183.基于AT89C51单片机的超级终端.zip

#include "HyperTerminal.h" /*****************************************************************************/ char idata SerialBuffer[MAX_SERIAL_BUFFER_SIZE]; char idata PromptBuffer[MAX_PROMPT_BUFFER_SIZE]; char idata CursorPosion; char idata ExecCommandFlag; COMMAND CommandList[MAX_COMMAND_NUM] = { {"help",Help," help -- Command help"}, {"prompt",Prompt," prompt <string> -- Change a prompt"}, {"clear",Clear," clear -- Clear screen"}, {"reboot",Reboot," reboot -- Reboot the MCU"} }; /*****************************************************************************/ void Help(char argc, const char **argv) { char i; argv = argv; switch(argc) { case 1: for(i = 0; i < MAX_COMMAND_NUM; i++) { SerialSendStr(CommandList[i].HelpString); SerialSendStr("\r\n"); } SerialSendStr("\r\n"); break; default: SerialSendStr(" Invalid 'help' command: too many arguments\r\n"); SerialSendStr(" Usage:\r\n"); SerialSendStr(" help\r\n"); break; } } void Prompt(char argc, const char **argv) { switch(argc) { case 2: if(strlen(argv[1]) >= MAX_PROMPT_BUFFER_SIZE) { SerialSendStr(" Warnning:Your argument is too long!\r\n\r\n"); break; } memcpy(PromptBuffer,argv[1],MAX_PROMPT_BUFFER_SIZE); SerialSendStr(" Prompt is chagned to \""); sprintf(&SerialBuffer[0],"%s\"\r\n\r\n",&PromptBuffer[0]); SerialSendStr(&SerialBuffer[0]); break; default: SerialSendStr(" Invalid 'prompt' command: too few or many arguments\r\n"); SerialSendStr(" Usage:\r\n"); SerialSendStr(" prompt <string>\r\n"); break; } } void Clear(char argc, const char **argv) { argv = argv; switch(argc) { case 1: SerialSendStr(CLEARSCREEN); break; default: SerialSendStr(" Invalid 'clear' command: too many arguments\r\n"); SerialSendStr(" Usage:\r\n"); SerialSendStr(" clear\r\n"); break; } } void Reboot(char argc, const char **argv) { argv = argv; switch(argc) { case 1: (*(void(*)())0)(); break; default: SerialSendStr(" Invalid 'reboot' command: too many arguments\r\n"); SerialSendStr(" Usage:\r\n"); SerialSendStr(" reboot\r\n"); break; } } /*****************************************************************************/ void InitHyperTerminal(void) { TMOD |= 0x20; /* timer1, mode 2, 8 bit reload */ SCON = 0x50; /* serial mode 1, 8 bit uart, enable receive */ PCON = 0x80; /* SMOD = 1, double baud */ TH1 = 0xFF; /* baud = 57600, fosc = 11.0592MHZ */ TL1 = 0xFF; RI = 0; /* clear receive flag */ TI = 0; /* clear send flag */ TR1 = 1; /* start timer1 */ ES = 1; /* enable serial interrupt */ EA = 1; /* enable all interrupt */ CursorPosion = 0; ExecCommandFlag = 0; memset(&SerialBuffer[0],'\0',MAX_SERIAL_BUFFER_SIZE); memcpy(&PromptBuffer[0],"-->>",MAX_PROMPT_BUFFER_SIZE); SerialSendStr(F_LIGHTGREEN); SerialSendStr(B_BLACK); SerialSendStr(CLEARSCREEN); SerialSendStr("-----------------------------\r\n"); SerialSendStr(" The 8051 Hyper Terminal,by JJJ\r\n"); SerialSendStr(" http://www.proteus.com.cn \r\n"); SerialSendStr("-----------------------------\r\n"); SerialSendStr("\r\n"); SerialSendStr(&PromptBuffer[0]); } void SerialSendByte(char dat) { SBUF = dat; while(TI == 0); TI = 0; } void SerialSendStr(char *str) { while(*str != '\0') { SerialSendByte(*str); str++; } } void SerialInterrupt(void) interrupt 4 using 3 { char SbufTemp; if(RI) { RI = 0; SbufTemp = SBUF; switch(SbufTemp) { case 0x08: case 0x06: case 0x07: case 0x7E: case 0x7F: if(CursorPosion > 0) { CursorPosion--; SerialSendByte(0x08); SerialSendByte(' '); SerialSendByte(0x08); } SerialBuffer[CursorPosion] = '\0'; break; case '\r': case '\n': case '\0': SerialSendByte('\r'); SerialSendByte('\n'); ExecCommandFlag = 1; break; case '\t': break; default: if(CursorPosion < MAX_SERIAL_BUFFER_SIZE) { SerialBuffer[CursorPosion] = SbufTemp; SerialSendByte(SbufTemp); CursorPosion++; } else { CursorPosion = 0; memset(&SerialBuffer[0],'\0',MAX_SERIAL_BUFFER_SIZE); SerialSendStr("\r\n Warnning:Your command string is too long!\r\n\r\n"); SerialSendStr(&PromptBuffer[0]); } break; } } } void ParseArgs(char *argstr,char *argc_p,char **argv, char **resid) { char argc = 0; char c; PARSESTATE stackedState,lastState = PS_WHITESPACE; while ((c = *argstr) != 0) { PARSESTATE newState; if (c == ';' && lastState != PS_STRING && lastState != PS_ESCAPE) break; if (lastState == PS_ESCAPE) { newState = stackedState; } else if (lastState == PS_STRING) { if (c == '"') { newState = PS_WHITESPACE; *argstr = 0; } else { newState = PS_STRING; } } else if ((c == ' ') || (c == '\t')) { *argstr = 0; newState = PS_WHITESPACE; } else if (c == '"') { newState = PS_STRING; *argstr++ = 0; argv[argc++] = argstr; } else if (c == '\\') { stackedState = lastState; newState = PS_ESCAPE; } else { if (lastState == PS_WHITESPACE) { argv[argc++] = argstr; } newState = PS_TOKEN; } lastState = newState; argstr++; } argv[argc] = NULL; if (argc_p != NULL) *argc_p = argc; if (*argstr == ';') { *argstr++ = '\0'; } *resid = argstr; } void ExecCommand(char *buf) { char argc,*argv[8],*resid,i; COMMAND *Command = 0; while(*buf) { memset(argv,0,sizeof(argv)); ParseArgs(buf, &argc, argv, &resid); if(argc > 0) { for(i = 0; i < MAX_COMMAND_NUM; i++) { Command = &CommandList[i]; if(strncmp(Command->CommandName,argv[0],strlen(argv[0])) == 0) break; else Command = 0; } if(Command == 0) { SerialSendStr(" Could not found \""); SerialSendStr(argv[0]); SerialSendStr("\" command\r\n"); SerialSendStr(" If you want to konw available commands, type 'help'\r\n\r\n"); } else { Command->CommandFunc(argc,argv); } } buf = resid; } } void RunHyperTerminal(void) { if(ExecCommandFlag) { ExecCommand(&SerialBuffer[0]); SerialSendStr(&PromptBuffer[0]); memset(&SerialBuffer[0],'\0',MAX_SERIAL_BUFFER_SIZE); CursorPosion = 0; ExecCommandFlag = 0; } }