main.c

这是我做项目时的一个NX25P40(FLASH)芯片测试程序。相信对做单片机开发需要大容量FLASH的朋友有帮助。该测试程序采用keil51开发

#include "reg52.h"
#include "stdio.h"
#include "string.h"
#include "51LIB.h"
#include "SM59264.h"
#include "NX25P40.h"
typedef void (*BOOT)(void);
unsigned long writer,reader;
void main(void)
{unsigned char temp,buf[64];
 unsigned long *p;
 unsigned char flag; 
 BOOT reset;
 En_SMMem();
 for(temp=0;temp!=32;temp++)
     buf[temp]=temp;
 buf[1]=0xff;
 Init_Uart(0xfa,0xfa);
 while(!RI);{RI=0;temp=SBUF;}
 begin:
       p=Init_Datasheet();
 reader=*p; writer=*(p+1);
 if(writer==0x40000)
     Delet_Datasheet();
 printf("Reader is %#lx\r\n",reader);
 printf("Writer is %#lx\r\n",writer);
 while(1)
    {if(RI)
	    {RI=0;temp=SBUF;putchar(temp);
		 if(temp=='\r')putchar('\n');
		 if(temp=='\b'){
		    putchar(' ');
			REN=TI = 0;SBUF ='\b';
            while (!TI);TI = 0;
			REN=1;
		 }
		 if(temp=='B')
		    {printf("\r\ngoto run BOOTLOADER...\r\n");
		     printf("Please oprn XMODEM protocal to transmit the code!\r\n");
			 SCON=0x50;TMOD=0x20;TH1=TL1=0xfd;TR1=1;PCON&=~0x80;
		     reset=(BOOT)0xf000;
		     reset();
			}
		 if(temp=='P')
		    {printf("\r\n");
			 for(temp=0;temp!=32;temp++)
                 buf[temp]=temp;
             buf[1]=0xff;
			 if((flag=Write_Datasheet(writer,buf))==0)
			     {memset(buf,0,64);
			      Read_Datasheet(writer,buf,64);
			      writer+=32;
				  if(writer==0x40000){Delet_Datasheet();
				  writer=reader=0;
				  }
			      for(temp=0;temp!=64;temp++)
                     printf("buf[%d]-%#x ",(unsigned int)temp,(unsigned int)buf[temp]);
			      printf("\r\n");
				 }
			 else printf("Writer Error\r\n");
			}
		if(temp=='V')
		    {printf("\r\nStart Datasheet!\r\n");
			 goto begin;
			}
		if(temp=='C')
		    {printf("\r\nCancel Datasheet!\r\n");
			 if(writer-reader>=32)
			     {Cancel_Datasheet(reader);
			      Read_Datasheet(reader,buf,32);
			      for(temp=0;temp!=64;temp++)
                     printf("buf[%d]-%#x ",(unsigned int)temp,(unsigned int)buf[temp]);
			      printf("\r\n");
			      if(writer-reader>32)reader+=32;
				 }
			 else printf("No data can be canceled!\r\n");
			}
		}
	}
}