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Código Matlab para funcionamiento de streaming activado por trigger con detección de flancos del Picoscope 4226.

iTorreG8

iTorreG8

Hola muy buenas a todos, escribo ya que estoy intentando modificar el código de ejemplo de obtención de datos en streaming del picoscope 4226 en matlab, y tengo el siguiente código:
Código: 
%% PicoScope 4000 Series Instrument Driver Oscilloscope Streaming Data Capture Example

% This is an example of an instrument control session using a device

% object. The instrument control session comprises all the steps you are

% likely to take when communicating with your instrument.

%     

% These steps are:

%   

% # Create a device object 

% # Connect to the instrument

% # Configure properties

% # Invoke functions

% # Disconnect from the instrument

%

% To run the instrument control session, type the name of the file,

% PS4000_ID_Streaming_Example, at the MATLAB command prompt.

%

% The file, PS4000_ID_STREAMING_EXAMPLE.M must be on your MATLAB PATH. For

% additional information on setting your MATLAB PATH, type 'help addpath'

% at the MATLAB command prompt.

%

% Example:

%     PS4000_ID_Streaming_Example;

%

% Description:

%     Demonstrates how to set properties and call functions in order

%     to capture data in streaming mode from a PicoScope 4000 Series

%     Oscilloscope.

%

% Note: Not all device and group object functions used in this example

% are compatible with the Test and Measurement Tool.

%

% See also: <matlab:doc('icdevice') |icdevice|> | <matlab:doc('instrument/invoke') |invoke|>

%

% Copyright: © 2015-2017 Pico Technology Ltd. See LICENSE file for terms.


%% Suggested Input Test Signals

% This example was published using the following test signals:

%

% * Channel A: 3 Vpp, 1 Hz sine wave

% * Channel B: 2 Vpp, 4 Hz square wave


%% Clear Command Window and Close any Figures


clc;

close all;


%% Load Configuration Information


PS4000Config;


%% Parameter Definitions

% Define any parameters that might be required throughout the script.


channelA = ps4000Enuminfo.enPS4000Channel.PS4000_CHANNEL_A;

channelB = ps4000Enuminfo.enPS4000Channel.PS4000_CHANNEL_B;


%% Device Connection


% Check if an Instrument session using the device object |ps4000DeviceObj|

% is still open, and if so, disconnect if the User chooses 'Yes' when prompted.

if (exist('ps4000DeviceObj', 'var') && ps4000DeviceObj.isvalid && strcmp(ps4000DeviceObj.status, 'open'))

  

    openDevice = questionDialog(['Device object ps4000DeviceObj has an open connection. ' ...

        'Do you wish to close the connection and continue?'], ...

        'Device Object Connection Open');

  

    if (openDevice == PicoConstants.TRUE)

      

        % Close connection to device

        disconnect(ps4000DeviceObj);

        delete(ps4000DeviceObj);

      

    else


        % Exit script if User selects 'No'

        return;

      

    end

  

end


% Create device -  specify serial number if required

% Specify serial number as 2nd argument if required.

ps4000DeviceObj = icdevice('picotech_ps4000_generic', '');


% Connect device

connect(ps4000DeviceObj);


%% Display Unit Information From Shared Library


[infoStatus, unitInfo] = invoke(ps4000DeviceObj, 'getUnitInfo');


disp(unitInfo);


%% Channel Setup

% All channels are enabled by default - switch off all except Channels A and B.


numChannels = get(ps4000DeviceObj, 'channelCount');


% Channel A

channelSettings(1).enabled = PicoConstants.TRUE;

channelSettings(1).coupling = 1;

channelSettings(1).range = ps4000Enuminfo.enPS4000Range.PS4000_20V; %limite de voltaje del canal


channelARangeMv = PicoConstants.SCOPE_INPUT_RANGES(channelSettings(1).range + 1);


% Channel B

channelSettings(2).enabled = PicoConstants.TRUE;

channelSettings(2).coupling = 1;

channelSettings(2).range = ps4000Enuminfo.enPS4000Range.PS4000_2V;


channelBRangeMv = PicoConstants.SCOPE_INPUT_RANGES(channelSettings(2).range + 1);


if (numChannels == PicoConstants.QUAD_SCOPE)


    % Channel C

    channelSettings(3).enabled = PicoConstants.FALSE;

    channelSettings(3).coupling = 1;

    channelSettings(3).range = ps4000Enuminfo.enPS4000Range.PS4000_2V;



    % Channel D

    channelSettings(4).enabled = PicoConstants.FALSE;

    channelSettings(4).coupling = 1;

    channelSettings(4).range = ps4000Enuminfo.enPS4000Range.PS4000_2V;


end


% Keep the status values returned from the driver.

for ch = 1:numChannels

 

    status.setChannelStatus(ch) = invoke(ps4000DeviceObj, 'ps4000SetChannel', ...

        (ch - 1), channelSettings(ch).enabled, ...

        channelSettings(ch).coupling, channelSettings(ch).range);

  

end


% Obtain the maximum ADC Count from the driver

maxADCCount = double(get(ps4000DeviceObj, 'maxADCValue'));


%% Trigger Setup

% Turn off trigger

% If a trigger is set and the |autoStop| property of the Instrument

% Driver's Streaming group object is set to '1', the device will stop

% collecting data once the number of post trigger samples have been

% collected.


% Trigger properties and functions are located in the Instrument

% Driver's Trigger group.


triggerGroupObj = get(ps4000DeviceObj, 'Trigger');

triggerGroupObj = triggerGroupObj(1);


[status.setTriggerOff] = invoke(triggerGroupObj, 'setTriggerOff');


%% Set Data Buffers

% Data buffers for channels A and B - buffers should be set with the driver,

% and these MUST be passed with application buffers to the wrapper driver

% in order to ensure data is correctly copied.


overviewBufferSize  = 250000; % Size of the buffer to collect data from buffer.

segmentIndex        = 0; 

ratioMode             = ps4000Enuminfo.enRatioMode.RATIO_MODE_NONE;


% Buffers to be passed to the driver

pDriverBufferChA = libpointer('int16Ptr', zeros(overviewBufferSize, 1));

pDriverBufferChB = libpointer('int16Ptr', zeros(overviewBufferSize, 1));


status.setDataBufferChA = invoke(ps4000DeviceObj, 'ps4000SetDataBufferWithMode', ...

    channelA, pDriverBufferChA, overviewBufferSize, segmentIndex, ratioMode);


status.setDataBufferChB = invoke(ps4000DeviceObj, 'ps4000SetDataBufferWithMode', ...

   channelB, pDriverBufferChB, overviewBufferSize, segmentIndex, ratioMode);


% Application Buffers - these are for copying from the driver into temporarily.

