67f62a79c1
add support of modbus master ascii rename base dir name of master and slave example to be mb_slave, mb_master to avoid conflict with sdio/slave example test add Kconfig option to enable ASCII and RTU mode separately update ASCII options + remove cast for errors added baudrate for examples into Kconfig updated magic numbers for timer timeout put ascii private definitions into one file
272 lines
11 KiB
C
272 lines
11 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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#include "esp_err.h" // for esp_err_t
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#include "mbc_master.h" // for master interface define
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#include "esp_modbus_master.h" // for public interface defines
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#include "mbc_serial_master.h" // for create function of the port
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#include "esp_modbus_callbacks.h" // for callback functions
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// This file implements public API for Modbus master controller.
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// These functions are wrappers for interface functions of the controller
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static mb_master_interface_t* master_interface_ptr = NULL;
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/**
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* Initialization of Modbus controller resources
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*/
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esp_err_t mbc_master_init(mb_port_type_t port_type, void** handler)
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{
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void* port_handler = NULL;
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esp_err_t error = ESP_ERR_NOT_SUPPORTED;
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switch(port_type)
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{
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case MB_PORT_SERIAL_MASTER:
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error = mbc_serial_master_create(port_type, &port_handler);
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break;
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case MB_PORT_TCP_MASTER:
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// TCP MAster is not yet supported
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//error = mbc_tcp_master_create(port_type, &port_handler);
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return ESP_ERR_NOT_SUPPORTED;
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default:
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return ESP_ERR_NOT_SUPPORTED;
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}
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MB_MASTER_CHECK((port_handler != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface initialization failure, error=(0x%x), port type=(0x%x).",
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error, (uint16_t)port_type);
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if ((port_handler != NULL) && (error == ESP_OK)) {
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master_interface_ptr = (mb_master_interface_t*) port_handler;
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*handler = port_handler;
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}
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return error;
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}
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/**
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* Modbus controller destroy function
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*/
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esp_err_t mbc_master_destroy(void)
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{
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esp_err_t error = ESP_OK;
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MB_MASTER_CHECK((master_interface_ptr != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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MB_MASTER_CHECK((master_interface_ptr->destroy != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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error = master_interface_ptr->destroy();
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MB_MASTER_CHECK((error == ESP_OK),
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error,
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"SERIAL master destroy failure error=(0x%x).",
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error);
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return error;
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}
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esp_err_t mbc_master_get_cid_info(uint16_t cid, const mb_parameter_descriptor_t** param_info)
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{
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esp_err_t error = ESP_OK;
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MB_MASTER_CHECK((master_interface_ptr != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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MB_MASTER_CHECK((master_interface_ptr->get_cid_info != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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error = master_interface_ptr->get_cid_info(cid, param_info);
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MB_MASTER_CHECK((error == ESP_OK),
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error,
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"SERIAL master get cid info failure error=(0x%x).",
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error);
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return error;
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}
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/**
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* Get parameter data for corresponding characteristic
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*/
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esp_err_t mbc_master_get_parameter(uint16_t cid, char* name, uint8_t* value, uint8_t* type)
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{
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esp_err_t error = ESP_OK;
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MB_MASTER_CHECK((master_interface_ptr != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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MB_MASTER_CHECK((master_interface_ptr->get_parameter != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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error = master_interface_ptr->get_parameter(cid, name, value, type);
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MB_MASTER_CHECK((error == ESP_OK),
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error,
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"SERIAL master get parameter failure error=(0x%x) (%s).",
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error, esp_err_to_name(error));
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return error;
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}
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/**
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* Send custom Modbus request defined as mb_param_request_t structure
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*/
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esp_err_t mbc_master_send_request(mb_param_request_t* request, void* data_ptr)
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{
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esp_err_t error = ESP_OK;
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MB_MASTER_CHECK((master_interface_ptr != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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MB_MASTER_CHECK((master_interface_ptr->send_request != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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error = master_interface_ptr->send_request(request, data_ptr);
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MB_MASTER_CHECK((error == ESP_OK),
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error,
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"SERIAL master send request failure error=(0x%x) (%s).",
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error, esp_err_to_name(error));
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return ESP_OK;
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}
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/**
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* Set Modbus parameter description table
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*/
