HiFi module looping sound

Cal

Using the HiFiSound2AFC.m example, how can I loop a sound?

Say I add the 'PunishSound' to the initial 'Waitforpoke' state:

sma = AddState(sma, 'Name', 'WaitForCenterPoke', ...
        'Timer', 0,...
        'StateChangeConditions', {'Port2In', 'Delay'},...
        'OutputActions', {'HiFi1','*', 'HiFi1', ['P' 2]});

The sound only plays briefly and I can't seem to find the syntax to implement:

'[b]O' (ASCII 79): [b]Set loop mode for a waveform

Thanks.

Josh

Hello Cal,

Loop mode is a property of each sound, and it is set when loading the sound to the device. By default it is off. Please note the 'optional args' section of the 'load' function here.

You can use:

H.load(1, MyAudioWaveform, 'LoopMode', 1);

The reference to 'O' is in the serial interface documentation, which is wrapped by the BpodHiFi class. You'd work at this level if you were creating your own interface to the device in a new language (e.g. Labview, Julia, C#).

I hope this helps!

-Josh

Cal

Hi Josh,
Perfect, Thanks!
Just in case someone else has the same problem, "[i]H.load(1, MyAudioWaveform, [i]'LoopMode', 1);" it seems like using push ('HiFi', *') in the same OutputActions causes some problems & the loop doesn't work - plays some smooth jazz (really cool error message!)

sma = AddState(sma, 'Name', 'WaitForCenterPoke', ...
'Timer', 0,...
'StateChangeConditions', {'Port2In', 'Delay'},...
'OutputActions', {[s]'HiFi1', '*', 'HiFi', ['P' 0], 'PWM2', 255});

Thanks again,
Cal

Josh

Hello Cal,

Looks like you found some of our test data on the SD card!

In output actions of a single state, you can only address each module once. The current software does not throw an error if you do - it just ignores the first command to the module. This will be fixed soon!

You may be able to use {'HiFi1', ['*P' 2]} to do it from a single state. Otherwise you'll need two states.

-Josh