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79 lines
2.6 KiB
79 lines
2.6 KiB
#ifndef T_KEYPAD_DRIVER_STUB_H_
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#define T_KEYPAD_DRIVER_STUB_H_
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#include <HAL/TDriverIsrCallback.h>
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#include <Simulators/IDriverStubCallback.h>
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#include <Simulators/SimulationClients/ComChannelSimulationClient.h>
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/**
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* Driver stub for a key pad. It works on a communication channel and invokes the callback
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* @ref Callback::CBK_ON_KEY_PRESSED when a byte is received.
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*
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* @tparam T_COM_CHANNEL_INDEX specifies the number of the communication channel, this driver
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* stub uses to exchange data with the simulator
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*/
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template<unsigned int T_COM_CHANNEL_INDEX>
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class TKeypadDriverStub: public redBlocks::Core::TGlobalPtrBase<TKeypadDriverStub<T_COM_CHANNEL_INDEX> >
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{
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public:
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enum Callback
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{
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CBK_ON_KEY_PRESSED
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};
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/**
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* This method initializes the driver stub (by adding the underlying logical communication channel).
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* @attention Use it only during the initialization phase, as it dynamically allocates memory.
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*/
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static void add()
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{
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TKeypadDriverStub* self = new TKeypadDriverStub();
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redBlocks::Simulators::ComChannelSimulationClient::add( T_COM_CHANNEL_INDEX, 20, 20, &self->mInternal );
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redBlocks::Simulators::ComChannelSimulationClient::enableRecvDataCallback( T_COM_CHANNEL_INDEX );
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}
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/**
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* Should be called from the interrupt callback in order to retrieve the key that was pressed.
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*/
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static u8 getKey()
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{
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return TKeypadDriverStub<T_COM_CHANNEL_INDEX>::getInstanceRef().mInternal.mKey;
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}
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private:
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/**
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* Internal class that implements the interface ComChannelSimulationClient::IRecvCallback
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* in order to get notified, when a message is received via the communication channel.
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*/
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class Internal: public redBlocks::Simulators::IDriverStubCallback
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{
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public:
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virtual void onDriverStubCallback()
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{
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redBlocks::Simulators::ComChannelSimulationClient::RecvMsg* msg = redBlocks::Simulators::ComChannelSimulationClient::getNextMessage( T_COM_CHANNEL_INDEX );
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if( NULL != msg )
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{
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// only use the first byte of the message, the rest is ignored
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msg->read( &mKey, sizeof( mKey ) );
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// invoke the callback
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RB_INVOKE_ISR_CBK( CBK_ON_KEY_PRESSED );
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}
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}
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/** the key tha was pressed */
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u8 mKey;
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};
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/** private single instance of class Internal */
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Internal mInternal;
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/**
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* Hide the constructor, as this class is meant to be instantiated only via the public method add
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*/
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TKeypadDriverStub() {}
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};
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#endif // T_KEYPAD_DRIVER_STUB_H_
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