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Diffstat (limited to 'src/drivers/TwiMaster.h')
-rw-r--r-- | src/drivers/TwiMaster.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/drivers/TwiMaster.h b/src/drivers/TwiMaster.h new file mode 100644 index 00000000..3b7555f5 --- /dev/null +++ b/src/drivers/TwiMaster.h @@ -0,0 +1,38 @@ +#pragma once +#include <FreeRTOS.h> +#include <semphr.h> +#include <drivers/include/nrfx_twi.h> + + +namespace Pinetime { + namespace Drivers { + class TwiMaster { + public: + enum class Modules { TWIM1 }; + enum class Frequencies {Khz100, Khz250, Khz400}; + struct Parameters { + uint32_t frequency; + uint8_t pinSda; + uint8_t pinScl; + }; + + TwiMaster(const Modules module, const Parameters& params); + + void Init(); + void Read(uint8_t deviceAddress, uint8_t registerAddress, uint8_t* buffer, size_t size); + void Write(uint8_t deviceAddress, uint8_t registerAddress, const uint8_t* data, size_t size); + + private: + void Read(uint8_t deviceAddress, uint8_t* buffer, size_t size, bool stop); + void Write(uint8_t deviceAddress, const uint8_t* data, size_t size, bool stop); + NRF_TWIM_Type* twiBaseAddress; + SemaphoreHandle_t mutex; + const Modules module; + const Parameters params; + static constexpr uint8_t maxDataSize{8}; + static constexpr uint8_t registerSize{1}; + uint8_t internalBuffer[maxDataSize + registerSize]; + + }; + } +}
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