1 files changed, 59 insertions, 0 deletions
diff --git a/src/Hardware/IoPorts.h b/src/Hardware/IoPorts.h
new file mode 100644
index 00000000..9570e72c
--- /dev/null
+++ b/src/Hardware/IoPorts.h
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+/*
+ * IoPort.h
+ *
+ *  Created on: 30 Sep 2017
+ *      Author: David
+ */
+
+#ifndef SRC_IOPORTS_H_
+#define SRC_IOPORTS_H_
+
+#include "RepRapFirmware.h"
+
+// Enumeration to describe what we want to do with a logical pin
+enum class PinAccess : int
+{
+	read,
+	write,
+	pwm,
+	servo
+};
+
+// Class to represent a port
+class IoPort
+{
+public:
+	IoPort();
+	void Clear();
+	bool Set(LogicalPin lp, PinAccess access, bool pInvert);
+
+	LogicalPin GetLogicalPin() const { return logicalPort; }
+	LogicalPin GetLogicalPin(bool& pInvert) const { pInvert = invert; return logicalPort; }
+	void WriteDigital(bool high) const { if (pin != NoPin) { WriteDigital(pin, (invert) ? !high : high); } }
+
+	// Low level port access
+	static void SetPinMode(Pin p, PinMode mode);
+	static bool ReadPin(Pin p);
+	static void WriteDigital(Pin p, bool high);
+	static void WriteAnalog(Pin p, float pwm, uint16_t frequency);
+
+protected:
+	LogicalPin logicalPort;
+	Pin pin;
+	bool invert;
+};
+
+// Class to represent a PWM output port
+class PwmPort : public IoPort
+{
+public:
+	PwmPort();
+	void SetFrequency(float freq);
+	float GetFrequency() const { return (float)frequency; }
+	void WriteAnalog(float pwm) const;
+
+private:
+	uint16_t frequency;
+};
+
+#endif /* SRC_PORT_H_ */