b28b62b194
drop uart ll driver fix: soc: prevent speculative reads from FIFO at -O2 optimization (new compiler fixes this issue)
132 lines
4.3 KiB
C
132 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: ESP32 Port Demo Application
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* Copyright (C) 2010 Christian Walter <cwalter@embedded-solutions.at>
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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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*
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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: portevent.c,v 1.1 2010/06/06 13:07:20 wolti Exp $
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*/
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/* ----------------------- System includes ----------------------------------*/
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#include <freertos/FreeRTOS.h>
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#include <freertos/task.h>
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#include <freertos/queue.h>
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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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#include "sdkconfig.h"
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#include "port_serial_slave.h"
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/* ----------------------- Variables ----------------------------------------*/
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static xQueueHandle xQueueHdl;
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#define MB_EVENT_QUEUE_SIZE (6)
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#define MB_EVENT_QUEUE_TIMEOUT (pdMS_TO_TICKS(CONFIG_FMB_EVENT_QUEUE_TIMEOUT))
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/* ----------------------- Start implementation -----------------------------*/
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BOOL
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xMBPortEventInit( void )
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{
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BOOL bStatus = FALSE;
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if((xQueueHdl = xQueueCreate(MB_EVENT_QUEUE_SIZE, sizeof(eMBEventType))) != NULL)
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{
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vQueueAddToRegistry(xQueueHdl, "MbPortEventQueue");
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bStatus = TRUE;
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}
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return bStatus;
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}
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void
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vMBPortEventClose( void )
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{
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if(xQueueHdl != NULL)
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{
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vQueueDelete(xQueueHdl);
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xQueueHdl = NULL;
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}
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}
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BOOL MB_PORT_ISR_ATTR
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xMBPortEventPost( eMBEventType eEvent )
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{
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BaseType_t xStatus, xHigherPriorityTaskWoken = pdFALSE;
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assert(xQueueHdl != NULL);
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if( (BOOL)xPortInIsrContext() == TRUE )
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{
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xStatus = xQueueSendFromISR(xQueueHdl, (const void*)&eEvent, &xHigherPriorityTaskWoken);
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if ( xHigherPriorityTaskWoken )
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{
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portYIELD_FROM_ISR();
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}
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if (xStatus != pdTRUE) {
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ESP_EARLY_LOGV(MB_PORT_TAG, "%s: Post message failure = %d.", __func__, xStatus);
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return FALSE;
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}
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}
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else
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{
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xStatus = xQueueSend(xQueueHdl, (const void*)&eEvent, MB_EVENT_QUEUE_TIMEOUT);
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MB_PORT_CHECK((xStatus == pdTRUE), FALSE, "%s: Post message failure.", __func__);
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}
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return TRUE;
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}
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BOOL
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xMBPortEventGet(eMBEventType * peEvent)
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{
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assert(xQueueHdl != NULL);
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BOOL xEventHappened = FALSE;
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if (xQueueReceive(xQueueHdl, peEvent, portMAX_DELAY) == pdTRUE) {
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xEventHappened = TRUE;
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}
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return xEventHappened;
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}
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xQueueHandle
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xMBPortEventGetHandle(void)
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{
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if(xQueueHdl != NULL)
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{
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return xQueueHdl;
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}
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return NULL;
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}
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