250 lines
6.9 KiB
C++
250 lines
6.9 KiB
C++
/*
|
|
* ll_hsusart_impl.h
|
|
*
|
|
* Created on: Oct 29, 2019
|
|
* Author: abody
|
|
*/
|
|
#include <string.h>
|
|
#include "ll_hsusart.h"
|
|
|
|
namespace f4ll {
|
|
|
|
template<typename T> static inline T RoundUpTo4(T input)
|
|
{
|
|
return (input + 3) & (((T)-1) - 3);
|
|
}
|
|
|
|
LL_HsUsart::LL_HsUsart(USART_TypeDef *usart, DMA_TypeDef *dma, uint32_t streamRx, uint32_t streamTx)
|
|
: m_usart(usart)
|
|
, m_rxDma(dma, streamRx)
|
|
, m_txDma(dma, streamTx)
|
|
{
|
|
LL_CrcHandler::Instance().AttachSlot(m_crcSlot);
|
|
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);
|
|
|
|
memset(&m_stats, 0, sizeof(m_stats));
|
|
}
|
|
|
|
|
|
uint8_t *LL_HsUsart::GetTxPacketBuffer(void)
|
|
{
|
|
return m_txBuffer.packet.payload;
|
|
}
|
|
|
|
|
|
USART_TypeDef* LL_HsUsart::GetUsart(void)
|
|
{
|
|
return m_usart;
|
|
}
|
|
|
|
|
|
LL_HsUsart::Stats const & LL_HsUsart::GetStats(void)
|
|
{
|
|
return m_stats;
|
|
}
|
|
|
|
|
|
bool LL_HsUsart::IsTxBusy()
|
|
{
|
|
return m_txBuffer.busy;
|
|
}
|
|
|
|
|
|
bool LL_HsUsart::IsTxFailed()
|
|
{
|
|
return m_txBuffer.error;
|
|
}
|
|
|
|
|
|
bool LL_HsUsart::IsRxBusy(bool second)
|
|
{
|
|
return m_rxBuffers[second].busy;
|
|
}
|
|
|
|
|
|
bool LL_HsUsart::IsRxFailed(bool second)
|
|
{
|
|
return m_rxBuffers[second].error;
|
|
|
|
}
|
|
|
|
void LL_HsUsart::RxProcessed(bool second)
|
|
{
|
|
m_rxBuffers[second].busy = false;
|
|
m_rxBuffers[second].error = false;
|
|
}
|
|
|
|
void LL_HsUsart::SetCallback(IHsUsartCallback *callback, uintptr_t callbackParam)
|
|
{
|
|
m_userCallback = callback;
|
|
m_userCallbackParam = callbackParam;
|
|
}
|
|
|
|
void LL_HsUsart::BuildHeader(Packet &packet, uint8_t serialNo, uint8_t length)
|
|
{
|
|
uint8_t hash = STARTMARKER;
|
|
|
|
packet.header.startByte = STARTMARKER;
|
|
packet.header.serial = serialNo;
|
|
hash ^= serialNo;
|
|
packet.header.payloadLength = length;
|
|
hash ^= length;
|
|
packet.header.hash = hash;
|
|
}
|
|
|
|
|
|
bool LL_HsUsart::CheckHeader(PacketHeader &header)
|
|
{
|
|
return header.startByte == STARTMARKER && (header.startByte ^ header.serial ^ header.payloadLength) == header.hash;
|
|
}
|
|
|
|
|
|
void LL_HsUsart::PostPacket(uint8_t const *payload, uint8_t length, bool waitForCrcQueue)
|
|
{
|
|
uint16_t payloadLength = RoundUpTo4((uint16_t)length);
|
|
|
|
BuildHeader(m_txBuffer.packet, m_txSerialNo++, length);
|
|
if(payload)
|
|
memcpy(m_txBuffer.packet.payload, payload, length);
|
|
m_txBuffer.requestedLength = sizeof(m_txBuffer.packet.header) + payloadLength + sizeof(uint32_t);