pAppBufferChA = libpointer('int16Ptr', zeros(overviewBufferSize, 1));

pAppBufferChB = libpointer('int16Ptr', zeros(overviewBufferSize, 1));


% Streaming properties and functions are located in the Instrument

% Driver's Streaming group.


streamingGroupObj = get(ps4000DeviceObj, 'Streaming');

streamingGroupObj = streamingGroupObj(1);


% Register application buffer and driver buffers (with the wrapper).


status.setAppAndDriverBuffersA = invoke(streamingGroupObj, 'setAppAndDriverBuffers', channelA, ...

    pAppBufferChA, pDriverBufferChA, overviewBufferSize);


status.setAppAndDriverBuffersB = invoke(streamingGroupObj, 'setAppAndDriverBuffers', channelB, ...

   pAppBufferChB, pDriverBufferChB, overviewBufferSize);


%% Start Streaming and Collect Data

% Use default value for streaming interval which is 1e-6 for 1 MS/s

% Collect data for 1 second with auto stop - maximum array size will depend

% on the PC's resources - type <matlab:doc('memory') |memory|> at the MATLAB command prompt for further

% information.


% To change the sample interval e.g 5 us for 200 kS/s. The call to

% |ps4000RunStreaming()| will output the actual sampling interval used by the

% driver.

%set(streamingGroupObj, 'streamingInterval', 5e-6);


% For 10 MS/s, specify 100 ns

%set(streamingGroupObj, 'streamingInterval', 100e-9);


% Set the number of pre- and post-trigger samples

% If no trigger is set the library will still store the

% |numPreTriggerSamples| + |numPostTriggerSamples|.

set(ps4000DeviceObj, 'numPreTriggerSamples', 0);

set(ps4000DeviceObj, 'numPostTriggerSamples', 10000000); %Tiempo durante el que trabaja el streaming en us


% autoStop parameter can be set to false (0)

%set(streamingGroupObj, 'autoStop', PicoConstants.FALSE);


% Set other streaming parameters

downSampleRatio     = 1;


% Defined buffers to store data collected from the channels. If capturing

% data without using the autoStop flag, or if using a trigger with the

% autoStop flag, allocate sufficient space (1.5 times the sum of the number of

% pre-trigger and post-trigger samples is shown below) to allow for

% additional pre-trigger data. Pre-allocating the array is more efficient

% than using <matlab:doc('vertcat') |vertcat|> to combine data.


maxSamples = get(ps4000DeviceObj, 'numPreTriggerSamples') + ...

    get(ps4000DeviceObj, 'numPostTriggerSamples');


% Take into account the downSampleRatioMode - required if collecting data

% without a trigger and using the autoStop flag.

% finalBufferLength = round(1.5 * maxSamples / downSampleRatio);


pBufferChAFinal = libpointer('int16Ptr', zeros(maxSamples, 1, 'int16'));

pBufferChBFinal = libpointer('int16Ptr', zeros(maxSamples, 1, 'int16'));


% Prompt User to indicate if they wish to plot live streaming data.

plotLiveData = questionDialog('Plot live streaming data?', 'Streaming Data Plot');


if (plotLiveData == PicoConstants.TRUE)

 

    disp('Live streaming data collection with second plot on completion.');

  

else

  

    disp('Streaming data plot on completion.');

  

end


[status.runStreaming, actualSampleInterval, sampleIntervalTimeUnitsStr] = ...

    invoke(streamingGroupObj, 'ps4000RunStreaming', downSampleRatio, overviewBufferSize);

  

disp('Streaming data...');

fprintf('Click the STOP button to stop capture or wait for auto stop if enabled.\n\n')


% Variables to be used when collecting the data:


hasAutoStopped      = PicoConstants.FALSE;

newSamples          = 0; % Number of new samples returned from the driver.

previousTotal       = 0; % The previous total number of samples.

totalSamples        = 0; % Total samples captured by the device.

startIndex          = 0; % Start index of data in the buffer returned.

hasTriggered        = 0; % To indicate if trigger has occurred.

triggeredAtIndex    = 0; % The index in the overall buffer where the trigger occurred.


time = zeros(overviewBufferSize / downSampleRatio, 1);    % Array to hold time values


status.getStreamingLatestValues = PicoStatus.PICO_OK; % OK


% Display a 'Stop' button.

[stopFig.h, stopFig.h] = stopButton();           

            

flag = 1; % Use flag variable to indicate if stop button has been clicked (0)

setappdata(gcf, 'run', flag);


% Plot Properties - these are for displaying data as it is collected.


if (plotLiveData == PicoConstants.TRUE)

  

    % Plot on a single figure

    figure1 = figure('Name','PicoScope 4000 Series Example - Streaming Mode Capture', ...

         'NumberTitle','off');


     axes1 = axes('Parent', figure1);


    % Estimate x-axis limit to try and avoid using too much CPU resources

    % when drawing - use max voltage range selected if plotting multiple

    % channels on the same graph.

  

    xlim(axes1, [0 (actualSampleInterval * maxSamples)]);


    yRange = max(channelARangeMv, channelBRangeMv);

    ylim(axes1,[(-1 * yRange) yRange]);


    hold(axes1,'on');

    grid(axes1, 'on');


    title(axes1, 'Live Streaming Data Capture');

  

    if (strcmp(sampleIntervalTimeUnitsStr, 'us'))

      

        xLabelStr = 'Time (\mus)';

      

    else

      

        xLabelStr = strcat('Time (', sampleIntervalTimeUnitsStr, ')');

        xlabel(axes1, xLabelStr);

      

    end

  

    xlabel(axes1, xLabelStr);

    ylabel(axes1, 'Voltage (mV)');

  

end


% Get data values as long as autoStop flag is not set (check for STOP button push inside loop)

while (hasAutoStopped == PicoConstants.FALSE && status.getStreamingLatestValues == PicoStatus.PICO_OK)

  

    ready = PicoConstants.FALSE;

 

    while (ready == PicoConstants.FALSE)


       status.getStreamingLatestValues = invoke(streamingGroupObj, 'getStreamingLatestValues');

      

       ready = invoke(streamingGroupObj, 'isReady');


       % Give option to abort from here

       flag = getappdata(gcf, 'run');

       drawnow;


       if (flag == 0)


            disp('STOP button clicked - aborting data collection.')

            break;


       end


       drawnow;


    end

  

    % Check for data

    [newSamples, startIndex] = invoke(streamingGroupObj, 'availableData');


    if (newSamples > 0)

      

        % Check if the scope has triggered

        [triggered, triggeredAt] = invoke(streamingGroupObj, 'isTriggerReady');


        if (triggered == PicoConstants.TRUE)


            % Adjust trigger position as MATLAB does not use zero-based

            % indexing

          

            bufferTriggerPosition = triggeredAt + 1;

