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//---------------------------------------------------------------------------
// Copyright (C) 1999 Dallas Semiconductor Corporation, All Rights Reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// 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.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL DALLAS SEMICONDUCTOR BE LIABLE FOR ANY CLAIM, DAMAGES
// OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
// Except as contained in this notice, the name of Dallas Semiconductor
// shall not be used except as stated in the Dallas Semiconductor
// Branding Policy.
//---------------------------------------------------------------------------
//
// MLanSesU.C - Aquire and release a Session on the 1-Wire Net.
//
// Version: 1.03
//
#include "pmapi.h"
#include "mlan.h"
// external function prototypes
extern int OpenCOM(char *);
extern void CloseCOM(void);
extern int DS2480Detect(void);
// local function prototypes
int Aquire1WireNet(char *, char *);
void Release1WireNet(char *);
// keep port name for later message when closing
char portname[128];
// debugging
int MLanDebug = 0;
//---------------------------------------------------------------------------
// Attempt to aquire a 1-Wire net using a com port and a DS2480 based
// adapter.
//
// 'port_zstr' - zero terminated port name. For this platform
// use format COMX where X is the port number.
// 'return_msg' - zero terminated return message.
//
// Returns: TRUE - success, COM port opened
//
int Aquire1WireNet(char *port_zstr, char *return_msg)
{
int cnt=0;
portname[0] = 0;
// attempt to open the communications port
if (OpenCOM(port_zstr) >= 0)
cnt += sprintf(&return_msg[cnt],"%s opened\n",port_zstr);
else
{
cnt += sprintf(&return_msg[cnt],"Could not open port %s: %s,"
" aborting.\nClosing port %s.\n",port_zstr,osstrerror(),port_zstr);
return FALSE;
}
// detect DS2480
if (DS2480Detect())
cnt += sprintf(&return_msg[cnt],"DS2480-based adapter detected\n");
else
{
cnt += sprintf(&return_msg[cnt],"DS2480-based adapter not detected, aborting program\n");
cnt += sprintf(&return_msg[cnt],"Closing port %s.\n",port_zstr);
CloseCOM();
return FALSE;
}
// success
sprintf(portname,"%s",port_zstr);
return TRUE;
}
//---------------------------------------------------------------------------
// Release the previously aquired a 1-Wire net.
//
// 'return_msg' - zero terminated return message.
//
void Release1WireNet(char *return_msg)
{
// close the communications port
sprintf(return_msg,"Closing port %s.\n",portname);
CloseCOM();
}
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