📄 flash.c
字号:
#include "dtm_v3.h"
#include "dtm.h"
#include "externdef.h"
#define FLASHPAGESIZE 64
_BYTE FlashWriteData(_BYTE cData);
_BYTE FlashReadData(void);
void FlashSendStartBit(void);
void FlashSendStopBit(void);
void FlashSendAckBit(void);
_BYTE FlashWritePage(_WORD wAddress,_BYTE cLength,_BYTE cChip,_BYTE *cpBuf);
_BYTE FlashReadPage(_WORD wAddress,_BYTE cLength,_BYTE cChip,_BYTE *cpBuf);
_BYTE FlashWriteBuf(_WORD wAddress,_WORD wLength,_BYTE cChip,_BYTE *cpBuf);
_BYTE FlashReadBuf(_WORD wAddress,_WORD wLength,_BYTE cChip,_BYTE *cpBuf);
_BYTE FlashInQueue(_BYTE *cpLogBuf);
_BYTE FlashOutQueue(_BYTE * cpLogBuf);
_BYTE FlashReadQueue(_WORD wIndex,_BYTE * cpLogBuf);
_BYTE FlashReadWriteQueuePoint(_BYTE *cpPointBuf,_BYTE cMode,_BYTE cType,_BYTE cChip);
_BYTE FlashRollBack(_BYTE cType,_WORD wCount);
_BYTE FlashCheckSpace(_WORD * wSpacs);
_BYTE FlashReadWriteDCB(_BYTE DCBNumber,struct StruDCB *spDCB,_BYTE cMode);
_BYTE FlashReadWriteSPB(struct StruSPB *spSPB,_BYTE cMode);
_BYTE FlashVerify(_BYTE *cpSourceBuf,_BYTE *cpTragetBuf,_WORD wLength);
_BYTE FlashReadWriteDAT(_BYTE *cpDATBuf,_BYTE cMode);
_BYTE FlashReadWriteKEYAREA(struct StruKEYAREA *spKEY,_BYTE cMode);
_BYTE FlashReadWriteCDTI(struct StruCDTI *spCDTI,_BYTE cMode);
_BYTE FlashReadWriteCSI(struct StruCSI *spCSI,_BYTE cMode);
_BYTE FlashReadWriteMB(_BYTE *cpMBBuf,_BYTE cIndex,_BYTE cMode);
/****************************************************************************
* 名称：FlashWriteData()
* 功能：向FlashC256发送一字节数据
* 参数：
* cData 要发送的数据
* 返回：
* 成功,返回C_OK, 否则返回错误码
* 说明：发送数据时，高位先发送。
****************************************************************************/
_BYTE FlashWriteData(_BYTE cData)
{
_WORD i;
PIO_OER = SDA; //* set SDA line as an output
for(i=0; i<8; i++) { // 发送8位数据
/* 设置PIO的DATA输出值 */
if( (cData&0x80)!=0)
PIO_SODR = SDA;
else
PIO_CODR = SDA;
cData <<= 1;
PIO_SODR = SCL; // SCL = 1
DelayMCK4(SPI_BASE_DELAY_TIME);
PIO_CODR = SCL; // SCL = 0
DelayMCK4(SPI_BASE_DELAY_TIME-2);
}
PIO_SODR = SDA;
PIO_ODR = SDA; //禁止SDA输出(为输入)
PIO_SODR = SCL; // SCL = 1
DelayMCK4(1);
for(i=0; i<0x900; i++){
if (( PIO_PDSR & SDA) == 0){
PIO_CODR = SCL; // SCL = 0
return(C_OK);
}
}
return(C_FLASHERR);
}
/****************************************************************************
* 名称：FlashReadData()
* 功能：FlashC256读一字节数据
* 返回：函数返回值为读取的数据
* 说明：发送数据时，高位先发送。
****************************************************************************/
_BYTE FlashReadData(void)
{
_BYTE i;
_BYTE cData;
PIO_ODR = SDA; //* set SDA line as an input
DelayMCK4(1);
for(i=0; i<8; i++) { // 发送8位数据
PIO_SODR = SCL; // SCL = 1