          

            fprintf('Triggered - index in buffer: %d\n', bufferTriggerPosition);


            hasTriggered = triggered;


            % Adjust by 1 due to driver using zero indexing

            triggeredAtIndex = totalSamples + bufferTriggerPosition;


        end


        previousTotal = totalSamples;

        totalSamples = totalSamples + newSamples;


        % Printing to console can slow down acquisition - use for demonstration

        fprintf('Collected %d samples, startIndex: %d total: %d.\n', newSamples, startIndex, totalSamples);

      

        % Position indices of data in buffer

        firstValuePosn = startIndex + 1;

        lastValuePosn = startIndex + newSamples;

      

        % Convert data values to millivolts from the application buffers

        bufferChAmV = adc2mv(pAppBufferChA.Value(firstValuePosn:lastValuePosn), channelARangeMv, maxADCCount);

        bufferChBmV = adc2mv(pAppBufferChB.Value(firstValuePosn:lastValuePosn), channelBRangeMv, maxADCCount);


        % Process collected data further if required - this example plots

        % the data if the User has selected 'Yes' at the prompt.

      

        % Copy data into the final buffer(s)

        pBufferChAFinal.Value(previousTotal + 1:totalSamples) = bufferChAmV;

        pBufferChBFinal.Value(previousTotal + 1:totalSamples) = bufferChBmV;

      

        if (plotLiveData == PicoConstants.TRUE)

          

            % Time axis

            % Multiply by ratio mode as samples get reduced.

            time = (double(actualSampleInterval) * double(downSampleRatio)) * (previousTotaltotalSamples - 1));

      

            plot(time, bufferChAmV);


        end


        % Clear variables for use again

        clear bufferChAMV;

        clear firstValuePosn;

        clear lastValuePosn;

        clear startIndex;

        clear triggered;

        clear triggerAt;

 

    end

 

    % Check if auto stop has occurred

    hasAutoStopped = invoke(streamingGroupObj, 'autoStopped');


    if (hasAutoStopped == PicoConstants.TRUE)


       disp('AutoStop: TRUE - exiting loop.');

       break;


    end

 

    % Check if 'STOP' button pressed


    flag = getappdata(gcf, 'run');

    drawnow;


    if (flag == 0)


        disp('STOP button clicked - aborting data collection.')

        break;

      

    end

 

end


% Close the STOP button window

if (exist('stopFig', 'var'))

  

    close('Stop Button');

    clear stopFig;

      

end


if (plotLiveData == PicoConstants.TRUE)

  

    drawnow;

  

    % Take hold off the current figure.

    hold(axes1, 'off');

    movegui(figure1, 'west');

  

end


if (hasTriggered == PicoConstants.TRUE)

 

    fprintf('Triggered at overall index: %d\n', triggeredAtIndex);

  

end


fprintf('\n');


%% Stop the Device

% This function should be called regardless of whether auto stop is enabled

% or not.


status.stop = invoke(ps4000DeviceObj, 'ps4000Stop');


%% Find the Number of Samples.

% This is the number of samples held in the driver itself. The actual

% number of samples collected when using a trigger is likely to be greater.


[status.noOfStreamingValues, numStreamingValues] = invoke(streamingGroupObj, 'ps4000NoOfStreamingValues');


fprintf('Number of samples available from the driver: %u.\n\n', numStreamingValues);


%% Process Data

% Process data post-capture if required - here the data will be plotted in

% a new figure.


% Reduce size of arrays if required

if (totalSamples < maxSamples)

  

    pBufferChAFinal.Value(totalSamples + 1:end) = [];

    pBufferChBFinal.Value(totalSamples + 1:end) = [];

 

end


% Retrieve data for the channels.

channelAFinal = pBufferChAFinal.Value();

channelBFinal = pBufferChBFinal.Value();


% Plot total data collected on another figure.

finalFigure = figure('Name','PicoScope 4000 Series Example - Streaming Mode Capture', ...

    'NumberTitle','off');

  

finalFigureAxes = axes('Parent', finalFigure);

movegui(finalFigure, 'east');

hold(finalFigureAxes, 'on');


title(finalFigureAxes, 'Streaming Data Acquisition (Final)');


if (strcmp(sampleIntervalTimeUnitsStr, 'us'))

      

    xlabel(finalFigureAxes, 'Time (\mus)');


else


    xLabelStr = strcat('Time (', sampleIntervalTimeUnitsStr, ')');

    xlabel(finalFigureAxes, xLabelStr);


end


ylabel(finalFigureAxes, 'Voltage (mV)');


% Find the maximum voltage range

maxYRange = max(channelARangeMv, channelBRangeMv);

ylim(finalFigureAxes,[(-1 * maxYRange) maxYRange]);


% Calculate values for time axis, then plot.

timeAxisValues = (double(actualSampleInterval) * double(downSampleRatio)) * (0:length(channelAFinal) - 1);

plot(finalFigureAxes, timeAxisValues, channelAFinal);


grid(finalFigureAxes, 'on');

legend(finalFigureAxes, 'Channel A', 'Channel B');

hold(finalFigureAxes, 'off');


%% Avisos de error

% Implementa la condición de error

errorValue = 5000; % Valor que activa la condición de error

errorTimeStart = 4000000; % Segundo inicial (us)

errorTimeEnd = 6000000;   % Segundo final (us)


% Encuentra índices para los segundos 4 y 6

startIndexError = find(timeAxisValues >= errorTimeStart, 1);

endIndexError = find(timeAxisValues >= errorTimeEnd, 1);


% Verifica si el valor de error está presente entre los segundos 4 y 6

if any(channelAFinal(startIndexError:endIndexError) >= errorValue)

    f = msgbox("Caution! 5V or more between 4th and 6th seconds","Error","error");

end


%Condición para detectar picos de voltaje no deseados

if ((max(channelAFinal)>10000)||(min(channelAFinal)<-10000)) %Condición: si en el eje y se pasan los limites

    f = msgbox("Caution! 10V or more","Error","error"); %Salta comunicado de error

elseif any(channelAFinal(startIndexError:endIndexError) >= errorValue) %Si se da el error anterior no devolver nada

  

else

    f = msgbox("The operation has been successfully completed","Success"); %si no se detecta pico todo correcto

end


%% Disconnect Device

% Disconnect device object from hardware.


disconnect(ps4000DeviceObj);

delete(ps4000DeviceObj);


A este código quiero cambiarle la activación del trigger para que empiece directamente a capturar datos y hacer el plotting en streaming después de detectar cualquier flanco de subida o bajada, y he llegado a este punto:


%% PicoScope 4000 Series Instrument Driver Oscilloscope Streaming Data Capture Example

% This is an example of an instrument control session using a device

% object. The instrument control session comprises all the steps you are

% likely to take when communicating with your instrument.

