2014-04-08 15:40:51 +04:00

98 lines
3.0 KiB
C++

/*
* Copyright (C) 2014 Pavel Kirienko <pavel.kirienko@gmail.com>
*/
#pragma once
#include <uavcan/protocol/param/GetSet.hpp>
#include <uavcan/protocol/param/SaveErase.hpp>
#include <uavcan/node/service_server.hpp>
#include <uavcan/util/method_binder.hpp>
namespace uavcan
{
class UAVCAN_EXPORT IParamManager
{
public:
typedef typename StorageType<typename protocol::param::GetSet::Response::FieldTypes::name>::Type ParamName;
typedef typename StorageType<typename protocol::param::GetSet::Request::FieldTypes::index>::Type ParamIndex;
typedef protocol::param::Value ParamValue;
virtual ~IParamManager() { }
/**
* Copy the parameter name to @ref out_name if it exists, otherwise do nothing.
*/
virtual void getParamNameByIndex(ParamIndex index, ParamName& out_name) const = 0;
/**
* Assign by name if exists.
*/
virtual void assignParamValue(const ParamName& name, const ParamValue& value) = 0;
/**
* Read by name if exists, otherwise do nothing.
*/
virtual void readParamValue(const ParamName& name, ParamValue& out_value) const = 0;
/**
* Read param's default/max/min if available.
* Implementation is optional.
*/
virtual void readParamDefaultMaxMin(const ParamName& name, ParamValue& out_default,
ParamValue& out_max, ParamValue& out_min) const
{
(void)name;
(void)out_default;
(void)out_max;
(void)out_min;
}
/**
* Save all params to non-volatile storage.
* @return Negative if failed.
*/
virtual int saveAllParams() = 0;
/**
* Clear the non-volatile storage.
* @return Negative if failed.
*/
virtual int eraseAllParams() = 0;
};
class UAVCAN_EXPORT ParamServer
{
typedef MethodBinder<ParamServer*, void (ParamServer::*)(const protocol::param::GetSet::Request&,
protocol::param::GetSet::Response&)> GetSetCallback;
typedef MethodBinder<ParamServer*, void (ParamServer::*)(const protocol::param::SaveErase::Request&,
protocol::param::SaveErase::Response&)> SaveEraseCallback;
ServiceServer<protocol::param::GetSet, GetSetCallback> get_set_srv_;
ServiceServer<protocol::param::SaveErase, SaveEraseCallback> save_erase_srv_;
IParamManager* manager_;
static bool isValueNonEmpty(const protocol::param::Value& value);
void handleGetSet(const protocol::param::GetSet::Request& request, protocol::param::GetSet::Response& response);
void handleSaveErase(const protocol::param::SaveErase::Request& request,
protocol::param::SaveErase::Response& response);
public:
explicit ParamServer(INode& node)
: get_set_srv_(node)
, save_erase_srv_(node)
, manager_(NULL)
{ }
int start(IParamManager* manager);
IParamManager* getParamManager() const { return manager_; }
};
}