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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 56 | elmo | 1 | /* First version by Bjoern Biesenbach <bjoern@bjoern-b.de> */ |
| 2 | #include <string.h> |
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| 3 | #include <unistd.h> |
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| 4 | #include <fcntl.h> |
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| 5 | #include <errno.h> |
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| 6 | #include <termios.h> |
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| 7 | #include <stdlib.h> |
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| 8 | |||
| 9 | #include "serial.h" |
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| 10 | #include "main.h" |
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| 11 | |||
| 12 | static int fd; // File descriptor for serial port |
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| 13 | |||
| 14 | int open_port(char *port) |
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| 15 | { |
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| 16 | int fds; /* File descriptor for the port */ |
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| 17 | |||
| 18 | fds = open(port, O_RDWR | O_NOCTTY | O_NDELAY); |
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| 19 | if (fds == -1) |
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| 20 | { |
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| 21 | /* |
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| 22 | * Could not open the port. |
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| 23 | */ |
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| 24 | perror("open_port: Unable to open serial port!"); |
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| 25 | exit(1); |
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| 26 | } |
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| 27 | else |
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| 28 | fcntl(fds, F_SETFL, 0); |
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| 29 | |||
| 30 | return (fds); |
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| 31 | } |
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| 32 | void AddCRC(unsigned int wieviele) |
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| 33 | { |
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| 34 | unsigned int tmpCRC = 0,i; |
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| 35 | for(i = 0; i < wieviele;i++) |
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| 36 | { |
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| 37 | tmpCRC += TxBuffer[i]; |
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| 38 | } |
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| 39 | tmpCRC %= 4096; |
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| 40 | TxBuffer[i++] = '=' + tmpCRC / 64; |
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| 41 | TxBuffer[i++] = '=' + tmpCRC % 64; |
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| 42 | TxBuffer[i++] = '\r'; |
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| 43 | } |
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| 44 | |||
| 45 | |||
| 46 | |||
| 47 | void sende() |
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| 48 | { |
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| 49 | unsigned char tmp_tx; |
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| 50 | int i=0; |
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| 51 | while(TxBuffer[i] !='\r' && i<150) |
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| 52 | { |
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| 53 | write(fd,&TxBuffer[i],1); |
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| 54 | i++; |
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| 55 | } |
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| 56 | write(fd,"\r",1); |
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| 57 | } |
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| 58 | |||
| 59 | void SendOutData(unsigned char cmd,unsigned char modul, unsigned char *buffer, int len) |
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| 60 | { |
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| 61 | unsigned int pt = 0,i; |
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| 62 | |||
| 63 | TxBuffer[pt++] = '#'; // Startzeichen |
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| 64 | TxBuffer[pt++] = modul+'a'; // Adresse (a=0; b=1,...) |
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| 65 | TxBuffer[pt++] = cmd; // Commando |
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| 66 | if(len) |
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| 67 | for(i = 0;i < len; i+=3) |
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| 68 | { |
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| 69 | TxBuffer[pt++] = '=' + (buffer[i] >> 2); |
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| 70 | TxBuffer[pt++] = '=' + (((buffer[i] & 0x03) << 4) | ((buffer[i+1] & 0xf0) >> 4)); |
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| 71 | TxBuffer[pt++] = '=' + ((unsigned char) ((buffer[i+1] & 0x0f) << 2) | ((buffer[i+2] & 0xc0) >> 6)); |
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| 72 | TxBuffer[pt++] = '=' + ((unsigned char) buffer[i+2] & 0x3f); |
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| 73 | } |
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| 74 | AddCRC(pt); |
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| 75 | sende(); |
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| 76 | } |
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| 77 | |||
| 78 | void initSerial(char *port) |
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| 79 | { |
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| 80 | struct termios options; |
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| 81 | fd=open_port(port); |
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| 82 | tcgetattr(fd, &options); |
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| 83 | cfsetispeed(&options, B57600); |
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| 84 | cfsetospeed(&options, B57600); |
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| 85 | options.c_cflag |= (CLOCAL | CREAD); |
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| 86 | tcsetattr(fd, TCSANOW, &options); |
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| 87 | fcntl(fd, F_SETFL, FNDELAY); |
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| 88 | } |