|
|
m_txBuffer.busy = true;
|
|
m_txBuffer.error = false;
|
|
|
|
LL_CrcHandler::Instance().Enqueue(m_crcSlot, 0, &m_txBuffer.packet, sizeof(PacketHeader) + payloadLength,
|
|
nullptr, reinterpret_cast<uintptr_t>(m_txBuffer.packet.payload + payloadLength));
|
|
|
|
while(waitForCrcQueue && LL_CrcHandler::Instance().IsQueued(m_crcSlot, 0));
|
|
|
|
LL_DMA_ConfigAddresses(m_txDma.GetDma(), m_txDma.GetStream(), reinterpret_cast<uint32_t>(&m_txBuffer.packet),
|
|
LL_USART_DMA_GetRegAddr(m_usart), LL_DMA_DIRECTION_MEMORY_TO_PERIPH);
|
|
LL_DMA_SetDataLength(m_txDma.GetDma(), m_txDma.GetStream(), m_txBuffer.requestedLength);
|
|
LL_USART_EnableDMAReq_TX(m_usart);
|
|
LL_DMA_EnableStream(m_txDma.GetDma(), m_txDma.GetStream());
|
|
|
|
++m_stats.sent;
|
|
}
|
|
|
|
|
|
void LL_HsUsart::SetupReceive()
|
|
{
|
|
int packetIndex = m_rxBufferSelector;
|
|
|
|
LL_DMA_ConfigAddresses(m_rxDma.GetDma(), m_rxDma.GetStream(), LL_USART_DMA_GetRegAddr(m_usart),
|
|
reinterpret_cast<uint32_t>(&m_rxBuffers[packetIndex]), LL_DMA_DIRECTION_PERIPH_TO_MEMORY);
|
|
m_rxBuffers[packetIndex].requestedLength = sizeof(m_rxBuffers[packetIndex].packet);
|
|
LL_DMA_SetDataLength(m_rxDma.GetDma(), m_rxDma.GetStream(), m_rxBuffers[packetIndex].requestedLength); // payload already have extra room for hash
|
|
LL_USART_EnableDMAReq_RX(m_usart);
|
|
LL_USART_ClearFlag_ORE(m_usart);
|
|
LL_DMA_EnableStream(m_rxDma.GetDma(), m_rxDma.GetStream());
|
|
}
|
|
|
|
|
|
void LL_HsUsart::UsartIrq(void)
|
|
{
|
|
if(LL_USART_IsActiveFlag_IDLE(m_usart) && LL_USART_IsEnabledIT_IDLE(m_usart)) { // receiver idle
|
|
LL_USART_ClearFlag_IDLE(m_usart);
|
|
uint16_t rcvdLen = m_rxBuffers[m_rxBufferSelector].requestedLength - LL_DMA_GetDataLength(m_rxDma.GetDma(), m_rxDma.GetStream());
|
|
if(rcvdLen >= sizeof(PacketHeader)) {
|
|
if(CheckHeader(m_rxBuffers[m_rxBufferSelector].packet.header)) {
|
|
if(rcvdLen >= sizeof(PacketHeader) +
|
|
RoundUpTo4((uint16_t)m_rxBuffers[m_rxBufferSelector].packet.header.payloadLength)
|
|
+ sizeof(uint32_t))
|
|
LL_DMA_DisableStream(m_rxDma.GetDma(), m_rxDma.GetStream());
|
|
else
|
|
++m_stats.premature_payload;
|
|
} else {
|
|
m_rxBuffers[m_rxBufferSelector].error = 1;
|
|
LL_DMA_DisableStream(m_rxDma.GetDma(), m_rxDma.GetStream());
|
|
}
|
|
} else
|
|
++m_stats.premature_hdr;
|
|
}
|
|
else if(LL_USART_IsActiveFlag_TC(m_usart) && LL_USART_IsEnabledIT_TC(m_usart)) { // transmission complete
|
|
LL_USART_DisableIT_TC(m_usart);
|
|
LL_USART_DisableDirectionTx(m_usart); // enforcing an idle frame
|
|
