Hi,
I have following matrix with modules on SPI arduino uno. I use also the TFT Arduino Shield. The CAN Shield is right now not connected.
SPI arduino | CAN | TFT | SD |
---------------------------------------------------------------------
MISO (Master In Slave Out) 12 | SO | | MISO |
MOSI (Master Out Slave In) 11 | SI | | MOSI |
SCK (Serial Clock) 13 | SCK | | SCK |
7 | | D/C | |
6 | | RESET | |
| | | |
SS/CS (Slave Select) 10 | cs | | |
SS/CS (Slave Select) 9 | | LCD_CS | |
SS/CS (Slave Select) 8 | | | SD_CS |
So the TFT is working fine with the sketch below, but I can not read from SD card.
Serial output
Initializing SD card...failed!
Is that Pin configuration not possible as shown in the matrix?
I use this SD card already with success in arduino Yun
/*
Arduino TFT Bitmap Logo example
This example reads an image file from a micro-SD card
and draws it on the screen, at random locations.
In this sketch, the Arduino logo is read from a micro-SD card.
There is a .bmp file included with this sketch.
- open the sketch folder (Ctrl-K or Cmd-K)
- copy the "arduino.bmp" file to a micro-SD
- put the SD into the SD slot of the Arduino TFT module.
This example code is in the public domain.
Created 19 April 2013 by Enrico Gueli
http://www.arduino.cc/en/Tutorial/TFTBitmapLogo
*/
// include the necessary libraries
#include <SPI.h>
#include <SD.h>
#include <TFT.h> // Arduino LCD library
// pin definition for the Uno
#define sd_cs 8
#define lcd_cs 9
#define dc 7
#define rst 6
TFT TFTscreen = TFT(lcd_cs, dc, rst);
// this variable represents the image to be drawn on screen
PImage logo;
void setup() {
// initialize the GLCD and show a message
// asking the user to open the serial line
TFTscreen.begin();
TFTscreen.background(0, 0, 0);
TFTscreen.stroke(255, 255, 255);
TFTscreen.println();
TFTscreen.println(F("Arduino TFT Bitmap Example"));
TFTscreen.stroke(255, 255, 255);
TFTscreen.println(F("Open serial monitor"));
TFTscreen.println(F("to run the sketch"));
// initialize the serial port: it will be used to
// print some diagnostic info
Serial.begin(250000);
while (!Serial) {
// wait for serial port to connect. Needed for native USB port only
}
delay(10000);
// clear the GLCD screen before starting
TFTscreen.background(0, 0, 0);
// try to access the SD card. If that fails (e.g.
// no card present), the setup process will stop.
Serial.print(F("Initializing SD card..."));
if (!SD.begin(sd_cs)) {
Serial.println(F("failed!"));
return;
}
Serial.println(F("OK!"));
// initialize and clear the GLCD screen
TFTscreen.begin();
TFTscreen.background(0, 0, 0);
// now that the SD card can be access, try to load the
// image file.
logo = TFTscreen.loadImage("logo.bmp");
if (!logo.isValid()) {
Serial.println(F("error while loading arduino.bmp"));
}
}
void loop() {
// don't do anything if the image wasn't loaded correctly.
if (logo.isValid() == false) {
return;
}
Serial.println(F("drawing image"));
// get a random location where to draw the image.
// To avoid the image to be draw outside the screen,
// take into account the image size.
int x = random(TFTscreen.width() - logo.width());
int y = random(TFTscreen.height() - logo.height());
// draw the image to the screen
TFTscreen.image(logo, x, y);
// wait a little bit before drawing again
delay(1500);
}
Thanks for your help.
