Added I2C support for raspi & first rework of debugging

src/bus/i2c/device.cpp

@@ -0,0 +1,23 @@
+#include <sta/bus/i2c/device.hpp>
+
+#include <sta/assert.hpp>
+
+
+namespace sta
+{
+    I2cDevice::I2cDevice(I2c * intf, int addr) 
+        : Device{intf}, addr_{addr}
+    {
+        STA_ASSERT(intf != nullptr);
+    }
+
+    void I2cDevice::select()
+    {
+        // TODO: Implement address selection here?
+    }
+
+    void I2cDevice::deselect()
+    {
+        // TODO: Implement address deselection here?
+    }
+} // namespace sta

src/bus/i2c/i2c.cpp

@@ -0,0 +1,11 @@
+#include <sta/bus/i2c/i2c.hpp>
+
+
+namespace sta 
+{
+    I2c::I2c(Mutex * mutex=nullptr) 
+        : Interface{mutex}
+    {
+
+    }
+} // namespace sta