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//---------------------------------------------------------------------------
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// Copyright (C) 2000 Dallas Semiconductor Corporation, All Rights Reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL DALLAS SEMICONDUCTOR BE LIABLE FOR ANY CLAIM, DAMAGES
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// OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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//
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// Except as contained in this notice, the name of Dallas Semiconductor
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// shall not be used except as stated in the Dallas Semiconductor
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// Branding Policy.
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//---------------------------------------------------------------------------
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//
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// TODO.C - COM functions required to communicate with the DS2480 based
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// Universal Serial Adapter 'U'. Fill in the platform specific code.
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//
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// Version: 2.00
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//
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// History: 1.00 -> 1.01 Added function msDelay.
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//
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// 1.01 -> 1.02 Changed to generic OpenCOM/CloseCOM for easier
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// use with other platforms.
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//
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// 1.02 -> 1.03 Removed caps in #includes for Linux capatibility
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// Add function msGettick()
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// 1.03 -> 2.00 Changed 'MLan' to 'ow'. Added support for
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// multiple ports.
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//
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#include "onewire_config.h"
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#include "ownet.h"
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#include "mbed.h"
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#include <string>
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using namespace std;
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Serial comport( ONEWIRE_TX , ONEWIRE_RX ); // tx, rx
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// exportable functions required
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SMALLINT OpenCOM(int,char *);
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SMALLINT WriteCOM(int,int,uchar *);
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void FlushCOM(int);
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int ReadCOM(int,int,uchar *);
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void BreakCOM(int);
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void SetBaudCOM(int,int);
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void CloseCOM(int);
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long msGettick(void);
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void msDelay(int);
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SMALLINT owHasPowerDelivery(int);
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SMALLINT owHasOverDrive(int);
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SMALLINT owHasProgramPulse(int);
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SMALLINT owWriteBytePower(int,SMALLINT);
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SMALLINT owReadBitPower(int,SMALLINT);
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//---------------------------------------------------------------------------
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// Attempt to open a com port. Keep the handle in ComID.
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// Set the starting baud rate to 9600.
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//
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// 'portnum' - number 0 to MAX_PORTNUM-1. This number provided will
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// be used to indicate the port number desired when calling
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// all other functions in this library.
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//
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// 'port_zstr' - zero terminate port name. For this platform
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// use format COMX where X is the port number.
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//
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//
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// Returns: TRUE(1) - success, COM port opened
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// FALSE(0) - failure, could not open specified port
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//
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SMALLINT OpenCOM(int portnum, char *port_zstr)
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{
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comport.baud( 9600);
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return 1;
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}
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//---------------------------------------------------------------------------
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// Attempt to open a com port. Keep the handle in ComID.
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// Set the starting baud rate to 9600.
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//
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// 'portnum' - number 0 to MAX_PORTNUM-1. This number provided will
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// be used to indicate the port number desired when calling
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// all other functions in this library.
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//
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//
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// Returns: the port number if it was successful otherwise -1
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//
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int OpenCOMEx(char *port_zstr)
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{
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int portnum = -1;
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if ( port_zstr[0] == '0')
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{
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portnum = 0;
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}
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if ( port_zstr[0] == '1')
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{
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portnum = 1;
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}
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if ( port_zstr[0] == '2')
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{
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portnum = 2;
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}
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if ( port_zstr[0] == '3')
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{
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portnum = 3;
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}
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if(!OpenCOM(portnum, port_zstr))
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{
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return -1;
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}
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return portnum;
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}
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//---------------------------------------------------------------------------
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// Closes the connection to the port.
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//
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// 'portnum' - number 0 to MAX_PORTNUM-1. This number was provided to
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// OpenCOM to indicate the port number.
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//
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void CloseCOM(int portnum)
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{
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// add platform specific code here - Done
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}
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//---------------------------------------------------------------------------
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// Flush the rx and tx buffers
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//
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// 'portnum' - number 0 to MAX_PORTNUM-1. This number was provided to
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// OpenCOM to indicate the port number.
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//
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void FlushCOM(int portnum)
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{
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// add platform specific code here - Done
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while( comport.readable() )
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{
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comport.getc();
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}
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}
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//--------------------------------------------------------------------------
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// Write an array of bytes to the COM port, verify that it was
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// sent out. Assume that baud rate has been set.
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//
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// 'portnum' - number 0 to MAX_PORTNUM-1. This number was provided to
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// OpenCOM to indicate the port number.
