286 lines
12 KiB
C
286 lines
12 KiB
C
/* Copyright 2018 Espressif Systems (Shanghai) PTE LTD
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
/*
|
|
* FreeModbus Libary: ESP32 Port Demo Application
|
|
* 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: $Id: portevent.c v 1.60 2013/08/13 15:07:05 Armink add Master Functions$
|
|
*/
|
|
|
|
/* ----------------------- Modbus includes ----------------------------------*/
|
|
#include "mb_m.h"
|
|
#include "mbport.h"
|
|
#include "mbconfig.h"
|
|
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
#include "freertos/event_groups.h"
|
|
#include "port.h"
|
|
#include "mbport.h"
|
|
#include "freertos/semphr.h"
|
|
#include "port_serial_master.h"
|
|
|
|
#if MB_MASTER_RTU_ENABLED || MB_MASTER_ASCII_ENABLED
|
|
/* ----------------------- Defines ------------------------------------------*/
|
|
// Event bit mask for xMBMasterPortEventGet()
|
|
#define MB_EVENT_POLL_MASK (EventBits_t)( EV_MASTER_READY | \
|
|
EV_MASTER_FRAME_RECEIVED | \
|
|
EV_MASTER_EXECUTE | \
|
|
EV_MASTER_FRAME_SENT | \
|
|
EV_MASTER_FRAME_TRANSMIT | \
|
|
EV_MASTER_ERROR_PROCESS )
|
|
|
|
// Event bit mask for eMBMasterWaitRequestFinish()
|
|
#define MB_EVENT_REQ_MASK (EventBits_t)( EV_MASTER_PROCESS_SUCCESS | \
|
|
EV_MASTER_ERROR_RESPOND_TIMEOUT | \
|
|
EV_MASTER_ERROR_RECEIVE_DATA | \
|
|
EV_MASTER_ERROR_EXECUTE_FUNCTION )
|
|
|
|
#define MB_CHECK_EVENT(event, mask) (event & mask)
|
|
|
|
/* ----------------------- Variables ----------------------------------------*/
|
|
static SemaphoreHandle_t xSemaphorMasterHdl;
|
|
static EventGroupHandle_t xEventGroupMasterHdl;
|
|
|
|
/* ----------------------- Start implementation -----------------------------*/
|
|
|
|
BOOL
|
|
xMBMasterPortEventInit( void )
|
|
{
|
|
xEventGroupMasterHdl = xEventGroupCreate();
|
|
MB_PORT_CHECK((xEventGroupMasterHdl != NULL),
|
|
FALSE, "mb stack event group creation error.");
|
|
return TRUE;
|
|
}
|
|
|
|
BOOL MB_PORT_ISR_ATTR
|
|
xMBMasterPortEventPost( eMBMasterEventType eEvent )
|
|
{
|
|
BOOL bStatus = FALSE;
|
|
eMBMasterEventType eTempEvent = eEvent;
|
|
|
|
if( (BOOL)xPortInIsrContext() == TRUE )
|
|
{
|
|
BaseType_t xHigherPriorityTaskWoken = pdFALSE;
|
|
BaseType_t xResult = xEventGroupSetBitsFromISR( xEventGroupMasterHdl,
|
|
(EventBits_t) eTempEvent,
|
|
&xHigherPriorityTaskWoken );
|
|
// Was the message posted successfully?
|
|
if( xResult == pdPASS ) {
|
|
// If xHigherPriorityTaskWoken is now set to pdTRUE
|
|
// then a context switch should be requested.
|
|
if (xHigherPriorityTaskWoken) portYIELD_FROM_ISR();
|
|
bStatus = TRUE;
|
|
} else {
|
|
bStatus = FALSE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Set event bits if the function is called from task
|
|
// The return result is not checked here because
|
|
// It might be that event bit was cleared automatically as a
|
|
// task that was waiting for the bit was removed from the Blocked state.
|
|
(void) xEventGroupSetBits( xEventGroupMasterHdl, (EventBits_t)eTempEvent );
|
|
bStatus = TRUE;
|
|
}
|
|
return bStatus;
|
|
}
|
|
|
|
BOOL
|
|
xMBMasterPortEventGet( eMBMasterEventType * eEvent)
|
|
{
|
|
EventBits_t uxBits;
|
|
BOOL xEventHappened = FALSE;
|
|
uxBits = xEventGroupWaitBits(
|
|
xEventGroupMasterHdl, // The event group being tested.
|
|
MB_EVENT_POLL_MASK, // The bits within the event group to wait for.
|
|
pdTRUE, // Masked bits should be cleared before returning.
