64 lines
1.5 KiB
C++
64 lines
1.5 KiB
C++
// (C) 2024 by Folkert van Heusden
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// Released under MIT license
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#pragma once
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#include <atomic>
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#include <condition_variable>
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#include <cstdint>
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#include <mutex>
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#include <thread>
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#include <vector>
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#if defined(ESP32)
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#include <lwip/sockets.h>
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#else
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#include <poll.h>
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#endif
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#include "gen.h"
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#include "bus.h"
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#include "log.h"
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#define DC11_RCSR 0174000 // receiver status register
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#define DC11_BASE DC11_RCSR
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#define DC11_END (DC11_BASE + (4 * 4 + 1) * 2) // 4 interfaces, + 2 to point after it
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class bus;
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// 4 interfaces
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constexpr const int dc11_n_lines = 4;
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class dc11
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{
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private:
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int base_port { 1100 };
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bus *const b { nullptr };
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uint16_t registers[4 * dc11_n_lines] { };
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std::atomic_bool stop_flag { false };
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std::thread *th { nullptr };
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pollfd pfds[dc11_n_lines * 2] { };
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std::vector<char> recv_buffers[dc11_n_lines];
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std::condition_variable have_data[dc11_n_lines];
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std::mutex input_lock[dc11_n_lines];
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void trigger_interrupt(const int line_nr);
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public:
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dc11(const int base_port, bus *const b);
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virtual ~dc11();
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#if IS_POSIX
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// json_t *serialize();
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// static tty *deserialize(const json_t *const j, bus *const b, console *const cnsl);
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#endif
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void reset();
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uint8_t read_byte(const uint16_t addr);
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uint16_t read_word(const uint16_t addr);
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void write_byte(const uint16_t addr, const uint8_t v);
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void write_word(const uint16_t addr, uint16_t v);
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void operator()();
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};
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