Analog output play multiple streams simultaneously

Noa

Hi Josh and Bpod users!
I want to play different waveforms on different set of channels using Bpod's analog output, I do that with TriggerProfiles mode and it works fine.
Now I want to trigger one profile, and then trigger another profile (on a different set of channels) without stopping the previous one. Is that possible? If not is there any other syntax that allows for simultaneous play of different waveforms on different channels?

Thanks!
Noa

Josh

Hi Noa,

Triggering a new profile shouldn't interfere with one that is already playing.

Try the following (viewing the output of ch1 and 2 on separate channels of an oscilloscope):

SF = 10000;
W.SamplingRate = SF;
Wave1 = ones(1,SF*4); % 4 seconds of 1V
Wave2 = ones(1,SF*4)*2; % 4 seconds of 2V
W.loadWaveform(1, Wave1);
W.loadWaveform(2, Wave2);
W.TriggerProfiles(1,:) = [1 0 0 0]; % Trigger profile 1 plays waveform 1 on ch1
W.TriggerProfiles(2,:) = [0 2 0 0]; % Trigger profile 2 plays waveform 2 on ch2
W.TriggerProfileEnable = 'On';

W.play(1); % Start waves + channels in trigger profile 1
pause(2);
W.play(2); % Start waves + channels in trigger profile 2

Please let me know if this is what you had in mind.

Thanks,

-Josh