p5.c

来自「y uurug bdf lgdfjg dfg df g dt」· C语言 代码 · 共 156 行

//Program to Configure the RTC and then to display the current time on the LCD

// Connect Data of LCD with P0.16-P0.23
// Connect Control of LCD with P0.8- P0.15

#include <LPC210x.h> 

#define   PLOCK       0x0400
#define   TIME        20000

#define DISP_FUNC 0x38 		 // sets the display to 8-bit, 2 lines, 5x7 chars + cursor-off 
#define DISP_ENTRY 0x06
#define DISP_CNTL 0x0E
#define DISP_ON 0x04
#define DISP_CURSOR 0x02
#define DISP_CLEAR 0x01
#define DISP_HOME 0x02
#define DISP_POS 0x80
#define DISP_BLINK 0x01
#define DISP_SECOND 0xC0

unsigned long b;
void Init(void);
void Delay (unsigned long a); 

unsigned char i,j;
 unsigned long Hour,Min,Sec;
char string[16]="    Advance    ";
char string1[16]="   Technology  ";

//---------------------------------------------------------
// System initializations
//PLL0FEED (PLL Feed Register) contains the 8-bit value last written to this register. 
//To set the clock configuration, this register must be stored with consecutive values of 0xAA and 0x55
//---------------------------------------------------------
void Init() {
    // Init PLL
    PLLCFG=0x23;                 // P=2, M=4, PLLfreq = 235,9296 Mhz, CCLK = 58,9824 Mhz
    PLLFEED=0xAA; PLLFEED=0x55;
    PLLCON=0x1;                 // Enable the PLL
    PLLFEED=0xAA; PLLFEED=0x55;
    while(!(PLLSTAT & PLOCK));  // Wait for PLL to lock
    PLLCON=0x3;                 // Connect PLL as clock source
    PLLFEED=0xAA; PLLFEED=0x55;   
    //Init MAM & Flash memory fetch
    MAMCR=0x2;                  //mam = flash
    MAMTIM=0x4;
    VPBDIV=0x1;                 //pclk = cclk
    //GPIO init
    IODIR=0xFFFFFFFF;           //All pins are output(LED)
} 

void Delay (unsigned long a)
{
    while (--a!=0);
}

//For writing the instruction of the LCD
void inswrt(unsigned char c)
{
		b  = (c << 16)|(0x02<<8);
		IOSET=b;
		IOCLR	=	0x00000200;
		IOCLR	=	0xFFFFFFFF;
		Delay(TIME);
}
// For writing the data on the LCD
void datawrt(unsigned char c)
{
		b  = (c << 16)|(0x03<<8);
		IOSET=b;
		IOCLR	=	0x00000300;
		IOCLR	=	0xFFFFFFFF;
		Delay(TIME);
}
//---------------------------------------------------------
// RESET entry
//---------------------------------------------------------


int main()
 {	  	IOCLR	=	0xFFFFFFFF;
    	Init();
		Delay(TIME);
// Instructions Before writing any data on the LCD
		inswrt(DISP_FUNC);
		inswrt(DISP_CNTL);
		inswrt(DISP_ENTRY);
		inswrt(DISP_CLEAR);		                  	
 
		CCR = 0;
 		CIIR = 0x00000000;
 		AMR = 0xFFFFFFFF;			//All the Alarm Register are masked and not used
 		// Setting the Current time on the RTC Registers
		SEC=0x00000000;
 		MIN=0x00000001;
 		HOUR=0x00000004;
 		DOM=0x0000000A;
 		DOW=0x00000004;
		DOY=0x000000010;
 		MONTH=0x00000008;
 		YEAR=0x000007D7;

/****** ORIGINAL VALUES *******/

PREINT = 1952;//1830; 
PREFRAC = 4096;//1792;	
						
// To Start the RTC
CCR=0x00000001;
while(1)
{ 
   inswrt(DISP_POS);		                  	
   i = DOM/10;
   datawrt(i+0x30);
   i = DOM%10;
   datawrt(i+0x30);
   datawrt('/');
   i = MONTH/10;
   datawrt(i+0x30);
   i = MONTH%10;
   datawrt(i+0x30);
   datawrt('/');
   inswrt(DISP_POS+0x09);		                  	
   i = YEAR%10;
   j = YEAR/10;
   datawrt(i+0x30);
   inswrt(DISP_POS+0x08);		                  	
   i = j%10;
   j = j/10;
   datawrt(i+0x30);
   inswrt(DISP_POS+0x07);		                  	
   i = j/10;
   j = j%10;
   datawrt(j+0x30);
   inswrt(DISP_POS+0x06);		                  	
   datawrt(i+0x30);
   inswrt(DISP_POS+0x40);		                  	
   i = HOUR/10;
   datawrt(i+0x30);
   i = HOUR%10;
   datawrt(i+0x30);
   datawrt(':');
   i = MIN/10;
   datawrt(i+0x30);
   i = MIN%10;
   datawrt(i+0x30);
   datawrt(':');
   i = SEC/10;
   datawrt(i+0x30);
   i = SEC%10;
   datawrt(i+0x30);  
  
  }
                     
}