pc-tools/src-filters/load.c

   1 /* Simple program to load paper tape over serial port. Does that twice and compares. */
   2
   3 #include <stdio.h>
   4 #include <termios.h>
   5 #include <sys/types.h>
   6 #include <sys/stat.h>
   7 #include <fcntl.h>
   8 #include <signal.h>
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11
  12 struct termios orgstate;
  13 struct termios workstate;
  14
  15 #define PORT_FILE "/dev/ttyS0"
  16 #define BUFFER_SIZE 1000000
  17
  18 char * buffer;
  19 int sp, ep, count, portfd;
  20
  21 void sighandler(int sig){
  22     sp=0;
  23     ep=count-1;
  24     close (portfd);
  25 //    fprintf(stderr,"%i %i\n", sp, ep);
  26     if (count>0) {
  27         while(buffer[sp]==0) sp++;
  28         while(buffer[ep]==0) ep--;
  29     }
  30
  31     write(1,buffer+sp,ep-sp+1);
  32     tcdrain(2);
  33     fprintf(stderr,"Eingelesen: %i\n",ep-sp+1);
  34     tcsetattr(portfd, TCSANOW, &orgstate);
  35     close(portfd);
  36     exit(0);
  37 }
  38
  39 int main (int argc, char ** argv){
  40
  41     portfd=open(PORT_FILE, O_RDWR);
  42     tcgetattr(portfd, &orgstate);
  43     tcgetattr(portfd, &workstate);
  44     cfmakeraw(&workstate);
  45 //    workstate.c_oflag=0;
  46     workstate.c_cflag|=CS8+CREAD+CLOCAL+CRTSCTS+CSTOPB    ;
  47 //    workstate.c_lflag=0;
  48     cfsetspeed(&workstate, B4800);
  49     tcsetattr(portfd, TCSANOW, &workstate);
  50     count=0;
  51
  52     signal(SIGINT, sighandler);
  53     buffer=(char *) malloc(BUFFER_SIZE);
  54     fprintf(stderr, "Warte auf Daten. Einspielen und dann CTRL-C drücken.\n");
  55
  56     while(1) {
  57         int erg=read(portfd, buffer+count, 1);
  58         if (erg>0) count+=erg;
  59     }
  60
  61
  62 } //main();
  63 // Ende.