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esp-protocols/esp_modem/include/cxx_include/esp_modem_dce.hpp
2021-10-04 11:32:55 +02:00

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// Copyright 2021 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.
#ifndef _ESP_MODEM_DCE_HPP_
#define _ESP_MODEM_DCE_HPP_
#include <utility>
#include "cxx_include/esp_modem_netif.hpp"
#include "cxx_include/esp_modem_dce_module.hpp"
namespace esp_modem {
/**
* @defgroup ESP_MODEM_DCE
* @brief Definition of DCE abstraction
*/
/** @addtogroup ESP_MODEM_DCE
* @{
*/
/**
* @brief Helper class responsible for switching modes of the DCE's
*/
class DCE_Mode {
public:
DCE_Mode(): mode(modem_mode::COMMAND_MODE) {}
~DCE_Mode() = default;
bool set(DTE *dte, ModuleIf *module, Netif &netif, modem_mode m);
modem_mode get();
private:
modem_mode mode;
};
/**
* @brief General DCE class templated on a specific module. It is responsible for all the necessary transactions
* related to switching modes and consequent synergy with aggregated objects of DTE, Netif and a specific Module
*/
template<class SpecificModule>
class DCE_T {
static_assert(std::is_base_of<ModuleIf, SpecificModule>::value, "DCE must be instantiated with Module class only");
public:
explicit DCE_T(const std::shared_ptr<DTE>& dte, std::shared_ptr<SpecificModule> dev, esp_netif_t * netif):
dte(dte), device(std::move(dev)), netif(dte, netif)
{ }
~DCE_T() = default;
/**
* @brief Set data mode!
*/
void set_data() { set_mode(modem_mode::DATA_MODE); }
void exit_data() { set_mode(modem_mode::COMMAND_MODE); }
void set_cmux() { set_mode(modem_mode::CMUX_MODE); }
SpecificModule* get_module() { return device.get(); }
command_result command(const std::string& command, got_line_cb got_line, uint32_t time_ms)
{
return dte->command(command, std::move(got_line), time_ms);
}
bool set_mode(modem_mode m) { return mode.set(dte.get(), device.get(), netif, m); }
protected:
std::shared_ptr<DTE> dte;
std::shared_ptr<SpecificModule> device;
Netif netif;
DCE_Mode mode;
};
/**
* @brief Common abstraction of the modem DCE, specialized by the GenericModule which is a parent class for the supported
* defices and most common modems, as well.
*/
class DCE: public DCE_T<GenericModule> {
public:
using DCE_T<GenericModule>::DCE_T;
#define ESP_MODEM_DECLARE_DCE_COMMAND(name, return_type, num, ...) \
template <typename ...Agrs> \
return_type name(Agrs&&... args) \
{ \
return device->name(std::forward<Agrs>(args)...); \
}
DECLARE_ALL_COMMAND_APIS(forwards name(...) { device->name(...); } )
#undef ESP_MODEM_DECLARE_DCE_COMMAND
};
/**
* @}
*/
} // esp_modem
#endif // _ESP_MODEM_DCE_HPP_