%     

% These steps are:

%   

% # Create a device object 

% # Connect to the instrument

% # Configure properties

% # Invoke functions

% # Disconnect from the instrument

%

% To run the instrument control session, type the name of the file,

% PS4000_ID_Streaming_Example, at the MATLAB command prompt.

%

% The file, PS4000_ID_STREAMING_EXAMPLE.M must be on your MATLAB PATH. For

% additional information on setting your MATLAB PATH, type 'help addpath'

% at the MATLAB command prompt.

%

% Example:

%     PS4000_ID_Streaming_Example;

%

% Description:

%     Demonstrates how to set properties and call functions in order

%     to capture data in streaming mode from a PicoScope 4000 Series

%     Oscilloscope.

%

% Note: Not all device and group object functions used in this example

% are compatible with the Test and Measurement Tool.

%

% See also: <matlab:doc('icdevice') |icdevice|> | <matlab:doc('instrument/invoke') |invoke|>

%

% Copyright: © 2015-2017 Pico Technology Ltd. See LICENSE file for terms.


%% Suggested Input Test Signals

% This example was published using the following test signals:

%

% * Channel A: 3 Vpp, 1 Hz sine wave

% * Channel B: 2 Vpp, 4 Hz square wave


%% Clear Command Window and Close any Figures


clc;

close all;


%% Load Configuration Information


PS4000Config;


%% Parameter Definitions

% Define any parameters that might be required throughout the script.


channelA = ps4000Enuminfo.enPS4000Channel.PS4000_CHANNEL_A;

channelB = ps4000Enuminfo.enPS4000Channel.PS4000_CHANNEL_B;


%% Device Connection


% Check if an Instrument session using the device object |ps4000DeviceObj|

% is still open, and if so, disconnect if the User chooses 'Yes' when prompted.

if (exist('ps4000DeviceObj', 'var') && ps4000DeviceObj.isvalid && strcmp(ps4000DeviceObj.status, 'open'))

  

    openDevice = questionDialog(['Device object ps4000DeviceObj has an open connection. ' ...

        'Do you wish to close the connection and continue?'], ...

        'Device Object Connection Open');

  

    if (openDevice == PicoConstants.TRUE)

      

        % Close connection to device

        disconnect(ps4000DeviceObj);

        delete(ps4000DeviceObj);

      

    else


        % Exit script if User selects 'No'

        return;

      

    end

  

end


% Create device -  specify serial number if required

% Specify serial number as 2nd argument if required.

ps4000DeviceObj = icdevice('picotech_ps4000_generic', '');


% Connect device

connect(ps4000DeviceObj);


%% Display Unit Information From Shared Library


[infoStatus, unitInfo] = invoke(ps4000DeviceObj, 'getUnitInfo');


disp(unitInfo);


%% Channel Setup

% All channels are enabled by default - switch off all except Channels A and B.


numChannels = get(ps4000DeviceObj, 'channelCount');


% Channel A

channelSettings(1).enabled = PicoConstants.TRUE;

channelSettings(1).coupling = 1;

channelSettings(1).range = ps4000Enuminfo.enPS4000Range.PS4000_20V; %limite de voltaje del canal


channelARangeMv = PicoConstants.SCOPE_INPUT_RANGES(channelSettings(1).range + 1);


% Channel B

channelSettings(2).enabled = PicoConstants.TRUE;

channelSettings(2).coupling = 1;

channelSettings(2).range = ps4000Enuminfo.enPS4000Range.PS4000_2V;


channelBRangeMv = PicoConstants.SCOPE_INPUT_RANGES(channelSettings(2).range + 1);


if (numChannels == PicoConstants.QUAD_SCOPE)


    % Channel C

    channelSettings(3).enabled = PicoConstants.FALSE;

    channelSettings(3).coupling = 1;

    channelSettings(3).range = ps4000Enuminfo.enPS4000Range.PS4000_2V;



    % Channel D

    channelSettings(4).enabled = PicoConstants.FALSE;

    channelSettings(4).coupling = 1;

    channelSettings(4).range = ps4000Enuminfo.enPS4000Range.PS4000_2V;


end


% Keep the status values returned from the driver.

for ch = 1:numChannels

 

    status.setChannelStatus(ch) = invoke(ps4000DeviceObj, 'ps4000SetChannel', ...

        (ch - 1), channelSettings(ch).enabled, ...

        channelSettings(ch).coupling, channelSettings(ch).range);

  

end


% Obtain the maximum ADC Count from the driver

maxADCCount = double(get(ps4000DeviceObj, 'maxADCValue'));


%% Set Data Buffers

% Data buffers for channels A and B - buffers should be set with the driver,

% and these MUST be passed with application buffers to the wrapper driver

% in order to ensure data is correctly copied.


overviewBufferSize  = 250000; % Size of the buffer to collect data from buffer.

segmentIndex        = 0; 

ratioMode             = ps4000Enuminfo.enRatioMode.RATIO_MODE_NONE;


% Buffers to be passed to the driver

pDriverBufferChA = libpointer('int16Ptr', zeros(overviewBufferSize, 1));

pDriverBufferChB = libpointer('int16Ptr', zeros(overviewBufferSize, 1));


status.setDataBufferChA = invoke(ps4000DeviceObj, 'ps4000SetDataBufferWithMode', ...

    channelA, pDriverBufferChA, overviewBufferSize, segmentIndex, ratioMode);


status.setDataBufferChB = invoke(ps4000DeviceObj, 'ps4000SetDataBufferWithMode', ...

   channelB, pDriverBufferChB, overviewBufferSize, segmentIndex, ratioMode);


% Application Buffers - these are for copying from the driver into temporarily.

pAppBufferChA = libpointer('int16Ptr', zeros(overviewBufferSize, 1));

pAppBufferChB = libpointer('int16Ptr', zeros(overviewBufferSize, 1));


% Streaming properties and functions are located in the Instrument

% Driver's Streaming group.


streamingGroupObj = get(ps4000DeviceObj, 'Streaming');

streamingGroupObj = streamingGroupObj(1);


% Register application buffer and driver buffers (with the wrapper).


status.setAppAndDriverBuffersA = invoke(streamingGroupObj, 'setAppAndDriverBuffers', channelA, ...

    pAppBufferChA, pDriverBufferChA, overviewBufferSize);


status.setAppAndDriverBuffersB = invoke(streamingGroupObj, 'setAppAndDriverBuffers', channelB, ...

   pAppBufferChB, pDriverBufferChB, overviewBufferSize);


%% Trigger Setup

% Configurar el trigger para activarse con flancos de subida o bajada en el canal deseado.


