38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
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#pragma once
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#include <FreeRTOS.h>
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#include <semphr.h>
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#include <drivers/include/nrfx_twi.h>
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namespace Pinetime {
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namespace Drivers {
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class TwiMaster {
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public:
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enum class Modules { TWIM1 };
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enum class Frequencies {Khz100, Khz250, Khz400};
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struct Parameters {
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uint32_t frequency;
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uint8_t pinSda;
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uint8_t pinScl;
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};
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TwiMaster(const Modules module, const Parameters& params);
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void Init();
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void Read(uint8_t deviceAddress, uint8_t registerAddress, uint8_t* buffer, size_t size);
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void Write(uint8_t deviceAddress, uint8_t registerAddress, const uint8_t* data, size_t size);
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private:
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void Read(uint8_t deviceAddress, uint8_t* buffer, size_t size, bool stop);
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void Write(uint8_t deviceAddress, const uint8_t* data, size_t size, bool stop);
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NRF_TWIM_Type* twiBaseAddress;
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SemaphoreHandle_t mutex;
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const Modules module;
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const Parameters params;
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static constexpr uint8_t maxDataSize{8};
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static constexpr uint8_t registerSize{1};
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uint8_t internalBuffer[maxDataSize + registerSize];
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};
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}
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}
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