cData *= 2;
DelayMCK4(SPI_BASE_DELAY_TIME);
if( ( PIO_PDSR & SDA) == SDA )
cData++;
PIO_CODR = SCL; // SCL = 0
DelayMCK4(SPI_BASE_DELAY_TIME);
}
return(cData);
}
/****************************************************************************
* 名称：FlashSendStartBit()
* 功能：读写FLASH时发送起始位
****************************************************************************/
void FlashSendStartBit(void) /*起始*/
{
PIO_PER = (SDA | SCL);
PIO_OER = SDA;
PIO_OER = SCL;
PIO_SODR = SDA;
PIO_SODR = SCL;
DelayMCK4(SPI_BASE_DELAY_TIME);
PIO_CODR = SDA;
DelayMCK4(SPI_BASE_DELAY_TIME);
PIO_CODR = SCL;
}
/****************************************************************************
* 名称：FlashSendStartBit()
* 功能：读写FLASH时发送终止位
****************************************************************************/
void FlashSendStopBit(void)
{
PIO_OER = SDA;
PIO_CODR = SDA;
PIO_SODR = SCL;
DelayMCK4(SPI_BASE_DELAY_TIME);
PIO_SODR = SDA;
}
/****************************************************************************
* 名称：FlashSendAckBit()
* 功能：读写FLASH时发送应答位
****************************************************************************/
void FlashSendAckBit(void)
{
PIO_OER = SDA;
PIO_CODR = SDA;
PIO_SODR = SCL;
DelayMCK4(SPI_BASE_DELAY_TIME);
PIO_CODR = SCL;
}
/***************************************************************
* 函数: FlashWritePage
* 功能: 把BUF中的数据写入EEPROM
* 参数: wAddress: 拟写入数据在Flash的起始地址
* cLength: 拟写入数据的长度
* cpBuf: 拟写入FLASh中的数据,不超过64个字节
* cChip: 选择片0还是片1
***************************************************************/
_BYTE FlashWritePage (_WORD wAddress,_BYTE cLength,_BYTE cChip,_BYTE *cpBuf)
{
_BYTE j,cRetCode;
FlashSendStartBit();
DelayMCK4(SPI_BASE_DELAY_TIME);
if(cChip==0)
cRetCode=FlashWriteData(0xa0);
else
cRetCode=FlashWriteData(0xa6);
if(cRetCode!=C_OK) {
FlashSendStopBit();
return(cRetCode);
}
j = (_BYTE)(wAddress>>8);
FlashWriteData(j);
if(cRetCode!=C_OK) {
FlashSendStopBit ();
return(cRetCode);
}
j = (_BYTE) (wAddress);
FlashWriteData(j);
if(cRetCode!=C_OK) {
FlashSendStopBit ();
return(cRetCode);
}
for(j=0;j<cLength;j++) {
cRetCode= FlashWriteData(*(cpBuf+j));
if(cRetCode!=C_OK) {
FlashSendStopBit();
return(cRetCode);
}
}
FlashSendStopBit();
return(C_OK);
}
/*********************************************************
* 函数: FlashReadPage
* 功能: 从EEPROM中读取数据到BUF中
* 参数: wAddress: 拟读取数据在Flash的起始地址
* cLength: 拟读取数据的长度
* cpBuf: 存放读取数据的缓冲区,不超过64个字节
* cChip: 选择片0还是片1
**********************************************************/
_BYTE FlashReadPage(_WORD wAddress,_BYTE cLength,_BYTE cChip,_BYTE *cpBuf)
{
_BYTE j,cRetCode;
FlashSendStartBit();
DelayMCK4(SPI_BASE_DELAY_TIME);
