📄 大容量串行false45db081 c51读写源程序.c
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sfr16 ADC0GT = 0xc4; // ADC0 greater than window
sfr16 ADC0LT = 0xc6; // ADC0 less than window
sfr16 RCAP2 = 0xca; // Timer2 capture/reload
sfr16 T2 = 0xcc; // Timer2
sfr16 DAC0 = 0xd2; // DAC0 data
sfr16 DAC1 = 0xd5; // DAC1 data
unsigned int Count1msInc;
void SYSCLK_Init (void);
void PORT_Init (void);
void SPI0_Init (void);
void Timer0_Init (void);
void main (void) {
unsigned char xdata MyBuff[1000];
unsigned char xdata MyBuff1[1000];
unsigned int i,j;
WDTCN = 0xde; // disable watchdog timer
WDTCN = 0xad;
SYSCLK_Init (); // initialize oscillator
Timer0_Init();
PORT_Init (); // initialize crossbar and GPIO
EA=1;
DF_RESET;
SPI0_Init (); // initialize SPI0
RAM_CHIP_SELECT_BANK0;
EMI0CF = 0x2F;
i=1;
if (i)
{
Count1msInc=0;
ErasingDataFlash(); //整片擦除
Count1msInc=0;
for (i=0;i<2;i++)
{
AT450XXPageAddr=i;
for (j=0;j<255;j++)
{
MyBuff[j]=j+i;
}
if (i%2)
FlashAutoProgViaBuffer1
(0,264,MyBuff); //将指定数据通过缓存1写入Flash指定位置(先擦除)
else
FlashAutoProgViaBuffer2
(0,264,MyBuff); //将指定数据通过缓存2写入Flash指定位置(先擦除)
}
/* for(i=0;i<520;i++)
{ if(i<260)
MyBuff[i]=0x00;
else
MyBuff[i]=0x01;
}*/
AT450XXPageAddr=0;
FlashBuffer1Write(20,14,"1234567890UUAA");
FlashBuffer1Read(0,260,MyBuff1);
FlashBuffer1Write(20,14,"1234567890UUAA");
FlashBuffer1Read(20,14,MyBuff); //在此处设置断点,观察
MyBuff的内容
FlashBuffer1ProgNoErase();
PageToBuffer2();
FlashBuffer2Read(20,14,MyBuff);
Count1msInc=0;
FlashBuffer2Read(100,14,MyBuff);
Count1msInc=0;
FlashBuffer1Write(20,14,"1234567890UUAA");
Count1msInc=0;
FlashBuffer1Read(100,14,MyBuff);
Count1msInc=0;
FlashBuffer1ProgNoErase();
Count1msInc=0;
PageToBuffer2();
Count1msInc=0;
FlashBuffer2Read(100,14,MyBuff);
FlashProgViaBuffer1(100,14,MyBuff);
ErasingDataFlash();
EraseFlashPage();
FlashBuffer1Read(1,1, MyBuff); //从缓冲区1的指定位置(0-
263)中读入指定字节
FlashBuffer2Read(1,1,MyBuff); //从缓冲区2的指定位置(0-263)
中读入指定字节
FlashBuffer1Write(1,1,"!");
FlashBuffer2Write(1,1,"1");
GetFlashStatus();
PageToBuffer1();
PageToBuffer2();
FlashBuffer1ProgNoErase();
FlashBuffer2ProgNoErase();
FlashBuffer1ProgAutoErase();
FlashBuffer2ProgAutoErase();
FlashProgViaBuffer1(1,1, MyBuff);
FlashProgViaBuffer2(1,1, MyBuff);
FlashAutoProgViaBuffer1(1,1, MyBuff);
FlashAutoProgViaBuffer2(1,1, MyBuff);
}
xxx: goto xxx;
}
void SYSCLK_Init (void)
{
int i; // delay counter
OSCXCN = 0x67; // start external oscillator with
// 11.0592MHz crystal
for (i=0; i < 256; i++) ; // Wait for osc. to start up
while (!(OSCXCN & 0x80)) ; // Wait for crystal osc. to settle
OSCICN = 0x88; // select external oscillator as SYSCLK
// source and enable missing clock
}
void PORT_Init (void)
{
XBR0 = 0x07; // Enable SMBus, SPI0, and UART0
XBR1 = 0x00;
XBR2 = 0x44; // Enable crossbar and weak pull-ups
EMI0TC = 0x21;
P74OUT = 0x0F;
P0MDOUT = 0x15;
}
void SPI0_Init (void)
{
SPI0CFG = 0x07; // data sampled on 1st SCK rising edge
// 8-bit data words
SPI0CFG|=0xC0;//CKPOL =1;
SPI0CN = 0x03; // Master mode; SPI enabled; flags
// cleared
SPI0CKR = SYSCLK/2/2000000-1; // SPI clock <= 8MHz (limited by
// EEPROM spec.)