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// 'outlen' - number of bytes to write to COM port
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// 'outbuf' - pointer ot an array of bytes to write
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//
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// Returns: TRUE(1) - success
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// FALSE(0) - failure
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//
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SMALLINT WriteCOM(int portnum, int outlen, uchar *outbuf)
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{
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// add platform specific code here - Done
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for ( int x=0; x < outlen; x++ )
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{
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comport.putc( outbuf[x]);
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}
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while ( (LPC_UART3->LSR & 0x40) == 0 );
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{
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}
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/*
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printf ("\r\n Sent Data: ");
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for ( int x=0; x < outlen; x++ )
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{
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printf ( " %X ", outbuf[x] );
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}
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printf ("\r\n");
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*/
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return 1;
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}
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//--------------------------------------------------------------------------
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// Read an array of bytes from the COM port, verify that it was
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// received. Assume that baud rate has been set.
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//
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// 'portnum' - number 0 to MAX_PORTNUM-1. This number was provided to
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// OpenCOM to indicate the port number.
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// 'inlen' - number of bytes to read from COM port
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// 'inbuf' - pointer to a buffer to hold the incoming bytes
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//
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// Returns: number of characters read
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//
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int ReadCOM(int portnum, int inlen, unsigned char *inbuf)
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{
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// add platform specific code here - Done
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string buffer ("");
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Timer t;
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int numchar = 0;
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t.start(); // Start timeout timer
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while ( t.read_ms() < 1000 ) // If we haven't timed out....
|
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0:70c3bea805ee
|
217
|
{
|
svlach |
0:70c3bea805ee
|
218
|
if ( comport.readable() )
|
svlach |
0:70c3bea805ee
|
219
|
{
|
svlach |
0:70c3bea805ee
|
220
|
int read = comport.getc();
|
svlach |
0:70c3bea805ee
|
221
|
|
svlach |
0:70c3bea805ee
|
222
|
buffer += read;
|
svlach |
0:70c3bea805ee
|
223
|
numchar++;
|
svlach |
0:70c3bea805ee
|
224
|
t.reset();
|
svlach |
0:70c3bea805ee
|
225
|
}
|
svlach |
0:70c3bea805ee
|
226
|
|
svlach |
0:70c3bea805ee
|
227
|
if (numchar == inlen)
|
svlach |
0:70c3bea805ee
|
228
|
{
|
svlach |
0:70c3bea805ee
|
229
|
break;
|
svlach |
0:70c3bea805ee
|
230
|
}
|
svlach |
0:70c3bea805ee
|
231
|
}
|
svlach |
0:70c3bea805ee
|
232
|
|
svlach |
0:70c3bea805ee
|
233
|
buffer.copy( (char*)inbuf, numchar );
|
svlach |
0:70c3bea805ee
|
234
|
/*
|
svlach |
0:70c3bea805ee
|
235
|
printf ("\r\n Received Data: ");
|
svlach |
0:70c3bea805ee
|
236
|
for ( int x=0; x < numchar; x++ )
|
svlach |
0:70c3bea805ee
|
237
|
{
|
svlach |
0:70c3bea805ee
|
238
|
printf ( " %X ", inbuf[x] );
|
svlach |
0:70c3bea805ee
|
239
|
}
|
svlach |
0:70c3bea805ee
|
240
|
printf ("\r\n");
|
svlach |
0:70c3bea805ee
|
241
|
*/
|
svlach |
0:70c3bea805ee
|
242
|
return numchar;
|
svlach |
0:70c3bea805ee
|
243
|
}
|
svlach |
0:70c3bea805ee
|
244
|
|
svlach |
0:70c3bea805ee
|
245
|
|
svlach |
0:70c3bea805ee
|
246
|
//--------------------------------------------------------------------------
|
svlach |
0:70c3bea805ee
|
247
|
// Send a break on the com port for at least 2 ms
|
svlach |
0:70c3bea805ee
|
248
|
//
|
svlach |
0:70c3bea805ee
|
249
|
// 'portnum' - number 0 to MAX_PORTNUM-1. This number was provided to
|
svlach |
0:70c3bea805ee
|
250
|
// OpenCOM to indicate the port number.