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esp_err_t mbc_master_set_descriptor(const mb_parameter_descriptor_t* descriptor, const uint16_t num_elements)
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{
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esp_err_t error = ESP_OK;
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MB_MASTER_CHECK((master_interface_ptr != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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MB_MASTER_CHECK((master_interface_ptr->set_descriptor != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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error = master_interface_ptr->set_descriptor(descriptor, num_elements);
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MB_MASTER_CHECK((error == ESP_OK),
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error,
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"SERIAL master set descriptor failure error=(0x%x) (%s).",
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error, esp_err_to_name(error));
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return ESP_OK;
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}
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/**
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* Set parameter value for characteristic selected by name and cid
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*/
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esp_err_t mbc_master_set_parameter(uint16_t cid, char* name, uint8_t* value, uint8_t* type)
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{
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esp_err_t error = ESP_OK;
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MB_MASTER_CHECK((master_interface_ptr != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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MB_MASTER_CHECK((master_interface_ptr->set_parameter != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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error = master_interface_ptr->set_parameter(cid, name, value, type);
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MB_MASTER_CHECK((error == ESP_OK),
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error,
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"SERIAL master set parameter failure error=(0x%x) (%s).",
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error, esp_err_to_name(error));
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return ESP_OK;
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}
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/**
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* Setup Modbus controller parameters
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*/
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esp_err_t mbc_master_setup(void* comm_info)
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{
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esp_err_t error = ESP_OK;
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MB_MASTER_CHECK((master_interface_ptr != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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MB_MASTER_CHECK((master_interface_ptr->setup != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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error = master_interface_ptr->setup(comm_info);
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MB_MASTER_CHECK((error == ESP_OK),
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error,
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"SERIAL master setup failure error=(0x%x) (%s).",
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error, esp_err_to_name(error));
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return ESP_OK;
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}
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/**
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* Modbus controller stack start function
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*/
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esp_err_t mbc_master_start(void)
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{
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esp_err_t error = ESP_OK;
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MB_MASTER_CHECK((master_interface_ptr != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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MB_MASTER_CHECK((master_interface_ptr->start != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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error = master_interface_ptr->start();
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MB_MASTER_CHECK((error == ESP_OK),
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error,
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"SERIAL master start failure error=(0x%x) (%s).",
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error, esp_err_to_name(error));
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return ESP_OK;
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}
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eMBErrorCode eMBMasterRegDiscreteCB(UCHAR * pucRegBuffer, USHORT usAddress,
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USHORT usNDiscrete)
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{
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eMBErrorCode error = MB_ENOERR;
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MB_MASTER_CHECK((master_interface_ptr != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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MB_MASTER_CHECK((master_interface_ptr->master_reg_cb_discrete != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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error = master_interface_ptr->master_reg_cb_discrete(pucRegBuffer, usAddress, usNDiscrete);
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return error;
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}
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eMBErrorCode eMBMasterRegCoilsCB(UCHAR* pucRegBuffer, USHORT usAddress,
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USHORT usNCoils, eMBRegisterMode eMode)
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{
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eMBErrorCode error = MB_ENOERR;
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MB_MASTER_CHECK((master_interface_ptr != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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MB_MASTER_CHECK((master_interface_ptr->master_reg_cb_coils != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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error = master_interface_ptr->master_reg_cb_coils(pucRegBuffer, usAddress,
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usNCoils, eMode);
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return error;
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}
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eMBErrorCode eMBMasterRegHoldingCB(UCHAR * pucRegBuffer, USHORT usAddress,
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USHORT usNRegs, eMBRegisterMode eMode)
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{
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eMBErrorCode error = MB_ENOERR;
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MB_MASTER_CHECK((master_interface_ptr != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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MB_MASTER_CHECK((master_interface_ptr->master_reg_cb_holding != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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error = master_interface_ptr->master_reg_cb_holding(pucRegBuffer, usAddress,
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usNRegs, eMode);
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return error;
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}
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eMBErrorCode eMBMasterRegInputCB(UCHAR * pucRegBuffer, USHORT usAddress,
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USHORT usNRegs)
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{
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eMBErrorCode error = MB_ENOERR;
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MB_MASTER_CHECK((master_interface_ptr != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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MB_MASTER_CHECK((master_interface_ptr->master_reg_cb_input != NULL),
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ESP_ERR_INVALID_STATE,
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"Master interface is not correctly initialized.");
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error = master_interface_ptr->master_reg_cb_input(pucRegBuffer, usAddress, usNRegs);
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return error;
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}
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