ctrl_set.c

一个基于三星s3c44b0x的串口协议转换器源码

#include "inc\44b0x.h"
#include "DataType.h"

#define	EXT_OSC_CLK	10000000

unsigned int MCLK = 64000000;

void ChangePllValue(int mdiv, int pdiv, int sdiv)
{
	int i = 1;			
	
	rPLLCON = (mdiv<<12)|(pdiv<<4)|sdiv;	
	
	while(sdiv--)
		i *= 2;	
	
	MCLK = 64000000;//(EXT_OSC_CLK*(mdiv+8))/((pdiv+2)*i);
			
}


/****************************************************************************
【功能说明】IO端口功能、方向设定
****************************************************************************/
void PortInit(void)
{
	//CAUTION:Follow the configuration order for setting the ports. 
	// 1) setting value 
	// 2) setting control register 
	// 3) configure pull-up resistor.
	// 4) 16bit data bus configuration
	
	// PORT A GROUP
	/*  BIT 9	8	7	6	5	4	3	2	1	0	*/
	/*  A24	  A23	A22	A21	A20	A19	A18	A17	A16	A0	*/	      
	/*  1		1	1	1	1	1	1	1	1	1	*/
	rPCONA = 0x3ff;	

	// PORT B GROUP
	/* BIT 10   9    8       7      6        5     4     3     2     1     0    */
	/*     /CS5 /CS4 /CS3    /CS2   /CS1     nWBE3 nWBE2 /SRAS /SCAS SCLS  SCKE	*/
	/*     EXT  8019  USB	IDE		NV_Flash NC    NC    Sdram Sdram Sdram Sdram*/
	/*     1,   1,     1,     1,     1,       0,    0,    1,    1,    1,    1    */
	//rPDATB = 0x7ff;
	rPDATB = 0x7cf;
	    
	//PORT C GROUP
	//BUSWIDTH=16													*/
	/*  PC15	14		13		12		11		10		9		8	*/
	/*	I		 O		RXD1	TXD1	I		I		O		O	*/
	/*	PS2DAT	DCLK	Uart1	Uart1	Dout	BUS		Din		CS	*/
	/*   00		01		11		11		00		00		01		01	*/

	/*  PC7		6		5		4		3		2		1		0	*/
	/*   o		o		o		o		o		o		o		o	*/
	/*  VD4		VD5		VD6		VD7		NFALE 	NFCLE 	NFCE 	NFRB*/
	/*   11		11		11		11		01		01		01		00	*/
	rPDATC = 0xffff;		//All IO is high 
	rPCONC = 0x1f05ff54;	
	rPUPC  = 0x3000;		//pull-up regiseter should be enabled

	//PORT D GROUP
	/*  PORT D GROUP(I/O OR LCD)										*/
	/*  BIT	7		6		5		4		3		2		1		0	*/
	/*      VF		VM		VLINE	VCLK	VD3		VD2		VD1		VD0	*/
	/*	   10		10		10		10		10		10		10		10	*/
	rPDATD= 0xff;
	rPCOND= 0xaaaa;	
	rPUPD = 0x00;
	//These pins must be set only after CPU's internal LCD controller is enable
	
	//PORT E GROUP 
	/*  Bit 8		7		6		5		4		3		2		1		0		*/
	/*		ENDLAN	LED4	LED5	LED6	LED7	BEEP	RXD0	TXD0	display	*/ 
	/*      10		01		01		01		01		01		10		10		01		*/
	rPDATE	= 0x1ff;
	rPCONE	= 0x25569;	//  8->CODECLK
	rPUPE	= 0x6;		//

	
	//PORT F GROUP
	/*  Bit8		7		6		5		 4		3		2		1		0		*/   
	/*  IISCLK	IISDI	IISDO	IISLRCK		nXDREQ0	nXDACK0	nWAIT	IICSDA	IICSCL	*/
	/*	100		100		100		100			11		11		10		10		10		*/
	rPDATF = 0x0;
	rPCONF = 0x2493ea;	//0,1->IICSCL IICSDA,  5~8->IIS PORT
	rPUPF  = 0x000;		//pull-up regiseter should be enabled


	//PORT G GROUP
	/*  BIT7		6		5		4		3		2		1		0	 */
	/*	INT7		INT6	INT5	INT4	INT3	INT2	INT1	INT0	*/
	/*    S1		S2		S3		S4		8019	EXT_PS2	IDE		USB	*/
	/*    00      	00      00      00      11      11      11      11       */
	rPCONG = 0x00ff; 	//EXINT0~3 enabled
	rPUPG  = 0x00;		//pull-up regiseter should be enabled
	
	rSPUCR = 0x7;  //D15-D0 pull-up disable
	//rSPUCR = 0x6;  //D15-D0 pull-up enable

	/*?ùóDμ?ía2?ó2?t?D???aμíμ???′￥·￠*/
	//rEXTINT = 0x0;
	rEXTINT=0x0|(1<<14);	//?ù?aμíμ???′￥·￠,Exint3éè???aé?éy??′￥·￠
	//rEXTINT = 0x42;				//?ùóDμ?ía2?ó2?t?D???aμíμ???′￥·￠, extint0 ?a???μ??￡?extint1?aé?éy??	
	//rEXTINT = (4<<16)|(4<<8)|(4<<4);	//EINT1é?éy??,EINT2é?éy??,EINT4é?éy???D??
	//rINTCON = 5;				// non vector mode, irq enable
	//rINTMOD = 0;		
		
