more i2c flesh

Desktop_Interface/i2cdecoder.cpp

@@ -1,5 +1,7 @@
 #include "i2cdecoder.h"
 
+using namespace i2c;
+
 i2cDecoder::i2cDecoder(isoBuffer* sda_in, isoBuffer* scl_in, uint32_t clockRate) : QObject(nullptr)
 {
 	sda = sda_in;
@@ -48,3 +50,15 @@ void i2cDecoder::runStateMachine()
 {
 
 }
+
+edge i2cDecoder::edgeDetection(uint8_t current, uint8_t prev)
+{
+	if (current && prev)
+		return edge::held_high;
+	if (!current && !prev)
+		return edge::held_low;
+	if (current && !prev)
+		return edge::rising;
+	if (!current &&!prev)
+		return edge::falling;
+}

Desktop_Interface/i2cdecoder.h

@@ -4,6 +4,24 @@
 #include <QObject>
 #include "isobuffer.h"
 
+namespace i2c
+{
+
+enum class transmissionState: uint8_t
+{
+	idle,
+	address,
+	data	
+};
+
+enum class edge: uint8_t
+{
+	rising,
+	falling,
+	held_high,
+	held_low
+};
+
 class i2cDecoder : public QObject
 {
     Q_OBJECT
@@ -13,7 +31,9 @@ private:
     isoBuffer* sda;
 	isoBuffer* scl;
 	uint8_t currentSdaValue;
+	uint8_t previousSdaValue;
 	uint8_t currentSclValue;
+	uint8_t previousSclValue;
     uint64_t serialPtr_bit = 0;
 	void updateBitValues();
 	uint32_t stepSize;
@@ -21,8 +41,12 @@ private:
 	void runStateMachine();
     void run(); 
     int serialDistance(isoBuffer* buffer);
+	edge edgeDetection(uint8_t current, uint8_t prev);
 signals:
 public slots:
+
 };
 
+} // Namespace i2c
+
 #endif // UARTSTYLEDECODER_H