% Especificar el canal para el trigger

triggerChannel = channelA;


% Definir el nivel del trigger en mV

triggerLevel_mv = 1000;


% Definir la dirección del trigger (0 para RISING_OR_FALLING)

triggerDirection = 0;


% Configurar las condiciones del trigger en el canal especificado

[status.setTrigger, state] = ps4000SetTriggerChannelConditions(ps4000DeviceObj, ...

    triggerChannel, triggerLevel_mv, triggerDirection, ...

    triggerChannel, 0, triggerChannel, 0, 0);


if status.setTrigger == PicoStatus.PICO_OK

    disp('Trigger set successfully.');

else

    disp('Error setting trigger.');

end


%% Start the Device with Trigger

% Iniciar el dispositivo para captura con trigger.


status.runBlock = ps4000RunBlock(ps4000DeviceObj, 0);


if status.runBlock == PicoStatus.PICO_OK

    disp('Device started successfully with trigger.');

else

    disp('Error starting device with trigger.');

end


%% Wait for Trigger

% Esperar hasta que se active el trigger.


timeout_ms = 10000; % Esperar hasta 10 segundos para el trigger.


[status.waitTrigger] = ps4000WaitReadyTrigger(ps4000DeviceObj, timeout_ms);


if status.waitTrigger == PicoStatus.PICO_OK

    disp('Trigger occurred.');

else

    disp('Timeout waiting for trigger.');

end



%% Start the Device with Trigger

% Iniciar el dispositivo para captura con trigger.


status.runBlock = ps4000RunBlock(ps4000DeviceObj, 0);


if status.runBlock == PicoStatus.PICO_OK

    disp('Device started successfully with trigger.');

else

    disp('Error starting device with trigger.');

end


%% Wait for Trigger

% Esperar hasta que se active el trigger.


timeout_ms = 10000; % Esperar hasta 10 segundos para el trigger.


[status.waitTrigger] = ps4000WaitReadyTrigger(ps4000DeviceObj, timeout_ms);


if status.waitTrigger == PicoStatus.PICO_OK

    disp('Trigger occurred.');

else

    disp('Timeout waiting for trigger.');

end



%% Start Streaming and Collect Data

% Use default value for streaming interval which is 1e-6 for 1 MS/s

% Collect data for 1 second with auto stop - maximum array size will depend

% on the PC's resources - type <matlab:doc('memory') |memory|> at the MATLAB command prompt for further

% information.


% To change the sample interval e.g 5 us for 200 kS/s. The call to

% |ps4000RunStreaming()| will output the actual sampling interval used by the

% driver.

%set(streamingGroupObj, 'streamingInterval', 5e-6);


% For 10 MS/s, specify 100 ns

%set(streamingGroupObj, 'streamingInterval', 100e-9);


% Set the number of pre- and post-trigger samples

% If no trigger is set the library will still store the

% |numPreTriggerSamples| + |numPostTriggerSamples|.

set(ps4000DeviceObj, 'numPreTriggerSamples', 0);

set(ps4000DeviceObj, 'numPostTriggerSamples', 10000000); %Tiempo durante el que trabaja el streaming en us


% autoStop parameter can be set to false (0)

%set(streamingGroupObj, 'autoStop', PicoConstants.FALSE);


% Set other streaming parameters

downSampleRatio     = 1;


% Defined buffers to store data collected from the channels. If capturing

% data without using the autoStop flag, or if using a trigger with the

% autoStop flag, allocate sufficient space (1.5 times the sum of the number of

% pre-trigger and post-trigger samples is shown below) to allow for

% additional pre-trigger data. Pre-allocating the array is more efficient

% than using <matlab:doc('vertcat') |vertcat|> to combine data.


maxSamples = get(ps4000DeviceObj, 'numPreTriggerSamples') + ...

    get(ps4000DeviceObj, 'numPostTriggerSamples');


% Take into account the downSampleRatioMode - required if collecting data

% without a trigger and using the autoStop flag.

% finalBufferLength = round(1.5 * maxSamples / downSampleRatio);


pBufferChAFinal = libpointer('int16Ptr', zeros(maxSamples, 1, 'int16'));

pBufferChBFinal = libpointer('int16Ptr', zeros(maxSamples, 1, 'int16'));


% Prompt User to indicate if they wish to plot live streaming data.

plotLiveData = questionDialog('Plot live streaming data?', 'Streaming Data Plot');


if (plotLiveData == PicoConstants.TRUE)

 

    disp('Live streaming data collection with second plot on completion.');

  

else

  

    disp('Streaming data plot on completion.');

  

end


[status.runStreaming, actualSampleInterval, sampleIntervalTimeUnitsStr] = ...

    invoke(streamingGroupObj, 'ps4000RunStreaming', downSampleRatio, overviewBufferSize);

  

disp('Streaming data...');

fprintf('Click the STOP button to stop capture or wait for auto stop if enabled.\n\n')


% Variables to be used when collecting the data:


hasAutoStopped      = PicoConstants.FALSE;

newSamples          = 0; % Number of new samples returned from the driver.

previousTotal       = 0; % The previous total number of samples.

totalSamples        = 0; % Total samples captured by the device.

startIndex          = 0; % Start index of data in the buffer returned.

hasTriggered        = 0; % To indicate if trigger has occurred.

triggeredAtIndex    = 0; % The index in the overall buffer where the trigger occurred.


time = zeros(overviewBufferSize / downSampleRatio, 1);    % Array to hold time values


status.getStreamingLatestValues = PicoStatus.PICO_OK; % OK


% Display a 'Stop' button.

[stopFig.h, stopFig.h] = stopButton();           

            

flag = 1; % Use flag variable to indicate if stop button has been clicked (0)

setappdata(gcf, 'run', flag);


% Plot Properties - these are for displaying data as it is collected.


if (plotLiveData == PicoConstants.TRUE)

  

    % Plot on a single figure

    figure1 = figure('Name','PicoScope 4000 Series Example - Streaming Mode Capture', ...

         'NumberTitle','off');


     axes1 = axes('Parent', figure1);


    % Estimate x-axis limit to try and avoid using too much CPU resources

    % when drawing - use max voltage range selected if plotting multiple

    % channels on the same graph.

