TFT 5'' lcd display SD card can't read the file

Other Hardware Displays
1

Hi,

I am using a 5'' lcd display, arduino Mega and

this shield. I have attached a 2GB FAT SD card into this shield

The libraries i am using are <tinyFAT.h> <UTFT.h> <UTFT_tinyFAT.h> and i use the Demo_Landscape example to test my 5" lcd display

However, the screen just show "File not found..."

I would be glad if anyone could help in this matter

Thanks and regards

2

Learn to use search!!!!!!!!!!!!!!

http://forum.arduino.cc/index.php?topic=380141.0

Graham

3

i tried using the UTFT_SdRaw library

the serial monitor shows the following :

Initialising SD card...
Card failed, or not present
Retrying....

but the SD card was put in the SD slot
Does any specification restrictions for the SD card?

Thanks!

4

Did you set the right pin of the sd card reader?

5

My arduino shield datasheet said that "SD Card Chip Select Signal, Arduino Board Digital IO 47"
So i changed the #define SD_CHIP_SELECT 53 to #define SD_CHIP_SELECT 47
but it still not working

6

Hi hu,

If you are sure you have the correct SD_CHIP_SELECT pin, the only other likely problem is SPI speed.

Find this line     if (!sd.begin(SD_CHIP_SELECT, SPI_FULL_SPEED)) { .

Where it says SPI_FULL_SPEED, you can try SPI_HALF_SPEED, SPI_QUARTER_SPEED or SPI_EIGHTH_SPEED.

Clearly you want the fastest that works reliably as the slower the SPI speed, the slower your images will be drawn.

Hope this helps.

Regards,

Graham

7

I tried SPI_HALF_SPEED, SPI_QUARTER_SPEED and SPI_EIGHTH_SPEED
But still said

Initialising SD card...
Card failed, or not present
Retrying....

Is my SD card's problem?

8

How are you connecting your display to the Arduino? Either there is a 'jumper' somewhere that needs enabling, you have something wrong with your wiring, or something is faulty. That is the only conclusion I can make at this point.

Regards,

Graham