|
svlach |
0:70c3bea805ee
|
251
|
//
|
svlach |
0:70c3bea805ee
|
252
|
void BreakCOM(int portnum)
|
svlach |
0:70c3bea805ee
|
253
|
{
|
svlach |
0:70c3bea805ee
|
254
|
// add platform specific code here - Done
|
svlach |
0:70c3bea805ee
|
255
|
int time_BREAK = 2;
|
svlach |
0:70c3bea805ee
|
256
|
|
svlach |
0:70c3bea805ee
|
257
|
// BREAK
|
svlach |
0:70c3bea805ee
|
258
|
LPC_UART3->LCR |= 0x40;
|
svlach |
0:70c3bea805ee
|
259
|
wait_ms( time_BREAK);
|
svlach |
0:70c3bea805ee
|
260
|
|
svlach |
0:70c3bea805ee
|
261
|
// MARK AFTER BREAK
|
svlach |
0:70c3bea805ee
|
262
|
LPC_UART3->LCR &= ~(0x40);
|
svlach |
0:70c3bea805ee
|
263
|
}
|
svlach |
0:70c3bea805ee
|
264
|
|
svlach |
0:70c3bea805ee
|
265
|
//--------------------------------------------------------------------------
|
svlach |
0:70c3bea805ee
|
266
|
// Set the baud rate on the com port.
|
svlach |
0:70c3bea805ee
|
267
|
//
|
svlach |
0:70c3bea805ee
|
268
|
// 'portnum' - number 0 to MAX_PORTNUM-1. This number was provided to
|
svlach |
0:70c3bea805ee
|
269
|
// OpenCOM to indicate the port number.
|
svlach |
0:70c3bea805ee
|
270
|
// 'new_baud' - new baud rate defined as
|
svlach |
0:70c3bea805ee
|
271
|
// PARMSET_9600 0x00
|
svlach |
0:70c3bea805ee
|
272
|
// PARMSET_19200 0x02
|
svlach |
0:70c3bea805ee
|
273
|
// PARMSET_57600 0x04
|
svlach |
0:70c3bea805ee
|
274
|
// PARMSET_115200 0x06
|
svlach |
0:70c3bea805ee
|
275
|
//
|
svlach |
0:70c3bea805ee
|
276
|
void SetBaudCOM(int portnum, int new_baud)
|
svlach |
0:70c3bea805ee
|
277
|
{
|
svlach |
0:70c3bea805ee
|
278
|
// add platform specific code here
|
svlach |
0:70c3bea805ee
|
279
|
}
|
svlach |
0:70c3bea805ee
|
280
|
|
svlach |
0:70c3bea805ee
|
281
|
//--------------------------------------------------------------------------
|
svlach |
0:70c3bea805ee
|
282
|
// Description:
|
svlach |
0:70c3bea805ee
|
283
|
// Delay for at least 'len' ms
|
svlach |
0:70c3bea805ee
|
284
|
//
|
svlach |
0:70c3bea805ee
|
285
|
void msDelay(int len)
|
svlach |
0:70c3bea805ee
|
286
|
{
|
svlach |
0:70c3bea805ee
|
287
|
// add platform specific code here
|
svlach |
0:70c3bea805ee
|
288
|
wait_ms( len );
|
svlach |
0:70c3bea805ee
|
289
|
}
|
svlach |
0:70c3bea805ee
|
290
|
|
svlach |
0:70c3bea805ee
|
291
|
//--------------------------------------------------------------------------
|
svlach |
0:70c3bea805ee
|
292
|
// Get the current millisecond tick count. Does not have to represent
|
svlach |
0:70c3bea805ee
|
293
|
// an actual time, it just needs to be an incrementing timer.
|
svlach |
0:70c3bea805ee
|
294
|
//
|
svlach |
0:70c3bea805ee
|
295
|
long msGettick(void)
|
svlach |
0:70c3bea805ee
|
296
|
{
|
svlach |
0:70c3bea805ee
|
297
|
// add platform specific code here
|
svlach |
0:70c3bea805ee
|
298
|
return 0;
|
svlach |
0:70c3bea805ee
|
299
|
}
|
svlach |
0:70c3bea805ee
|
300
|
|
svlach |
0:70c3bea805ee
|
301
|
/*
|
svlach |
0:70c3bea805ee
|
302
|
//--------------------------------------------------------------------------
|
svlach |
0:70c3bea805ee
|
303
|
// This procedure indicates wether the adapter can deliver power.
|
svlach |
0:70c3bea805ee
|
304
|
//
|
svlach |
0:70c3bea805ee
|
305
|
// 'portnum' - number 0 to MAX_PORTNUM-1. This number was provided to
|
svlach |
0:70c3bea805ee
|
306
|
// OpenCOM to indicate the port number.