  

    xlim(axes1, [0 (actualSampleInterval * maxSamples)]);


    yRange = max(channelARangeMv, channelBRangeMv);

    ylim(axes1,[(-1 * yRange) yRange]);


    hold(axes1,'on');

    grid(axes1, 'on');


    title(axes1, 'Live Streaming Data Capture');

  

    if (strcmp(sampleIntervalTimeUnitsStr, 'us'))

      

        xLabelStr = 'Time (\mus)';

      

    else

      

        xLabelStr = strcat('Time (', sampleIntervalTimeUnitsStr, ')');

        xlabel(axes1, xLabelStr);

      

    end

  

    xlabel(axes1, xLabelStr);

    ylabel(axes1, 'Voltage (mV)');

  

end


% Get data values as long as autoStop flag is not set (check for STOP button push inside loop)

while (hasAutoStopped == PicoConstants.FALSE && status.getStreamingLatestValues == PicoStatus.PICO_OK)

  

    ready = PicoConstants.FALSE;

 

    while (ready == PicoConstants.FALSE)


       status.getStreamingLatestValues = invoke(streamingGroupObj, 'getStreamingLatestValues');

      

       ready = invoke(streamingGroupObj, 'isReady');


       % Give option to abort from here

       flag = getappdata(gcf, 'run');

       drawnow;


       if (flag == 0)


            disp('STOP button clicked - aborting data collection.')

            break;


       end


       drawnow;


    end

  

    % Check for data

    [newSamples, startIndex] = invoke(streamingGroupObj, 'availableData');


    if (newSamples > 0)

      

        % Check if the scope has triggered

        [triggered, triggeredAt] = invoke(streamingGroupObj, 'isTriggerReady');


        if (triggered == PicoConstants.TRUE)


            % Adjust trigger position as MATLAB does not use zero-based

            % indexing

          

            bufferTriggerPosition = triggeredAt + 1;

          

            fprintf('Triggered - index in buffer: %d\n', bufferTriggerPosition);


            hasTriggered = triggered;


            % Adjust by 1 due to driver using zero indexing

            triggeredAtIndex = totalSamples + bufferTriggerPosition;


        end


        previousTotal = totalSamples;

        totalSamples = totalSamples + newSamples;


        % Printing to console can slow down acquisition - use for demonstration

        fprintf('Collected %d samples, startIndex: %d total: %d.\n', newSamples, startIndex, totalSamples);

      

        % Position indices of data in buffer

        firstValuePosn = startIndex + 1;

        lastValuePosn = startIndex + newSamples;

      

        % Convert data values to millivolts from the application buffers

        bufferChAmV = adc2mv(pAppBufferChA.Value(firstValuePosn:lastValuePosn), channelARangeMv, maxADCCount);

        bufferChBmV = adc2mv(pAppBufferChB.Value(firstValuePosn:lastValuePosn), channelBRangeMv, maxADCCount);


        % Process collected data further if required - this example plots

        % the data if the User has selected 'Yes' at the prompt.

      

        % Copy data into the final buffer(s)

        pBufferChAFinal.Value(previousTotal + 1:totalSamples) = bufferChAmV;

        pBufferChBFinal.Value(previousTotal + 1:totalSamples) = bufferChBmV;

      

        if (plotLiveData == PicoConstants.TRUE)

          

            % Time axis

            % Multiply by ratio mode as samples get reduced.

            time = (double(actualSampleInterval) * double(downSampleRatio)) * (previousTotaltotalSamples - 1));

      

            plot(time, bufferChAmV);


        end


        % Clear variables for use again

        clear bufferChAMV;

        clear firstValuePosn;

        clear lastValuePosn;

        clear startIndex;

        clear triggered;

        clear triggerAt;

 

    end

 

    % Check if auto stop has occurred

    hasAutoStopped = invoke(streamingGroupObj, 'autoStopped');


    if (hasAutoStopped == PicoConstants.TRUE)


       disp('AutoStop: TRUE - exiting loop.');

       break;


    end

 

    % Check if 'STOP' button pressed


    flag = getappdata(gcf, 'run');

    drawnow;


    if (flag == 0)


        disp('STOP button clicked - aborting data collection.')

        break;

      

    end

 

end


% Close the STOP button window

if (exist('stopFig', 'var'))

  

    close('Stop Button');

    clear stopFig;

      

end


if (plotLiveData == PicoConstants.TRUE)

  

    drawnow;

  

    % Take hold off the current figure.

    hold(axes1, 'off');

    movegui(figure1, 'west');

  

end


if (hasTriggered == PicoConstants.TRUE)

 

    fprintf('Triggered at overall index: %d\n', triggeredAtIndex);

  

end


fprintf('\n');


%% Stop the Device

% This function should be called regardless of whether auto stop is enabled

% or not.


status.stop = invoke(ps4000DeviceObj, 'ps4000Stop');


%% Find the Number of Samples.

% This is the number of samples held in the driver itself. The actual

% number of samples collected when using a trigger is likely to be greater.


[status.noOfStreamingValues, numStreamingValues] = invoke(streamingGroupObj, 'ps4000NoOfStreamingValues');


fprintf('Number of samples available from the driver: %u.\n\n', numStreamingValues);


%% Process Data

% Process data post-capture if required - here the data will be plotted in

% a new figure.


% Reduce size of arrays if required

if (totalSamples < maxSamples)

  

    pBufferChAFinal.Value(totalSamples + 1:end) = [];

    pBufferChBFinal.Value(totalSamples + 1:end) = [];

 

end


% Retrieve data for the channels.

channelAFinal = pBufferChAFinal.Value();

channelBFinal = pBufferChBFinal.Value();


% Plot total data collected on another figure.

finalFigure = figure('Name','PicoScope 4000 Series Example - Streaming Mode Capture', ...

    'NumberTitle','off');

  

finalFigureAxes = axes('Parent', finalFigure);

movegui(finalFigure, 'east');

hold(finalFigureAxes, 'on');


title(finalFigureAxes, 'Streaming Data Acquisition (Final)');


if (strcmp(sampleIntervalTimeUnitsStr, 'us'))

      

    xlabel(finalFigureAxes, 'Time (\mus)');


else


    xLabelStr = strcat('Time (', sampleIntervalTimeUnitsStr, ')');

    xlabel(finalFigureAxes, xLabelStr);


end


ylabel(finalFigureAxes, 'Voltage (mV)');


% Find the maximum voltage range

maxYRange = max(channelARangeMv, channelBRangeMv);

ylim(finalFigureAxes,[(-1 * maxYRange) maxYRange]);


% Calculate values for time axis, then plot.

timeAxisValues = (double(actualSampleInterval) * double(downSampleRatio)) * (0:length(channelAFinal) - 1);

plot(finalFigureAxes, timeAxisValues, channelAFinal);


grid(finalFigureAxes, 'on');

legend(finalFigureAxes, 'Channel A', 'Channel B');

hold(finalFigureAxes, 'off');


% Implementa la condición de error

errorValue = 5000; % Valor que activa la condición de error

errorTimeStart = 4000000; % Segundo inicial (us)

errorTimeEnd = 6000000;   % Segundo final (us)


% Encuentra índices para los segundos 4 y 6

startIndexError = find(timeAxisValues >= errorTimeStart, 1);

endIndexError = find(timeAxisValues >= errorTimeEnd, 1);


