--- /dev/null
+//---------------------------------------------------------------------------
+// Copyright (C) 2001 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.
+//---------------------------------------------------------------------------
+//
+// owsestmx.c - Acquire and release a Session on the 1-Wire Net using TMEX.
+// (Requires TMEX 3.11 or newer)
+//
+// Version: 2.01
+//
+// History: 1.03 -> 2.00 Changed 'MLan' to 'ow'. Added support for
+// multiple ports.
+// 2.00 -> 2.01 Added support for owError library.
+//
+
+#include <stdio.h>
+#include <windows.h>
+#include "ownet.h"
+
+// external function prototypes
+extern long far pascal TMExtendedStartSession(short, short, void far *);
+extern short far pascal TMEndSession(long);
+extern short far pascal TMClose(long);
+extern short far pascal TMSetup(long);
+extern short far pascal TMReadDefaultPort(short far *, short far *);
+
+short PortNum=1,PortType=2;
+long SessionHandle[MAX_PORTNUM];
+SMALLINT handle_init = FALSE;
+
+//---------------------------------------------------------------------------
+// Attempt to acquire a 1-Wire net using a com port and a DS2480 based
+// adapter.
+//
+// 'port_zstr' - zero terminated port name. For this platform
+// use format {port number, port type}.
+//
+// Returns: port number and -1 if not successful in setting up the port.
+//
+int owAcquireEx(char *port_zstr)
+{
+ int portnum;
+ int string_counter, counter, i, lenmax;
+ char portnum_str[15];
+ char porttype_str[15];
+ void *tmex_options = NULL;
+
+ if(!handle_init)
+ {
+ for(i=0; i<MAX_PORTNUM; i++)
+ SessionHandle[i] = 0;
+ handle_init = TRUE;
+ }
+
+ // check to find first available handle slot
+ for(portnum = 0; portnum<MAX_PORTNUM; portnum++)
+ {
+ if(!SessionHandle[portnum])
+ break;
+ }
+ OWASSERT( portnum<MAX_PORTNUM, OWERROR_PORTNUM_ERROR, -1 );
+
+ // convert the string in port_zstr to be the port number and port type
+ if(port_zstr)
+ {
+ lenmax = strlen(port_zstr);
+ if (lenmax > 12)
+ lenmax = 12;
+ string_counter = 1;
+ counter = 0;
+ do
+ {
+ portnum_str[counter] = port_zstr[string_counter];
+
+ counter++;
+ string_counter++;
+ }
+ while((port_zstr[string_counter] != ',') && (string_counter <= lenmax));
+
+ portnum_str[counter] = '\0';
+
+ string_counter++;
+ counter = 0;
+
+ do
+ {
+ porttype_str[counter] = port_zstr[string_counter];
+
+ counter++;
+ string_counter++;
+ }
+ while((port_zstr[string_counter] != '}') && (string_counter <= lenmax));
+
+ porttype_str[counter] = '\0';
+
+ PortNum = atoi(portnum_str);
+ PortType = atoi(porttype_str);
+ }
+
+ // open a session
+ SessionHandle[portnum] = TMExtendedStartSession(PortNum,PortType,tmex_options);
+
+ // check the session handle
+ if (SessionHandle[portnum] <= 0)
+ {
+ OWERROR(OWERROR_GET_SYSTEM_RESOURCE_FAILED);
+ SessionHandle[portnum] = 0;
+ return -1;
+ }
+
+ // setup the port
+ if (TMSetup(SessionHandle[portnum]) != 1)
+ {
+ TMClose(SessionHandle[portnum]);
+ TMEndSession(SessionHandle[portnum]);
+ OWERROR(OWERROR_SYSTEM_RESOURCE_INIT_FAILED);
+ SessionHandle[portnum] = 0;
+ return -1;
+ }
+
+ return portnum;
+}
+
+//---------------------------------------------------------------------------
+// Attempt to acquire a 1-Wire net using a com port and a DS2480 based
+// adapter.
+//
+// 'portnum' - number 0 to MAX_PORTNUM-1. This number is provided to
+// indicate the symbolic port number.
+// 'port_zstr' - zero terminated port name. For this platform
+// use format COMX where X is the port number.
+//
+// Returns: TRUE - success, COM port opened
+//
+SMALLINT owAcquire(int portnum, char *port_zstr)
+{
+ int i;
+
+ if(!handle_init)
+ {
+ for(i=0; i<MAX_PORTNUM; i++)
+ SessionHandle[i] = 0;
+ handle_init = TRUE;
+ }
+
+ OWASSERT( portnum<MAX_PORTNUM && portnum>=0 && !SessionHandle[portnum],
+ OWERROR_PORTNUM_ERROR, FALSE );
+
+ // read the default PortNum and PortType
+ TMReadDefaultPort(&PortNum,&PortType);
+
+ // convert the string in port_zstr to be the port number
+ PortNum = atoi(port_zstr);
+
+ // open a session
+ SessionHandle[portnum] = TMExtendedStartSession(PortNum,PortType,NULL);
+
+ // check the session handle
+ if (SessionHandle[portnum] <= 0)
+ {
+ OWERROR(OWERROR_GET_SYSTEM_RESOURCE_FAILED);
+ SessionHandle[portnum] = 0;
+ return FALSE;
+ }
+
+ // setup the port
+ if (TMSetup(SessionHandle[portnum]) != 1)
+ {
+ TMClose(SessionHandle[portnum]);
+ TMEndSession(SessionHandle[portnum]);
+ OWERROR(OWERROR_SYSTEM_RESOURCE_INIT_FAILED);
+ SessionHandle[portnum] = 0;
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+//---------------------------------------------------------------------------
+// Release the previously acquired a 1-Wire net.
+//
+// 'portnum' - number 0 to MAX_PORTNUM-1. This number is provided to
+// indicate the symbolic port number.
+//
+void owRelease(int portnum)
+{
+ TMClose(SessionHandle[portnum]);
+ TMEndSession(SessionHandle[portnum]);
+ SessionHandle[portnum] = 0;
+}
+
tm3d / owSlave2.git / blobdiff