|
|
pdFALSE, // Don't wait for both bits, either bit will do.
|
|
portMAX_DELAY); // Wait forever for either bit to be set.
|
|
|
|
// Check if poll event is correct
|
|
if (uxBits & MB_EVENT_POLL_MASK) {
|
|
*eEvent = (eMBMasterEventType)(uxBits);
|
|
xEventHappened = TRUE;
|
|
} else {
|
|
ESP_LOGE(MB_PORT_TAG,"%s: Incorrect event triggered = %d.", __func__, uxBits);
|
|
xEventHappened = FALSE;
|
|
}
|
|
return xEventHappened;
|
|
}
|
|
|
|
// This function is initialize the OS resource for modbus master.
|
|
void vMBMasterOsResInit( void )
|
|
{
|
|
xSemaphorMasterHdl = xSemaphoreCreateBinary();
|
|
MB_PORT_CHECK((xSemaphorMasterHdl != NULL), ; , "%s: OS semaphore create error.", __func__);
|
|
}
|
|
|
|
/**
|
|
* This function is take Mobus Master running resource.
|
|
* Note:The resource is define by Operating System.
|
|
*
|
|
* @param lTimeOut the waiting time.
|
|
*
|
|
* @return resource take result
|
|
*/
|
|
BOOL xMBMasterRunResTake( LONG lTimeOut )
|
|
{
|
|
BaseType_t xStatus = pdTRUE;
|
|
|
|
// If waiting time is -1. It will wait forever
|
|
xStatus = xSemaphoreTake(xSemaphorMasterHdl, lTimeOut );
|
|
MB_PORT_CHECK((xStatus == pdTRUE), FALSE , "%s:Take resource failure.", __func__);
|
|
ESP_LOGV(MB_PORT_TAG,"%s:Take resource (%lu ticks).", __func__, lTimeOut);
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* This function is release Mobus Master running resource.
|
|
* Note:The resource is define by Operating System.If you not use OS this function can be empty.
|
|
*/
|
|
void vMBMasterRunResRelease( void )
|
|
{
|
|
BaseType_t xStatus = pdFALSE;
|
|
xStatus = xSemaphoreGive(xSemaphorMasterHdl);
|
|
MB_PORT_CHECK((xStatus == pdTRUE), ; , "%s: resource release failure.", __func__);
|
|
}
|
|
|
|
/**
|
|
* This is modbus master respond timeout error process callback function.
|
|
* @note There functions will block modbus master poll while execute OS waiting.
|
|
*
|
|
* @param ucDestAddress destination salve address
|
|
* @param pucPDUData PDU buffer data
|
|
* @param ucPDULength PDU buffer length
|
|
*
|
|
*/
|
|
void vMBMasterErrorCBRespondTimeout(UCHAR ucDestAddress, const UCHAR* pucPDUData, USHORT ucPDULength)
|
|
{
|
|
BOOL ret = xMBMasterPortEventPost(EV_MASTER_ERROR_RESPOND_TIMEOUT);
|
|
MB_PORT_CHECK((ret == TRUE), ; , "%s: Post event 'EV_MASTER_ERROR_RESPOND_TIMEOUT' failed!", __func__);
|
|
ESP_LOGD(MB_PORT_TAG,"%s:Callback respond timeout.", __func__);
|
|
}
|
|
|
|
/**
|
|
* This is modbus master receive data error process callback function.
|
|
* @note There functions will block modbus master poll while execute OS waiting.
|
|
*
|
|
* @param ucDestAddress destination salve address
|
|
* @param pucPDUData PDU buffer data
|
|
* @param ucPDULength PDU buffer length
|
|
*/
|
|
void vMBMasterErrorCBReceiveData(UCHAR ucDestAddress, const UCHAR* pucPDUData, USHORT ucPDULength)
|
|
{
|
|
BOOL ret = xMBMasterPortEventPost(EV_MASTER_ERROR_RECEIVE_DATA);
|
|
MB_PORT_CHECK((ret == TRUE), ; , "%s: Post event 'EV_MASTER_ERROR_RECEIVE_DATA' failed!", __func__);
|
|
ESP_LOGD(MB_PORT_TAG,"%s:Callback receive data timeout failure.", __func__);
|
|
}
|
|
|
|
/**
|
|
* This is modbus master execute function error process callback function.
|
|
* @note There functions will block modbus master poll while execute OS waiting.
|
|
* So,for real-time of system.Do not execute too much waiting process.
