Added elapsed time support for seconds, minutes, hours and days.

// elapsed time support
uint8_t getNumberOfSeconds(uint32_t time);
uint8_t getNumberOfMinutes(uint32_t time);
uint8_t getNumberOfHours(uint32_t time);
uint8_t getNumberOfDays(uint32_t time);
uint32_t uClockClass::getNowTimer();

src/uClock.cpp

@@ -87,6 +87,8 @@ static uint32_t phase_mult(uint32_t val)
 
 void uClockClass::start() 
 {
+	start_timer = millis();
+	
 	if (mode == INTERNAL_CLOCK) {
 		state = STARTED;
 		mod6_counter = 0;
@@ -287,17 +289,47 @@ void uClockClass::handleTimerInt()
 
 }
 
+// elapsed time support
+uint8_t uClockClass::getNumberOfSeconds(uint32_t time)
+{
+	return ((millis() - time) / 1000) % SECS_PER_MIN;
+}
+
+uint8_t uClockClass::getNumberOfMinutes(uint32_t time)
+{
+	return (((millis() - time) / 1000) / SECS_PER_MIN) % SECS_PER_MIN;
+}
+
+uint8_t uClockClass::getNumberOfHours(uint32_t time)
+{
+	return (((millis() - time) / 1000) % SECS_PER_DAY) / SECS_PER_HOUR;
+}
+
+uint8_t uClockClass::getNumberOfDays(uint32_t time)
+{
+	return ((millis() - time) / 1000) / SECS_PER_DAY;
+}
+
+uint32_t uClockClass::getNowTimer()
+{
+	return _timer;
+}
+	
 } } // end namespace umodular::clock
 
 umodular::clock::uClockClass uClock;
 
 volatile uint16_t _clock = 0;
+volatile uint32_t _timer = 0;
 
 //
 // TIMER1 HANDLER INTERRUPT
 //
 ISR(TIMER1_OVF_vect) 
 {
+	// global timer counter
+	_timer = millis();
+	
 	if (uClock.state == uClock.STARTED) {
 		_clock++;
 		uClock.handleTimerInt();

src/uClock.h

@@ -33,6 +33,10 @@
 #include <Arduino.h>
 #include <inttypes.h>
 
+#define SECS_PER_MIN  (60UL)
+#define SECS_PER_HOUR (3600UL)
+#define SECS_PER_DAY  (SECS_PER_HOUR * 24L)
+
 namespace umodular { namespace clock {
 
 class uClockClass {
@@ -57,6 +61,7 @@ class uClockClass {
 		uint32_t indiv96th_counter;
 		uint16_t pll_x;
 		uint16_t tempo;
+		uint32_t start_timer;
 
 		enum {
 			PAUSED = 0,
@@ -108,6 +113,14 @@ class uClockClass {
 		
 		void shuffle();
 		void tap();
+		
+		// elapsed time support
+		uint8_t getNumberOfSeconds(uint32_t time);
+		uint8_t getNumberOfMinutes(uint32_t time);
+		uint8_t getNumberOfHours(uint32_t time);
+		uint8_t getNumberOfDays(uint32_t time);
+		uint32_t uClockClass::getNowTimer();
+
 };
 
 } } // end namespace umodular::clock
@@ -116,6 +129,7 @@ extern umodular::clock::uClockClass uClock;
 
 extern "C" {
 extern volatile uint16_t _clock;
+extern volatile uint32_t _timer;
 }
 
 #endif /* __U_CLOCK_H__ */