#define PIOA 0x400E0E00u
#define PIOB 0x400E1000u
#define PIOC 0x400E1200u
#define PIOD 0x400E1400u

#define PORT PIOC

#define PIO_PER  *((volatile unsigned int *)(PORT + 0x0000u))
#define PIO_OER  *((volatile unsigned int *)(PORT + 0x0010u))
#define PIO_SODR *((volatile unsigned int *)(PORT + 0x0030u))
#define PIO_PUDR *((volatile unsigned int *)(PORT + 0x0060u))
#define PIO_WPMR *((volatile unsigned int *)(PORT + 0x00E4u))

#define PIO_WPKEY 0x50494Fu

#define PMC_PID          13
#define PMC_WPKEY 0x504D43u

#define PMC_WPMR   *((volatile unsigned int *)(PORT + 0x400E06E4u))
#define PMC_PCER0  *((volatile unsigned int *)(PORT + 0x400E0610u))

#define GPIO_NUM                 1
#define GPIO_MASK (1u << GPIO_NUM)

int main(void)
{
	// enable peripheral clock
	PMC_WPMR = PMC_WPKEY << 8;
	PMC_PCER0 |= (1u << PMC_PID);
	PMC_WPMR = (PMC_WPKEY << 8) | 1u;

	// enable port, set to output, disable pull-up
	PIO_WPMR = PIO_WPKEY << 8;
	PIO_PER  |= GPIO_MASK;
	PIO_OER  |= GPIO_MASK;
	PIO_PUDR |= GPIO_MASK;
	PIO_WPMR = (PIO_WPKEY << 8) | 1u;

	// set pin to logic 1
	PIO_SODR |= GPIO_MASK;
	
	for (;;)
		;

	return 0;
}