1 /* Copyright 2018 Espressif Systems (Shanghai) PTE LTD 2 * 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 // mbc_tcp_master.h Modbus controller TCP master implementation header file 17 18 #ifndef _MODBUS_TCP_CONTROLLER_MASTER 19 #define _MODBUS_TCP_CONTROLLER_MASTER 20 21 #include <stdint.h> // for standard int types definition 22 #include <stddef.h> // for NULL and std defines 23 #include "esp_modbus_common.h" // for common defines 24 25 /* ----------------------- Defines ------------------------------------------*/ 26 #define MB_INST_MIN_SIZE (2) // The minimal size of Modbus registers area in bytes 27 #define MB_INST_MAX_SIZE (CONFIG_MB_INST_MAX_SIZE) // The maximum size of Modbus area in bytes 28 29 #define MB_CONTROLLER_NOTIFY_QUEUE_SIZE (CONFIG_MB_CONTROLLER_NOTIFY_QUEUE_SIZE) // Number of messages in parameter notification queue 30 #define MB_CONTROLLER_NOTIFY_TIMEOUT (pdMS_TO_TICKS(CONFIG_MB_CONTROLLER_NOTIFY_TIMEOUT)) // notification timeout 31 32 /** 33 * @brief Create Modbus Master controller and stack for TCP port 34 * 35 * @param[out] handler handler(pointer) to master data structure 36 * @return 37 * - ESP_OK Success 38 * - ESP_ERR_NO_MEM Parameter error 39 */ 40 esp_err_t mbc_tcp_master_create(void** handler); 41 42 #endif // _MODBUS_TCP_CONTROLLER_SLAVE 43