}

/*********************************************************/
#define RTC_YEAR0		(0x03)		//年
#define RTC_MONTH0		(0x02)		//月
#define RTC_DAY0		(0x0e)		//日
#define RTC_DATE0		(0x06)		//星期SUN:1 MON:2 TUE:3 WED:4 THU:5 FRI:6 SAT:7
#define RTC_HOUR0		(0x08)		//小时
#define RTC_MIN0		(0x08)		//分
#define RTC_SEC0		(0x08)		//秒

#define RTC_YEAR1		(0x03)		//年
#define RTC_MONTH1		(0x03)		//月
#define RTC_DAY1		(0x0e)		//日
#define RTC_DATE1		(0x06)		//星期－SUN:1 MON:2 TUE:3 WED:4 THU:5 FRI:6 SAT:7
#define RTC_HOUR1		(0x08)		//小时
#define RTC_MIN1		(0x08)		//分
#define RTC_SEC1		(0x08)		//秒

#define	RTC_RW_EN()	rRTCCON = 1		//|= 1
#define	RTC_RW_DS()	rRTCCON &= 0xfe

void RtcSetDay(TIME_STRUC *time)
{
	RTC_RW_EN();				//RTC读写使能，选择BCD时钟、计数器，无复位，1/32768		
	rBCDYEAR = time->year;;		//年
    rBCDMON  = time->month;		//月
    rBCDDAY  = time->day;		//日	
	RTC_RW_DS();
}

void RtcSetWeek(TIME_STRUC *time)
{
	RTC_RW_EN();
	rBCDDATE = time->weekday;
	RTC_RW_DS();
}

void RtcSetTime(TIME_STRUC *time)
{
	RTC_RW_EN();				//RTC读写使能，选择BCD时钟、计数器，无复位，1/32768		
	rBCDHOUR = time->hour;		//小时
    rBCDMIN  = time->min;		//分
    rBCDSEC  = time->sec;		//秒
	RTC_RW_DS();
}


void RtcInit(TIME_STRUC *time)
{
    RTC_RW_EN();				//RTC读写使能，选择BCD时钟、计数器，无复位，1/32768
    rBCDYEAR = time->year;;		//年
    rBCDMON  = time->month;		//月
    rBCDDAY  = time->day;		//日
    rBCDDATE = time->weekday;	//星期
    rBCDHOUR = time->hour;		//小时
    rBCDMIN  = time->min;		//分
    rBCDSEC  = time->sec;		//秒
    
    rTICNT = 0x80+127;		//enable tick timer interrupt, set tick timer interrupt time = (127+1)/128 second	
    RTC_RW_DS();	
}

void RtcAlarm(TIME_STRUC *time)  
{
	rALMYEAR = time->year;		//年
	rALMMON  = time->month;		//月
	rALMDAY  = time->day;		//日
	rALMHOUR = time->hour;		//小时
	rALMMIN  = time->min;		//分
	rALMSEC  = time->sec; 		//秒

	rRTCALM = 0x7f;		//全局警报使能控制，年、月、日、星期、时分秒警报使能控制
}

void RtcGetTime(TIME_STRUC *time)
{
	U8 m;

	RTC_RW_EN();		//RTC读写使能
	time->year = 2000 + rBCDYEAR;
	time->weekday = rBCDDATE;

	m = rBCDMON;	
	time->month = m;//(m>>4)*10 + (m&0xf);	//BCD码转十进制

	m = rBCDDAY;	
	time->day = m;//(m>>4)*10 + (m&0xf);	//BCD码转十进制	

	m = rBCDHOUR;	
	time->hour = m;//(m>>4)*10 + (m&0xf);	//BCD码转十进制
	
	m = rBCDMIN;	
	time->min = m;//(m>>4)*10 + (m&0xf);	//BCD码转十进制

	m = rBCDSEC;			
	time->sec = m;//(m>>4)*10 + (m&0xf);	//BCD码转十进制
	
    RTC_RW_DS();		//RTC读写禁止(降低功率消耗)，选择BCD时钟、计数器，无复位，1/32768    

}

void InitSysTimer(U8 Freq)
{		
	rTCON   &= 0xf0ffffff;			//clear manual update bit, stop Timer 5 	
	rTCFG0  &= 0xff00ffff;			//定时器4/5的预分频为16
	rTCFG0  |= (16-1)<<16;
	rTCFG1  &= 0xff0fffff;			//定时器5的MUX为1/8
	rTCFG1  |= 2<<20;	
	rTCNTB5  = MCLK/(Freq*16*8);	//定时器5的重装值,在ENABLE之前设定	
	rTCON   |= 0x02000000;			//定时器5的MANUAL UPDATE BIT设为1
	rTCON   &= 0xf0ffffff;			//MANUAL UPDATE BIT清零
	rTCON   |= 0x05000000;			//定时器5 start, 设为INTERVAL模式
}