单片机ISP烧写程序——C代码.pdf-资料库

设计自己的ISP程序 C程序源代码 /*定义为STC单片机(如果是SST单片机则去掉此行)*/ /******************************************************************** IAP.C SST 和STC单片机IAP操作函数魏东(tonywei@tom.com) 2004.7.23 ********************************************************************/ #define STC /******************************************************************** * SFR Memory Addresses ********************************************************************/ sfr SFCF = 0xB1; /*SuperFlash Configuration*/ sfr SFCM = 0xB2; /*SuperFlash Command*/ sfr SFAL = 0xB3; /*SuperFlash Address Low*/ sfr SFAH = 0xB4; /*SuperFlash Address High*/ sfr SFDT = 0xB5; /*SuperFlash Data*/ sfr SFST = 0xB6; /*SuperFlash Status*/ /******************************************************************** * MCU IAP Commands ********************************************************************/ #define SFCM_BE 0x0D; /*block-Erase IAP cmd*/ #define SFCM_SE 0x0B; /*Sector-Erase IAP cmd*/ #define SFCM_VB 0x0C; /*Byte-Verify IAP cmd*/ #define SFCM_PB 0x0E; /*Byte-Program IAP cmd*/ bit iap_error=0; void block0_erase(void); void sector_erase(unsigned int); void byte_program(unsigned int, unsigned char); unsigned char byte_verify(unsigned int); unsigned char ready(void); /******************************************************************** * Block0-Erase Subroutine ********************************************************************/ void block0_erase(void) { SFCF = SFCF | 0x40; #ifdef STC SFAH = 0xf0; #else SFAH = 0x00; #endif SFDT = 0x55; SFCM = SFCM_BE; } /******************************************************************** * Sector-Erase Subroutine ********************************************************************/ void sector_erase(unsigned short int destAddr) { SFCF = SFCF | 0x40; SFAH = destAddr>>8; SFAL = destAddr; SFCM = SFCM_SE; /*enable IAP */ /*load high order address byte*/ /*load low order address byte */ /*issue block erase command */ /*issue sector erase command */ if(!ready()) iap_error=1; if(!ready()) iap_error=1; /*enable IAP */ /*STC单片机选择block0*/ /*SST单片机选择block0*/ 1

if(!ready()) iap_error=1; /*turn off IAP*/ return readByte; /*issue byte program command */ /*load low order address byte */ /*issue byte verify command */ /*enable IAP */ /*load high order address byte*/ /*load low order address byte */ /*load data to be programmed */ /*enable IAP */ /*load high order address byte*/ } /******************************************************************** * Byte-Program Subroutine ********************************************************************/ void byte_program(unsigned short int destAddr, unsigned char dataByte) { SFCF = SFCF | 0x40; SFAH = destAddr>>8; SFAL = destAddr; SFDT = dataByte; SFCM = SFCM_PB; } /******************************************************************** * Byte-Verify Subroutine ********************************************************************/ unsigned char byte_verify(unsigned short int destAddr) { unsigned char readByte; SFCF = SFCF | 0x40; SFAH = destAddr>>8; SFAL = destAddr; SFCM = SFCM_VB; readByte = SFDT; SFCF = SFCF & 0xBF; SFDT = 0; } /******************************************************************** * Ready Subroutine * Purpose: To check if the IAP operation is completed. * When it is done, turn off IAP configuration. ********************************************************************/ unsigned char ready() { unsigned long TimeOut; { } SFCF = SFCF & 0xBF; SFDT = 0; } { SFCF = SFCF & 0xBF; SFDT = 0; } /* any value other than 0x55 */ /* IAP operation is completed*/ /*any value other than 0x55*/ /*IAP operation is NOT completed before time out*/ if ((SFST&4) == 0) /* Check if IAP is done */ for(TimeOut=0;TimeOut<100000;TimeOut++) /* IAP is done */ /* turn off IAP*/ return 1; return 0; /*turn off IAP*/ 2