% Verifica si el valor de error está presente entre los segundos 4 y 6

if any(channelAFinal(startIndexError:endIndexError) >= errorValue)

    f = msgbox("Caution! 5V or more between 4th and 6th seconds","Error","error");

end


%Condición para detectar picos de voltaje no deseados

if ((max(channelAFinal)>10000)||(min(channelAFinal)<-10000)) %Condición: si en el eje y se pasan los limites

    f = msgbox("Caution! 10V or more","Error","error"); %Salta comunicado de error

elseif any(channelAFinal(startIndexError:endIndexError) >= errorValue) %Si se da el error anterior no devolver nada

  

else

    f = msgbox("The operation has been successfully completed","Success"); %si no se detecta pico todo correcto

end


%% Disconnect Device

% Disconnect device object from hardware.


disconnect(ps4000DeviceObj);

delete(ps4000DeviceObj);


Pero me devuelve el siguiente error y me he atascado:


Incorrect number or types of inputs or outputs for function ps4000SetTriggerChannelConditions.


Error in PS4000_ID_Streaming_Example_Trigger (line 191)

[status.setTrigger, state] = ps4000SetTriggerChannelConditions(ps4000DeviceObj, ...
Ahora no se como modificar esa función para poder hacer que funcione, si alguien tiene alguna idea es muy bien venida, muchas gracias a todos.
 
Si quieres que te ayudemos, lo primero que tienes que hacer es separar el código de tus comentarios, porque está todo mezclado junto con los comentarios del código en inglés y no hay quien entienda nada.

Para dar formato al código como lo que es, introdúcelo entre etiquetas CODE e ICODE
así
Utiliza las opciones de la barra de herramientas de edición de texto y usa su Vista Previa para ver cómo queda.

-------------------------

Así y todo, algo si se ve:


"Incorrect number or types of inputs or outputs for function ps4000SetTriggerChannelConditions."
osea
Número incorrecto de tipos de entradas o salidas de la función ps4000SetTriggerChannelConditions

Error in PS4000_ID_Streaming_Example_Trigger (line 191) [status.setTrigger, state] = ps4000SetTriggerChannelConditions(ps4000DeviceObj, ...

Y tu has puesto:


[status.setTrigger, state] = ps4000SetTriggerChannelConditions(ps4000DeviceObj, ... triggerChannel, triggerLevel_mv, triggerDirection, ... triggerChannel, 0, triggerChannel, 0, 0);


A esa función le estás pasando 9 parámetros y uno de ellos (triggerChannel) está repetido en tres sitios.
Verifica cuántos parámetros y de qué tipo han de ser pasados a esa función.

Comprueba tambien si es status.setTrigger y no status.setTrigger, state porque la siguientes líneas son un bonito condicional:

if status.setTrigger == PicoStatus.PICO_OK disp('Trigger set successfully.'); else disp('Error setting trigger.'); end
 
Última edición:
Nlrvana dijo:
Si quieres que te ayudemos, lo primero que tienes que hacer es separar el código de tus comentarios, porque está todo mezclado junto con los comentarios del código en inglés y no hay quien entienda nada.

Para dar formato al código como lo que es, introdúcelo entre etiquetas CODE e ICODE
así
Utiliza las opciones de la barra de herramientas de edición de texto y usa su Vista Previa para ver cómo queda.

-------------------------

Así y todo, algo si se ve:


"Incorrect number or types of inputs or outputs for function ps4000SetTriggerChannelConditions."
osea
Número incorrecto de tipos de entradas o salidas de la función ps4000SetTriggerChannelConditions

Error in PS4000_ID_Streaming_Example_Trigger (line 191) [status.setTrigger, state] = ps4000SetTriggerChannelConditions(ps4000DeviceObj, ...

Y tu has puesto:


[status.setTrigger, state] = ps4000SetTriggerChannelConditions(ps4000DeviceObj, ... triggerChannel, triggerLevel_mv, triggerDirection, ... triggerChannel, 0, triggerChannel, 0, 0);


A esa función le estás pasando 9 parámetros y uno de ellos (triggerChannel) está repetido en tres sitios.
Verifica cuántos parámetros y de que tipo han de ser pasados a esa función.
Hacer clic para expandir...
Ah, vale, gracias, no sabía la posibilidad de poner el código en ese formato, soy nuevo en el foro, y he intentado ponerlo lo más ordenado posible, aún así, si, ya entendía lo que me decía el error, pero no he encontrado más info sobre la función en la programmers guide del Picoscope 4000 series. Intentaré darle una repasada próximamente. Ya lo siento por mi desconocimiento sobre las opciones del foro a la hora de poner código, gracias.

Vuelvo a poner los códigos como has pedido, código original:

Código: 
%% PicoScope 4000 Series Instrument Driver Oscilloscope Streaming Data Capture Example
% This is an example of an instrument control session using a device
% object. The instrument control session comprises all the steps you are
% likely to take when communicating with your instrument.
%
% These steps are:
%
% # Create a device object
% # Connect to the instrument
% # Configure properties
% # Invoke functions
% # Disconnect from the instrument
%
% To run the instrument control session, type the name of the file,
% PS4000_ID_Streaming_Example, at the MATLAB command prompt.
%
% The file, PS4000_ID_STREAMING_EXAMPLE.M must be on your MATLAB PATH. For
% additional information on setting your MATLAB PATH, type 'help addpath'
% at the MATLAB command prompt.
%
% Example:
% PS4000_ID_Streaming_Example;
%
% Description:
% Demonstrates how to set properties and call functions in order
% to capture data in streaming mode from a PicoScope 4000 Series
% Oscilloscope.
%
% Note: Not all device and group object functions used in this example
% are compatible with the Test and Measurement Tool.
%
% See also: <matlab:doc('icdevice') |icdevice|> | <matlab:doc('instrument/invoke') |invoke|>
%
% Copyright: © 2015-2017 Pico Technology Ltd. See LICENSE file for terms.

