--- /dev/null
+//---------------------------------------------------------------------------
+// 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.
+//---------------------------------------------------------------------------
+//
+// tmexnet.C - Wrapper class to hook 1-Wire Public Domain API to TMEX API
+// for transport functions.
+//
+// Version: 3.00
+//
+
+#include "ownet.h"
+#include <windows.h>
+
+// external TMEX variables
+extern long SessionHandle[MAX_PORTNUM];
+extern short far pascal TMBlockIO(long, uchar *, short);
+extern short far pascal TMBlockStream(long, uchar *, short);
+
+//--------------------------------------------------------------------------
+// The 'owBlock' transfers a block of data to and from the
+// 1-Wire Net with an optional reset at the begining of communication.
+// The result is returned in the same buffer.
+//
+// 'do_reset' - cause a owTouchReset to occure at the begining of
+// communication TRUE(1) or not FALSE(0)
+// 'tran_buf' - pointer to a block of unsigned
+// chars of length 'TranferLength' that will be sent
+// to the 1-Wire Net
+// 'tran_len' - length in bytes to transfer
+// Supported devices: all
+//
+// Returns: TRUE (1) : The optional reset returned a valid
+// presence (do_reset == TRUE) or there
+// was no reset required.
+// FALSE (0): The reset did not return a valid prsence
+// (do_reset == TRUE).
+//
+// The maximum tran_len is 64
+//
+SMALLINT owBlock(int portnum, SMALLINT do_reset, uchar *tran_buf, SMALLINT tran_len)
+{
+ short rslt;
+
+ // check for a block too big
+ if (tran_len > 192)
+ {
+ OWERROR(OWERROR_BLOCK_TOO_BIG);
+ return FALSE;
+ }
+
+ // check if need to do a owTouchReset first
+ if (do_reset)
+ rslt = TMBlockIO(SessionHandle[portnum], tran_buf, (short)tran_len);
+ else
+ rslt = TMBlockStream(SessionHandle[portnum], tran_buf, (short)tran_len);
+
+ return (rslt == tran_len);
+}
+
+//--------------------------------------------------------------------------
+// Write a byte to an EPROM 1-Wire device.
+//
+// Supported devices: crc_type=0(CRC8)
+// DS1982
+// crc_type=1(CRC16)
+// DS1985, DS1986, DS2407
+//
+// 'portnum' - number 0 to MAX_PORTNUM-1. This number is provided to
+// indicate the symbolic port number.
+// 'write_byte' - byte to program
+// 'addr' - address of byte to program
+// 'write_cmd' - command used to write (0x0F reg mem, 0x55 status)
+// 'crc_type' - CRC used (0 CRC8, 1 CRC16)
+// 'do_access' - Flag to access device for each byte
+// (0 skip access, 1 do the access)
+// WARNING, only use do_access=0 if programing the NEXT
+// byte immediatly after the previous byte.
+//
+// Returns: >=0 success, this is the resulting byte from the program
+// effort
+// -1 error, device not connected or program pulse voltage
+// not available
+//
+SMALLINT owProgramByte(int portnum, SMALLINT write_byte, int addr, SMALLINT write_cmd,
+ SMALLINT crc_type, SMALLINT do_access)
+{
+ ushort lastcrc16;
+ uchar lastcrc8;
+
+ // optionally access the device
+ if (do_access)
+ {
+ if (!owAccess(portnum))
+ {
+ OWERROR(OWERROR_ACCESS_FAILED);
+ return -1;
+ }
+
+ // send the write command
+ if (!owWriteByte(portnum,write_cmd))
+ {
+ OWERROR(OWERROR_WRITE_BYTE_FAILED);
+ return -1;
+ }
+
+ // send the address
+ if (!owWriteByte(portnum,addr & 0xFF) || !owWriteByte(portnum,addr >> 8))
+ {
+ OWERROR(OWERROR_WRITE_BYTE_FAILED);
+ return -1;
+ }
+ }
+
+ // send the data to write
+ if (!owWriteByte(portnum,write_byte))
+ {
+ OWERROR(OWERROR_WRITE_BYTE_FAILED);
+ return -1;
+ }
+
+ // read the CRC
+ if (crc_type == 0)
+ {
+ // calculate CRC8
+ if (do_access)
+ {
+ setcrc8(portnum,0);
+ docrc8(portnum,(uchar)write_cmd);
+ docrc8(portnum,(uchar)(addr & 0xFF));
+ docrc8(portnum,(uchar)(addr >> 8));
+ }
+ else
+ setcrc8(portnum,(uchar)(addr & 0xFF));
+
+ docrc8(portnum,(uchar)write_byte);
+ // read and calculate the read crc
+ lastcrc8 = docrc8(portnum,(uchar)owReadByte(portnum));
+ // crc should now be 0x00
+ if (lastcrc8 != 0)
+ {
+ OWERROR(OWERROR_CRC_FAILED);
+ return -1;
+ }
+ }
+ else
+ {
+ // CRC16
+ if (do_access)
+ {
+ setcrc16(portnum,0);
+ docrc16(portnum,(ushort)write_cmd);
+ docrc16(portnum,(ushort)(addr & 0xFF));
+ docrc16(portnum,(ushort)(addr >> 8));
+ }
+ else
+ setcrc16(portnum,(ushort)addr);
+ docrc16(portnum,(ushort)write_byte);
+ // read and calculate the read crc
+ docrc16(portnum,(ushort)owReadByte(portnum));
+ lastcrc16 = docrc16(portnum,(ushort)owReadByte(portnum));
+ // crc should now be 0xB001
+ if (lastcrc16 != 0xB001)
+ return -1;
+ }
+
+ // send the program pulse
+ if (!owProgramPulse(portnum))
+ {
+ OWERROR(OWERROR_PROGRAM_PULSE_FAILED);
+ return -1;
+ }
+
+ // read back and return the resulting byte
+ return owReadByte(portnum);
+}
+
+
tm3d / owSlave2.git / blobdiff