hw_fm31xxx_api.c

1、基于韩国at2041芯片开发的Linux环境的DVR代码。 2、以原来代码进行了修改。 3、主要修改网络通讯出现异常问题处理 4、硬盘覆盖录像不起作用

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/********************************************************************************
 *                                                                              *
 * Copyright(C) 2004  Penta-Micro                                               *
 *                                                                              *
 * ALL RIGHT RESERVED                                                           *
 *                                                                              *
 * This software is the property of Penta-Micro and is furnished under          *
 * license by Penta-Micro. This software may be used only in accordance         *	
 * with the terms of said license. This copyright notice may not be             *
 * removed, modified or obliterated without the prior written permission        *
 * of Penta-Micro.                                                              *
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 * This software may not be copyed, transmitted, provided to or otherwise       *
 * made available to any other person, company, corporation	or other entity     *
 * except as specified in the terms of said license.                            *
 *                                                                              *
 * No right, title, ownership or other interest in the software is hereby       *
 * granted or transferred.                                                      *
 *                                                                              *
 * The information contained herein is subject to change without notice and     *
 * should not be construed as a commitment by Penta-Micro.                      *
 *                                                                              *
 ********************************************************************************
 
  MODULE NAME:  HW_FM31XXX_API.C
  
  REVISION HISTORY:
  
  Date       Ver Name                           Description
  ---------- --- --------------------- -----------------------------------------
  08/25/2005 1.0 JiGwanKang(xchannel)  Created   
 ...............................................................................
 
  DESCRIPTION:
  
  This Module contains definition for NVRAM and RTC (for FM31xxx) function.
  
 ...............................................................................
*/  
 

/** ************************************************************************* ** 
 ** includes
 ** ************************************************************************* **/
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <asm/ioctl.h>
#include <asm/errno.h>
#include <linux/i2c.h>
#include <linux/i2c-dev.h>
#include <time.h> /* for struct tm */

#include "hw_fm31xxx_api.h"


/** ************************************************************************* ** 
 ** defines
 ** ************************************************************************* **/
//#define m_DEBUG(format, args...)  printf(format, ## args) 
#define m_DEBUG(format, args...)  
#define m_MSG(format, args...)	printf(format, ## args) 
#define m_ERROR(format, args...)  printf(format, ## args);fflush(stdout);


/** ************************************************************************* ** 
 ** typedefs
 ** ************************************************************************* **/

	 
/** ************************************************************************* ** 
 ** globals
 ** ************************************************************************* **/

  
/** ************************************************************************* ** 
 ** locals
 ** ************************************************************************* **/
static S32	fd_fm31;


/** ************************************************************************* ** 
 ** forward declarations
 ** ************************************************************************* **/

RETURN fm31xxx_open(void) 
{
	if ((fd_fm31 = open("/dev/i2c-0", O_RDWR)) < 0) {
		m_ERROR("Open FM31xxx Fail\n");
		return FAILURE;
	}

	return SUCCESS;
}

void fm31xxx_close(void)
{
	close(fd_fm31);
}

RETURN fm31xxx_write_reg(UNS8 sub_addr, UNS8 data)
{
	UNS8	buf[2];	
	
	if (ioctl(fd_fm31, I2C_SLAVE_FORCE, FM31xxx_RTC_ADDR) < 0) {
		m_ERROR("hw_fm31xxx_api.c: set slave addr error\n");
		
		return FAILURE;
	}

	buf[0] = sub_addr;
	buf[1] = data;
	
	if (write(fd_fm31, buf , 2) != 2) {
		m_ERROR("hw_fm31xxx_api.c: write data error\n");
		
		return FAILURE;
	}
	
	return SUCCESS;
}
	
RETURN set_cur_time(struct tm *tmp)
{
	struct fm31xxx_st bbclk;
	UNS8	reg, data, temp_date[8];
	time_t tmp_t;
	
	memset(&bbclk,0x00,sizeof(bbclk));