}
void Timer0_Init (void)
{
CKCON|=0x8;
TMOD|=0x1; //16Bit
TR0 = 0; // STOP Timer0
TH0 = (-SYSCLK/1000) >> 8; // set Timer0 to overflow
in 1ms
TL0 = -SYSCLK/1000;
TR0 = 1; // START Timer0
IE|= 0x2;
}
void Timer0_ISR (void) interrupt 1 //1ms
{
TH0 = (-SYSCLK/1000) >> 8;
TL0 = -SYSCLK/1000;
Count1msInc++;
}
在给你一个(23294字)龙路[20次]2004-5-20 14:32:22
#include <reg51.h>
#include <intrins.h>
#include <lcd1602.h>
#define uchar unsigned char
#define uint unsigned int
sbit FLASH_CS=P1^7;
sbit FLASH_SCK=P1^6;
sbit FLASH_SI=P1^5;
sbit FLASH_SO=P1^4;
sbit a0 = ACC^0;
sbit a1 = ACC^1;
sbit a2 = ACC^2;
sbit a3 = ACC^3;
sbit a4 = ACC^4;
sbit a5 = ACC^5;
sbit a6 = ACC^6;
sbit a7 = ACC^7;
uchar c,i;
uchar buf1[8],buf2[8];
void DelayNMs(uint n) //延时 Nms
{ uchar data ii;
while(n--){ ii=100;while(ii--); }
}
void ICOutPage(uint Page) /*发送页面地址*/
{
ACC = (uchar)(Page>>8);
FLASH_SI = a2; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a1; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a0; FLASH_SCK = 0; FLASH_SCK = 1;
ACC = (uchar)(Page%0xff);
FLASH_SI = a7; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a6; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a5; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a4; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a3; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a2; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a1; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a0; FLASH_SCK = 0; FLASH_SCK = 1;
}
void ICOutAddr(uint ByteAddr) /*发送字节地址*/
{
ACC = (uchar)(ByteAddr>>8);
FLASH_SI = a0; FLASH_SCK = 0; FLASH_SCK = 1;
ACC = (uchar)(ByteAddr%0xff);
FLASH_SI = a7; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a6; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a5; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a4; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a3; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a2; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a1; FLASH_SCK = 0; FLASH_SCK = 1;
FLASH_SI = a0; FLASH_SCK = 0; FLASH_SCK = 1;
}
void ICOutXBits(uchar N) /*发送N个任意字符*/
{
FLASH_SI = 0;
while (N>0)
{
FLASH_SCK = 0;
FLASH_SCK = 1;
N--;
}
}
//---------------------------------------------------
void ICWriteByte(uchar b) /*连续写下一个字节*/
{
ACC = b;
FLASH_SI = a7; FLASH_SCK = 1;
FLASH_SCK = 0;
FLASH_SI = a6; FLASH_SCK = 1;
FLASH_SCK = 0;
FLASH_SI = a5; FLASH_SCK = 1;
FLASH_SCK = 0;
FLASH_SI = a4; FLASH_SCK = 1;
FLASH_SCK = 0;
FLASH_SI = a3; FLASH_SCK = 1;
FLASH_SCK = 0;
FLASH_SCK = 0;
FLASH_SI = a2; FLASH_SCK = 1;
FLASH_SCK = 0;
FLASH_SI = a1; FLASH_SCK = 1;
FLASH_SCK = 0;
FLASH_SI = a0; FLASH_SCK = 1;
FLASH_SCK = 0;
}
//---------------------------------------------------
uchar ICReadByte() /*连续读下一个字节*/
{
FLASH_SCK = 1;FLASH_SCK = 0; FLASH_SO = a7;
FLASH_SCK = 1;FLASH_SCK = 0; FLASH_SO = a6;
FLASH_SCK = 1;FLASH_SCK = 0; FLASH_SO = a5;
FLASH_SCK = 1;FLASH_SCK = 0; FLASH_SO = a4;
FLASH_SCK = 1;FLASH_SCK = 0; FLASH_SO = a3;
FLASH_SCK = 1;FLASH_SCK = 0; FLASH_SO = a2;
FLASH_SCK = 1;FLASH_SCK = 0; FLASH_SO = a1;
FLASH_SCK = 1;FLASH_SCK = 0; FLASH_SO = a0;
return (ACC);
}
uchar ICStatus() //读状态寄存器
{
uchar d;
ICWriteByte(0x57);
d=ICReadByte();
FLASH_CS=1;
return(d);
}
//---------------------------------------------------
void ICWaitReady() /*等待IC卡准备好*/
{
uchar c;
while (1)
{
c = ICStatus();
if (c&0x80) break;
}
}
//主存贮器页读，不通过缓冲器
void Flash_Read(uint start_page,uint start_addr,uint len, uchar *buf)
{
FLASH_CS=0;
ICWriteByte(0x52);
ICOutXBits(4);
ICOutPage(start_page);
ICOutAddr(start_addr);
ICOutXBits(32);
ICReadByte();
while(len--) { *buf=ICReadByte(); buf++; }
FLASH_CS=1;
}
//写buf中的数据到start_page页的start_addr开始的地址
void Flash_Write(uint start_page,uint start_addr,uint len,uchar *buf)
{
FLASH_CS=0;
ICWriteByte(0x82);
ICOutXBits(4);
ICOutPage(start_page);
ICOutAddr(start_addr);
while(len--) { ICWriteByte(*buf); buf++; }
FLASH_CS=1;
DelayNMs(10);
}
void IC_Init()
{
FLASH_CS=1;
FLASH_SI=1;
FLASH_SO=1;
FLASH_SCK=0;
}
void main()
{
i=0;
LcdReset();
IC_Init();
while(1)
{
for(i=0;i<8;i++) { buf1[i]='A'+i; buf2[i]='a'+i; }
Flash_Write(0,0,8,buf1);
ShowMessage(0,0,buf1);
Flash_Read(0,0,8,buf2);
Delay1Ms(500);
}
}
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