Merge pull request #6798 from DavePutz/issue_6735

Fix handling of zero-length pulseout pulse

Author: dhalbert

ports/nrf/common-hal/pulseio/PulseOut.c

@@ -74,6 +74,11 @@ static void pulseout_event_handler(nrf_timer_event_t event_type, void *p_context
     nrfx_timer_pause(timer);
 
     pulse_array_index++;
+    // Ignore a zero-length pulse
+    while (pulse_array_index < pulse_array_length &&
+           pulse_array[pulse_array_index] == 0) {
+        pulse_array_index++;
+    }
 
     // No more pulses. Turn off output and don't restart.
     if (pulse_array_index >= pulse_array_length) {