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managed_components/espressif__esp-modbus/freemodbus/port/portevent.c

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+/*
+ * SPDX-FileCopyrightText: 2010 Christian Walter
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * SPDX-FileContributor: 2016-2022 Espressif Systems (Shanghai) CO LTD
+ */
+/*
+ * FreeModbus Libary: ESP32 Port Demo Application
+ * Copyright (C) 2010 Christian Walter <cwalter@embedded-solutions.at>
+ *
+ * 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: portevent.c,v 1.1 2010/06/06 13:07:20 wolti Exp $
+ */
+
+/* ----------------------- System includes ----------------------------------*/
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+#include <freertos/queue.h>
+
+/* ----------------------- Modbus includes ----------------------------------*/
+#include "mb.h"
+#include "mbport.h"
+#include "port.h"
+#include "mbconfig.h"
+#include "port_serial_slave.h"
+/* ----------------------- Variables ----------------------------------------*/
+static QueueHandle_t xQueueHdl;
+
+/* ----------------------- Start implementation -----------------------------*/
+BOOL
+xMBPortEventInit( void )
+{
+    BOOL bStatus = FALSE;
+    if((xQueueHdl = xQueueCreate(MB_EVENT_QUEUE_SIZE, sizeof(eMBEventType))) != NULL)
+    {
+        vQueueAddToRegistry(xQueueHdl, "MbPortEventQueue");
+        bStatus = TRUE;
+    }
+    return bStatus;
+}
+
+void
+vMBPortEventClose( void )
+{
+    if(xQueueHdl != NULL)
+    {
+        vQueueDelete(xQueueHdl);
+        xQueueHdl = NULL;
+    }
+}
+
+BOOL MB_PORT_ISR_ATTR
+xMBPortEventPost( eMBEventType eEvent )
+{
+    BaseType_t xStatus, xHigherPriorityTaskWoken = pdFALSE;
+    assert(xQueueHdl != NULL);
+
+    if( (BOOL)xPortInIsrContext() == TRUE )
+    {
+        xStatus = xQueueSendFromISR(xQueueHdl, (const void*)&eEvent, &xHigherPriorityTaskWoken);
+        if ( xHigherPriorityTaskWoken )
+        {
+            portYIELD_FROM_ISR();
+        }
+        if (xStatus != pdTRUE) {
+            ESP_EARLY_LOGV(MB_PORT_TAG, "%s: Post message failure = %u.", __func__, (unsigned)xStatus);
+            return FALSE;
+        }
+    }
+    else
+    {
+        xStatus = xQueueSend(xQueueHdl, (const void*)&eEvent, MB_EVENT_QUEUE_TIMEOUT);
+        MB_PORT_CHECK((xStatus == pdTRUE), FALSE, "%s: Post message failure.", __func__);
+    }
+    return TRUE;
+}
+
+BOOL
+xMBPortEventGet(eMBEventType * peEvent)
+{
+    assert(xQueueHdl != NULL);
+    BOOL xEventHappened = FALSE;
+
+    if (xQueueReceive(xQueueHdl, peEvent, portMAX_DELAY) == pdTRUE) {
+        xEventHappened = TRUE;
+    }
+    return xEventHappened;
+}
+
+QueueHandle_t
+xMBPortEventGetHandle(void)
+{
+    if(xQueueHdl != NULL)
+    {
+        return xQueueHdl;
+    }
+    return NULL;
+}