mirror of
https://github.com/espressif/ESP8266_RTOS_SDK.git
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121 lines
4.2 KiB
C
121 lines
4.2 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) 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: $Id: porttimer_m.c,v 1.60 2013/08/13 15:07:05 Armink add Master Functions$
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*/
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/* ----------------------- Platform includes --------------------------------*/
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#include "port.h"
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/* ----------------------- Modbus includes ----------------------------------*/
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#include "mb_m.h"
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#include "mbport.h"
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#include "sdkconfig.h"
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#include "esp_timer.h"
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/* ----------------------- Variables ----------------------------------------*/
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static USHORT msT35TimeOut;
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static esp_timer_handle_t xTimerIntHandle;
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/* ----------------------- static functions ---------------------------------*/
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static void IRAM_ATTR vTimerGroupIsr(void *param)
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{
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(void)pxMBMasterPortCBTimerExpired(); // Timer expired callback function
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}
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/* ----------------------- Start implementation -----------------------------*/
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BOOL xMBMasterPortTimersInit(USHORT msTimeOut)
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{
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MB_PORT_CHECK((msTimeOut > 0), FALSE,
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"Modbus timeout discreet is incorrect.");
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// Save timer reload value for Modbus T35 period
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msT35TimeOut = msTimeOut;
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esp_timer_create_args_t timer_conf = {
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.callback = vTimerGroupIsr,
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.arg = NULL,
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.dispatch_method = ESP_TIMER_TASK,
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.name = "PORT_TIMER_M"
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};
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ESP_ERROR_CHECK(esp_timer_create(&timer_conf, &xTimerIntHandle));
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return TRUE;
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}
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// Set alarm value for usTimerTimeOut50us * 50uS
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static BOOL xMBMasterPortTimersEnable(USHORT msTimeOut)
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{
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MB_PORT_CHECK((msTimeOut > 0), FALSE,
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"incorrect tick value for timer = (0x%x).",
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(uint32_t)msTimeOut);
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ESP_ERROR_CHECK(esp_timer_stop(xTimerIntHandle));
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ESP_ERROR_CHECK(esp_timer_start_once(xTimerIntHandle, msTimeOut * 1000));
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return TRUE;
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}
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void vMBMasterPortTimersT35Enable(void)
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{
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USHORT msTimeOut = msT35TimeOut;
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// Set current timer mode, don't change it.
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vMBMasterSetCurTimerMode(MB_TMODE_T35);
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// Set timer period
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(void)xMBMasterPortTimersEnable(msTimeOut);
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}
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void vMBMasterPortTimersConvertDelayEnable(void)
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{
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// Covert time in milliseconds into ticks
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USHORT msTimeOut = MB_MASTER_DELAY_MS_CONVERT;
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// Set current timer mode
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vMBMasterSetCurTimerMode(MB_TMODE_CONVERT_DELAY);
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ESP_LOGD(MB_PORT_TAG,"%s Convert delay enable.", __func__);
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(void)xMBMasterPortTimersEnable(msTimeOut);
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}
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void vMBMasterPortTimersRespondTimeoutEnable(void)
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{
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USHORT msTimeOut = MB_MASTER_TIMEOUT_MS_RESPOND;
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vMBMasterSetCurTimerMode(MB_TMODE_RESPOND_TIMEOUT);
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ESP_LOGD(MB_PORT_TAG,"%s Respond enable timeout.", __func__);
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(void)xMBMasterPortTimersEnable(msTimeOut);
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}
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void MB_PORT_ISR_ATTR
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vMBMasterPortTimersDisable()
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{
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ESP_ERROR_CHECK(esp_timer_stop(xTimerIntHandle));
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}
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void vMBMasterPortTimerClose(void)
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{
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ESP_ERROR_CHECK(esp_timer_delete(xTimerIntHandle));
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}
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