UartDevice::UartDevice(const Initializer &initializer)
: m_rx_buf{new RxBuffer},
m_rx_isr(initializer.config.rx_isr),
m_tx_buf(new TxBuffer(initializer.config.tx_buf_size)),
m_is_tx_idle(true),
//m_tx_dma_channel(initializer.config.tx_dma_channel),
m_dma(nullptr),
m_uart(nullptr)
{
Uart::Config &&uart_config = initializer.GetUartConfig();
uart_config.rx_isr = std::bind(&UartDevice::OnRxFull, this, placeholders::_1);
if (!IsUseDma())
{
uart_config.tx_isr = std::bind(&UartDevice::OnTxEmpty, this,
placeholders::_1);
}
m_uart = Uart(uart_config);
if (IsUseDma())
{
m_dma_config.reset(new Dma::Config);
m_dma_config->src.addr = nullptr; // temp
m_dma_config->src.offset = 1;
m_dma_config->src.size = Dma::Config::TransferSize::k1Byte;
m_dma_config->src.major_offset = 0;
m_dma_config->major_count = 0;
m_uart.ConfigTxAsDmaDst(m_dma_config.get());
m_dma_config->complete_isr = std::bind(&UartDevice::OnTxDmaComplete,
this, placeholders::_1);
}
m_uart.SetEnableRxIrq(true);
}
Uart Gpio::allocateUart() {
std::lock_guard<std::mutex> lock(mutex_);
if (::demo::isVerbose) {
std::cout << "Allocating UART pins" << std::endl;
}
// The pin number is reduced by 2 as the GPIO pins range from 2 to 27, but the array's indices range from 0 to 25.
if (ownedPins_.at(12) || ownedPins_.at(13)) {
throw std::runtime_error("The UART pins must not already be allocated");
}
// The pin number is reduced by 2 as the GPIO pins range from 2 to 27, but the array's indices range from 0 to 25.
ownedPins_.at(12) = true;
ownedPins_.at(13) = true;
return Uart();
}
int main() {
char buf[5] = {'h', 'e', 'l', 'l', 'o'};
Uart test = Uart(1);
test.transmit(buf, 5);
}