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/* --- STC International Limited ---------------- */ /* --- 宏晶科技 姚永平 设计 2004/9/11 V1.0 --- */ /* --- 宏晶科技 姚永平 设计 2004/12/4 V2.0 --- */ /* --- RD+/RC系列 Flash IAP/ISP Operation ----- */ /* --- STC89C54RD+, STC89C58RD+, --- */ /* --- STC89LE54RD+,STC89LE58RD+, -- */ /* --- STC89C51RC, STC89C52RC, ----- */ /* --- STC89LE51RC, STC89LE52RC, ---- */ /* --- Mobile: 13922805190 ---------------------- */ /* --- Fax: 0755-82944243 ----------------------- */ /* --- Tel: 0755-82908285 ----------------------- */ /* --- Web : www.mcu-memory.com ---------------- */ /* --- 感谢网友2004/12/3的指正,送样品以示感谢 --- */ #include <reg52.h> #include <intrins.h> /* use _nop_() function */ //sfr16 DPTR = 0x82; /* 新增特殊功能寄存器定义 */ sfr ISP_DATA = 0xe2; sfr ISP_ADDRH = 0xe3; sfr ISP_ADDRL = 0xe4; sfr ISP_CMD = 0xe5; sfr ISP_TRIG = 0xe6; sfr ISP_CONTR = 0xe7; /* 定义命令 */ #define READ_AP_and_Data_Memory_Command 0x01 /* 字节读数据存储区 */ #define PROGRAM_AP_and_Data_Memory_Command 0x02 /* 字节编程数据存储区 */ #define SECTOR_ERASE_AP_and_Data_Memory_Command 0x03 /* 扇区擦除数据存储区 */ typedef unsigned char INT8U; /* 8 bit 无符号整型 */ typedef unsigned int INT16U; /* 16 bit 无符号整型 */ #define DELAY_CONST 60000 /* 定义常量 */ #define ERROR 0 #define OK 1 sbit Begin_LED = P1^0; sbit ERROR_LED = P1^3; sbit OK_LED = P1^7; /* 定义Flash 操作等待时间 */ #define MCU_CLOCK_40MHz //#define MCU_CLOCK_20MHz //#define MCU_CLOCK_10MHz //#define MCU_CLOCK_5MHz #ifdef MCU_CLOCK_40MHz #define WAIT_TIME 0x00 #endif #ifdef MCU_CLOCK_20MHz #define WAIT_TIME 0x01 #endif #ifdef MCU_CLOCK_10MHz #define WAIT_TIME 0x02 #endif #ifdef MCU_CLOCK_5MHz #define WAIT_TIME 0x03 #endif /* 调试控制项 */ //#define DEBUG_STC89C_LE58RD+ #define DEBUG_STC89C_LE52RC //#define USED_BYTE_QTY_IN_ONE_SECTOR 1 //#define USED_BYTE_QTY_IN_ONE_SECTOR 2 //#define USED_BYTE_QTY_IN_ONE_SECTOR 4 //#define USED_BYTE_QTY_IN_ONE_SECTOR 8 //#define USED_BYTE_QTY_IN_ONE_SECTOR 16 //#define USED_BYTE_QTY_IN_ONE_SECTOR 32 //#define USED_BYTE_QTY_IN_ONE_SECTOR 64 #define USED_BYTE_QTY_IN_ONE_SECTOR 128 //#define USED_BYTE_QTY_IN_ONE_SECTOR 256 //#define USED_BYTE_QTY_IN_ONE_SECTOR 512 INT8U xdata protect_buffer[USED_BYTE_QTY_IN_ONE_SECTOR]; #ifdef DEBUG_STC89C_LE58RD+ //STC89C58RD+, 89LE58RD+ #define DEBUG_AP_Memory_Begin_Sector_addr 0x0000 #define DEBUG_AP_Memory_End_Sector_addr 0x7e00 #define DEBUG_AP_Memory_End_Byte_addr 0x7fff #define DEBUG_Data_Memory_Begin_Sector_addr 0x8000 #endif #ifdef DEBUG_STC89C_LE52RC //STC89C52RC, 89LE52RC #define DEBUG_AP_Memory_Begin_Sector_addr 0x0000 #define DEBUG_AP_Memory_End_Sector_addr 0x1e00 #define DEBUG_AP_Memory_End_Byte_addr 0x1fff #define DEBUG_Data_Memory_Begin_Sector_addr 0x2000 #endif /* 打开 ISP,IAP 功能 */ void ISP_IAP_enable(void) { EA = 0; /* 关中断 */ ISP_CONTR = ISP_CONTR & 0x18; /* 0001,1000 */ ISP_CONTR = ISP_CONTR | WAIT_TIME; ISP_CONTR = ISP_CONTR | 0x80; /* 1000,0000 */ } /* 关闭 ISP,IAP 功能 */ void ISP_IAP_disable(void) { ISP_CONTR = ISP_CONTR & 0x7f; /* 0111,1111 */ ISP_TRIG = 0x00; EA = 1; /* 开中断 */ } /* 字节读 */ INT8U byte_read(INT16U byte_addr) { ISP_ADDRH = (INT8U)(byte_addr >> 8); ISP_ADDRL = (INT8U)(byte_addr & 0x00ff); ISP_CMD = ISP_CMD & 0xf8; /* 1111,1000 */ ISP_CMD = ISP_CMD | READ_AP_and_Data_Memory_Command; /* 0000,0001 */ ISP_IAP_enable(); ISP_TRIG = 0x46; ISP_TRIG = 0xb9; _nop_(); ISP_IAP_disable(); return (ISP_DATA); } /* 扇区擦除 */ INT8U sector_erase(INT16U sector_addr) { INT16U get_sector_addr = 0; get_sector_addr = (sector_addr & 0xfe00); /* 1111,1110,0000,0000; 取扇区地址 */ ISP_ADDRH = (INT8U)(get_sector_addr >> 8); ISP_ADDRL = 0x00; ISP_CMD = ISP_CMD & 0xf8; /* 1111,1000 */ ISP_CMD = ISP_CMD | SECTOR_ERASE_AP_and_Data_Memory_Command; /* 0000,0011 */ ISP_IAP_enable(); ISP_TRIG = 0x46; /* 触发ISP_IAP命令 */ ISP_TRIG = 0xb9; /* 触发ISP_IAP命令 */ _nop_(); ISP_IAP_disable(); return OK; } /* 字节编程 */ INT8U byte_program(INT16U byte_addr, INT8U original_data) { ISP_ADDRH = (INT8U)(byte_addr >> 8); ISP_ADDRL = (INT8U)(byte_addr & 0x00ff); ISP_CMD = ISP_CMD & 0xf8; /* 1111,1000 */ ISP_CMD = ISP_CMD | PROGRAM_AP_and_Data_Memory_Command; /* 0000,0010 */ ISP_DATA = original_data; ISP_IAP_enable(); ISP_TRIG = 0x46; /* 触发ISP_IAP命令 */ ISP_TRIG = 0xb9; /* 触发ISP_IAP命令 */ _nop_(); ISP_IAP_disable(); return OK; } /* 字节编程并校验 */ INT8U byte_program_and_verify(INT16U byte_addr, INT8U original_data) { ISP_ADDRH = (INT8U)(byte_addr >> 8); ISP_ADDRL = (INT8U)(byte_addr & 0x00ff); ISP_CMD = ISP_CMD & 0xf8; /* 1111,1000 */ ISP_CMD = ISP_CMD | PROGRAM_AP_and_Data_Memory_Command; /* 0000,0010 */ ISP_DATA = original_data; ISP_IAP_enable(); ISP_TRIG = 0x46; ISP_TRIG = 0xb9; _nop_(); ISP_DATA = 0x00; ISP_CMD = ISP_CMD & 0xf8; /* 1111,1000 */ ISP_CMD = ISP_CMD | READ_AP_and_Data_Memory_Command; /* 0000,0001 */ ISP_TRIG = 0x46; /* 触发ISP_IAP命令 */ ISP_TRIG = 0xb9; /* 触发ISP_IAP命令 */ _nop_(); ISP_IAP_disable(); if(ISP_DATA == original_data) return OK; else return ERROR; } /* 写数据进 数据Flash存储器, 只在同一个扇区内写，不保留原有数据 */ /* 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 */ INT8U sequential_write_flash_in_one_sector(INT16U begin_addr, INT16U counter, INT8U array[]) { INT16U i = 0; INT16U in_sector_begin_addr = 0; INT16U 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; /* 0000,0001,1111,1111 */ if( (in_sector_begin_addr + counter) > USED_BYTE_QTY_IN_ONE_SECTOR ) return ERROR; /* 擦除 要修改/写入 的扇区 */ sector_addr = (begin_addr & 0xfe00); /* 1111,1110,0000,0000; 取扇区地址 */ ISP_ADDRH = (INT8U)(sector_addr >> 8); ISP_ADDRL = 0x00; ISP_CMD = ISP_CMD & 0xf8; /* 1111,1000 */ ISP_CMD = ISP_CMD | SECTOR_ERASE_AP_and_Data_Memory_Command; /* 0000,0011 */ ISP_IAP_enable(); ISP_TRIG = 0x46; /* 触发ISP_IAP命令 */ ISP_TRIG = 0xb9; /* 触发ISP_IAP命令 */ _nop_(); for(i = 0; i< counter; i++) { /* 写一个字节 */ ISP_ADDRH = (INT8U)(begin_addr >> 8); ISP_ADDRL = (INT8U)(begin_addr & 0x00ff); ISP_DATA = array[i]; ISP_CMD = ISP_CMD & 0xf8; /* 1111,1000 */ ISP_CMD = ISP_CMD | PROGRAM_AP_and_Data_Memory_Command; /* 0000,0010 */ ISP_TRIG = 0x46; /* 触发ISP_IAP命令 */ ISP_TRIG = 0xb9; /* 触发ISP_IAP命令 */ _nop_(); /* 读回来 */ ISP_DATA = 0x00; ISP_CMD = ISP_CMD & 0xf8; /* 1111,1000 */ ISP_CMD = ISP_CMD | READ_AP_and_Data_Memory_Command; /* 0000,0001 */ ISP_TRIG = 0x46; /* 触发ISP_IAP命令 */ ISP_TRIG = 0xb9; /* 触发ISP_IAP命令 */ _nop_(); /* 比较对错 */ if(ISP_DATA != array[i]) { ISP_IAP_disable(); return ERROR; } begin_addr++; } ISP_IAP_disable(); return OK; } /* 写数据进数据Flash存储器(EEPROM), 只在同一个扇区内写