/* THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
 * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
 * THE AUTHORS SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
 * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER. USE IT AT YOUR OWN RISK */

#include <LPC17xx.h>

//#define SPI
#define IRQ_BLINKY
//#define BLINKY

#ifdef DMA

#include "dac.h"
#include "sample.h"

int main (void) 
{
	dac_init();

	//	int i = 0;
	while(1) {
		//fiprintf(stderr, "Play #%d: %d samples\n\r", i++, sizeof(samples) / sizeof(short));
		dac_play_samples(samples, sizeof(samples) / sizeof(short));
	}
	return 0;
}

#endif
volatile uint32_t temp;

void _delay(uint32_t del);

#ifdef IRQ_BLINKY

volatile int resume = 0;

void TIMER0_IRQHandler (void) 
{  
  LPC_TIM0->IR = 1;			/* clear interrupt flag */
	resume = 1 - resume;
  //timer0_counter++;
  return;
}

int main (void) 
{
    LPC_SC->PCONP |= ( 1 << 15 ); // power up GPIO
    LPC_GPIO1->FIODIR |= 1 << 29; // puts P1.29 into output mode.

		int delayInMs = 1000;

		// Enable timer interrupts
		LPC_TIM0->MR0 = delayInMs * (9000000 / 1000-1); // interval
		LPC_TIM0->MCR = 3;				// Interrupt and Reset on MR0
		NVIC_EnableIRQ(TIMER0_IRQn);
		LPC_TIM0->TCR = 1;

    while(1) {
        LPC_GPIO1->FIOPIN |= 1 << 29; // make P1.29 high

				while(resume == 0) __WFI();

        LPC_GPIO1->FIOPIN &= ~( 1 << 29 ); // make P1.29 low

				while(resume == 1) __WFI();
    }

    return 0;
  
}

#endif

#ifdef BLINKY

int main (void) 
{
    LPC_SC->PCONP |= ( 1 << 15 ); // power up GPIO
    LPC_GPIO1->FIODIR |= 1 << 29; // puts P1.29 into output mode.
    while(1)
    {
        LPC_GPIO1->FIOPIN |= 1 << 29; // make P1.29 high
        _delay( 1 << 24 );
        LPC_GPIO1->FIOPIN &= ~( 1 << 29 ); // make P1.29 low
        _delay( 1 << 24 );
    }
    return 0;
  
}

#endif

#ifdef UART

#include "LPC17xx.h"
#include <stdint.h>
#include "uart.h"

int main (void)
{ 
	/* SystemClockUpdate() updates the SystemFrequency variable */
	// SystemCoreClockUpdate();//SystemClockUpdate();
  UARTInit(0, 115200);	/* baud rate setting */
	//  UARTInit(1, 8000);	/* baud rate setting */

	LPC_SC->PCONP |= ( 1 << 15 ); // power up GPIO
	LPC_GPIO1->FIODIR |= 1 << 29; // puts P1.29 into output mode.

  while (1) {
		LPC_GPIO1->FIOPIN |= 1 << 29; // make P1.29 high

		//LPC_UART0->IER = IER_THRE | IER_RLS;			// Disable RBR
		UARTSend(0, (uint8_t *)"hello\n\r", 7);
		//LPC_UART0->IER = IER_THRE | IER_RLS | IER_RBR;	// Re-enable RBR

		_delay( 1 << 22 );

		///

		LPC_GPIO1->FIOPIN &= ~( 1 << 29 ); // make P1.29 low
		/*
		LPC_UART0->IER = IER_THRE | IER_RLS;			// Disable RBR
		UARTSend( 0, (uint8_t *)"l", 1);
		LPC_UART0->IER = IER_THRE | IER_RLS | IER_RBR;	// Re-enable RBR
		*/
		_delay( 1 << 22 );

  }
}

#endif

#ifdef SPI

#include <cli.h>
#include <wm8523.h>
#include <led.h>

int main (void)
{
	//	SystemCoreClockUpdate(); 
	//  SystemInit();

	LED_Init();

  cli_init();

	cli_write("init");

	_delay(1 << 22);

	WM8523_init();

	cli_write("pre");

	_delay(1 << 22);

	WM8523_configure();

	cli_write("post");
}

#endif

void _delay(uint32_t del)
{
    uint32_t i;
    for(i=0;i<del;i++)
        temp = i;
}