Add a target for I2C activity.

Components/I2C/I2C.cpp

@@ -0,0 +1,35 @@
+//
+//  I2C.cpp
+//  Clock Signal
+//
+//  Created by Thomas Harte on 16/03/2024.
+//  Copyright © 2024 Thomas Harte. All rights reserved.
+//
+
+#include "I2C.hpp"
+
+using namespace I2C;
+
+void Bus::set_data(bool pulled) {
+	set_clock_data(clock_, pulled);
+}
+bool Bus::data() {
+	return data_;
+}
+
+void Bus::set_clock(bool pulled) {
+	set_clock_data(pulled, data_);
+}
+bool Bus::clock() {
+	return clock_;
+}
+
+void Bus::set_clock_data(bool clock_pulled, bool data_pulled) {
+	// TODO: all intelligence.
+	clock_ = clock_pulled;
+	data_ = data_pulled;
+}
+
+void Bus::add_peripheral(Peripheral *peripheral, int address) {
+	peripherals_[address] = peripheral;
+}

Components/I2C/I2C.hpp

@@ -0,0 +1,39 @@
+//
+//  I2C.hpp
+//  Clock Signal
+//
+//  Created by Thomas Harte on 16/03/2024.
+//  Copyright © 2024 Thomas Harte. All rights reserved.
+//
+
+#pragma once
+
+#include <unordered_map>
+
+namespace I2C {
+
+/// Provides the virtual interface for an I2C peripheral; attaching this to a bus
+/// provides automatic protocol handling.
+class Peripheral {
+
+};
+
+class Bus {
+public:
+	void set_data(bool pulled);
+	bool data();
+
+	void set_clock(bool pulled);
+	bool clock();
+
+	void set_clock_data(bool clock_pulled, bool data_pulled);
+
+	void add_peripheral(Peripheral *, int address);
+
+private:
+	bool data_ = false;
+	bool clock_ = false;
+	std::unordered_map<int, Peripheral *> peripherals_;
+};
+
+}