();
   GD.cmd_number(240, 136, 31, OPT_CENTER, count);
   count++;
   GD.swap();
}


[rayman]

hi @all ...

i've tried with a arduino uno, works perfect ...

thae same code and hw-pin-setting dosn't work with teensy3.1/3.2 ;(

does somebody has any idea... ?

[tftlcdcyg]

Try to reduce the long of the wires between the break board and the teensy board.  

See this post:

gameduino2.proboards.com/thread/253/teensy-3-2-gameduino

[rayman]

i have run a gameduino2 with my teensy, no problem, my problem is the combination from teensy with hotmcu-display

thx for hint with the length of wires ... i will try that

sorry for my bad english

[rayman]

uff ... with shorter cables works perfect !!!

thx for the note ...

[rayman]

now i have the next problem ;(

i add sd-card to spi-bus, works perfect if i remove mosi-wire (pin13)


if i add the display-mosi to the spi-bus, access to the sd-card not possible


any hints

thx

[rayman]

replace the old 2gb sd-card with a new 4gb card ... and works fine

[tftlcdcyg]

1. Try with a SD card from Kingston 4 or 8 Gb

2. This is my setup with Teensy 3.2 and FT813 5" screen from Riverdi:


FT813/Gameduino 2/SD reader           Teensy 3.2

MOSI                                      11
MISO                                      12
SCLK                                      13
CS-screen                                  8

CD SD reader                              21

GND                                      GND
VCC                                    3.3 V
The SPI wires from the screen must be connect in the same lines that SPI lines from SD reader.