Subversion Repositories sockit_owm

//---------------------------------------------------------------------------
// Copyright (C) 2000 Dallas Semiconductor Corporation, All Rights Reserved.
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// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY,  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// OTHER DEALINGS IN THE SOFTWARE.
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//---------------------------------------------------------------------------
//
//  findtype.c - Test module to find all devices of one type.
//
//  Version: 2.00
//
//----------------------------------------------------------------------
//
//
#include "ownet.h"
#include "findtype.h"
 
//----------------------------------------------------------------------
// Search for devices
//
// 'portnum'  - number 0 to MAX_PORTNUM-1.  This number is provided to
//              indicate the symbolic port number.
// 'FamilySN' - an array of all the serial numbers with the matching
//              family code
// 'family_code' - the family code of the devices to search for on the
//                 1-Wire Net
// 'MAXDEVICES'  - the maximum number of devices to look for with the
//                 family code passed.
//
// Returns: TRUE(1)  success, device type found
//          FALSE(0) device not found
//
SMALLINT FindDevices(int portnum, uchar FamilySN[][8], SMALLINT family_code, int MAXDEVICES)
{
   int NumDevices=0;
 
   // find the devices
   // set the search to first find that family code
   owFamilySearchSetup(portnum,family_code);
 
   // loop to find all of the devices up to MAXDEVICES
   NumDevices = 0;
   do
   {
      // perform the search
      if (!owNext(portnum,TRUE, FALSE))
         break;
 
      owSerialNum(portnum,FamilySN[NumDevices], TRUE);
      if ((FamilySN[NumDevices][0] & 0x7F) == (family_code & 0x7F))
      {
         NumDevices++;
      }
   }
   while (NumDevices < (MAXDEVICES - 1));
 
   // check if not at least 1 device
   return NumDevices;
}