dm642main.c

奇想达QXD-DM642开发板提供的读写rtc实时时钟源码。

/******************************************************/
/*  深圳市奇想达科技有限公司QXD-DM642开发板源程序     */
/*  网址:http://www.szqxd.com						  */
/******************************************************/


#include <csl.h>
#include <std.h>
#include <csl_emifa.h>
#include <csl_i2c.h>
#include <csl_gpio.h>
#include <csl_irq.h>
#include <csl_chip.h>

#include "QXDdm642.h"
#include "QXDdm642_eeprom.h"
#include "QXDdm642_rtc.h"

/*QXDDM642的emifa的设置结构*/
EMIFA_Config QXDdm642ConfigA ={
	   0x00052078,/*gblctl EMIFA(B)global control register value */
	   			  /*将CLK6、4、1使能；将MRMODE置1；使能EK2EN,EK2RATE*/
	   0xffffffd3,/*cectl0 CE0 space control register value*/
	   			  /*将CE0空间设为SDRAM*/
	   0x73a28e01,/*cectl1 CE1 space control register value*/
	   			  /*Read hold: 1 clock;
	   			    MTYPE : 0000,选择8位的异步接口
	   			    Read strobe ：001110；14个clock宽度
	   			    TA：2 clock; Read setup 2 clock;
	   			    Write hold :2 clock; Write strobe: 14 clock
	   			    Write setup :7 clock
	   			    --					 ---------------
	   			  	  \		 14c		/1c
	   			 	   \----------------/ */
	   0x22a28a22, /*cectl2 CE2 space control register value*/
       0x22a28a42, /*cectl3 CE3 space control register value*/
	   0x57115000, /*sdctl SDRAM control register value*/
	   0x0000081b, /*sdtim SDRAM timing register value*/
	   0x001faf4d, /*sdext SDRAM extension register value*/
	   0x00000002, /*cesec0 CE0 space secondary control register value*/
	   0x00000002, /*cesec1 CE1 space secondary control register value*/
	   0x00000002, /*cesec2 CE2 space secondary control register value*/
	   0x00000073 /*cesec3 CE3 space secondary control register value*/	
};

/*QXDDM642的IIC的设置结构*/
I2C_Config QXDDM642IIC_Config = {
    0,  /* master mode,  i2coar;采用主模式   */
    0,  /* no interrupt, i2cimr;只写，不读，采用无中断方式*/
    (20-5), /* scl low time, i2cclkl;  */
    (20-5), /* scl high time,i2cclkh;  */
    1,  /* configure later, i2ccnt;*/
    0,  /* configure later, i2csar;*/
    0x4ea0, /* master tx mode,     */
            /* i2c runs free,      */
            /* 8-bit data + NACK   */
            /* no repeat mode      */
    (75-1), /* 4MHz clock, i2cpsc  */
};

CHIP_Config QXDDM642percfg = {
	CHIP_VP2+\
	CHIP_VP1+\
	CHIP_VP0+\
	CHIP_I2C+\
	CHIP_MCASP0
};


QXDDM642_RTC_Config rtcCfg = {
	0x2003,
	0x0012,
	0x0001,
	(0x0008 + RTC_X1226_24),/*采用24小时的模式*/
	0x0001,
	0x0002,
	0x0003
};

I2C_Handle hQXDdm642i2c;
extern far void vectors();
Uint32 rtcregvalue = 0;
Uint16 buffer[0x100];

/*此程序可将四个采集口的数据经过Video Port0送出*/
void main()
{
	Uint16 page, i;
    Uint8 *pdata;
/*-------------------------------------------------------*/
/* perform all initializations                           */
/*-------------------------------------------------------*/
	/*Initialise CSL，初始化CSL库*/
	CSL_init();
	CHIP_config(&QXDDM642percfg);
/*----------------------------------------------------------*/
	/*EMIFA的初始化，将CE0设为SDRAM空间，CE1设为异步空间
	 注，DM642支持的是EMIFA，而非EMIF*/
	EMIFA_config(&QXDdm642ConfigA);
/*----------------------------------------------------------*/
	/*中断向量表的初始化*/
	//Point to the IRQ vector table
    IRQ_setVecs(vectors);
    IRQ_nmiEnable();
    IRQ_globalEnable();
    IRQ_map(IRQ_EVT_VINT1, 11);
    IRQ_map(IRQ_EVT_VINT0, 12);
    IRQ_reset(IRQ_EVT_VINT1);
    IRQ_reset(IRQ_EVT_VINT1);	
/*----------------------------------------------------------*/	
	GPIO_RSET(GPGC,0x0);/*将GPIO0不做为GPINT使用*/
	GPIO_RSET(GPDIR,0x1);/*将GPIO0做为输出*/
	GPIO_RSET(GPVAL,0x1);/*GPIO0输出为高，选择IIC1总线*/
	/*初始化*/
	hQXDdm642i2c = I2C_open(I2C_PORT0,I2C_OPEN_RESET);
	I2C_config(hQXDdm642i2c,&QXDDM642IIC_Config);
	
	QXDDM642_waitusec(100);
	/*设置RTC*/
	/*PHz/IRQ设为32.768kHz的输出*/
	rtcregvalue =0x010;
	QXDDM642_RTC_write( hQXDdm642i2c,
						 (Uint32)(&rtcregvalue), 
						 RTC_X1226_INT, 
						 1);
	/*设置当前的时间值*/
	/*设置年*/
	rtcregvalue = (rtcCfg.year & 0xff00)>>8;
	QXDDM642_RTC_write( hQXDdm642i2c,
						  (Uint32)(&rtcregvalue), 
						  RTC_X1226_Y2K, 
						  1);
	rtcregvalue = rtcCfg.year & 0x00ff;
	QXDDM642_RTC_write( hQXDdm642i2c,
						  (Uint32)(&rtcregvalue), 
						  RTC_X1226_YR, 
						  1);
	/*设置月*/
	rtcregvalue = rtcCfg.month;
	QXDDM642_RTC_write( hQXDdm642i2c,
						  (Uint32)(&rtcregvalue), 
						  RTC_X1226_MO, 
						  1);
	/*设置日*/
	rtcregvalue = rtcCfg.day;
	QXDDM642_RTC_write( hQXDdm642i2c,
						  (Uint32)(&rtcregvalue), 
						  RTC_X1226_DT, 
						  1);
	/*设置时*/
	rtcregvalue = rtcCfg.hour;
	QXDDM642_RTC_write( hQXDdm642i2c,
						  (Uint32)(&rtcregvalue), 
						  RTC_X1226_HR, 
						  1);
	/*设置分*/
	rtcregvalue = rtcCfg.minutes;
	QXDDM642_RTC_write( hQXDdm642i2c,
						  (Uint32)(&rtcregvalue), 
						  RTC_X1226_MN, 
						  1);
	/*设置秒*/
	rtcregvalue = rtcCfg.seconds;
	QXDDM642_RTC_write( hQXDdm642i2c,
						  (Uint32)(&rtcregvalue), 
						  RTC_X1226_SC, 
						  1);
	/*设置星期*/
	rtcregvalue = rtcCfg.week;
	QXDDM642_RTC_write( hQXDdm642i2c,
						  (Uint32)(&rtcregvalue), 
						  RTC_X1226_DW, 
						  1);
/*-----------------------------------------------------------------*/
	for(;;){}
	
}