|
svlach |
0:70c3bea805ee
|
307
|
//
|
svlach |
0:70c3bea805ee
|
308
|
// Returns: TRUE if adapter is capable of delivering power.
|
svlach |
0:70c3bea805ee
|
309
|
//
|
svlach |
0:70c3bea805ee
|
310
|
SMALLINT owHasPowerDelivery(int portnum)
|
svlach |
0:70c3bea805ee
|
311
|
{
|
svlach |
0:70c3bea805ee
|
312
|
// add adapter specific code here
|
svlach |
0:70c3bea805ee
|
313
|
return TRUE;
|
svlach |
0:70c3bea805ee
|
314
|
}
|
svlach |
0:70c3bea805ee
|
315
|
|
svlach |
0:70c3bea805ee
|
316
|
//--------------------------------------------------------------------------
|
svlach |
0:70c3bea805ee
|
317
|
// This procedure indicates wether the adapter can deliver power.
|
svlach |
0:70c3bea805ee
|
318
|
//
|
svlach |
0:70c3bea805ee
|
319
|
// 'portnum' - number 0 to MAX_PORTNUM-1. This number was provided to
|
svlach |
0:70c3bea805ee
|
320
|
// OpenCOM to indicate the port number.
|
svlach |
0:70c3bea805ee
|
321
|
//
|
svlach |
0:70c3bea805ee
|
322
|
// Returns: TRUE if adapter is capable of over drive.
|
svlach |
0:70c3bea805ee
|
323
|
//
|
svlach |
0:70c3bea805ee
|
324
|
SMALLINT owHasOverDrive(int portnum)
|
svlach |
0:70c3bea805ee
|
325
|
{
|
svlach |
0:70c3bea805ee
|
326
|
// add adapter specific code here
|
svlach |
0:70c3bea805ee
|
327
|
return TRUE;
|
svlach |
0:70c3bea805ee
|
328
|
}
|
svlach |
0:70c3bea805ee
|
329
|
//--------------------------------------------------------------------------
|
svlach |
0:70c3bea805ee
|
330
|
// This procedure creates a fixed 480 microseconds 12 volt pulse
|
svlach |
0:70c3bea805ee
|
331
|
// on the 1-Wire Net for programming EPROM iButtons.
|
svlach |
0:70c3bea805ee
|
332
|
//
|
svlach |
0:70c3bea805ee
|
333
|
// 'portnum' - number 0 to MAX_PORTNUM-1. This number was provided to
|
svlach |
0:70c3bea805ee
|
334
|
// OpenCOM to indicate the port number.
|
svlach |
0:70c3bea805ee
|
335
|
//
|
svlach |
0:70c3bea805ee
|
336
|
// Returns: TRUE program volatage available
|
svlach |
0:70c3bea805ee
|
337
|
// FALSE program voltage not available
|
svlach |
0:70c3bea805ee
|
338
|
SMALLINT owHasProgramPulse(int portnum)
|
svlach |
0:70c3bea805ee
|
339
|
{
|
svlach |
0:70c3bea805ee
|
340
|
// add adapter specific code here
|
svlach |
0:70c3bea805ee
|
341
|
return TRUE;
|
svlach |
0:70c3bea805ee
|
342
|
}
|
svlach |
1:dcf2f8359398
|
343
|
|
svlach |
1:dcf2f8359398
|
344
|
|
svlach |
0:70c3bea805ee
|
345
|
//--------------------------------------------------------------------------
|
svlach |
0:70c3bea805ee
|
346
|
// Send 8 bits of communication to the 1-Wire Net and verify that the
|
svlach |
0:70c3bea805ee
|
347
|
// 8 bits read from the 1-Wire Net is the same (write operation).
|
svlach |
0:70c3bea805ee
|
348
|
// The parameter 'sendbyte' least significant 8 bits are used. After the
|
svlach |
0:70c3bea805ee
|
349
|
// 8 bits are sent change the level of the 1-Wire net.
|
svlach |
0:70c3bea805ee
|
350
|
//
|
svlach |
0:70c3bea805ee
|
351
|
// 'portnum' - number 0 to MAX_PORTNUM-1. This number was provided to
|
svlach |
0:70c3bea805ee
|
352
|
// OpenCOM to indicate the port number.
