sta-core/include/sta/devices/arduino/bus/spi.hpp

#ifndef STA_CORE_ARDUINO_SPI_HPP
#define STA_CORE_ARDUINO_SPI_HPP

#include <sta/config.hpp>
#ifdef STA_PLATFORM_ARDUINO

#include <sta/bus/spi/device.hpp>
#include <sta/bus/spi/spi.hpp>

#include <sta/devices/arduino/gpio_pin.hpp>
#include <sta/devices/arduino/hal.hpp>

namespace sta
{
#ifdef STA_PLATFORM_ARDUINO_DEVICE_ESP32 
    enum SPIBus
    {
        BUS_HSPI = HSPI,
        BUS_FSPI = FSPI
#   ifndef STA_MCU_ESP32_S3
        , BUS_VSPI = VSPI
#   endif // !STA_MCU_ESP32_S3
    };
#endif // STA_PLATFORM_ARDUINO_DEVICE_ESP32

    class ArduinoSPI : public SPI 
    {
    public:
#ifndef STA_PLATFORM_ARDUINO_DEVICE_ESP32
        /**
         * @brief Construct an SPI bus interface using the Arduino framework.
         * 
         * @param settings The settings for the spi bus.
         * @param mutex A mutex for managing bus access in multithreaded applications. Default is a dummy mutex that is always free.
         */
        ArduinoSPI(const SPISettings & settings, Mutex * mutex = sta::Mutex::ALWAYS_FREE);
#else
        /**
         * @brief Construct an SPI bus interface using the Arduino framework.
         * 
         * @param bus The bus to use. 
         * @param settings The settings for the spi bus.
         * @param mutex A mutex for managing bus access in multithreaded applications. Default is a dummy mutex that is always free.
         */
        ArduinoSPI(SPIBus bus, const SPISettings & settings, Mutex * mutex = sta::Mutex::ALWAYS_FREE);
#endif // !STA_PLATFORM_ARDUINO_DEVICE_ESP32
        void transfer(uint8_t value) override;
        void transfer16(uint16_t value) override;
        void transfer(const uint8_t * buffer, size_t size) override;
        void transfer(const uint8_t * txBuffer, uint8_t * rxBuffer, size_t size) override;
        void receive(uint8_t * buffer, size_t size) override;

        void fill(uint8_t value, size_t count) override;

        void acquire() override;
        void release() override;
    private:
        SPIClass spi_;
    };

    class ArduinoSPIDevice : public SPIDevice 
    {
    public:
        ArduinoSPIDevice(ArduinoSPI * intf, ArduinoGpioPin * csPin);
    };
} // namespace sta

#endif // STA_PLATFORM_ARDUINO

#endif // STA_CORE_ARDUINO_SPI_HPP