How to use Bluno beetle's SPI interface?

the picture could be find on the Bluno beetle wiki page. And you could also find its pcb diagram on the product page and dig into it's pcd disign.

Unfortunately, I didn't find SPI's ss/cs pin which is for chip selecting. I guess this ICSP is for download sketch or uploading micro chip's firmware, so the ss/cs pin is alway ready for that purpose. Any way, you can find the ss/cs pin is D10 but was not connect with user's interface because there is no D10.

But there's still other two method to make it:

1 So you have to solder the D10 separately. You have to be very careful to avoid burning the chip out or soldering the chip pin together.


2 Generally speaking , the SS/CS pin could be defined by user, so you can reverse the sketch, and wire the ss/cs pin to D4.
e.g: the SD module:
Code: Select allconst int chipSelect = 4;   //instead of ----> const int chipSelect = 10; 
//rest code not display
  // we'll use the initialization code from the utility libraries
  // since we're just testing if the card is working!
  if (!card.init(SPI_HALF_SPEED, chipSelect)) 
//rest code not display


Sorry I don't have a chance to try my idea, can anyone have a test?

Have a nice day!