ContentsIndex
Example
SPIClass::begin Method
#include <SPI.h>
#define SS_PIN    10

void setup()
{
    pinMode(SS_PIN, OUTPUT);
    SPI.begin();    
}
void loop()
{
    byte ret_val;
    digitalWrite(SS_PIN, LOW);
    ret_val = SPI.transfer(100);
    digitalWrite(SS_PIN, HIGH);
    delay(1000);
}