Implement I2C generic device and STM32 specific; Not yet tested, will be with ADC

include/sta/i2c.hpp

@@ -0,0 +1,26 @@
+#ifndef STA_I2C_HPP
+#define STA_I2C_HPP
+
+#include <cstdint>
+#include <sta/mutex.hpp>
+
+namespace sta {
+    class I2cDevice {
+    protected:
+        uint16_t address;
+        Mutex* mutex;
+        bool master;
+    public:
+        I2cDevice(uint16_t address_10bit, Mutex* mutex=nullptr, bool master=false);
+
+        virtual bool transmit(uint8_t* data, uint16_t size, bool blocking=true) = 0;
+
+        virtual bool receive(uint8_t* data, uint16_t size, bool blocking=true) = 0;
+
+        virtual void acquire();
+
+        virtual void release();
+    };
+}
+
+#endif // #ifdef STA_I2C_HPP

include/sta/stm32/i2c.hpp

@@ -0,0 +1,39 @@
+#ifndef STA_STM32_I2C_HPP
+#define STA_STM32_I2C_HPP
+
+#include <sta/config.hpp>
+#ifdef STA_PLATFORM_STM32
+#  include <sta/stm32/hal.hpp>
+#  ifdef HAL_I2C_MODULE_ENABLED
+#    define STA_STM32_I2C_ENABLED
+#  endif // HAL_SPI_MODULE_ENABLED
+#endif // STA_PLATFORM_STM32
+
+#ifdef STA_STM32_I2C_ENABLED
+
+#include <sta/i2c.hpp>
+
+namespace sta {
+    class STM32I2cDevice : public I2cDevice {
+    private:
+        I2C_HandleTypeDef* i2cHandle;
+        const uint32_t timeout = HAL_MAX_DELAY;
+
+    public:
+        STM32I2cDevice(
+        		I2C_HandleTypeDef* i2cHandle,
+				uint16_t address,
+				Mutex* mutex=nullptr,
+				bool master=false,
+				bool blocking=true
+		);
+
+        bool transmit(uint8_t* data, uint16_t size) override;
+        bool receive(uint8_t* data, uint16_t size) override;
+
+        bool deviceReady();
+    };
+}
+
+#endif // STA_STM32_I2C_ENABLED
+#endif // STA_STM32_I2C_HPP