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#pragma once
#include <FreeRTOS.h>
#include <semphr.h>
#include <drivers/include/nrfx_twi.h> // NRF_TWIM_Type
#include <cstdint>
namespace Pinetime {
namespace Drivers {
class TwiMaster {
public:
enum class Modules { TWIM1 };
enum class Frequencies { Khz100, Khz250, Khz400 };
enum class ErrorCodes { NoError, TransactionFailed };
struct Parameters {
uint32_t frequency;
uint8_t pinSda;
uint8_t pinScl;
};
TwiMaster(const Modules module, const Parameters& params);
void Init();
ErrorCodes Read(uint8_t deviceAddress, uint8_t registerAddress, uint8_t* buffer, size_t size);
ErrorCodes Write(uint8_t deviceAddress, uint8_t registerAddress, const uint8_t* data, size_t size);
void Sleep();
void Wakeup();
private:
ErrorCodes Read(uint8_t deviceAddress, uint8_t* buffer, size_t size, bool stop);
ErrorCodes Write(uint8_t deviceAddress, const uint8_t* data, size_t size, bool stop);
void FixHwFreezed();
NRF_TWIM_Type* twiBaseAddress;
SemaphoreHandle_t mutex;
const Modules module;
const Parameters params;
static constexpr uint8_t maxDataSize {16};
static constexpr uint8_t registerSize {1};
uint8_t internalBuffer[maxDataSize + registerSize];
uint32_t txStartedCycleCount = 0;
static constexpr uint32_t HwFreezedDelay {161000};
};
}
}
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