	/* Gregorian Day */
	tmp_t = mktime(tmp);
	tmp = localtime(&tmp_t);

	bbclk.sec10=tmp->tm_sec/10;
	bbclk.sec=tmp->tm_sec%10;

	bbclk.min10=tmp->tm_min/10;
	bbclk.min=tmp->tm_min%10;

	bbclk.hr10=tmp->tm_hour/10;
	bbclk.hr=tmp->tm_hour%10;

	bbclk.day= tmp->tm_wday + 1;
	
	bbclk.date10=tmp->tm_mday/10;
	bbclk.date=tmp->tm_mday%10;

	bbclk.month10=(tmp->tm_mon+1)/10;
	bbclk.month=(tmp->tm_mon+1)%10;

	bbclk.year10=(tmp->tm_year-100)/10;
	bbclk.year=(tmp->tm_year-100)%10;

	fm31xxx_write_reg(0x01, 0x01);
	fm31xxx_write_reg(0x00, 0x00);
	fm31xxx_write_reg(0x00, 0x02);

	temp_date[0] = 0x02;
	memcpy(temp_date+1, &bbclk, sizeof(bbclk));
	if (write(fd_fm31, temp_date , sizeof(temp_date) ) != sizeof(temp_date)) {
		m_ERROR("hw_fm31xxx_api.c: write data error\n");
		
		return FAILURE;
	}

	return SUCCESS;
}

RETURN get_cur_time(struct tm *tmp)
{
	UNS8	buf[2];	
	struct fm31xxx_st bbclk;
	UNS8 temp_date[7];

	fm31xxx_write_reg(0x01, 0x01);
	fm31xxx_write_reg(0x00, 0x00);
	fm31xxx_write_reg(0x00, 0x01);

	buf[0] = 0x02;
	if (write(fd_fm31, buf , 1) != 1) {
		m_ERROR("hw_fm31xxx_api.c: write data error\n");
		
		return FAILURE;
	}
	
	if(read(fd_fm31, temp_date, 7) != 7)
	{
		m_ERROR("hw_fm31xxx_api.c: read data error\n");
		
		return FAILURE;
	}
	memcpy(&bbclk, temp_date, 7);

	tmp->tm_sec=10*bbclk.sec10+bbclk.sec;
	tmp->tm_min=10*bbclk.min10+bbclk.min;
	tmp->tm_hour=10*bbclk.hr10+bbclk.hr;
	tmp->tm_wday=bbclk.day;
	tmp->tm_mday=10*bbclk.date10+bbclk.date;
	tmp->tm_mon=10*bbclk.month10+bbclk.month;
	tmp->tm_year=10*bbclk.year10+bbclk.year + 2000;

	tmp->tm_yday = 0;
	tmp->tm_isdst= 0;
	
	return SUCCESS;
}

RETURN set_nvram_para(S32 offset, S32 size, UNS32 *value)
{
	UNS16   ii;
	UNS8	buf[2];	

	if (ioctl(fd_fm31, I2C_SLAVE_FORCE, FM31xxx_NVRAM_ADDR) < 0) {
		m_ERROR("hw_fm31xxx_api.c: set slave addr error\n");
		
		return FAILURE;
	}

	offset &= 0x7fff;
	
	buf[0] = (offset >> 8) & 0x7f;
	buf[1] = offset & 0xff;
	
	for(ii=0;ii < size;ii++)  
		buf[2+ii] = (*value >> (((size - 1) - ii) * 8)) & 0xff;
	
	if (write(fd_fm31, buf , size+2 ) != (size+2)) {
		m_ERROR("hw_fm31xxx_api.c: write data error\n");
		
		return FAILURE;
	}
	
	return SUCCESS;
}

S32 get_nvram_para(S32 offset, S32 size)
{
	S32       result = 0;
	UNS16   ii;
	UNS8	buf[4];	

	if(ioctl(fd_fm31, I2C_SLAVE_FORCE, FM31xxx_NVRAM_ADDR) < 0)
	{
		m_ERROR("hw_fm31xxx_api.c: set slave addr error\n");
		
		return FAILURE;
	}

	offset &= 0x7fff;
	
	buf[0] = (offset >> 8) & 0x7f;
	buf[1] = offset & 0xff;
	
	if(write(fd_fm31, buf, 2) != 2)
	{
		m_ERROR("hw_fm31xxx_api.c: sub addr write data error\n");
		
		return FAILURE;
	}
	
	if(read(fd_fm31, buf, size) != size)
	{
		m_ERROR("hw_fm31xxx_api.c: read data error\n");
		
		return FAILURE;
	}
	for(ii=0;ii<size;ii++)
		result |= buf[(size-1) - ii] << (ii*8);


	return result;
}

/* end of hw_nvram_api.c */