Exemplos de api_unlock em C++ (Cpp)

Exemplo n.º 1

Arquivo: UARTSerial.cpp Projeto: NXPmicro/mbed

ssize_t UARTSerial::read(void* buffer, size_t length)
{
    size_t data_read = 0;

    char *ptr = static_cast<char *>(buffer);

    api_lock();

    while (_rxbuf.empty()) {
        if (!_blocking) {
            api_unlock();
            return -EAGAIN;
        }
        api_unlock();
        wait_ms(1);  // XXX todo - proper wait, WFE for non-rtos ?
        api_lock();
    }

    while (data_read < length && !_rxbuf.empty()) {
        _rxbuf.pop(*ptr++);
        data_read++;
    }

    api_unlock();

    return data_read;
}

Exemplo n.º 2

Arquivo: UARTSerial.cpp Projeto: helmut64/mbed-os

int UARTSerial::sync()
{
    api_lock();

    while (!_txbuf.empty()) {
        api_unlock();
        // Doing better than wait would require TxIRQ to also do wake() when becoming empty. Worth it?
        wait_ms(1);
        api_lock();
    }

    api_unlock();

    return 0;
}

Exemplo n.º 3

Arquivo: UARTSerial.cpp Projeto: helmut64/mbed-os

ssize_t UARTSerial::read(void* buffer, size_t length)
{
    size_t data_read = 0;

    char *ptr = static_cast<char *>(buffer);

    api_lock();

    while (_rxbuf.empty()) {
        if (!_blocking) {
            api_unlock();
            return -EAGAIN;
        }
        api_unlock();
        wait_ms(1);  // XXX todo - proper wait, WFE for non-rtos ?
        api_lock();
    }

    while (data_read < length && !_rxbuf.empty()) {
        _rxbuf.pop(*ptr++);
        data_read++;
    }

    core_util_critical_section_enter();
    if (!_rx_irq_enabled) {
        UARTSerial::rx_irq();               // only read from hardware in one place
        if (!_rxbuf.full()) {
            SerialBase::attach(callback(this, &UARTSerial::rx_irq), RxIrq);
            _rx_irq_enabled = true;
        }
    }
    core_util_critical_section_exit();

    api_unlock();

    return data_read;
}

Exemplo n.º 4

Arquivo: UARTSerial.cpp Projeto: helmut64/mbed-os

ssize_t UARTSerial::write(const void* buffer, size_t length)
{
    size_t data_written = 0;
    const char *buf_ptr = static_cast<const char *>(buffer);

    api_lock();

    while (_txbuf.full()) {
        if (!_blocking) {
            api_unlock();
            return -EAGAIN;
        }
        api_unlock();
        wait_ms(1); // XXX todo - proper wait, WFE for non-rtos ?
        api_lock();
    }

    while (data_written < length && !_txbuf.full()) {
        _txbuf.push(*buf_ptr++);
        data_written++;
    }

    core_util_critical_section_enter();
    if (!_tx_irq_enabled) {
        UARTSerial::tx_irq();                // only write to hardware in one place
        if (!_txbuf.empty()) {
            SerialBase::attach(callback(this, &UARTSerial::tx_irq), TxIrq);
            _tx_irq_enabled = true;
        }
    }
    core_util_critical_section_exit();

    api_unlock();

    return data_written;
}

Exemplo n.º 5

Arquivo: UARTSerial.cpp Projeto: helmut64/mbed-os

void UARTSerial::set_flow_control(Flow type, PinName flow1, PinName flow2)
{
    api_lock();
    SerialBase::set_flow_control(type, flow1, flow2);
    api_unlock();
}

Exemplo n.º 6

Arquivo: UARTSerial.cpp Projeto: helmut64/mbed-os

void UARTSerial::set_format(int bits, Parity parity, int stop_bits)
{
    api_lock();
    SerialBase::format(bits, parity, stop_bits);
    api_unlock();
}