TreelLab/prog/sources/setup-loop.cpp

#include "all-headers.h"

// Led L2 is connected to PORTD:7 (active high)

void setup (void) {
	// Configure PTD7 as digital port (input or output)
	PORTD_PCR (7) = PORT_PCR_MUX (1) ;

	// Configure PTD7 as digital output port (output level is low --> led is off)
	GPIOD_PDDR |= (1 << 7) ;

	// Init clock
	startSystick();
}

void loop (void) {
	// Drive PTD7 high --> led is on
	GPIOD_PSOR = 1 << 7 ;

	// Wait...
	busyWaitDuring(500);

	// Drive PTD7 low --> led is off
	GPIOD_PCOR = 1 << 7 ;

	// Wait...
	busyWaitDuring(500);
}