Fixed issue with low PWM frequencies causing excessive CPU utilisation

Duet3D · Apr 21, 2021 · bc6dd38 · bc6dd38
1 parent d58d49d
commit bc6dd38
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/SAME5x_C21/AnalogOut.cpp b/src/SAME5x_C21/AnalogOut.cpp
@@ -129,8 +129,9 @@ namespace AnalogOut
 			else
 			{
 				// Just update the compare register
+				// Don't call hri_tccount16_write_CCBUF_CCBUF_bf here! It loops for up to one TC period waiting for sync.
 				const uint16_t cc = ConvertRange(val, tcTop[device]);
-				hri_tccount16_write_CCBUF_CCBUF_bf(tcdev, output, cc);
+				tcdev->COUNT16.CCBUF[output].bit.CCBUF = cc;
 			}
 
 			SetPinFunction(pin, peri);