void UartDevice::OnTxEmpty(Uart *uart)
{
TxBuffer::Block *block = m_tx_buf->GetActiveBlock();
while (block && block->it == block->size)
{
block = m_tx_buf->NextBlock();
}
if (!block)
{
DisableTx();
return;
}
const size_t size = block->size - block->it;
switch (block->type)
{
case TxBuffer::Block::kByteAry:
block->it += uart->PutBytes(block->data.byte_ + block->it, size);
break;
case TxBuffer::Block::kString:
block->it += uart->PutBytes((const Byte*)block->data.string_->data()
+ block->it, size);
break;
case TxBuffer::Block::kVector:
block->it += uart->PutBytes(block->data.vector_->data() + block->it,
size);
break;
}
}
/**
* @brief This routine will transmit the element from Tx Buffer.
* @param None.
* @retval uint8_t Status.
*/
uint8_t TxBuffer_SendElement(void)
{
if(ITERATOR < INDEX_Tx)
{
return TransmitBuffer[ITERATOR++];
}
else
{
DisableTx();
}
return 0x00;
}
void UartDevice::NextTxDma()
{
TxBuffer::Block *block = m_tx_buf->GetActiveBlock();
while (block && block->it == block->size)
{
block = m_tx_buf->NextBlock();
}
if (!block)
{
DisableTx();
return;
}
switch (block->type)
{
case TxBuffer::Block::kByteAry:
m_dma_config->src.addr = block->data.byte_;
break;
case TxBuffer::Block::kString:
m_dma_config->src.addr = (void*)block->data.string_->data();
break;
case TxBuffer::Block::kVector:
m_dma_config->src.addr = block->data.vector_->data();
break;
}
m_dma_config->major_count = block->size;
if (m_dma)
{
DmaManager::Delete(m_dma);
}
m_dma = DmaManager::New(*m_dma_config, m_tx_dma_channel);
m_dma->Start();
}