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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 146 | f9daq | 1 | #include <sys/stat.h> |
| 2 | #include <fcntl.h> |
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| 3 | #include <string.h> |
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| 4 | #include <termios.h> |
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| 5 | |||
| 6 | #include "rs232.h" |
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| 7 | //#define DEBUG |
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| 8 | |||
| 9 | const int debug=0; |
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| 10 | |||
| 11 | struct termios tattr; |
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| 12 | |||
| 13 | int Delay(double sec){ |
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| 14 | return usleep((int) (sec*1e6) ); |
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| 15 | } |
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| 16 | |||
| 17 | int SetComTime(int fd, double timeout_seconds){ |
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| 18 | |||
| 19 | int ntenth; |
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| 20 | |||
| 21 | ntenth = (int)(timeout_seconds*10); |
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| 22 | tattr.c_cc[VTIME] = ntenth; |
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| 23 | tcsetattr(fd, TCSANOW, &tattr); |
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| 24 | #ifdef DEBUG |
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| 25 | printf("SetComTime: %d\n", ntenth); |
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| 26 | #endif |
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| 27 | return 0; |
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| 28 | } |
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| 29 | |||
| 30 | int FlushInQ(int fd){ |
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| 31 | return 0; |
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| 32 | } |
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| 33 | |||
| 34 | int FlushOutQ(int fd){ |
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| 35 | return 0; |
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| 36 | } |
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| 37 | |||
| 38 | int ComWrt (int fd, char* cmd, int Count ){ |
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| 39 | |||
| 40 | int nwr; |
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| 41 | |||
| 42 | nwr=write(fd, cmd, Count); |
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| 43 | #ifdef DEBUG |
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| 44 | printf ( "ComWrt: %d, %d, %s\n", Count, nwr, cmd); |
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| 45 | #endif |
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| 46 | return nwr; |
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| 47 | } |
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| 48 | |||
| 49 | int ComRdTerm (int fd, char *response, int nb, int termchar) |
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| 50 | { |
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| 51 | |||
| 52 | int nread, nloop; |
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| 53 | |||
| 54 | nread=0; |
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| 55 | nloop=0; |
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| 56 | |||
| 57 | #ifdef DEBUG |
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| 58 | printf ( "ComRdTerm start\n") ; |
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| 59 | #endif |
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| 60 | // rewind(fpr); |
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| 61 | while (1) { |
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| 62 | if (nloop++ == nb) return -1; |
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| 63 | // nread += read ( fd, response+nread, nb-nread ); |
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| 64 | nread += read ( fd, response+nread, 1 ); |
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| 65 | #ifdef DEBUG |
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| 66 | response[nread]=0; |
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| 67 | printf ("ComRdTerm nread: %d %d %s\n", nloop, nread, response) ; |
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| 68 | #endif |
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| 69 | if (nread>1) if(response[nread-1] == termchar) break; |
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| 70 | } |
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| 71 | |||
| 72 | nread = nread - 2; |
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| 73 | response[nread]=0; |
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| 74 | #ifdef DEBUG |
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| 75 | printf("CmdRdTerm: %s\n",response); |
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| 76 | #endif |
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| 77 | return nread; |
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| 78 | } |
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| 79 | |||
| 80 | int OpenComConfig( char *dev, char * device_name, long Baud_Rate, int Parity, int Data_Bits, |
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| 81 | int Stop_Bits, int Input_Queue_Size, int Output_Queue_Size ){ |
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| 82 | |||
| 83 | int fd; |
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| 84 | |||
| 85 | memset (&tattr, 0, sizeof tattr); |
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| 86 | |||
| 87 | fd=open(dev, O_RDWR | O_NOCTTY | O_SYNC); |
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| 88 | // see 'man tcsetattr' |
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| 89 | tcgetattr (fd, &tattr); |
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| 90 | cfmakeraw(&tattr); |
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| 91 | cfsetspeed(&tattr, B38400); |
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| 92 | // cfsetispeed(&tattr, B38400); |
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| 93 | // cfsetospeed(&tattr, B38400); |
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| 94 | // input modes |
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| 95 | tattr.c_iflag&=~IGNBRK; |
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| 96 | tattr.c_iflag&=~(IGNCR | ICRNL | INLCR); |
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| 97 | tattr.c_iflag&=~(IXON | IXOFF | IXANY); |
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| 98 | // output modess |
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| 99 | tattr.c_oflag=0; |
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| 100 | // local modes |
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| 101 | tattr.c_lflag=0; |
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| 102 | tattr.c_lflag &= ~(ICANON|ECHO) ; // canonical mode and echo input char |
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| 103 | // control modes |
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| 104 | tattr.c_cflag |= (CLOCAL | CREAD); // ignore modem controls, |
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| 105 | // enable reading |
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| 106 | tattr.c_cflag &= ~(PARENB | PARODD); // shut off parity |
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| 107 | tattr.c_cflag &= ~CSTOPB; // set two stop bits |
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| 108 | tattr.c_cflag &= ~CRTSCTS; // enable RTS/CTS flow control |
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| 109 | |||
| 110 | tattr.c_cc[VMIN] = 0; |
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| 111 | tattr.c_cc[VTIME] = 2; |
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| 112 | tcsetattr(fd, TCSAFLUSH, &tattr); |
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| 113 | |||
| 114 | #ifdef DEBUG |
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| 115 | printf("OpenComConfig\n"); |
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| 116 | #endif |
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| 117 | return fd; ; |
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| 118 | } |
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| 119 | |||
| 120 | |||
| 121 | int CloseCom (int fd){ |
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| 122 | |||
| 123 | close(fd); |
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| 124 | return; |
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| 125 | } |