# include & ltintrins.h & gt
/* The following registers are used to configure the STC microcontroller */
/* Relevant information starts from page 35 of STC89C5 1RC PDF */
sfr ISP _ DATA = 0xE2
sfr ISP _ ADDRH = 0xE3
sfr ISP _ ADDRL = 0xE4
sfr ISP _ CMD = 0xE5
sfr ISP _ TRIG = 0xE6
sfr ISP _ CONTR = 0xE7
# Define uint unsigned integer
# Define uchar unsigned characters
# Define ISP _ byte _ read1/ISP byte reading.
# Define ISP _ byte _ program2//ISP direct programming
# Define ISP _ sector _ erase3//ISP Sector Erase
Uchar code table [10] = {0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f }；;
/********************************************************************
* Name: Delay ()
* function: delay, the delay time is 10ms * del.
* input: del
* Output: None
***********************************************************************/
Invalid delay _ 1 ms (uint i)
{
uchar x，j；
for(j = 0； J< me; j++)
for(x = 0； x & lt= 148; x++)；
}
/********************************************************************
* Name: ISP_ERASE ()
* Function: Erase EEPROM sector.
* Input: Address (address of erased sector)
* Output: None
***********************************************************************/
Void ISP_ERASE (address)
{
ISP_ADDRL = address;
ISP _ ADDRH = Address & gt& gt8;
ISP _ CONTR = 0x 8 1；
ISP _ CMD = ISP _ SECTOR _ ERASE
ISP_TRIG = 0x46//The PDF manual says to write 0x46 in ISP _ trig first, and then 0xb9.
ISP _ TRIG = 0xb9
_ nop _()；
_ nop _()；
}
/********************************************************************
* Name: ISP_READ ()
* Function: Read the value from the corresponding address of EEPROM.
* input: address (address to read EEPROM)
* output: Read_Data (value read from EEPROM)
*********************************************************************/
Uint ISP_READ (address)
{
uchar Read _ Data
ISP_ADDRL = address;
ISP _ ADDRH = Address & gt& gt8;
EA = 0；
ISP _ CONTR = 0x 8 1；
ISP _ CMD = ISP _ BYTE _ READ
ISP _ TRIG = 0x46
ISP _ TRIG = 0xb9
_ nop _()；
_ nop _()；
Read _ Data = ISP _ DATA
Return Read _ Data
}
/********************************************************************
* Name: ISP_PROGRAM ()
* Function: realize byte programming of EEPROM.
* Input: Address is the programmed address, and Data_temp is the value to be programmed.
* Output: None
***********************************************************************/
Void ISP_PROGRAM (address, data _ temporary)
{
ISP _ DATA = Data _ temp
ISP_ADDRL = address;
ISP _ ADDRH = Address & gt& gt8;
ISP _ CONTR = 0x 8 1；
ISP _ CMD = ISP _ BYTE _ PROGRAM
ISP _ TRIG = 0x46
ISP _ TRIG = 0xb9
_ nop _()；
_ nop _()；
}
/********************************************************************
* Name: Main ()
* Function: Main function
* Input: None
* Output: None
***********************************************************************/
void Main()
{
uint I；
uchar LED _ Buffer = 0；
while( 1)
{
for(I = 0； I & lt50; i++)
{
LED _ Buffer = ISP _ READ(0x2c 00)；
P0 = table[LED _ Buffer % 10]；
P2 = 1；
delay _ 1 ms(6)；
P0 = table[LED _ Buffer/ 10% 10]；
P2 = 0；
delay _ 1 ms(6)；
}
LED _ buffer++；
ISP _ ERASE(0x2c 00)； //Note: The whole sector must be erased before byte programming.
ISP_PROGRAM(0x2c00，LED _ Buffer)；
}
}