mirror of
https://github.com/armink/FreeModbus_Slave-Master-RTT-STM32.git
synced 2025-03-02 05:15:15 +08:00
99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
/*
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* FreeModbus Libary: STM32 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: $Id: portevent_m.c v 1.60 2013/08/13 15:07:05 Armink add Master Functions$
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*/
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/* ----------------------- Modbus includes ----------------------------------*/
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#include "mb.h"
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#include "mbport.h"
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#include "port.h"
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#if MB_MASTER_RTU_ENABLED > 0 || MB_MASTER_ASCII_ENABLED > 0
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/* ----------------------- Variables ----------------------------------------*/
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static eMBMasterEventType eMasterQueuedEvent;
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static BOOL xMasterEventInQueue;
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static struct rt_semaphore xMasterRunRes;
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/* ----------------------- Start implementation -----------------------------*/
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BOOL
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xMBMasterPortEventInit( void )
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{
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xMasterEventInQueue = FALSE;
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return TRUE;
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}
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BOOL
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xMBMasterPortEventPost( eMBMasterEventType eEvent )
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{
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xMasterEventInQueue = TRUE;
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eMasterQueuedEvent = eEvent;
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return TRUE;
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}
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BOOL
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xMBMasterPortEventGet( eMBMasterEventType * eEvent )
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{
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BOOL xEventHappened = FALSE;
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if( xMasterEventInQueue )
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{
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*eEvent = eMasterQueuedEvent;
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xMasterEventInQueue = FALSE;
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xEventHappened = TRUE;
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}
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return xEventHappened;
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}
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/**
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* This function is initialize the Mobus Master running resource .
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* Note:The resource is define by Operating System.If you not use Opearting System this function can be empty.
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*
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*/
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void vMBMasterRunResInit( void )
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{
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rt_sem_init(&xMasterRunRes, "master res", 0x01 , RT_IPC_FLAG_PRIO);
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}
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/**
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* This function is take Mobus Master running resource.
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* Note:The resource is define by Operating System.If you not use Opearting System this function can be just return TRUE.
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*
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* @param lTimeOut the waiting time.
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*
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* @return resource taked result
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*/
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BOOL xMBMasterRunResTake( LONG lTimeOut )
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{
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/*If waiting time is -1 .It will wait forever */
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return rt_sem_take(&xMasterRunRes, lTimeOut) ? FALSE : TRUE ;
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}
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/**
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* This function is release Mobus Master running resource.
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* Note:The resource is define by Operating System.If you not use Opearting System this function can be empty.
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*
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*/
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void vMBMasterRunResRelease( void )
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{
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/* release resource */
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rt_sem_release(&xMasterRunRes);
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}
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#endif
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