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// $Id$ |
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#include <foreach.hpp> |
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#include <scopes.hpp> |
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#include <timing.hpp> |
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#include <iomanip> |
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#include <iostream> |
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std::ostream &operator<<(std::ostream &output, const Display::Packet &packet) |
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{ |
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< |
return output << _B("0x") << std::hex << std::setw(2) << std::setfill('0') << unsigned(packet.command) << std::dec << std::setw(0) << std::setfill(' ') << _B(" [") << packet.GetData() << ']'; |
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return output << _B("0x") << std::hex << std::setw(2) << std::setfill('0') << unsigned(packet.command) << _B(" [") << packet.GetData() << ']'; |
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} |
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void operator<<(int fd, const Display::Packet &packet) |
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void Communicate(Display *display) |
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{ |
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display->Communicate_(); |
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} |
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< |
Display::Display(const std::string &device) : ucom(Posix::Open(device, O_RDWR | O_NOCTTY)), thread(reinterpret_cast<void *(*)(void *)>(::Communicate)) |
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> |
Display::Display(const std::string &device) : ucom(Posix::Open(device, O_RDWR | O_NOCTTY | O_NONBLOCK)), ucomCondition(ucomLock), running(true), responsesCondition(responsesLock), thread(reinterpret_cast<void *(*)(void *)>(::Communicate), this) |
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{ |
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::termios state; |
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state.c_lflag |= NOFLSH; |
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Posix::CheckError(::tcsetattr(ucom, TCSANOW, &state)); |
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|
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_synchronized (ucomLock) |
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ucomCondition.Signal(); |
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} |
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|
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Display::~Display() |
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{ |
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running = false; |
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|
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thread.Join(); |
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|
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Posix::Close(ucom); |
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} |
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|
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void Display::Communicate_() |
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{ |
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_synchronized (ucomLock) |
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ucomCondition.Wait(); |
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|
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while (running) |
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{ |
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Packet response; |
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|
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_synchronized (ucomLock) |
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try |
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{ |
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ucom >> response; |
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} |
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catch (const Posix::Error error) |
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{ |
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if (error.what() != _B("Resource temporarily unavailable")) |
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throw error; |
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|
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goto next; |
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} |
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|
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if ((response.command & Packet::Error) == Packet::Error); |
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else if ((response.command & Packet::Report) == Packet::Report) |
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switch (response.command) |
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{ |
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case Packet::KeyActivity: |
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_synchronized (keyActivityLock) |
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keyActivity.push(response); |
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|
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break; |
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case Packet::FanSpeedReport: |
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case Packet::TemperatureSensorReport: |
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break; |
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} |
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else if ((response.command & Packet::Response) == Packet::Response) |
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_synchronized (responsesLock) |
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{ |
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responses.push(response); |
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responsesCondition.Signal(); |
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} |
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|
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next: Timing::NanoSleep(Timing::Time(0, 10000000)); |
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} |
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} |
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|
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Display::Packet Display::Communicate_(Display::Packet::Command command, uint8_t length, const uint8_t *data) |
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{ |
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< |
Packet packet(command, length, data), response; |
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Packet packet(command, length, data); |
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|
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< |
ucom << packet; |
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retry: |
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_synchronized (ucomLock) |
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ucom << packet; |
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|
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< |
_forever |
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> |
_synchronized (responsesLock) |
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{ |
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< |
ucom >> response; |
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while (responses.empty()) |
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try |
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{ |
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responsesCondition.Wait(Timing::GetTimeOfDay() += 1); |
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} |
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catch (const Posix::Error &error) |
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{ |
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if (error.what() != _B("Operation timed out")) |
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throw error; |
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|
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goto retry; |
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} |
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|
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< |
if (packet.command | Packet::Response == response.command) |
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return response; |
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> |
Packet response(responses.front()); |
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< |
switch (response.command) |
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{ |
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case Packet::KeyActivity: |
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keyActivity.push(response); |
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> |
responses.pop(); |
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|
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< |
break; |
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< |
case Packet::FanSpeedReport: |
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< |
case Packet::TemperatureSensorReport: |
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< |
break; |
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< |
} |
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> |
assert ((packet.command | Packet::Response) == response.command); |
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> |
|
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> |
return response; |
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} |
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|
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throw; |
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} |
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|
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bool Display::Ping(const std::string &data) |
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{ |
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Communicate(Packet::SendDataToLCD, column, row, data); |
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} |
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|
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Display::KeyActivity Display::GetKeyActivity() |
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{ |
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_synchronized (keyActivityLock) |
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if (keyActivity.size()) |
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{ |
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KeyActivity activity(KeyActivity(*keyActivity.front().data)); |
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|
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keyActivity.pop(); |
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|
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return activity; |
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} |
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|
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return None; |
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} |
