f407ve_hs_uart/lib/ll_usartcore.cpp

116 lines
3.5 KiB
C++

/*
* ll_dmadrivenusartcore.cpp
*
* Created on: Nov 4, 2019
* Author: abody
*/
#include <ll_usartcore.h>
namespace f4ll {
LL_UsartCore::LL_UsartCore(USART_TypeDef *usart, DMA_TypeDef *dma, uint32_t streamRx, uint32_t streamTx)
: m_usart(usart)
, m_rxDma(dma, streamRx)
, m_txDma(dma, streamTx)
{
LL_DMA_EnableIT_TC(dma, streamRx);
LL_DMA_EnableIT_TE(dma, streamRx);
LL_DMA_EnableIT_TC(dma, streamTx);
LL_DMA_EnableIT_TE(dma, streamTx);
LL_USART_EnableIT_IDLE(usart);
}
void LL_UsartCore::UsartIsr()
{
if(LL_USART_IsActiveFlag_IDLE(m_usart) && LL_USART_IsEnabledIT_IDLE(m_usart)) { // receiver idle
LL_USART_ClearFlag_IDLE(m_usart);
ReceiverIdle();
} else if(LL_USART_IsActiveFlag_TC(m_usart) && LL_USART_IsEnabledIT_TC(m_usart)) { // transmission complete
LL_USART_DisableIT_TC(m_usart);
TransmissionComplete();
}
}
void LL_UsartCore::RxDmaIsr()
{
if(*m_rxDma.GetIsReg() & m_rxDma.GetTcMask()) {
*m_rxDma.GetIfcReg() = m_rxDma.GetTcMask();
if(m_rxDma.IsEnabledIt_TC())
RxDmaTransferComplete();
}
if(*m_rxDma.GetIsReg() & m_rxDma.GetHtMask()) {
*m_rxDma.GetIfcReg() = m_rxDma.GetHtMask();
if(m_rxDma.IsEnabledIt_HT())
RxDmaHalfTransfer();
}
if(*m_rxDma.GetIsReg() & m_rxDma.GetTeMask()) {
*m_rxDma.GetIfcReg() = m_rxDma.GetTeMask();
if(m_rxDma.IsEnabledIt_TE())
RxDmaError(LL_DmaHelper::DmaErrorType::Transfer);
}
if(*m_rxDma.GetIsReg() & m_rxDma.GetFeMask()) {
*m_rxDma.GetIfcReg() = m_rxDma.GetFeMask();
if(m_rxDma.IsEnabledIt_FE())
RxDmaError(LL_DmaHelper::DmaErrorType::Fifo);
}
if(*m_rxDma.GetIsReg() & m_rxDma.GetDmeMask()) {
*m_rxDma.GetIfcReg() = m_rxDma.GetDmeMask();
if(m_rxDma.IsEnabledIt_DME())
RxDmaError(LL_DmaHelper::DmaErrorType::DirectMode);
}
}
void LL_UsartCore::TxDmaIsr()
{
if(*m_txDma.GetIsReg() & m_txDma.GetTcMask()) { // DMA transfer complete
*m_txDma.GetIfcReg() = m_txDma.GetTcMask();
if(m_txDma.IsEnabledIt_TC())
TxDmaTransferComplete();
}
if(*m_txDma.GetIsReg() & m_txDma.GetHtMask()) {
*m_txDma.GetIfcReg() = m_txDma.GetHtMask();
if(m_txDma.IsEnabledIt_HT())
TxDmaHalfTransfer();
}
if(*m_txDma.GetIsReg() & m_txDma.GetTeMask()) {
*m_txDma.GetIfcReg() = m_txDma.GetTeMask();
if(m_txDma.IsEnabledIt_TE())
TxDmaError(LL_DmaHelper::DmaErrorType::Transfer);
}
if(*m_txDma.GetIsReg() & m_txDma.GetFeMask()) {
*m_txDma.GetIfcReg() = m_txDma.GetFeMask();
if(m_txDma.IsEnabledIt_FE())
TxDmaError(LL_DmaHelper::DmaErrorType::Fifo);
}
if(*m_txDma.GetIsReg() & m_txDma.GetDmeMask()) {
*m_txDma.GetIfcReg() = m_txDma.GetDmeMask();
if(m_txDma.IsEnabledIt_DME())
TxDmaError(LL_DmaHelper::DmaErrorType::DirectMode);
}
}
void LL_UsartCore::SetupTransmit(void const *buffer, uint16_t length)
{
LL_DMA_ConfigAddresses(m_txDma.GetDma(), m_txDma.GetStream(), reinterpret_cast<uint32_t>(buffer),
LL_USART_DMA_GetRegAddr(m_usart), LL_DMA_DIRECTION_MEMORY_TO_PERIPH);
LL_DMA_SetDataLength(m_txDma.GetDma(), m_txDma.GetStream(), length);
LL_USART_EnableDMAReq_TX(m_usart);
LL_DMA_EnableStream(m_txDma.GetDma(), m_txDma.GetStream());
}
void LL_UsartCore::SetupReceive(void *buffer, uint16_t length)
{
LL_DMA_ConfigAddresses(m_rxDma.GetDma(), m_rxDma.GetStream(), LL_USART_DMA_GetRegAddr(m_usart),
reinterpret_cast<uint32_t>(buffer), LL_DMA_DIRECTION_PERIPH_TO_MEMORY);
LL_DMA_SetDataLength(m_rxDma.GetDma(), m_rxDma.GetStream(), length);
LL_USART_EnableDMAReq_RX(m_usart);
LL_USART_ClearFlag_ORE(m_usart);
LL_DMA_EnableStream(m_rxDma.GetDma(), m_rxDma.GetStream());
}
} /* namespace f4ll */