54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
//
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// Created by titov on 03.11.2021.
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//
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#include "MemoryAccessPublisher.hh"
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#include <algorithm>
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driver::MemoryAccessPublisher::MemoryAccessPublisher(peripheral::IMemoryAccess & memory_access,
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std::pmr::memory_resource * memory_resource) :
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memory(memory_access), subscribers(memory_resource),
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begin(-1), size(0), data_frame(memory_resource) {}
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void driver::MemoryAccessPublisher::addSubscriber(std::size_t bit_address, std::size_t bit_len,
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communication::IBinaryDataSubscriber * subscriber) {
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phase = mute;
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subscribers.addSubscriber(bit_address, bit_len, subscriber);
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begin = std::min( begin, bit_address / CHAR_BIT );
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std::size_t end = subscribers.getBitSize() / CHAR_BIT + 1; //todo: check it!
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size = end - begin;
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data_frame.resize( size );
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phase = request;
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}
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void driver::MemoryAccessPublisher::process() {
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//Ìåòîä ìîæåò ïðåðûâàòü âñå ìåòîäû êëàññà, íî íå íàîáîðîò.
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switch(phase) {
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case request:
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if( memory.read( &data_frame.front(), begin, size ) ) {
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phase = response;
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} else break;
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case response:
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if( memory.isReadComplete() ) {
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subscribers.read(&data_frame.front(), data_frame.size());
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phase = request;
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} break;
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case mute: break;
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}
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}
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bool driver::MemoryAccessPublisher::probe() const {
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return false;
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}
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