#include "LPC214x.H" 	                                	// LPC2148 MPU Register
#include <stdio.h>
#include "Timer.h"
#include "uart0.h"									// For Used Function printf

/* pototype  section */
void init_serial0 (void); 									// Initil UART-0
int putchar (int ch);  										// Put Char to UART-0
int getchar (void);  										// Get Char From Uart-0
void delay(unsigned long int);								// Delay Time Function


unsigned int val;		   									// ADC Result (HEX)
int   i = 0;
int volt=0;
const static unsigned short table_sine[64] = 				// Sine Function Table(12Bit)
	      {
 	        0x07FF, 0x08C8, 0x098E, 0x0A51,
			0x0B0F, 0x0BC4, 0x0C71, 0x0D12,
 	        0x0DA7, 0x0E2E, 0x0EA5, 0x0F0D,
			0x0F63, 0x0FA6, 0x0FD7, 0x0FF5,
 		    0x0FFF, 0x0FF5, 0x0FD7, 0x0FA6,
			0x0F63, 0x0F0D, 0x0EA5, 0x0E2E,
 	        0x0DA7, 0x0D12, 0x0C71, 0x0BC4,
			0x0B0F, 0x0A51, 0x098E, 0x08C8,
 	        0x07FF, 0x0736, 0x0670, 0x05AD,
			0x04EF, 0x043A, 0x038D, 0x02EC,
 	        0x0257, 0x01D0, 0x0159, 0x00F1,
			0x009B, 0x0058, 0x0027, 0x0009,
 	        0x0000, 0x0009, 0x0027, 0x0058,
			0x009B, 0x00F1, 0x0159, 0x01D0,
 	        0x0257, 0x02EC, 0x038D, 0x043A,
			0x04EF, 0x05AD, 0x0670, 0x0736
	      };

int main(void)
{
  uart_init();		 			   							// Initial UART0 = 9600,N,8,1
  printf("\nCP-JR ARM7 USB-LPC2148...TEST ADC7(P0.5)\n"); 	// Call prinff Function
  printf("Input Voltage 0-3.3V to P0.5 For Test\n"); 		// Call prinff Function

  // Initial ADC7 (GPIO-0.5) By Set PINSEL0[11:10=11]
  // xxxx xxxx xxxx xxxx xxxx 11xx xxxx xxxx
  PINSEL0 &= 0xFFFFF3FF; 									// Select ADC7 Pin Connect P0.5
  PINSEL0 |= 0x00000C00;

  // Initial ADC0 (ADCR=0x01210680)
  AD0INTEN = (0x100)|(7<<1);												// Disable ADC Interrupt
  AD0CR &= 0x00000000;										// Clear All Bit Control
  AD0CR |= 0x00000080;										// Select ADC = AIN7
  AD0CR |= 0x00000600;										// ADC Clock = VBP(PCLK) / 7
  AD0CR |= 0x00010000;                                     	// Busrt = 1 = Conversion Continue
  AD0CR &= 0xFFF1FFFF;										// CLKS = 000 = 10Bit : 11 Cycle Clock Conversion
  AD0CR |= 0x00200000;										// PDN = 1 = Active ADC Module
  AD0CR &= 0xFF3FFFFF;										// TEST[1:0] = 00 = Normal Mode
  AD0CR &= 0xF7FFFFFF;										// EDGE = 0 = Conversion on Falling Edge
  AD0CR |= 0x01000000;										// START = 001 = Start Conversion Now


  // Start Test Read ADC0 and Display on UART0 //
  while(1)													// Loop Continue
  {
    do			  											// Loop Read ADC1
    {
      val = AD0DR7;                   						// Read A/D Data Register
    }
      while ((val & 0x80000000) == 0);  					// Wait ADC Conversion Complete
	  val = (val >> 6) & 0x03E8; 							// Shift ADC Result to Integer

	  //volt = val * 3.3 / 1023.0;
	  val = (val+50)/50;	  									// Volt = ADC Result x [3.3V / 1024]
	  printf("ADC7 Result = %d Volt.\n",val);  				// Display 3-Digit Result(0-3.3V)
	  val = val/64;
	  TimerInit();
	  delay(10000);
    }
}

/***********************/
/* Delay Time Function */
void delay(unsigned long int count1)
{
  while(count1 > 0) {count1--;}								// Loop Decrease Counter
}

void TimerInit(void)
{
	VPBDIV		= 1;										//Configure the  VPB divi
	T0PR 		= 60;										//Load prescaler
	T0TCR 		= 2;										//Reset counter and prescaler
	T0MR0		= ((val)-1);
	T0MCR 		= 3;										//On match reset the counter and generate an interrupt
	T0TCR 		= 1;

	VICVectAddr4 = (unsigned)T0isr;							//Set the timer ISR vector address
	VICVectCntl4 = (0x20 | 4);								//Set channel
	VICIntEnable |= (1 << 4);								//Enable the interrupt
	PINSEL1 &= 0xFFF3FFFF;									// Select DAC Pin Connect P0.25
  	PINSEL1 |= 0x00080000;
}

void T0isr (void)	__irq
{
	DACR = ((table_sine[i]/4) << 6);
	i++;
	i &= 0x3F;
	T0IR = 1;
	VICVectAddr = 0;
	//printf("val  = %d\n",val);
}

void TimerOn(void){}
void TimerOff(void){}