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https://github.com/holub/mame
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80 lines
1.5 KiB
C++
80 lines
1.5 KiB
C++
// license:BSD-3-Clause
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// copyright-holders:F.Ulivi
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/***************************************************************************
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dipty.cpp
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Device PTY interface
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***************************************************************************/
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#include "emu.h"
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#include "dipty.h"
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device_pty_interface::device_pty_interface(const machine_config &mconfig, device_t &device)
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: device_interface(device, "pty")
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, m_pty_master()
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, m_slave_name()
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, m_opened(false)
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{
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}
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device_pty_interface::~device_pty_interface()
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{
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}
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bool device_pty_interface::open()
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{
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if (!m_opened)
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{
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if (osd_file::openpty(m_pty_master, m_slave_name) == osd_file::error::NONE)
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{
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m_opened = true;
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}
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else
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{
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m_opened = false;
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m_pty_master.reset();
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}
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}
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return m_opened;
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}
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void device_pty_interface::close()
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{
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m_pty_master.reset();
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m_opened = false;
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}
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bool device_pty_interface::is_open() const
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{
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return m_opened;
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}
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ssize_t device_pty_interface::read(u8 *rx_chars , size_t count) const
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{
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u32 actual_bytes;
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if (m_opened && m_pty_master->read(rx_chars, 0, count, actual_bytes) == osd_file::error::NONE)
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return actual_bytes;
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else
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return -1;
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}
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void device_pty_interface::write(u8 tx_char) const
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{
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u32 actual_bytes;
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if (m_opened)
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m_pty_master->write(&tx_char, 0, 1, actual_bytes);
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}
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bool device_pty_interface::is_slave_connected() const
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{
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// TODO: really check for slave status
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return m_opened;
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}
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const char *device_pty_interface::slave_name() const
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{
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return m_slave_name.c_str();
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}
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