ESP32 support and changes to SPI to support ESP32

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

@@ -8,14 +8,42 @@
 #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:
-        ArduinoSPI(const SPISettings & settings, Mutex * mutex = nullptr);
-
+#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;
@@ -27,7 +55,7 @@ namespace sta
         void acquire() override;
         void release() override;
     private:
-
+        SPIClass spi_;
     };
 
     class ArduinoSPIDevice : public SPIDevice