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https://github.com/espressif/esp-idf.git
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44 lines
1.8 KiB
C
44 lines
1.8 KiB
C
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/* 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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// mbc_tcp_master.h Modbus controller TCP master implementation header file
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#ifndef _MODBUS_TCP_CONTROLLER_MASTER
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#define _MODBUS_TCP_CONTROLLER_MASTER
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#include <stdint.h> // for standard int types definition
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#include <stddef.h> // for NULL and std defines
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#include "esp_modbus_common.h" // for common defines
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/* ----------------------- Defines ------------------------------------------*/
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#define MB_INST_MIN_SIZE (2) // The minimal size of Modbus registers area in bytes
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#define MB_INST_MAX_SIZE (CONFIG_MB_INST_MAX_SIZE) // The maximum size of Modbus area in bytes
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#define MB_CONTROLLER_NOTIFY_QUEUE_SIZE (CONFIG_MB_CONTROLLER_NOTIFY_QUEUE_SIZE) // Number of messages in parameter notification queue
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#define MB_CONTROLLER_NOTIFY_TIMEOUT (pdMS_TO_TICKS(CONFIG_MB_CONTROLLER_NOTIFY_TIMEOUT)) // notification timeout
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/**
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* @brief Create Modbus Master controller and stack for TCP port
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*
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* @param[out] handler handler(pointer) to master data structure
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* @return
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* - ESP_OK Success
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* - ESP_ERR_NO_MEM Parameter error
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*/
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esp_err_t mbc_tcp_master_create(void** handler);
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#endif // _MODBUS_TCP_CONTROLLER_SLAVE
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