|
svlach |
0:70c3bea805ee
|
353
|
// 'sendbyte' - 8 bits to send (least significant byte)
|
svlach |
0:70c3bea805ee
|
354
|
//
|
svlach |
0:70c3bea805ee
|
355
|
// Returns: TRUE: bytes written and echo was the same
|
svlach |
0:70c3bea805ee
|
356
|
// FALSE: echo was not the same
|
svlach |
0:70c3bea805ee
|
357
|
//
|
svlach |
0:70c3bea805ee
|
358
|
SMALLINT owWriteBytePower(int portnum, SMALLINT sendbyte)
|
svlach |
0:70c3bea805ee
|
359
|
{
|
svlach |
0:70c3bea805ee
|
360
|
// replace if platform has better implementation (faster response)
|
svlach |
1:dcf2f8359398
|
361
|
if (!owHasPowerDelivery(portnum))
|
svlach |
0:70c3bea805ee
|
362
|
return FALSE;
|
svlach |
0:70c3bea805ee
|
363
|
|
svlach |
0:70c3bea805ee
|
364
|
if(owTouchByte(portnum,sendbyte) != sendbyte)
|
svlach |
0:70c3bea805ee
|
365
|
return FALSE;
|
svlach |
0:70c3bea805ee
|
366
|
|
svlach |
0:70c3bea805ee
|
367
|
if(owLevel(portnum,MODE_STRONG5) != MODE_STRONG5)
|
svlach |
0:70c3bea805ee
|
368
|
return FALSE;
|
svlach |
0:70c3bea805ee
|
369
|
|
svlach |
0:70c3bea805ee
|
370
|
return TRUE;
|
svlach |
0:70c3bea805ee
|
371
|
}
|
svlach |
1:dcf2f8359398
|
372
|
|
svlach |
1:dcf2f8359398
|
373
|
|
svlach |
0:70c3bea805ee
|
374
|
//--------------------------------------------------------------------------
|
svlach |
0:70c3bea805ee
|
375
|
// Send 1 bit of communication to the 1-Wire Net and verify that the
|
svlach |
0:70c3bea805ee
|
376
|
// response matches the 'applyPowerResponse' bit and apply power delivery
|
svlach |
0:70c3bea805ee
|
377
|
// to the 1-Wire net. Note that some implementations may apply the power
|
svlach |
0:70c3bea805ee
|
378
|
// first and then turn it off if the response is incorrect.
|
svlach |
0:70c3bea805ee
|
379
|
//
|
svlach |
0:70c3bea805ee
|
380
|
// 'portnum' - number 0 to MAX_PORTNUM-1. This number was provided to
|
svlach |
0:70c3bea805ee
|
381
|
// OpenCOM to indicate the port number.
|
svlach |
0:70c3bea805ee
|
382
|
// 'applyPowerResponse' - 1 bit response to check, if correct then start
|
svlach |
0:70c3bea805ee
|
383
|
// power delivery
|
svlach |
0:70c3bea805ee
|
384
|
//
|
svlach |
0:70c3bea805ee
|
385
|
// Returns: TRUE: bit written and response correct, strong pullup now on
|
svlach |
0:70c3bea805ee
|
386
|
// FALSE: response incorrect
|
svlach |
0:70c3bea805ee
|
387
|
//
|
svlach |
0:70c3bea805ee
|
388
|
SMALLINT owReadBitPower(int portnum, SMALLINT applyPowerResponse)
|
svlach |
0:70c3bea805ee
|
389
|
{
|
svlach |
0:70c3bea805ee
|
390
|
// replace if platform has better implementation (faster response)
|
svlach |
1:dcf2f8359398
|
391
|
if (!owHasPowerDelivery(portnum))
|
svlach |
0:70c3bea805ee
|
392
|
return FALSE;
|
svlach |
0:70c3bea805ee
|
393
|
|
svlach |
0:70c3bea805ee
|
394
|
if(owTouchBit(portnum,0x01) != applyPowerResponse)
|
svlach |
0:70c3bea805ee
|
395
|
return FALSE;
|
svlach |
0:70c3bea805ee
|
396
|
|
svlach |
0:70c3bea805ee
|
397
|
if(owLevel(portnum,MODE_STRONG5) != MODE_STRONG5)
|
svlach |
0:70c3bea805ee
|
398
|
return FALSE;
|
svlach |
0:70c3bea805ee
|
399
|
|
svlach |
0:70c3bea805ee
|
400
|
return TRUE;
|
svlach |
0:70c3bea805ee
|
401
|
}
|
svlach |
1:dcf2f8359398
|
402
|
|
svlach |
1:dcf2f8359398
|
403
|
*/ |