/* begin_addr,被写数据Flash开始地址；counter,连续写多少个字节； array[]，数据来源 */
BYTE sequential_write_flash_in_one_sector(WORD begin_addr, WORD counter, BYTE array[])
{
WORD i = 0;
WORD in_sector_begin_addr = 0;
WORD sector_addr = 0;
/* 判是否是有效范围,此函数不允许跨扇区操作 */
if(counter > USED_BYTE_QTY_IN_ONE_SECTOR)
return ERROR;
in_sector_begin_addr = begin_addr & 0x01ff;
if((in_sector_begin_addr + counter) > USED_BYTE_QTY_IN_ONE_SECTOR)
return ERROR;
/* 擦除 要修改/写入 的扇区 */
IapEraseSector(begin_addr);
for(i=0; i<counter; i++)
{
/* 写一个字节 */
IapProgramByte(begin_addr, array[i]);
/* 比较对错 */
if (IapReadByte(begin_addr) != array[i])
{
IapIdle();
return ERROR;
}
begin_addr++;
}
IapIdle();
return OK;
}
/* begin_addr,被写数据Flash开始地址；counter,连续写多少个字节； array[]，数据来源 */
BYTE write_flash_with_protect_in_one_sector(WORD begin_addr, WORD counter, BYTE array[])
{
WORD i = 0;
WORD in_sector_begin_addr = 0;
WORD sector_addr = 0;
WORD byte_addr = 0;
/* 判是否是有效范围,此函数不允许跨扇区操作 */
if(counter > USED_BYTE_QTY_IN_ONE_SECTOR)
return ERROR;
in_sector_begin_addr = begin_addr & 0x01ff;
/* 假定从扇区的第0个字节开始，到USED_BYTE_QTY_IN_ONE_SECTOR-1个字节结束,后面部分不用,程序易编写 */
if((in_sector_begin_addr + counter) > USED_BYTE_QTY_IN_ONE_SECTOR)
return ERROR;
/* 将该扇区数据 0 - (USED_BYTE_QTY_IN_ONE_SECTOR-1) 字节数据读入缓冲区保护 */
sector_addr = (begin_addr & 0xfe00);
byte_addr = sector_addr;
for(i = 0; i < USED_BYTE_QTY_IN_ONE_SECTOR; i++)
{
protect_buffer[i] = IapReadByte(byte_addr++);
}
/* 将要写入的数据写入保护缓冲区的相应区域,其余部分保留 */
for(i = 0; i < counter; i++)
{
protect_buffer[in_sector_begin_addr++] = array[i];
}
/* 擦除 要修改/写入 的扇区 */
IapEraseSector(sector_addr);
/* 将保护缓冲区的数据写入 Data Flash, EEPROM */
byte_addr = sector_addr;
for(i = 0; i< USED_BYTE_QTY_IN_ONE_SECTOR; i++)
{
/* 写一个字节 */
IapProgramByte(byte_addr, protect_buffer[i]);
/* 比较对错 */
if (IapReadByte(begin_addr) != protect_buffer[i])
{
IapIdle();
return ERROR;
}
byte_addr++;
}
IapIdle();
return OK;
}
void IapEraseSector(WORD addr)
{
IAP_CONTR = ENABLE_IAP; //ʹ��IAP
IAP_CMD = CMD_ERASE; //����IAP����
IAP_ADDRL = addr; //����IAP�͵�ַ
IAP_ADDRH = addr >> 8; //����IAP�ߵ�ַ
IAP_TRIG = 0x5a; //�������(0x5a)
IAP_TRIG = 0xa5; //�������(0xa5)
_nop_(); //�ȴ�ISP/IAP/EEPROM�������
IapIdle();
}
/*----------------------------
Erase one sector area
Input: addr (ISP/IAP/EEPROM address)
Output:-
----------------------------*/
void IapEraseSector(WORD addr)
{
IAP_CONTR = ENABLE_IAP; //Open IAP function, and set wait time
IAP_CMD = CMD_ERASE; //Set ISP/IAP/EEPROM ERASE command
