112 lines
2.7 KiB
C++
112 lines
2.7 KiB
C++
/*
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* ll_HsUsart.h
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*
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* Created on: Oct 29, 2019
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* Author: abody
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*/
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#ifndef LL_HSUSART_H_
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#define LL_HSUSART_H_
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#include <platform/usart_ll.h>
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#include <ll_crchandler.h>
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namespace f4ll {
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struct DMAINFO;
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class LL_HsUsart : public LL_CrcHandler::ICallback
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{
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public:
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LL_HsUsart(USART_TypeDef *usart, DMA_TypeDef *dma, uint32_t stream_rx, uint32_t stream_tx);
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struct PacketHeader { // !!! size should be multiple of 4 !!!
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uint8_t startByte;
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uint8_t serial;
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uint8_t payloadLength;
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uint8_t hash;
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};
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struct Packet {
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PacketHeader header;
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uint8_t payload[256+sizeof(uint32_t)]; // extra room for crc32
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} __attribute__((aligned));
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struct Stats {
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uint32_t overrun;
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uint32_t hdrError;
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uint32_t payloadErrror;
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uint32_t pep1, pep2;
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uint32_t dmaError;
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uint32_t rcvd;
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uint32_t premature_hdr;
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uint32_t premature_payload;
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uint32_t sent;
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uint32_t skiped;
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};
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struct IHsUsartCallback {
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virtual bool PacketReceived(LL_HsUsart *caller, uintptr_t userParam, Packet const &packet) = 0;
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};
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//LL_CRCHandler::ICallback interface functions
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virtual void CrcSucceeded(uintptr_t callbackParam, uint32_t crc, int prio);
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virtual void CrcFailed(uintptr_t callbackParam, uint32_t crc, int prio);
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void PostPacket(uint8_t const *payload, uint8_t length, bool waitForCrcQueue = true);
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void SetupReceive(void);
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void RxProcessed(bool second);
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uint8_t* GetTxPacketBuffer(void);
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USART_TypeDef* GetUsart(void);
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Stats const & GetStats();
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bool IsTxBusy();
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bool IsTxFailed();
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bool IsRxBusy(bool second);
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bool IsRxFailed(bool second);
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void SetCallback(IHsUsartCallback* callback, uintptr_t callbackParam);
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static inline void HandleUsartIrq(LL_HsUsart *obj) {
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obj->UsartIrq();
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}
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static inline void HandleRxDmaIrq(LL_HsUsart *obj) {
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obj->RxDmaIrq();
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}
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static inline void HandleTxDmaIrq(LL_HsUsart *obj) {
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obj->TxDmaIrq();
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}
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private:
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void BuildHeader(Packet &packet, uint8_t serialNo, uint8_t length);
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bool CheckHeader(PacketHeader &header);
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void UsartIrq(void);
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void RxDmaIrq(void);
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void TxDmaIrq(void);
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struct Buffer {
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Packet packet;
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//transfer area ends here
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volatile bool busy = 0;
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volatile bool error = 0;
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uint16_t requestedLength = 0;
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uint32_t errorInfo = 0;
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};
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static const uint8_t STARTMARKER = 0x95;
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USART_TypeDef *m_usart;
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LL_DmaHelper m_rxDma;
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LL_DmaHelper m_txDma;
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uint8_t m_rxSerialNo = -1;
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uint8_t m_txSerialNo = -1;
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Stats m_stats;
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bool m_rxBufferSelector = false;
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LL_CrcHandler::TSlot<2> m_crcSlot;
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IHsUsartCallback *m_userCallback = nullptr;
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uintptr_t m_userCallbackParam = 0;
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Buffer m_txBuffer;
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Buffer m_rxBuffers[2];
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};
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}
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#endif /* LL_HSUSART_H_ */
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