|
|
*
|
|
* @param ucDestAddress destination salve address
|
|
* @param pucPDUData PDU buffer data
|
|
* @param ucPDULength PDU buffer length
|
|
*
|
|
*/
|
|
void vMBMasterErrorCBExecuteFunction(UCHAR ucDestAddress, const UCHAR* pucPDUData, USHORT ucPDULength)
|
|
{
|
|
BOOL ret = xMBMasterPortEventPost(EV_MASTER_ERROR_EXECUTE_FUNCTION);
|
|
MB_PORT_CHECK((ret == TRUE), ; , "%s: Post event 'EV_MASTER_ERROR_EXECUTE_FUNCTION' failed!", __func__);
|
|
ESP_LOGD(MB_PORT_TAG,"%s:Callback execute data timeout failure.", __func__);
|
|
}
|
|
|
|
/**
|
|
* This is modbus master request process success callback function.
|
|
* @note There functions will block modbus master poll while execute OS waiting.
|
|
* So,for real-time of system. Do not execute too much waiting process.
|
|
*/
|
|
void vMBMasterCBRequestSuccess( void ) {
|
|
/**
|
|
* @note This code is use OS's event mechanism for modbus master protocol stack.
|
|
* If you don't use OS, you can change it.
|
|
*/
|
|
BOOL ret = xMBMasterPortEventPost(EV_MASTER_PROCESS_SUCCESS);
|
|
MB_PORT_CHECK((ret == TRUE), ; , "%s: Post event 'EV_MASTER_PROCESS_SUCCESS' failed!", __func__);
|
|
ESP_LOGD(MB_PORT_TAG,"%s: Callback request success.", __func__);
|
|
}
|
|
|
|
/**
|
|
* This function is wait for modbus master request finish and return result.
|
|
* Waiting result include request process success, request respond timeout,
|
|
* receive data error and execute function error.You can use the above callback function.
|
|
* @note If you are use OS, you can use OS's event mechanism. Otherwise you have to run
|
|
* much user custom delay for waiting.
|
|
*
|
|
* @return request error code
|
|
*/
|
|
eMBMasterReqErrCode eMBMasterWaitRequestFinish( void ) {
|
|
eMBMasterReqErrCode eErrStatus = MB_MRE_NO_ERR;
|
|
eMBMasterEventType xRecvedEvent;
|
|
|
|
EventBits_t uxBits = xEventGroupWaitBits( xEventGroupMasterHdl, // The event group being tested.
|
|
MB_EVENT_REQ_MASK, // The bits within the event group to wait for.
|
|
pdTRUE, // Masked bits should be cleared before returning.
|
|
pdFALSE, // Don't wait for both bits, either bit will do.
|
|
portMAX_DELAY ); // Wait forever for either bit to be set.
|
|
xRecvedEvent = (eMBMasterEventType)(uxBits);
|
|
if (xRecvedEvent) {
|
|
ESP_LOGD(MB_PORT_TAG,"%s: returned event = 0x%x", __func__, xRecvedEvent);
|
|
if (!(xRecvedEvent & MB_EVENT_REQ_MASK)) {
|
|
// if we wait for certain event bits but get other then set in mask
|
|
ESP_LOGE(MB_PORT_TAG,"%s: incorrect event set = 0x%x", __func__, xRecvedEvent);
|
|
}
|
|
if MB_CHECK_EVENT(xRecvedEvent, EV_MASTER_PROCESS_SUCCESS) {
|
|
eErrStatus = MB_MRE_NO_ERR;
|
|
} else if MB_CHECK_EVENT(xRecvedEvent, EV_MASTER_ERROR_RESPOND_TIMEOUT){
|
|
eErrStatus = MB_MRE_TIMEDOUT;
|
|
} else if MB_CHECK_EVENT(xRecvedEvent, EV_MASTER_ERROR_RECEIVE_DATA){
|
|
eErrStatus = MB_MRE_REV_DATA;
|
|
} else if MB_CHECK_EVENT(xRecvedEvent, EV_MASTER_ERROR_EXECUTE_FUNCTION){
|
|
eErrStatus = MB_MRE_EXE_FUN;
|
|
}
|
|
} else {
|
|
ESP_LOGE(MB_PORT_TAG,"%s: Incorrect event or timeout xRecvedEvent = 0x%x", __func__, uxBits);
|
|
assert(0);
|
|
}
|
|
return eErrStatus;
|
|
}
|
|
|
|
void vMBMasterPortEventClose(void)
|
|
{
|
|
vEventGroupDelete(xEventGroupMasterHdl);
|
|
vSemaphoreDelete(xSemaphorMasterHdl);
|
|
}
|
|
|
|
#endif
|