Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 145 | f9daq | 1 | #include <sys/stat.h> |
| 2 | #include <fcntl.h> |
||
| 3 | #include <string.h> |
||
| 4 | #include <termios.h> |
||
| 5 | |||
| 6 | #include "rs232.h" |
||
| 7 | //#define DEBUG |
||
| 8 | |||
| 9 | const int debug=0; |
||
| 10 | |||
| 11 | struct termios tattr; |
||
| 12 | |||
| 13 | int Delay(double sec){ |
||
| 14 | return usleep((int) (sec*1e6) ); |
||
| 15 | } |
||
| 16 | |||
| 17 | int SetComTime(int fd, double timeout_seconds){ |
||
| 18 | |||
| 19 | int ntenth; |
||
| 20 | |||
| 21 | ntenth = (int)(timeout_seconds*10); |
||
| 22 | tattr.c_cc[VTIME] = ntenth; |
||
| 23 | tcsetattr(fd, TCSANOW, &tattr); |
||
| 24 | #ifdef DEBUG |
||
| 25 | printf("SetComTime: %d\n", ntenth); |
||
| 26 | #endif |
||
| 27 | return 0; |
||
| 28 | } |
||
| 29 | |||
| 30 | int FlushInQ(int fd){ |
||
| 31 | return 0; |
||
| 32 | } |
||
| 33 | |||
| 34 | int FlushOutQ(int fd){ |
||
| 35 | return 0; |
||
| 36 | } |
||
| 37 | |||
| 38 | int ComWrt (int fd, char* cmd, int Count ){ |
||
| 39 | |||
| 40 | int nwr; |
||
| 41 | |||
| 42 | nwr=write(fd, cmd, Count); |
||
| 43 | #ifdef DEBUG |
||
| 44 | printf ( "ComWrt: %d, %d, %s\n", Count, nwr, cmd); |
||
| 45 | #endif |
||
| 46 | return nwr; |
||
| 47 | } |
||
| 48 | |||
| 49 | int ComRdTerm (int fd, char *response, int nb, int termchar) |
||
| 50 | { |
||
| 51 | |||
| 52 | int nread, nloop; |
||
| 53 | |||
| 54 | nread=0; |
||
| 55 | nloop=0; |
||
| 56 | |||
| 57 | #ifdef DEBUG |
||
| 58 | printf ( "ComRdTerm start\n") ; |
||
| 59 | #endif |
||
| 60 | // rewind(fpr); |
||
| 61 | while (1) { |
||
| 62 | if (nloop++ == nb) return -1; |
||
| 63 | // nread += read ( fd, response+nread, nb-nread ); |
||
| 64 | nread += read ( fd, response+nread, 1 ); |
||
| 65 | #ifdef DEBUG |
||
| 66 | response[nread]=0; |
||
| 67 | printf ("ComRdTerm nread: %d %d %s\n", nloop, nread, response) ; |
||
| 68 | #endif |
||
| 69 | if (nread>1) if(response[nread-1] == termchar) break; |
||
| 70 | } |
||
| 71 | |||
| 72 | nread = nread - 2; |
||
| 73 | response[nread]=0; |
||
| 74 | #ifdef DEBUG |
||
| 75 | printf("CmdRdTerm: %s\n",response); |
||
| 76 | #endif |
||
| 77 | return nread; |
||
| 78 | } |
||
| 79 | |||
| 80 | int OpenComConfig( char *dev, char * device_name, long Baud_Rate, int Parity, int Data_Bits, |
||
| 81 | int Stop_Bits, int Input_Queue_Size, int Output_Queue_Size ){ |
||
| 82 | |||
| 83 | int fd; |
||
| 84 | |||
| 85 | memset (&tattr, 0, sizeof tattr); |
||
| 86 | |||
| 87 | fd=open(dev, O_RDWR | O_NOCTTY | O_SYNC); |
||
| 88 | // see 'man tcsetattr' |
||
| 89 | tcgetattr (fd, &tattr); |
||
| 90 | cfmakeraw(&tattr); |
||
| 91 | cfsetspeed(&tattr, B38400); |
||
| 92 | // cfsetispeed(&tattr, B38400); |
||
| 93 | // cfsetospeed(&tattr, B38400); |
||
| 94 | // input modes |
||
| 95 | tattr.c_iflag&=~IGNBRK; |
||
| 96 | tattr.c_iflag&=~(IGNCR | ICRNL | INLCR); |
||
| 97 | tattr.c_iflag&=~(IXON | IXOFF | IXANY); |
||
| 98 | // output modess |
||
| 99 | tattr.c_oflag=0; |
||
| 100 | // local modes |
||
| 101 | tattr.c_lflag=0; |
||
| 102 | tattr.c_lflag &= ~(ICANON|ECHO) ; // canonical mode and echo input char |
||
| 103 | // control modes |
||
| 104 | tattr.c_cflag |= (CLOCAL | CREAD); // ignore modem controls, |
||
| 105 | // enable reading |
||
| 106 | tattr.c_cflag &= ~(PARENB | PARODD); // shut off parity |
||
| 107 | tattr.c_cflag &= ~CSTOPB; // set two stop bits |
||
| 108 | tattr.c_cflag &= ~CRTSCTS; // enable RTS/CTS flow control |
||
| 109 | |||
| 110 | tattr.c_cc[VMIN] = 0; |
||
| 111 | tattr.c_cc[VTIME] = 2; |
||
| 112 | tcsetattr(fd, TCSAFLUSH, &tattr); |
||
| 113 | |||
| 114 | #ifdef DEBUG |
||
| 115 | printf("OpenComConfig\n"); |
||
| 116 | #endif |
||
| 117 | return fd; ; |
||
| 118 | } |
||
| 119 | |||
| 120 | |||
| 121 | int CloseCom (int fd){ |
||
| 122 | |||
| 123 | close(fd); |
||
| 124 | return; |
||
| 125 | } |