Commit ecaf8721 authored by Dean Camera's avatar Dean Camera
Browse files

Corrected AudioInput and AudioOutput demos, to fix endpoint underflows due to...

Corrected AudioInput and AudioOutput demos, to fix endpoint underflows due to rounding in the sample reload timer.
parent 6a5a37d7
......@@ -95,7 +95,7 @@ EVENT_HANDLER(USB_Connect)
UpdateStatus(Status_USBEnumerating);
/* Sample reload timer initialization */
OCR0A = (F_CPU / AUDIO_SAMPLE_FREQUENCY) - ((F_CPU % AUDIO_SAMPLE_FREQUENCY) == 0 ? 1 : 0);
OCR0A = (F_CPU / AUDIO_SAMPLE_FREQUENCY) - 1;
TCCR0A = (1 << WGM01); // CTC mode
TCCR0B = (1 << CS00); // Fcpu speed
}
......
......@@ -90,7 +90,7 @@ EVENT_HANDLER(USB_Connect)
UpdateStatus(Status_USBEnumerating);
/* Sample reload timer initialization */
OCR0A = (F_CPU / AUDIO_SAMPLE_FREQUENCY) - ((F_CPU % AUDIO_SAMPLE_FREQUENCY) == 0 ? 1 : 0);
OCR0A = (F_CPU / AUDIO_SAMPLE_FREQUENCY) - 1;
TCCR0A = (1 << WGM01); // CTC mode
TCCR0B = (1 << CS00); // Fcpu speed
......
......@@ -29,8 +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)
* - Adjusted sample CTC timer calculations in the AudioOutput and AudioInput demos to match the CTC calculations in the AVR datasheet,
* and to fix instances where rounding caused the endpoint to underflow (thanks to Robin Theunis)
* - The USB_Host_SendControlRequest() function no longer automatically selects the Control pipe (pipe 0), so that other control type
* pipes can be used with the function
* - The USB Host management task now saves and restores the currently selected pipe before and after the task completes
......
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