uart-edit-EEPROM.zip_EEPROM 数据_STC12C5204AD_stc12c5204ad EEPROM_

#include "data_type.h" #include "STC12C5204AD.h" #include "intrins.h" /*Define ISP/IAP/EEPROM operation const for IAP_CONTR*/ #define ENABLE_IAP_1 0x80 //if SYSCLK<30MHz #define ENABLE_IAP_2 0x81 //if SYSCLK<24MHz #define ENABLE_IAP_3 0x82 //if SYSCLK<20MHz #define ENABLE_IAP_4 0x83 //if SYSCLK<12MHz #define ENABLE_IAP_5 0x84 //if SYSCLK<6MHz #define ENABLE_IAP_6 0x85 //if SYSCLK<3MHz #define ENABLE_IAP_7 0x86 //if SYSCLK<2MHz #define ENABLE_IAP_8 0x87 //if SYSCLK<1MHz #define ENABLE_IAP ENABLE_IAP_4 //系统晶振为11.0592MHz /*Define ISP/IAP/EEPROM command*/ #define CMD_IDLE 0 //Stand-By #define CMD_READ 1 //Byte-Read #define CMD_PROGRAM 2 //Byte-Program #define CMD_ERASE 3 //Sector-Erase /*---------------------------- Disable ISP/IAP/EEPROM function Make MCU in a safe state ----------------------------*/ void IapIdle() { IAP_CONTR = 0; //Close IAP function IAP_CMD = 0; //Clear command to standby IAP_TRIG = 0; //Clear trigger register IAP_ADDRH = 0x80; //Data ptr point to non-EEPROM area IAP_ADDRL = 0; //Clear IAP address to prevent misuse } /*---------------------------- Read one byte from ISP/IAP/EEPROM area Input: addr (ISP/IAP/EEPROM address) Output:Flash data ----------------------------*/ UINT8 IapReadByte(UINT16 addr) { uchar 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 } void IapProgramByte(UINT16 addr, UINT8 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(); } /*---------------------------- Erase one sector area Input: addr (ISP/IAP/EEPROM address) Output:- ----------------------------*/ void IapEraseSector(UINT16 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(); }