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#include "common.h" #include "regs.h" #include <stdarg.h> #define CMD_HISTORY_MAX 20 /*va_list *va_start *va_end *va_arg */ /*检查上次数据是否发完，参考S3C6410手册P1096*/ #define TR_BUSY while(!(UTRSTAT0 & 2)) /*检查是否收到数据，参考S3C6410手册P1096*/ #define RC_BUSY while(!(UTRSTAT0 & 1)) char cmd_history[CMD_HISTORY_MAX][1024]; int cmd_history_last; int cmd_history_lastm; int cmd_history_first; void uart_init(void) { /*设置GPA0-1为UART_com0功能，参考S3C6410手册P312*/ GPACON &= ~(0xff); GPACON |= 0x22; /*设置8N1，参考S3C6410手册P1091*/ ULCON0 = 3; /*设置采用轮询模式，参考S3C6410手册P1092*/ UCON0 |= (1 << 2) | (1 << 0); /*把FIFO关掉*/ UFCON0 = 0; UMCON0 = 0; /*配置波特率为115200，参考S3C6410手册P1101*/ UBRDIV0 = 34;//34.8<--115200 UDIVSLOT0 = 0xdfdd;//13<--0.8 cmd_history_last = 0; cmd_history_lastm = 0; cmd_history_first = 0; } void uputchar(char c) { TR_BUSY; /*把要发送的数据写到发送寄存器，参考S3C6410手册P1100*/ UTXH0 = c; } char ugetchar(void) { RC_BUSY; /*硬件会把收到的数据自动放到URXH0里，参考S3C6410手册P1100*/ return URXH0; } void _uputs(char *buf) { while(*buf != '\0'){ uputchar(*buf); if(*buf == '\n'){ uputchar('\r'); } buf++; } } void uputs(char *buf) { _uputs(buf); uputchar('\n'); uputchar('\r'); } int uprintf(const char *fmt, ...); extern int status; char *ugets(char *buf) { char *save = buf; char c; int p=0,m=0,key_dir = 0; char d[10]; int n, i,temp; n=0; int buf_cmd_p = cmd_history_lastm; int buf_cmd_pd = cmd_history_lastm; char buf_temp[1024]; int buf_status = 0; int buf_first_flag = 0; *buf = '\0'; while((c = ugetchar()) != '\r'){ if( (c<='9' && c>='0') || (c<='z' && c>='a') || (c<='Z' && c>='A') || c==' ' || c=='"' || c==',' || c=='.' || c=='#' ){ if( key_dir==2 && (c=='A' || c=='B' || c=='C' || c=='D')){ if(c==68){ if(p!=0){ p--; uputchar(27);uputchar(91);uputchar(c); continue; } }else if(c == 67){ if(p!=m){ p++; uputchar(27);uputchar(91);uputchar(c); continue; } }else if(c == 65){ // uprintf("buf: %s\n",buf); // uprintf("cmd_history_first: %d, cmd_history_last: %d\n",cmd_history_first, cmd_history_last); // uprintf("buf_cmd_p: %d\n",buf_cmd_p); if(cmd_history_last == cmd_history_first) continue; if( buf_first_flag == 1){ continue; } if(buf_status == 0){ buf_status = 1; strcpy(buf_temp, buf); } strcpy(buf, cmd_history[buf_cmd_p]); buf_cmd_pd = buf_cmd_p--; if(buf_cmd_p == -1) buf_cmd_p = CMD_HISTORY_MAX-1; if(buf_cmd_pd == cmd_history_first) buf_first_flag = 1; for(i=0; i<p;i++) uputchar(8); for(i=0; i<m; i++) uputchar(' '); for(i=0; i<m; i++) uputchar(8); p= strlen(buf); m= strlen(buf); _uputs(buf); }else if( c == 66){ if(buf_status == 0) continue; if(buf_first_flag == 1){ buf_first_flag = 0; } buf_cmd_p = buf_cmd_pd++; if(buf_cmd_pd == CMD_HISTORY_MAX) buf_cmd_pd = 0;; if(buf_cmd_p == cmd_history_lastm){ strcpy(buf,buf_temp); buf_first_flag = 0; buf_status = 0; }else{ strcpy(buf,cmd_history[buf_cmd_pd]); } for(i=0; i<p;i++) uputchar(8); for(i=0; i<m; i++) uputchar(' '); for(i=0; i<m; i++) uputchar(8); _uputs(buf); p= strlen(buf); m= strlen(buf); } }else{ for(i=m; i>=p; i--){ buf[i+1] = buf[i]; } buf[p] = c; buf[++m] = '\0'; _uputs(buf+p++); for(i=m; i>p; i--) uputchar(8); } }else if(c == 27){ key_dir=1; }else if(c == 91){ if(key_dir == 1) key_dir = 2; }else if(c == '\b'){ if(p!=0){ for(i=p; i<m+1; i++){ buf[i-1] = buf[i]; } p--; m--; uputchar(8); _uputs(buf+p); uputchar(' '); uputchar(8); for(i=p; i<m;i++){ uputchar(8); } key_dir = 0; } }else if(c == 3){ break; }else{ key_dir = 0; /* * 显示按键的ASCII if(c<10) uputchar(c+'0'); else{ for(i=0;i<10;++i){ d[i] = c%10; c = c/10; if(c<10){ uputchar(c+'0'); break; } } for(;i>=0;--i) uputchar(d[i]+'0'); } uputchar(' '); */ } } buf[m] = '\0'; if(c==3) *buf = 0; if(*buf != '\0'){ if( strcmp(buf, cmd_history[cmd_history_lastm]) ){ strcpy(cmd_history[cmd_history_last], buf); cmd_history_lastm = cmd_history_last++; if(cmd_history_last == CMD_HISTORY_MAX) cmd_history_last = 0; if(cmd_history_last == cmd_history_first){ cmd_history_first++; if(cmd_history_first == CMD_HISTORY_MAX) cmd_history_first = 0; } } } uputchar('\r'); uputchar('\n'); return save; } void itoa(unsigned int d, char *buf) { int i; if(d < 10){ buf[0] = d + '0'; buf[1] = '\0'; return; } itoa(d / 10, buf); for(i = 0; buf[i] != '\0'; i++){ ; } buf[i] = (d % 10) + '0'; buf[i + 1] = '\0'; } void xtoa(unsigned int d, char *buf) { int i; if(d < 16){ if(d < 10){ buf[0] = d + '0'; buf[1] = '\0'; }else{ buf[0] = d - 10 + 'a'; buf[1] = '\0'; } return; } xtoa(d / 16, buf); for(i = 0; buf[i] != '\0'; i++){ ; } if((d % 16) < 10){ buf[i] = (d % 16) + '0'; buf[i + 1] = '\0'; }else{ buf[i] = (d % 16) - 10 + 'a'; buf[i + 1] = '\0'; } } /*%s %c %d %x*/ //uprintf("hello %d %c %x %s\n", 10, 'a', 0x100, "d"); //va_start 建立对应关系 //va_end 取消对应关系 //va_list 对应关系变量类型 //va_arg 根据对应关系取出相应的数据 int uprintf(const char *fmt, ...) { va_list ap; char c; int d; char *s; char buf[64]; va_start(ap, fmt); while(*fmt != '\0'){ if(*fmt == '%'){ fmt++; switch(*fmt){ case 'c': c = va_arg(ap, int); uputchar(c); break; case 'd': d = va_arg(ap, int); if(d < 0){ uputchar('-'); d = -d; } itoa(d, buf); _uputs(buf); break; case 's': s = va_arg(ap, char *); _uputs(s); break; case 'x': d = va_arg(ap, int); xtoa(d, buf); _uputs(buf); break; case '%': break; default: break; } }else{ uputchar(*fmt); if(*fmt == '\n'){ uputchar('\r'); } } fmt++; } va_end(ap); }