fan-board/Middlewares/Third_Party/FreeModbus/port/cmsis_rtos2/portevent.c

/*
 * FreeModbus Libary: CMSIS-RTOS2 Port
 * Copyright (C) 2013 Armink <armink.ztl@gmail.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * File: $Id: portevent.c,v 1.60 2013/08/13 15:07:05 Armink $
 *            portevent.c,v 1.60 2022/07/17          quanghona <lyhonquang@gmail.com> CMSIS-RTOS2 port $
 */

/* ----------------------- Modbus includes ----------------------------------*/
#include "mb.h"
#include "mbport.h"
#include "cmsis_os2.h"

/* ----------------------- Variables ----------------------------------------*/

/* ----------------------- Start implementation -----------------------------*/
BOOL
xMBPortEventInit(eMBRTUSlaveObj *obj) {
    obj->xEventFlagsId = osEventFlagsNew(NULL);
    return obj->xEventFlagsId != NULL;
}

BOOL
xMBPortEventPost(eMBRTUSlaveObj *obj, eMBEventType eEvent) {
    if (obj->xEventFlagsId != NULL) {
        return (osEventFlagsSet(obj->xEventFlagsId, eEvent) & 0x80000000) == 0;
    } else {
        return FALSE;
    }
}

BOOL
xMBPortEventGet(eMBRTUSlaveObj *obj, eMBEventType *eEvent) {
    uint32_t receivedEvent;
    const uint32_t EVENTS = EV_READY | EV_FRAME_RECEIVED | EV_EXECUTE | EV_FRAME_SENT;

    /* waiting forever OS event */
    receivedEvent = osEventFlagsWait(obj->xEventFlagsId, EVENTS, osFlagsWaitAny, osWaitForever);
    switch (receivedEvent) {
        case EV_READY:
            *eEvent = EV_READY;
            break;

        case EV_FRAME_RECEIVED:
            *eEvent = EV_FRAME_RECEIVED;
            break;

        case EV_EXECUTE:
            *eEvent = EV_EXECUTE;
            break;

        case EV_FRAME_SENT:
            *eEvent = EV_FRAME_SENT;
            break;

        default:
            return FALSE;
    }
    return TRUE;
}