IAP_ADDRL = addr; //Set ISP/IAP/EEPROM address low
IAP_ADDRH = addr >> 8; //Set ISP/IAP/EEPROM address high
IAP_TRIG = 0x5a; //Send trigger command1 (0x5a)
IAP_TRIG = 0xa5; //Send trigger command2 (0xa5)
_nop_(); //MCU will hold here until ISP/IAP/EEPROM operation complete
IapIdle();
}
void IapEraseSector(unsigned int addr) //扇区擦除
{
IAP_CONTR = ENABLE_IAP;
IAP_CMD = CMD_ERASE;
IAP_ADDRL = addr;
IAP_ADDRH = addr >> 8;
IAP_TRIG = 0x5a;
IAP_TRIG = 0xa5;
_nop_();
IapIdle();
}
/*----------------------------
扇区擦除
----------------------------*/
void IapEraseSector(unsigned int addr)
{
IAP_CONTR = ENABLE_IAP; //使能IAP
IAP_CMD = CMD_ERASE; //设置IAP命令
IAP_ADDRL = addr; //设置IAP低地址
IAP_ADDRH = addr >> 8; //设置IAP高地址
IAP_TRIG = 0x5a; //写触发命令(0x5a)
IAP_TRIG = 0xa5; //写触发命令(0xa5)
_nop_(); //等待ISP/IAP/EEPROM操作完成
IapIdle();
}
/*----------------------------
写一字节数据到ISP/IAP/EEPROM区域
----------------------------*/
void IapProgramByte(unsigned int addr, unsigned char dat)
{
IAP_CONTR = ENABLE_IAP; //使能IAP
IAP_CMD = CMD_PROGRAM; //设置IAP命令
IAP_ADDRL = addr; //设置IAP低地址
IAP_ADDRH = addr >> 8; //设置IAP高地址
IAP_DATA = dat; //写ISP/IAP/EEPROM数据
IAP_TRIG = 0x5a; //写触发命令(0x5a)
IAP_TRIG = 0xa5; //写触发命令(0xa5)
_nop_(); //等待ISP/IAP/EEPROM操作完成
IapIdle();
}
void IapProgramByte(unsigned int addr, unsigned char dat) //写入1字节
{
IAP_CONTR = ENABLE_IAP;
IAP_CMD = CMD_PROGRAM;
IAP_ADDRL = addr;
IAP_ADDRH = addr >> 8;
IAP_DATA = dat;
IAP_TRIG = 0x5a;
IAP_TRIG = 0xa5;
_nop_();
IapIdle();
}
/*----------------------------
Program one byte to ISP/IAP/EEPROM area
Input: addr (ISP/IAP/EEPROM address)
dat (ISP/IAP/EEPROM data)
Output:-
----------------------------*/
void IapProgramByte(WORD addr, BYTE dat)
{
IAP_CONTR = ENABLE_IAP; //Open IAP function, and set wait time
IAP_CMD = CMD_PROGRAM; //Set ISP/IAP/EEPROM PROGRAM command
IAP_ADDRL = addr; //Set ISP/IAP/EEPROM address low
IAP_ADDRH = addr >> 8; //Set ISP/IAP/EEPROM address high
IAP_DATA = dat; //Write ISP/IAP/EEPROM data
IAP_TRIG = 0x5a; //Send trigger command1 (0x5a)
IAP_TRIG = 0xa5; //Send trigger command2 (0xa5)
_nop_(); //MCU will hold here until ISP/IAP/EEPROM operation complete
IapIdle();
}
void IapProgramByte(WORD addr, BYTE dat)
{
IAP_CONTR = ENABLE_IAP; //ʹ��IAP
IAP_CMD = CMD_PROGRAM; //����IAP����
IAP_ADDRL = addr; //����IAP�͵�ַ
IAP_ADDRH = addr >> 8; //����IAP�ߵ�ַ
IAP_DATA = dat; //дISP/IAP/EEPROM����
IAP_TRIG = 0x5a; //�������(0x5a)
IAP_TRIG = 0xa5; //�������(0xa5)