/* 延时*/ /* 振荡频率*/ 附件二：ISP.C /******************************************************************** SST或STC单片机ISP程序魏东(tonywei@tom.com) 2004.7.25 SST89C54 或STC89C516RD,频率:7.372848MHz ********************************************************************/ #include "reg51.h" /* 对IAP.C调用的定义 */ extern bit iap_error; extern void block0_erase(void); extern void sector_erase(unsigned int); extern void byte_program(unsigned int, unsigned char); extern unsigned char byte_verify(unsigned int); extern unsigned char ready(void); //#define STC /* 定义为STC单片机*/ sfr WDTC = 0xC0; sfr WDTD = 0x86; sfr SFCF = 0xB1; #define CON_OSC 7372848 #define CON_BPS 256 - ( CON_OSC / 12 / 32 / 6400 ) /* 6400BPS时间常数*/ #define CON_MSC CON_OSC/360000 /* 变量定义*/ unsigned char com_buf[58]; unsigned int nAddress = 0; /* 编程器编程地址*/ /* 函数定义*/ unsigned char com_getch(void); void com_putch(char); void com_putinfo(void); void delay_ms(unsigned char); void delay_s(unsigned char); void (* pc_0)(void); void goto_pc0(void); /*******************************************************************/ /* 串口接收字符*/ unsigned char com_getch(void) { unsigned char c; RI=0; c=SBUF; } /* 串口发送字符*/ void com_putch(char c) { TI=0; SBUF=c; } /* 串口发送复位信息*/ void com_putinfo(void) /* 延时(单位:0.1毫秒) */ /* 延时(单位:0.01秒) */ /* 程序地址*/ /* 跳转到程序地址运行*/ /* 串口发送字符*/ /* 串口发送复位信息*/ /* 串口接收字符*/ while(RI==0); return c; while(TI==0); 3

unsigned char cr,ci; /* 发送效验和*/ for(cj=0;cj

/* 波特率时间常数*/ /* 启动定时器*/ /* 禁止中断*/ /* 关看门狗*/ /* set TI to send first char of UART */ for(ci=0;ci<5;ci++) delay_ms(100); /* 等待mS稳定时间*/ /* 发送复位信息*/ if(RI) while(1) com_putinfo(); { ci=SBUF; RI=0; ui=0; } ui++; TH1=CON_BPS; TL1=CON_BPS; TR1=1; EA=0; TI=1; WDTD = 0; WDTC = 0; SFCF |= 0x80; com_putinfo(); ui=0; RI=0; { delay_ms(1); } while(1) { iap_error=0; if(ci==0x21) { } 据,效验和*/ { #ifdef STC #else 限制写地址*/ #endif } } { block0_erase(); nAddress ++; if((ci==0x21)||(ci==0x07)) break;/* 接收到命令就进入通讯*/ if(ui>=10000) goto_pc0(); /* 等待秒,跳转到用户程序运行*/ for(ci=0;ci<3;ci++) com_buf[ci]=com_getch(); if((com_buf[0]==0x5a)||(com_buf[1]==0)||(com_buf[2]==0xa6)) else com_putch(5); /* 发送复位信息*/ /* 返回错误标志*/ else if(ci==0x07) /* 数据包：H,0EH,包长度,'W',00H,地址高字节,地址低字节，程序数 for(ci=0;ci<2;ci++) com_buf[ci]=com_getch(); if((com_buf[0]==0x0e)&&com_buf[1]) for(ci=0;ci<=cj;ci++) { cj = com_buf[1]; cr = cj; { com_buf[ci] = com_getch(); cr += com_buf[ci]; } { nAddress = com_buf[2]*256 + com_buf[3]; cj -= 4; { for(ci=0;ci4)) /* 返回错误标志*/ byte_program(nAddress,com_buf[4+ci]); /* 写*/ if(nAddress<0x8000) byte_program(nAddress,com_buf[4+ci]); /* SST if(iap_error) com_putch(5); /* 返回错误标志*/ else com_putch(6); /* 返回正确标志*/ else if((com_buf[0]=='A')||(com_buf[0]=='C')) /* 擦除器件*/ 5

