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b8c1d26f56
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.
148 lines
4.5 KiB
C
148 lines
4.5 KiB
C
/*
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* SPDX-FileCopyrightText: 2013 Armink
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* SPDX-FileContributor: 2016-2021 Espressif Systems (Shanghai) CO LTD
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*/
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/*
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* FreeModbus Libary: ESP32 Port
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* Copyright (C) 2013 Armink <armink.ztl@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* IF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* File: $Id: port.c,v 1.60 2015/02/01 9:18:05 Armink $
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*/
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/* ----------------------- System includes --------------------------------*/
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/* ----------------------- Modbus includes ----------------------------------*/
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#include "freertos/FreeRTOS.h"
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#include "sys/lock.h"
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#include "port.h"
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/* ----------------------- Variables ----------------------------------------*/
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static _lock_t s_port_lock;
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static UCHAR ucPortMode = 0;
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/* ----------------------- Start implementation -----------------------------*/
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inline void
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vMBPortEnterCritical(void)
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{
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_lock_acquire(&s_port_lock);
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}
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inline void
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vMBPortExitCritical(void)
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{
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_lock_release(&s_port_lock);
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}
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UCHAR
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ucMBPortGetMode( void )
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{
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return ucPortMode;
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}
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void
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vMBPortSetMode( UCHAR ucMode )
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{
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ENTER_CRITICAL_SECTION();
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ucPortMode = ucMode;
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EXIT_CRITICAL_SECTION();
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}
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#if MB_TCP_DEBUG
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// This function is kept to realize legacy freemodbus frame logging functionality
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void
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prvvMBTCPLogFrame( const CHAR * pucMsg, UCHAR * pucFrame, USHORT usFrameLen )
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{
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int i;
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int res = 0;
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int iBufPos = 0;
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size_t iBufLeft = MB_TCP_FRAME_LOG_BUFSIZE;
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static CHAR arcBuffer[MB_TCP_FRAME_LOG_BUFSIZE];
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assert( pucFrame != NULL );
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for ( i = 0; i < usFrameLen; i++ ) {
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// Print some additional frame information.
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switch ( i )
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{
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case 0:
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// TID = Transaction Identifier.
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res = snprintf( &arcBuffer[iBufPos], iBufLeft, "| TID = " );
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break;
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case 2:
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// PID = Protocol Identifier.
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res = snprintf( &arcBuffer[iBufPos], iBufLeft, " | PID = " );
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break;
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case 4:
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// Length
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res = snprintf( &arcBuffer[iBufPos], iBufLeft, " | LEN = " );
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break;
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case 6:
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// UID = Unit Identifier.
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res = snprintf( &arcBuffer[iBufPos], iBufLeft, " | UID = " );
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break;
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case 7:
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// MB Function Code.
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res = snprintf( &arcBuffer[iBufPos], iBufLeft, " | FUNC = " );
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break;
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case 8:
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// MB PDU rest.
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res = snprintf( &arcBuffer[iBufPos], iBufLeft, " | DATA = " );
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break;
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default:
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res = 0;
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break;
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}
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if( res == -1 ) {
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break;
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}
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else {
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iBufPos += res;
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iBufLeft -= res;
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}
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// Print the data.
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res = snprintf( &arcBuffer[iBufPos], iBufLeft, "%02X", pucFrame[i] );
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if( res == -1 ) {
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break;
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} else {
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iBufPos += res;
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iBufLeft -= res;
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}
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}
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if( res != -1 ) {
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// Append an end of frame string.
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res = snprintf( &arcBuffer[iBufPos], iBufLeft, " |" );
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if( res != -1 ) {
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ESP_LOGD(pucMsg, "%s", arcBuffer);
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}
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}
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}
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#endif
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