if(cChip==0)
cRetCode=FlashWriteData(0xa0); // 写芯片地址
else
cRetCode=FlashWriteData(0xa6);
if(cRetCode!=C_OK) {
FlashSendStopBit();
return(cRetCode);
}
j=(_BYTE) (wAddress>>8); // 写Flash地址,高位
cRetCode = FlashWriteData(j);
if(cRetCode!=C_OK) {
FlashSendStopBit();
return(cRetCode);
}
j=(_BYTE) (wAddress); // 写Flash地址,低位
cRetCode = FlashWriteData(j);
if(cRetCode!=C_OK) {
FlashSendStopBit();
return(cRetCode);
}
FlashSendStartBit(); // 发送起始位
if(cChip==0)
cRetCode=FlashWriteData(0xa1);
else
cRetCode=FlashWriteData(0xa7);
if(cRetCode!=C_OK) {
FlashSendStopBit ();
return(cRetCode);
}
*(cpBuf)=(FlashReadData());
if(cLength>1){
FlashSendAckBit ();
for(j=1;j<cLength-1;j++){
*(cpBuf+j)=(FlashReadData());
FlashSendAckBit();
}
*(cpBuf+cLength-1)=(FlashReadData ());
}
FlashSendStopBit();
return(C_OK);
}
/***************************************************************
* 函数: FlashWriteBuf
* 功能: 把BUF中的数据写入EEPROM
* 参数: wAddress: 拟写入数据在Flash的起始地址
* cLength: 拟写入数据的长度
* cpBuf: 拟写入FLASh中的数据
* cChip: 选择片0还是片1
***************************************************************/
_BYTE FlashWriteBuf(_WORD wAddress,_WORD wLength,_BYTE cChip,_BYTE *cpBuf)
{
_BYTE cLength,cAddL,cRetCode;
_WORD wAdd,wCurLen;
wAdd=wAddress;
wCurLen = 0;
while (wCurLen<wLength) {
if ((wAdd&0x003f)==0) { // 一页的起始
cLength = (_BYTE)((wCurLen+FLASHPAGESIZE>=wLength)?wLength-wCurLen:FLASHPAGESIZE);
}
else { // 一页的中间
cAddL = (_BYTE)(wAdd&0x3f);
cLength = FLASHPAGESIZE - cAddL; // 本页剩余字节的长度
if (wCurLen + cLength >wLength) { // 剩余字节长度不够
cLength = (_BYTE)(wLength - wCurLen);
}
}
cRetCode = FlashWritePage(wAdd,cLength,cChip,cpBuf);
DelayMCK4(5000*SPI_BASE_DELAY_TIME);
if (cRetCode!=C_OK) return(cRetCode);
wAdd += cLength;
wCurLen += cLength;
cpBuf += cLength;
}
return(C_OK);
}
/***************************************************************
* 函数: FlashReadBuf
* 功能: 把EEPROM的数据写到BUF中
* 参数: wAddress: 拟写入数据在Flash的起始地址
* cLength: 拟写入数据的长度
* cpBuf: 拟写入BUF中的数据
* cChip: 选择片0还是片1
***************************************************************/
_BYTE FlashReadBuf(_WORD wAddress,_WORD wLength,_BYTE cChip,_BYTE *cpBuf)
{
_BYTE cLength,cAddL,cRetCode;
_WORD wAdd,wCurLen;
wAdd=wAddress;
wCurLen = 0;
while (wCurLen<wLength) {
if ((wAdd&0x003f)==0) { // 一页的起始
cLength = (_BYTE)((wCurLen+FLASHPAGESIZE>=wLength)?wLength-wCurLen:FLASHPAGESIZE);
}
else { // 一页的中间
cAddL = (_BYTE)(wAdd&0x3f);
cLength = FLASHPAGESIZE - cAddL; // 本页剩余字节的长度
if (wCurLen + cLength >wLength) { // 剩余字节长度不够
cLength = (_BYTE)(wLength - wCurLen);
}
}
cRetCode = FlashReadPage(wAdd,cLength,cChip,cpBuf);
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -