64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
#pragma once
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#include <cstddef>
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#include <cstdint>
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#include <FreeRTOS.h>
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#include <semphr.h>
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#include <task.h>
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namespace Pinetime {
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namespace Drivers {
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class SpiMaster {
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public:
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enum class SpiModule : uint8_t { SPI0, SPI1 };
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enum class BitOrder : uint8_t { Msb_Lsb, Lsb_Msb };
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enum class Modes : uint8_t { Mode0, Mode1, Mode2, Mode3 };
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enum class Frequencies : uint8_t { Freq8Mhz };
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struct Parameters {
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BitOrder bitOrder;
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Modes mode;
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Frequencies Frequency;
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uint8_t pinSCK;
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uint8_t pinMOSI;
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uint8_t pinMISO;
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};
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SpiMaster(const SpiModule spi, const Parameters& params);
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SpiMaster(const SpiMaster&) = delete;
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SpiMaster& operator=(const SpiMaster&) = delete;
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SpiMaster(SpiMaster&&) = delete;
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SpiMaster& operator=(SpiMaster&&) = delete;
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bool Init();
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bool Write(uint8_t pinCsn, const uint8_t* data, size_t size);
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bool Read(uint8_t pinCsn, uint8_t* cmd, size_t cmdSize, uint8_t* data, size_t dataSize);
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bool WriteCmdAndBuffer(uint8_t pinCsn, const uint8_t* cmd, size_t cmdSize, const uint8_t* data, size_t dataSize);
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void OnStartedEvent();
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void OnEndEvent();
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void Sleep();
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void Wakeup();
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private:
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void SetupWorkaroundForFtpan58(NRF_SPIM_Type* spim, uint32_t ppi_channel, uint32_t gpiote_channel);
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void DisableWorkaroundForFtpan58(NRF_SPIM_Type* spim, uint32_t ppi_channel, uint32_t gpiote_channel);
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void PrepareTx(const volatile uint32_t bufferAddress, const volatile size_t size);
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void PrepareRx(const volatile uint32_t bufferAddress, const volatile size_t size);
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NRF_SPIM_Type* spiBaseAddress;
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uint8_t pinCsn;
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SpiMaster::SpiModule spi;
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SpiMaster::Parameters params;
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volatile uint32_t currentBufferAddr = 0;
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volatile size_t currentBufferSize = 0;
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volatile TaskHandle_t taskToNotify;
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SemaphoreHandle_t mutex = nullptr;
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};
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}
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}
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