ARM嵌入式应用系统开发典型实例.rar

				/**************************************************************************************************
				 * FILENAME
				 *     flash.c
				 *
				 * VERSION
				 *     1.0
				 *
				 * DESCRIPTION
				 *     This file contains the timer initial routine and timer ISR.
				 *
				 * DATA STRUCTURES
				 *     None
				 *
				 * FUNCTIONS
				 *     1. Fun_flash_writepage()
				 *     2. Fun_flash_readpage()
				 *	   3. Fun_wr_template()						
				 *	   4. Fun_rd_template()						
				 *	   5. Fun_del_template()						
				 *
				 * HISTORY
				 *     10/28/2003		 Ver 1.0 Created by Hank Ji
				 *
				 * REMARK
				 *     None
				 *     
				 *************************************************************************************************/
				#include 
				#include "740defs.h"
				
				#define C_Flash
				#include "ist.h"
				
				/************************************************/
				/*	Name: 	Fun_flash_writepage					*/
				/*	In:		page--要写的页数					*/
				/*	Out:	None								*/
				/*	Description: 								*/
				/*			写FLASH中的某页						*/
				/************************************************/
				void Fun_flash_writepage(uint16 page)
				{
				  uint32 i;
				/* write register */ 
				  Flash_Ctlreg1 = 0xaa;
				  Flash_Ctlreg2 = 0x55;
				  Flash_Ctlreg1 = 0xa0;
				
				  for(i=0;i				  {
				    VPchar(Flash_baseaddr+page*128+i) = flash_buffer[i];
				  }
				  
				  Fun_delay_1ms(15);
				}
				
				/************************************************/
				/*	Name: 	Fun_flash_readpage					*/
				/*	In:		page--要读的页数					*/
				/*	Out:	None								*/
				/*	Description: 								*/
				/*			读碏LASH中的某页					*/
				/************************************************/
				void Fun_flash_readpage(uint16 page)
				{
				  uint32 i;
				
				  for(i=0;i				  {
				    flash_buffer[i] = VPchar(Flash_baseaddr+page*128+i);
				  }
				}
				
				/************************************************/
				/*	Name: 	Fun_wr_template						*/
				/*	In:	 UserNum： 	     要写的用户（1，2 or 3)	*/
				/*		 pImageTemplate: 特征值存储缓冲指针		*/
				/*	Out:	NONE								*/
				/*	Description: 								*/
				/*			写某个用户的指纹特征值				*/
				/************************************************/
				void Fun_wr_template(uint8 UserNumber,uint8 *pImageTemplate)
				{
				  uint16 num,page,i;
				  uint8 j;
				  uint32 y;
				//  uint8 temp_buffer[128];
				
				  Fun_rd_parameter();
				start_wr:
				  for(i=0;i				  {
				     if((flash_buffer[i]==0xff)||(flash_buffer[i]==UserNumber))
				     {  
				       page = i;
				       flash_buffer[i] = UserNumber;
				       break; 
				     }
				  }
				  
				  num = MIN_template_size;
				  
					//write template to flash
				  for(i=0;i				  {
				    if(num > 128)
				    {
				   	  for(j=0;j				   	  {
				     	flash_buffer[j] = pImageTemplate[i*128+j];
				      }
				      Fun_flash_writepage(MA_USER1_PAGE + page*32 + i);
				  	}
				  	else
				    {
				   	  for(j=0;j				   	  {
				     	flash_buffer[j] = pImageTemplate[i*128+j];
				      }
				      
				   	  for(j=num;j				   	  {
				     	flash_buffer[j] = 0xff;
				      }
				      
				      Fun_flash_writepage(MA_USER1_PAGE + page*32 + i);
				      break;
					}
					num = num - 128;  
				  }
				
				  for(i=0;i				  {
				    y = Flash_baseaddr + (MA_USER1_PAGE+page*32)*128;
				    if(pImageTemplate[i] != VPchar(y+i))
				    {
				      Fun_rd_parameter();
				      flash_buffer[page] = 0xaa;
					  Fun_wr_parameter(); 
					  goto start_wr;
				    }
				  }  
				
					//then write parameter to flash page 0
				//end_wr:
				  Fun_rd_parameter();
				  flash_buffer[page] = UserNumber;
				  Fun_wr_parameter(); 
				}
				
				
				/************************************************/
				/*	Name: 	Fun_rd_template						*/
				/*	In:	 UserNum： 	     要读的用户（1，2 or 3)	*/
				/*	Out: pImageTemplate: 特征值存储缓冲指针		*/
				/*	Description: 								*/
				/*			读某个用户的指纹特征值				*/
				/************************************************/
				void Fun_rd_template(uint8 UserNumber,uint8 *pImageTemplate)
				{
				  uint16 page,i;
				  
				  Fun_rd_parameter();
				  for(i=0;i				  {
				     if(flash_buffer[i]==UserNumber)
				     {  
				       page = i;
				       break; 
				     }
				  }
				
				  for(i=0;i				  {
				    pImageTemplate[i] = VPchar(Flash_baseaddr+(page*32+MA_USER1_PAGE)*128+i);
				  }
				}
				
				/************************************************/
				/*	Name: 	Fun_del_template					*/
				/*	In:	 	UserNum -- 要删除的用户（1，2 or 3)	*/
				/*	Out: 	NONE								*/
				/*	Description: 								*/
				/*			删除某个用户						*/
				/************************************************/
				void Fun_del_template(uint8 UserNumber)
				{
				  uint8 i;
				  Fun_rd_parameter();
				
				  for(i=0;i				  {
				     if(flash_buffer[i]==UserNumber)
				     {  
				       flash_buffer[i] = 0xff;
				       break; 
				     }
				  }
				
				//  flash_buffer[User1_inf_offset + UserNumber-1] = 0xff;
				
				  Fun_wr_parameter();
				}
				
				
				
				uint8 Fun_rd_parameter(void)
				{
				  uint16 i;
				
				  for(i=0;i				  {
				    flash_buffer[i] = VPchar(Flash_baseaddr+MA_PARAM_PAGE1*128+i);
				  }
				
				  if(flash_buffer[Valid_inf_offset] == Valid_inf)
				  {
					 if(flash_buffer[Valid_inf_offset+128] != Valid_inf)
				  	 {
				        Fun_flash_writepage(MA_PARAM_PAGE2);
				     }
				     return 1;
				  }
				  else
				  {
					 if(flash_buffer[Valid_inf_offset+128] != Valid_inf)return 0;
				
				     for(i=0;i				     {
				       flash_buffer[i] = flash_buffer[i+128];
				     }
						   
					 Fun_flash_writepage(MA_PARAM_PAGE1);
				  
				     return 2;
				  }	
				}
				
				void Fun_wr_parameter(void)
				{
				  uint8 ch=0;
				  uint8 i;
				
				  for(i=0;i				  {
				    ch = ch+ flash_buffer[i];
				  }
				  flash_buffer[127] = ch;
				  flash_buffer[Valid_inf_offset] = Valid_inf;
				
				  Fun_flash_writepage(MA_PARAM_PAGE1);
				  Fun_flash_writepage(MA_PARAM_PAGE2);
				}