esp-idf/components/freemodbus/port/port.c
aleks b8c1d26f56 freemodbus: fix port contains lgpl licensed files
Initial version of freemodbus master port files have been added to ESP-IDF based on https://github.com/armink/FreeModbus_Slave-Master-RTT-STM32.
The overall repository license, at the time of adding these files, has been BSD 3-clause. However at that time, several port files carried LGPL license headers. As the author of these files confirmed in https://github.com/armink/FreeModbus_Slave-Master-RTT-STM32/issues/61#issuecomment-977828450, this wasn't intentional. ESP-IDF version of modbus master port has been rewritten to target FreeRTOS instead of RT-Thread, but the license headers remained from the original version. This commit corrects this, replacing the license of these files with BSD 3-clause.
2021-11-29 12:50:53 +01:00

148 lines
4.5 KiB
C

/*
* SPDX-FileCopyrightText: 2013 Armink
*
* SPDX-License-Identifier: BSD-3-Clause
*
* SPDX-FileContributor: 2016-2021 Espressif Systems (Shanghai) CO LTD
*/
/*
* FreeModbus Libary: ESP32 Port
* Copyright (C) 2013 Armink <armink.ztl@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* IF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* File: $Id: port.c,v 1.60 2015/02/01 9:18:05 Armink $
*/
/* ----------------------- System includes --------------------------------*/
/* ----------------------- Modbus includes ----------------------------------*/
#include "freertos/FreeRTOS.h"
#include "sys/lock.h"
#include "port.h"
/* ----------------------- Variables ----------------------------------------*/
static _lock_t s_port_lock;
static UCHAR ucPortMode = 0;
/* ----------------------- Start implementation -----------------------------*/
inline void
vMBPortEnterCritical(void)
{
_lock_acquire(&s_port_lock);
}
inline void
vMBPortExitCritical(void)
{
_lock_release(&s_port_lock);
}
UCHAR
ucMBPortGetMode( void )
{
return ucPortMode;
}
void
vMBPortSetMode( UCHAR ucMode )
{
ENTER_CRITICAL_SECTION();
ucPortMode = ucMode;
EXIT_CRITICAL_SECTION();
}
#if MB_TCP_DEBUG
// This function is kept to realize legacy freemodbus frame logging functionality
void
prvvMBTCPLogFrame( const CHAR * pucMsg, UCHAR * pucFrame, USHORT usFrameLen )
{
int i;
int res = 0;
int iBufPos = 0;
size_t iBufLeft = MB_TCP_FRAME_LOG_BUFSIZE;
static CHAR arcBuffer[MB_TCP_FRAME_LOG_BUFSIZE];
assert( pucFrame != NULL );
for ( i = 0; i < usFrameLen; i++ ) {
// Print some additional frame information.
switch ( i )
{
case 0:
// TID = Transaction Identifier.
res = snprintf( &arcBuffer[iBufPos], iBufLeft, "| TID = " );
break;
case 2:
// PID = Protocol Identifier.
res = snprintf( &arcBuffer[iBufPos], iBufLeft, " | PID = " );
break;
case 4:
// Length
res = snprintf( &arcBuffer[iBufPos], iBufLeft, " | LEN = " );
break;
case 6:
// UID = Unit Identifier.
res = snprintf( &arcBuffer[iBufPos], iBufLeft, " | UID = " );
break;
case 7:
// MB Function Code.
res = snprintf( &arcBuffer[iBufPos], iBufLeft, " | FUNC = " );
break;
case 8:
// MB PDU rest.
res = snprintf( &arcBuffer[iBufPos], iBufLeft, " | DATA = " );
break;
default:
res = 0;
break;
}
if( res == -1 ) {
break;
}
else {
iBufPos += res;
iBufLeft -= res;
}
// Print the data.
res = snprintf( &arcBuffer[iBufPos], iBufLeft, "%02X", pucFrame[i] );
if( res == -1 ) {
break;
} else {
iBufPos += res;
iBufLeft -= res;
}
}
if( res != -1 ) {
// Append an end of frame string.
res = snprintf( &arcBuffer[iBufPos], iBufLeft, " |" );
if( res != -1 ) {
ESP_LOGD(pucMsg, "%s", arcBuffer);
}
}
}
#endif