LL_USART_EnableDirectionTx(m_usart);
|
|
m_txBuffer.busy = 0;
|
|
}
|
|
}
|
|
|
|
|
|
void LL_HsUsart::RxDmaIrq()
|
|
{
|
|
++m_stats.rcvd;
|
|
if(*m_rxDma.GetIsReg() & m_rxDma.GetTcMask()) {
|
|
*m_rxDma.GetIfcReg() = m_rxDma.GetTcMask();
|
|
if(CheckHeader(m_rxBuffers[m_rxBufferSelector].packet.header))
|
|
LL_CrcHandler::Instance().Enqueue(m_crcSlot, 1,
|
|
&m_rxBuffers[m_rxBufferSelector].packet,
|
|
sizeof(PacketHeader) + RoundUpTo4((uint16_t)m_rxBuffers[m_rxBufferSelector].packet.header.payloadLength),
|
|
this, m_rxBufferSelector);
|
|
else {
|
|
++m_stats.hdrError;
|
|
m_rxBuffers[m_rxBufferSelector].error = true;
|
|
}
|
|
} else if(*m_rxDma.GetIsReg() & m_rxDma.GetTeMask()) {
|
|
*m_rxDma.GetIfcReg() = m_rxDma.GetTeMask();
|
|
m_rxBuffers[m_rxBufferSelector].error = 1;
|
|
++m_stats.dmaError;
|
|
}
|
|
|
|
m_rxBufferSelector = !m_rxBufferSelector;
|
|
|
|
if(m_rxBuffers[m_rxBufferSelector].busy)
|
|
++m_stats.overrun;
|
|
SetupReceive();
|
|
}
|
|
|
|
|
|
void LL_HsUsart::CrcSucceeded(uintptr_t callbackParam, uint32_t crc, int prio)
|
|
{
|
|
Buffer &buf(m_rxBuffers[static_cast<int>(callbackParam)]);
|
|
|
|
buf.busy = 1;
|
|
if(*(uint32_t*) (buf.packet.payload + RoundUpTo4((uint16_t)buf.packet.header.payloadLength)) != crc) {
|
|
buf.error = 1;
|
|
buf.errorInfo = crc;
|
|
++m_stats.payloadErrror;
|
|
}
|
|
if(m_userCallback)
|
|
buf.busy = !m_userCallback->PacketReceived(this, m_userCallbackParam, buf.packet);
|
|
}
|
|
|
|
|
|
void LL_HsUsart::CrcFailed(uintptr_t callbackParam, uint32_t crc, int prio)
|
|
{
|
|
Buffer &buf(m_rxBuffers[static_cast<int>(callbackParam)]);
|
|
buf.busy = buf.error = true;
|
|
buf.errorInfo = 0;
|
|
++m_stats.payloadErrror;
|
|
if(m_userCallback)
|
|
buf.busy = !m_userCallback->PacketReceived(this, m_userCallbackParam, buf.packet);
|
|
}
|
|
|
|
|
|
void LL_HsUsart::TxDmaIrq()
|
|
{
|
|
if(*m_txDma.GetIsReg() & m_txDma.GetTcMask()) { // DMA transfer complete
|
|
*m_txDma.GetIfcReg() = m_txDma.GetTcMask();
|
|
LL_USART_EnableIT_TC(m_usart);
|
|
LL_DMA_DisableStream(m_txDma.GetDma(), m_txDma.GetStream());
|
|
}
|
|
else if(*m_txDma.GetIsReg() & m_txDma.GetTeMask()) {
|
|
*m_txDma.GetIfcReg() = m_txDma.GetTeMask();
|
|
m_txBuffer.error = 1;
|
|
++m_stats.dmaError;
|
|
}
|
|
if(*m_txDma.GetIsReg() & m_txDma.GetFeMask())
|
|
*m_txDma.GetIfcReg() = m_txDma.GetFeMask();
|
|
if(*m_txDma.GetIsReg() & m_txDma.GetHtMask())
|
|
*m_txDma.GetIfcReg() = m_txDma.GetHtMask();
|
|
if(*m_txDma.GetIsReg() & m_txDma.GetDmeMask())
|
|
*m_txDma.GetIfcReg() = m_txDma.GetDmeMask();
|
|
}
|
|
|
|
|
|
} // namespace f4ll
|