UNO - it's as if the SPI library isn't linking properly

Projects Programming
1

For some reason my UNO is hanging on any call to the SPI library. I have tried manually setting up the SPI port instead of calling SPI.begin and then things will hang on SPI.transfer(0x7f)

It's as if the library isn't linking properly. I do not get any compile errors. I've been banging my head against this for hours. UNO, Win8.1

With this code the LED blinks 3 times only:

#include <SPI.h>

int led1 = 13;

void setup() {

  pinMode(led1, OUTPUT);

  blinkLED();
  blinkLED();
  blinkLED();
  SPI.begin();
  blinkLED();
  blinkLED();
  blinkLED();
}

void blinkLED(void) {
  digitalWrite(led1, HIGH);
  delay(200);
  digitalWrite(led1, LOW);
  delay(200);
}

void loop() {}
2

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3 
int led1 = 13;

Pin 13 on the Uno is one of the hardware SPI pins (SCK). Once you do an SPI.begin you can no longer control it yourself. Hence it stops blinking.

4

Done. My apologies.

5

That should do it, thank you.