Adjusted sample CTC timer calculations in the AudioOutput and AudioInput demos to account for situations where the division results in a value with no remainder, requiring one to be subtracted from the result (thanks to Robin Theunis).

Demos/Device/AudioInput/AudioInput.c

@@ -95,7 +95,7 @@ EVENT_HANDLER(USB_Connect)
 	UpdateStatus(Status_USBEnumerating);
 
 	/* Sample reload timer initialization */
-	OCR0A   = (F_CPU / AUDIO_SAMPLE_FREQUENCY);
+	OCR0A   = (F_CPU / AUDIO_SAMPLE_FREQUENCY) - ((F_CPU % AUDIO_SAMPLE_FREQUENCY) == 0 ? 1 : 0);
 	TCCR0A  = (1 << WGM01);  // CTC mode
 	TCCR0B  = (1 << CS00);   // Fcpu speed
 }

Demos/Device/AudioOutput/AudioOutput.c

@@ -90,7 +90,7 @@ EVENT_HANDLER(USB_Connect)
 	UpdateStatus(Status_USBEnumerating);
 	
 	/* Sample reload timer initialization */
-	OCR0A   = (F_CPU / AUDIO_SAMPLE_FREQUENCY);
+	OCR0A   = (F_CPU / AUDIO_SAMPLE_FREQUENCY) - ((F_CPU % AUDIO_SAMPLE_FREQUENCY) == 0 ? 1 : 0);
 	TCCR0A  = (1 << WGM01);  // CTC mode
 	TCCR0B  = (1 << CS00);   // Fcpu speed
 			

LUFA/ChangeLog.txt

@@ -29,6 +29,8 @@
   *  - Fixed GenericHID demo not starting USB and HID management tasks when not using interrupt driven modes (thanks to Carl Kjeldsen)
   *  - Fixed RNDISEthenet demo checking the incorrect message field for packet size constraints (thanks to Jonathan)
   *  - Fixed WriteNextReport code in the GenericHIDHost demo using incorrect parameter types and not selecting the correct endpoint
+  *  - Adjusted sample CTC timer calculations in the AudioOutput and AudioInput demos to account for situations where the division results
+  *    in a value with no remainder, requiring one to be subtracted from the result (thanks to Robin Theunis)
   *
   *  \section Sec_ChangeLog090401 Version 090401
   *