mirror of
https://github.com/espressif/esp-idf.git
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d0b9829eef
Add TCP port files to provide Modbus TCP interface for communication Add freemodbus add tcp support for common master/slave iface and tcp example based on socket API The communication between master and slave checked for each example serial_master, serial_slave (use ModbusPoll TCP) update tcp example according netif changes, fix ci issues update TCP slave implementation update example_test.py to to set IP through stdin update API documentation event bit instead of semahore to lock communication resource update default options and master/slave port files Closes https://github.com/espressif/esp-idf/issues/858 Closes IDF-452
147 lines
4.3 KiB
C
147 lines
4.3 KiB
C
/* Copyright 2018 Espressif Systems (Shanghai) PTE LTD
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* FreeModbus Libary: RT-Thread Port
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* Copyright (C) 2013 Armink <armink.ztl@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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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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