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Corrected AudioInput and AudioOutput demos, to fix endpoint underflows due to rounding in the sample reload timer.

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This commit is contained in:
Dean Camera 2009-04-14 12:07:41 +00:00
parent 6a5a37d7d1
commit ecaf872177
3 changed files with 4 additions and 4 deletions
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2
Demos/Device/AudioInput/AudioInput.c
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@ -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
}

2
Demos/Device/AudioOutput/AudioOutput.c
View File

@ -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

4
LUFA/ChangeLog.txt
View File

@ -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