else com_putch(5); /* 返回错误标志*/ /* 返回错误标志*/ else com_putch(5); /* 返回错误标志*/ else com_putch(5); else if(com_buf[0]=='U') if(iap_error) com_putch(5); /* 返回错误标志*/ else com_putch(6); /* 返回正确标志*/ /* 返回正确标志*/ /* 跳转到用户程序运行*/ } { com_putch(6); goto_pc0(); } } } ci = com_getch(); } } 附件三：DOWNLOAD.C /******************************************************************** ISP 下载程序魏东(tonywei@tom.com) 2004.7.25 Program files must be of INTEL standard HEX format. This code was compiled using Borland C++ version 5.0 for DOS. The clock() function is used to determine communication timeouts. [the tick resolution is assumed to be 1/18th of a second. It may be different on other compilers or in memory models other than LARGE] ********************************************************************/ #include /*for reading hex file*/ #include /*for copying parameter strings*/ #include /*for exit() function*/ #include /*for clock() and clock_t (timeouts)*/ #include /*for reading/writing the UART hardware ports*/ #include /*for toupper() function*/ /*******************************************************************/ #define DEFAULTTIMEOUT 5 /*about a quarter of a second*/ #define ERASETIMEOUT 80 /*about 4 seconds*/ #define VER " 1.01 " #define DATE "25 July,2004 " /*function prototypes*/ int reset(int *major, int *minor); int download(int rev, char *program); int run(); void showTitle(void); void showInstructions(void); int decodeCommandLine(int argc, char *argv[], int *comport, double *crystal, char *filename, int *dontEraseData, 6

int *autoRun); int validateParameters(int comport, double *crystal, char *filename); int openComms(int comport, long baudrate); int initcommshardware(int comport, unsigned long int baudrate); int dataavail(void); void charin(unsigned char *ch); int clearxmit(void); void charout(unsigned char ch); int readBlockFromFile(FILE *FptrIn, unsigned long *addr,unsigned char *data); int sendPacket(unsigned char *message, int length); int sendLoaderPacket(int len, char *data); int waitForAck(int timeout); int waitForSignature(char *sig, int *major, int *minor); int enable(int revision, int dontEraseData); int downloadU(char *program); int runU(long address); /*******************************************************************/ /* BEGINNING OF MAIN PROGRAM */ /*******************************************************************/ void main(int argc, char *argv[]) { int comport=1; /*comport to connect through*/ long baudrate=9600; /*communications baud rate*/ char filename[256]=""; /*name&location of program to download*/ double crystal=11.059200; /*crystal frequency of the target*/ int rMajor, rMinor; /*rev number of the target firmware*/ int dontEraseData = 0; /*default to erasing all target memory*/ int autoRun=0; /*don't automatically run target prog*/ showTitle(); decodeCommandLine(argc,argv, &comport,&crystal, filename, &dontEraseData, &autoRun); if(!validateParameters(comport,&crystal,filename)) exit(1); /*work out actual baud rate*/ baudrate=crystal/1152.0; openComms(comport,baudrate); /*reset the target device*/ if(reset(&rMajor,&rMinor)) { rMajor=2; if(enable(rMajor,dontEraseData)) { if(download(rMajor,filename)) { 7

if(autoRun) { run(); } } } } } /*******************************************************************/ /* END OF MAIN PROGRAM , BEGINNING OF FUNCTIONS */ /*******************************************************************/ /*extract the filename etc. from the command line parameters*/ int decodeCommandLine(int argc,char *argv[], int *comport,double *crystal, char *filename, int *dontEraseData, int *autoRun) { int i; char option; for(i=1;i

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单片机ISP烧写程序——C代码.pdf

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