Pins for sd card and tft shield [SOLVED]

[Sueur Aurelien]

Hi Fernando

I make my Arduino for a Freeduino, i have modified my tft shield by route pin 53 to pin 4 ok

But for the ethernet module it's same pin than for sd card 50 51 52 ?

Can you help me please ?

[Fernando Garcia]

Hi!

Please search before of create a topic.

This question was explained here:

viewtopic.php?f=24&t=36

And here:

viewtopic.php?f=24&t=41

Best regards.

[Sueur Aurelien]

Yes i have read all topic about this but i don't undstand.

i modified my tft shield as indicated

i have this module

you say :
"No changes are required.

To prevent conflict between SD card from TFT and SD card on ethernet shield, you must remove pins 50, 51, 52 and 53 of the TFT shield."

I do remove this pin or not ?

If i remove this, my sd card reader dosen't work.

sd card are not compatible with ethernet module ?

"S0,S1,SCK is a bus and all device are in parralel ?

Thank you

[Fernando Garcia]

Hi!

If you have this module, you'll need of the SD slot on TFT.

So you can't remove pins 50, 51 and 52 from TFT shield.

The interface SPI (pins 50, 51 and 52) can be shared with many devices, only the Select Slave need be different.

If you made the bridge between the resistor and the pin 4, you'll have pin 53 as SS to the ethernet module and the pin 4 to the SD card.

Best regards.

[Sueur Aurelien]

Hi Fernando

Pins 50,51 and 52 are shared between different devices

I had a doubt, I would prefer request

Thank you