workbench/c/iprefs/serialprefs.c

   1 /*
   2     Copyright © 1995-2010, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: English
   7 */
   8
   9 /*********************************************************************************************/
  10
  11 #include "global.h"
  12
  13 #define DEBUG 0
  14 #include <aros/debug.h>
  15
  16 #include <prefs/prefhdr.h>
  17 #include <prefs/serial.h>
  18
  19 static const ULONG buffersizes[] =
  20 {
  21         512,
  22         1024,
  23         2048,
  24         4096,
  25         8000,
  26         16000,
  27         -1
  28 };
  29
  30 static LONG stopchunks[] =
  31 {
  32     ID_PREF, ID_SERL
  33 };
  34
  35 /*********************************************************************************************/
  36
  37 void SerialPrefs_Handler(STRPTR filename)
  38 {
  39     struct IFFHandle *iff;
  40     struct SerialPrefs *serialprefs;
  41
  42     D(bug("In IPrefs:SerialPrefs_Handler\n"));
  43     D(bug("filename=%s\n",filename));
  44
  45     iff = CreateIFF(filename, stopchunks, 1);
  46
  47     if (iff) {
  48         while(ParseIFF(iff, IFFPARSE_SCAN) == 0) {
  49             serialprefs = LoadChunk(iff, sizeof(struct SerialPrefs), MEMF_ANY);
  50             if (serialprefs) {
  51                 struct Preferences prefs;
  52                 ULONG index = 0;
  53
  54                 GetPrefs(&prefs, sizeof(prefs));
  55
  56                 while (-1 != buffersizes[index]) {
  57                     if (buffersizes[index] == serialprefs->sp_InputBuffer)
  58                         break;
  59                     index++;
  60                 }
  61
  62                 if (-1 == buffersizes[index])
  63                     index = 0;
  64
  65                 D(bug("Setting new serial prefs.\n"));
  66                 D(bug("Setting baudrate to %d\n", GET_LONG(serialprefs->sp_BaudRate)));
  67                 D(bug("Setting receive buffer size to %d\n",buffersizes[index]));
  68                 D(bug("Setting read bit len to %d\n",8-serialprefs->sp_BitsPerChar));
  69                 D(bug("Setting write bit len to %d\n",8-serialprefs->sp_BitsPerChar));
  70                 D(bug("Setting stop bits to %d\n",1+serialprefs->sp_StopBits));
  71
  72                 prefs.BaudRate   =  GET_LONG(serialprefs->sp_BaudRate);
  73                 prefs.SerRWBits  = (serialprefs->sp_BitsPerChar << 4) | serialprefs->sp_BitsPerChar;
  74                 prefs.SerStopBuf = (serialprefs->sp_StopBits    << 4) | index;
  75                 prefs.SerParShk  = (serialprefs->sp_Parity      << 4) | serialprefs->sp_InputHandshake;
  76
  77                 SetPrefs(&prefs, sizeof(prefs), TRUE);
  78                 FreeVec(serialprefs);
  79             }
  80         }
  81         KillIFF(iff);
  82     }
  83 }