44blib.c

S3C44B0X内置LCD的应用

/************************************************
 * NAME    : 44BLIB.C				*
 * Version : 17.APR.00				*
 ************************************************/

#include "44b.h"
#include "44blib.h"
#include "def.h"
#include "option.h"

#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>

#define STACKSIZE    0xa00
//SVC satck size(do not use user stack)

#define HEAPEND     (_ISR_STARTADDRESS-STACKSIZE-0x500) // = 0xc7ff000
//SVC Stack Area:0xc(e)7ff000-0xc(e)7ffaff

U32	UART_BAUD = 115200 ;		//串口波特率设定
//U32	UART_BAUD = 57600 ;		//串口波特率设定

U32 MCLK = 64000000;		//系统主频设定

extern char Image$$RW$$Limit[];//使用在外部文件定义的字符变量型数组Image$$RW$$Limit[]

void *mallocPt=Image$$RW$$Limit;//把数组首地址赋给指针变量


/******************************************/
static int delayLoopCount=400;//静态全局变量



/************************************************************
*函数名：Delay
*功能：延时指定时间，单位为100us即0.1ms
*入口参数：time---延时数量
*出口参数：无
************************************************************/
void Delay(int time)
// time=0: adjust the Delay function by WatchDog timer.
// time>0: the number of loop time，100us resolution.
{
    int i,adjust=0;
    if(time==0)
    {
		time=200;
		adjust=1;
		delayLoopCount=400;
		rWTCON=((MCLK/1000000-1)<<8)|(2<<3);    //MCLK/1M,Watch-dog disable,1/64,interrupt disable,reset disable
		rWTDAT=0xffff;//for first update
		rWTCNT=0xffff;//resolution=64us	@any MCLK 
		rWTCON=((MCLK/1000000-1)<<8)|(2<<3)|(1<<5); //Watch-dog timer start
    }

    for(;time>0;time--)
    {
	    for(i=0;i<delayLoopCount;i++)
	    {
	      ;
	    }
    }
    if(adjust==1)
    {
		rWTCON=((MCLK/1000000-1)<<8)|(2<<3);//Watch-dog timer stop
		i=0xffff-rWTCNT;		//1count->64us, 200*400 cycle runtime = 64*i us
		delayLoopCount=8000000/(i*64);	//200*400:64*i=1*x:100 -> x=80000*100/(64*i)   
    }
    
}

/************************************************************
*函数名：Port_Init
*功能：所有IO口初始化
*入口参数：无
*出口参数：无
************************************************************/
void Port_Init(void)
{
    //SMDK41100 B/D Status
    //LED D5  D6
    //	  PB9 PB10
    //S/W S4  S5 
    //	  PG5 PG4

    //CAUTION:Follow the configuration order for setting the ports. 
    // 1) setting value 
    // 2) setting control register 
    // 3) configure pull-up resistor.  
	     
    //16bit data bus configuration  
    //PORT A GROUP
    //ADDR24 ADDR23 ADDR22 ADDR21 ADDR20 ADDR19 ADDR18 ADDR17 ADDR16 ADDR0		      
    //     1,     1,	 1,     1,     1,     1,     1,	    1,     1,    1
    rPCONA=0x3ff;
    

    //PORT B GROUP
    //OUT OUT nGCS3 nGCS2 nGCS1 nWBE3 nWBE2 nSRAS nSCAS SCLK SCKE
    //  0,  0,    1,	1,    1,    0,    0,	1,    1,   1,   1
    rPDATB=0x600;
    rPCONB=0x1cf;
    
    //PORT C GROUP
#if (BUSWIDTH==32)
    //D31 D30 D29 D28 D27 D26 D25 D24 D23 D22 D21 D20 D19 D18 D17 D16
    // 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10	
    rPCONC=0xaaaaaaaa;	
    rPUPC=0xffff;	
#else //BUSWIDTH=16
    //PORT C GROUP
    //Input or Output
    rPDATC=0x0001;
    rPCONC=0x5f555554;	
    rPUPC=0x3000;
#endif

    //PORT D GROUP
    //VFRAME VM VLINE VCLK VD3 VD2 VD1 VD0
    //    10,10,   10,	10, 10,	10, 10,	10  
    rPCOND=0xaaaa;	
    rPUPD=0xff;

	//PORT E GROUP 
	/*  Bit 8		7		6		5		4		3		2		1		0		*/
	/*		ENDLAN	LED3	LED2	LED1	LED0	BEEP	RXD0	TXD0	CLKOUT	*/ 
	/*      00		01		01		01		01		01		10		10		01		*/
	rPDATE	= 0x357;
	rPCONE	= 0x556b;	
	rPUPE	= 0x6;

    //PORT F GROUP
    //All input
    //    0x0
    rPDATF=0x0;
    rPCONF=0x0;
    rPUPF=0x3;

    //PORT G GROUP
    //All input
    //	  0x0
    rPCONG=0xf00;
    rPUPG=0x30;	 
    
    rSPUCR=0x3;  //pull-up disable

    rEXTINT=0x22222222;  //All EINT[7:0] will be falling edge triggered.
}


static int whichUart=0;
/************************************************************
*函数名：Uart_Init
*功能：UART初始化
*入口参数