Adding DebounceThrottleDiv define to slow down the debounce rate.

By default:
DebounceThrottleDiv = 0;
This is the default infinity behaviour right now (may be changed in the future).

Increasing DebounceThrottleDiv will increase the scan rate divider.
DebounceThrottleDiv = 1; # Scans half as much
DebounceThrottleDiv = 2; # Scans a quarter as much
DebounceThrottleDiv = 3; # Scans an eigth as much
etc.

For ARM based uCs (like the Infinity) the maximum divider is 32.

Scan/MatrixARM/matrix_scan.c

@@ -26,6 +26,7 @@
 
 // Project Includes
 #include <cli.h>
+#include <kll.h>
 #include <led.h>
 #include <print.h>
 #include <macro.h>
@@ -38,6 +39,14 @@
 
 
 
+// ----- Defines -----
+
+#if ( DebounceThrottleDiv_define > 0 )
+nat_ptr_t Matrix_divCounter = 0;
+#endif
+
+
+
 // ----- Function Declarations -----
 
 // CLI Functions
@@ -232,6 +241,15 @@ void Matrix_keyPositionDebug( KeyPosition pos )
 // NOTE: scanNum should be reset to 0 after a USB send (to reset all the counters)
 void Matrix_scan( uint16_t scanNum )
 {
+#if ( DebounceThrottleDiv_define > 0 )
+	// Scan-rate throttling
+	// By scanning using a divider, the scan rate slowed down
+	// DebounceThrottleDiv_define == 1 means -> /2 or half scan rate
+	// This helps with bouncy switches on fast uCs
+	if ( !( Matrix_divCounter++ & (1 << ( DebounceThrottleDiv_define - 1 )) ) )
+		return;
+#endif
+
 	// Increment stats counters
 	if ( scanNum > matrixMaxScans ) matrixMaxScans = scanNum;
 	if ( scanNum == 0 )