Multiple SPI problem (LED breakout + sd card module)

Development Boards Arduino
1

Hi everyone.

Here is the point : I want to use the SparkFun LED Driver Breakout (TLC5940) and a SD Card Module on my MEGA2560

Both of them are using the SPI protocol.

I try to make them coexist together but the SD card can’t be initialized when the TLC5940 is plugged.

What I have :

  • for the SD Card Module, I put the SS (it is called CS on my module) on pin 4 ;

  • to use the sparkfun breakout with my Arduino, I have included the TLC5940 library, the SS pin on a MEGA2560 is 53.

Theoretically there is no problem because both of the pins are different, but even if I manually set the pin 53 to HIGH when I try to use my SD card, the initialization fails.

Any Idea ?

Thanks (and sorry my English is so poor)