_nop_(); //�ȴ�ISP/IAP/EEPROM�������
IapIdle();
}
void IapEraseSector(WORD addr)
{
IAP_CONTR = ENABLE_IAP;
IAP_CMD = CMD_ERASE;
IAP_ADDRL = addr;
IAP_ADDRH = addr >> 8;
IAP_TRIG = 0x5a;
IAP_TRIG = 0xa5;
_nop_();
//operation complete
IapIdle();
}
void IapProgramByte(WORD addr, BYTE dat)
{
IAP_CONTR = ENABLE_IAP;
IAP_CMD = CMD_PROGRAM;
IAP_ADDRL = addr;
IAP_ADDRH = addr >> 8;
IAP_DATA = dat;
IAP_TRIG = 0x5a;
IAP_TRIG = 0xa5;
_nop_();
IapIdle();
}
unsigned char IapReadByte(unsigned int addr) //读取1字节
{
unsigned char dat;
IAP_CONTR = ENABLE_IAP;
IAP_CMD = CMD_READ;
IAP_ADDRL = addr;
IAP_ADDRH = addr >> 8;
IAP_TRIG = 0x5a;
IAP_TRIG = 0xa5;
_nop_();
dat = IAP_DATA;
IapIdle();
return dat;
}
BYTE IapReadByte(WORD addr)
{
BYTE dat;
IAP_CONTR = ENABLE_IAP;
IAP_CMD = CMD_READ;
IAP_ADDRL = addr;
IAP_ADDRH = addr >> 8;
IAP_TRIG = 0x5a;
IAP_TRIG = 0xa5;
_nop_();
dat = IAP_DATA;
IapIdle();
return dat;
}
/*----------------------------
Read one byte from ISP/IAP/EEPROM area
Input: addr (ISP/IAP/EEPROM address)
Output:Flash data
----------------------------*/
BYTE IapReadByte(WORD addr)
{
xdata BYTE dat; //Data buffer
IAP_CONTR = ENABLE_IAP; //Open IAP function, and set wait time
IAP_CMD = CMD_READ; //Set ISP/IAP/EEPROM READ command
IAP_ADDRL = addr; //Set ISP/IAP/EEPROM address low
IAP_ADDRH = addr >> 8; //Set ISP/IAP/EEPROM address high
IAP_TRIG = 0x5a; //Send trigger command1 (0x5a)
IAP_TRIG = 0xa5; //Send trigger command2 (0xa5)
_nop_(); //MCU will hold here until ISP/IAP/EEPROM operation complete
dat = IAP_DATA; //Read ISP/IAP/EEPROM data
IapIdle(); //Close ISP/IAP/EEPROM function
return dat; //Return Flash data
}
BYTE IapReadByte(WORD addr)
{
BYTE dat; //���ݻ�����
IAP_CONTR = ENABLE_IAP; //ʹ��IAP
IAP_CMD = CMD_READ; //����IAP����
IAP_ADDRL = addr; //����IAP�͵�ַ
IAP_ADDRH = addr >> 8; //����IAP�ߵ�ַ
IAP_TRIG = 0x5a; //�������(0x5a)
IAP_TRIG = 0xa5; //�������(0xa5)
_nop_(); //�ȴ�ISP/IAP/EEPROM�������
dat = IAP_DATA; //��ISP/IAP/EEPROM����
IapIdle(); //�ر�IAP����
return dat; //����
}
/*----------------------------
从ISP/IAP/EEPROM区域读取一字节
----------------------------*/
unsigned char IapReadByte(unsigned int addr)
{
unsigned char dat; //数据缓冲区
IAP_CONTR = ENABLE_IAP; //使能IAP
IAP_CMD = CMD_READ; //设置IAP命令
IAP_ADDRL = addr; //设置IAP低地址
IAP_ADDRH = addr >> 8; //设置IAP高地址
IAP_TRIG = 0x5a; //写触发命令(0x5a)
IAP_TRIG = 0xa5; //写触发命令(0xa5)
_nop_(); //等待ISP/IAP/EEPROM操作完成
dat = IAP_DATA; //读ISP/IAP/EEPROM数据
IapIdle(); //关闭IAP功能
return dat; //返回
}
