89 lines
2.2 KiB
C++
89 lines
2.2 KiB
C++
/*
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* ll_crchandler.h
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*
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* Created on: Oct 26, 2019
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* Author: compi
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*/
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#ifndef LL_CRCHANDLER_H_
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#define LL_CRCHANDLER_H_
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#include <inttypes.h>
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#include <platform/dma_ll.h>
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#include "f4ll/ll_dmahelper.h"
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#include "singleton.h"
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extern "C" void _HandleCrcDmaIrq(void);
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namespace f4ll {
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class LL_CrcHandler : public Singleton<LL_CrcHandler>
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{
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friend class Singleton<LL_CrcHandler>;
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public:
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struct ICallback
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{
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virtual void CrcSucceeded(uintptr_t callbackParam, uint32_t crc, uint8_t task) = 0;
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virtual void CrcFailed(uintptr_t callbackParam, uint32_t crc, uint8_t task) = 0;
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};
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class SlotBase
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{
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friend class LL_CrcHandler;
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public:
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struct CrcTask {
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void const * volatile m_address; // changed to nullptr when execution starts
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uint16_t volatile m_wordCount;
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LL_CrcHandler::ICallback *m_callback;
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uintptr_t m_callbackParam;
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};
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private:
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SlotBase *m_next = nullptr;
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uint8_t m_taskCount;
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virtual CrcTask& operator[](int index) = 0;
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protected:
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SlotBase(unsigned int taskCount) : m_taskCount(taskCount) {}
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SlotBase() = delete;
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SlotBase(SlotBase const &other) = delete;
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};
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template <uint8_t n> class Slot : public SlotBase
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{
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public:
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Slot() : SlotBase(n) {}
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virtual CrcTask& operator[](int index) { return m_tasks[index]; }
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private:
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Slot::CrcTask m_tasks[n];
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};
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void AttachSlot(SlotBase &slot);
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bool Enqueue(SlotBase &slot, uint8_t task, void const *address, uint16_t len, ICallback *cb, uintptr_t cbParam);
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uint32_t Compute(SlotBase &slot, uint8_t task, void const *address, uint16_t len);
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bool IsActive(SlotBase &slot, uint8_t task) const;
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bool IsQueued(SlotBase &slot, uint8_t task) const;
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bool IsRunning(SlotBase &slot, uint8_t task) const;
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void DmaTransferCompleted(void);
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private:
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LL_CrcHandler(DMA_TypeDef *dma, uint32_t stream);
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friend void ::_HandleCrcDmaIrq(void);
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void StartNextTask(void);
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void WaitResults(SlotBase &slot, uint8_t task) const;
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LL_DmaHelper m_dma;
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SlotBase * volatile m_firstSlot = nullptr;
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SlotBase * volatile m_activeSlot = nullptr;
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int volatile m_activeTask;
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};
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} // namespace f4ll
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#endif /* LL_CRCHANDLER_H_ */
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