%% Suggested Input Test Signals
% This example was published using the following test signals:
%
% * Channel A: 3 Vpp, 1 Hz sine wave
% * Channel B: 2 Vpp, 4 Hz square wave

%% Clear Command Window and Close any Figures

clc;
close all;

%% Load Configuration Information

PS4000Config;

%% Parameter Definitions
% Define any parameters that might be required throughout the script.

channelA = ps4000Enuminfo.enPS4000Channel.PS4000_CHANNEL_A;
channelB = ps4000Enuminfo.enPS4000Channel.PS4000_CHANNEL_B;

%% Device Connection

% Check if an Instrument session using the device object |ps4000DeviceObj|
% is still open, and if so, disconnect if the User chooses 'Yes' when prompted.
if (exist('ps4000DeviceObj', 'var') && ps4000DeviceObj.isvalid && strcmp(ps4000DeviceObj.status, 'open'))

openDevice = questionDialog(['Device object ps4000DeviceObj has an open connection. ' ...
'Do you wish to close the connection and continue?'], ...
'Device Object Connection Open');

if (openDevice == PicoConstants.TRUE)

% Close connection to device
disconnect(ps4000DeviceObj);
delete(ps4000DeviceObj);

else

% Exit script if User selects 'No'
return;

end

end

% Create device - specify serial number if required
% Specify serial number as 2nd argument if required.
ps4000DeviceObj = icdevice('picotech_ps4000_generic', '');

% Connect device
connect(ps4000DeviceObj);

%% Display Unit Information From Shared Library

[infoStatus, unitInfo] = invoke(ps4000DeviceObj, 'getUnitInfo');

disp(unitInfo);

%% Channel Setup
% All channels are enabled by default - switch off all except Channels A and B.

numChannels = get(ps4000DeviceObj, 'channelCount');

% Channel A
channelSettings(1).enabled = PicoConstants.TRUE;
channelSettings(1).coupling = 1;
channelSettings(1).range = ps4000Enuminfo.enPS4000Range.PS4000_20V; %limite de voltaje del canal

channelARangeMv = PicoConstants.SCOPE_INPUT_RANGES(channelSettings(1).range + 1);

% Channel B
channelSettings(2).enabled = PicoConstants.TRUE;
channelSettings(2).coupling = 1;
channelSettings(2).range = ps4000Enuminfo.enPS4000Range.PS4000_2V;

channelBRangeMv = PicoConstants.SCOPE_INPUT_RANGES(channelSettings(2).range + 1);

if (numChannels == PicoConstants.QUAD_SCOPE)

% Channel C
channelSettings(3).enabled = PicoConstants.FALSE;
channelSettings(3).coupling = 1;
channelSettings(3).range = ps4000Enuminfo.enPS4000Range.PS4000_2V;


% Channel D
channelSettings(4).enabled = PicoConstants.FALSE;
channelSettings(4).coupling = 1;
channelSettings(4).range = ps4000Enuminfo.enPS4000Range.PS4000_2V;

end

% Keep the status values returned from the driver.
for ch = 1:numChannels

status.setChannelStatus(ch) = invoke(ps4000DeviceObj, 'ps4000SetChannel', ...
(ch - 1), channelSettings(ch).enabled, ...
channelSettings(ch).coupling, channelSettings(ch).range);

end

% Obtain the maximum ADC Count from the driver
maxADCCount = double(get(ps4000DeviceObj, 'maxADCValue'));

%% Trigger Setup
% Turn off trigger
% If a trigger is set and the |autoStop| property of the Instrument
% Driver's Streaming group object is set to '1', the device will stop
% collecting data once the number of post trigger samples have been
% collected.

% Trigger properties and functions are located in the Instrument
% Driver's Trigger group.

triggerGroupObj = get(ps4000DeviceObj, 'Trigger');
triggerGroupObj = triggerGroupObj(1);

[status.setTriggerOff] = invoke(triggerGroupObj, 'setTriggerOff');

%% Set Data Buffers
% Data buffers for channels A and B - buffers should be set with the driver,
% and these MUST be passed with application buffers to the wrapper driver
% in order to ensure data is correctly copied.

overviewBufferSize = 250000; % Size of the buffer to collect data from buffer.
segmentIndex = 0;
ratioMode = ps4000Enuminfo.enRatioMode.RATIO_MODE_NONE;

% Buffers to be passed to the driver
pDriverBufferChA = libpointer('int16Ptr', zeros(overviewBufferSize, 1));
pDriverBufferChB = libpointer('int16Ptr', zeros(overviewBufferSize, 1));

status.setDataBufferChA = invoke(ps4000DeviceObj, 'ps4000SetDataBufferWithMode', ...
channelA, pDriverBufferChA, overviewBufferSize, segmentIndex, ratioMode);

status.setDataBufferChB = invoke(ps4000DeviceObj, 'ps4000SetDataBufferWithMode', ...
channelB, pDriverBufferChB, overviewBufferSize, segmentIndex, ratioMode);

% Application Buffers - these are for copying from the driver into temporarily.
pAppBufferChA = libpointer('int16Ptr', zeros(overviewBufferSize, 1));
pAppBufferChB = libpointer('int16Ptr', zeros(overviewBufferSize, 1));

% Streaming properties and functions are located in the Instrument
% Driver's Streaming group.

streamingGroupObj = get(ps4000DeviceObj, 'Streaming');
streamingGroupObj = streamingGroupObj(1);

% Register application buffer and driver buffers (with the wrapper).

status.setAppAndDriverBuffersA = invoke(streamingGroupObj, 'setAppAndDriverBuffers', channelA, ...
pAppBufferChA, pDriverBufferChA, overviewBufferSize);

status.setAppAndDriverBuffersB = invoke(streamingGroupObj, 'setAppAndDriverBuffers', channelB, ...
pAppBufferChB, pDriverBufferChB, overviewBufferSize);

%% Start Streaming and Collect Data
% Use default value for streaming interval which is 1e-6 for 1 MS/s
% Collect data for 1 second with auto stop - maximum array size will depend
% on the PC's resources - type <matlab:doc('memory') |memory|> at the MATLAB command prompt for further
% information.

% To change the sample interval e.g 5 us for 200 kS/s. The call to
% |ps4000RunStreaming()| will output the actual sampling interval used by the
% driver.
%set(streamingGroupObj, 'streamingInterval', 5e-6);

% For 10 MS/s, specify 100 ns
%set(streamingGroupObj, 'streamingInterval', 100e-9);

% Set the number of pre- and post-trigger samples
% If no trigger is set the library will still store the
% |numPreTriggerSamples| + |numPostTriggerSamples|.
set(ps4000DeviceObj, 'numPreTriggerSamples', 0);
set(ps4000DeviceObj, 'numPostTriggerSamples', 10000000); %Tiempo durante el que trabaja el streaming en us

% autoStop parameter can be set to false (0)
%set(streamingGroupObj, 'autoStop', PicoConstants.FALSE);

% Set other streaming parameters
downSampleRatio = 1;

% Defined buffers to store data collected from the channels. If capturing
% data without using the autoStop flag, or if using a trigger with the
% autoStop flag, allocate sufficient space (1.5 times the sum of the number of
% pre-trigger and post-trigger samples is shown below) to allow for
% additional pre-trigger data. Pre-allocating the array is more efficient
% than using <matlab:doc('vertcat') |vertcat|> to combine data.

maxSamples = get(ps4000DeviceObj, 'numPreTriggerSamples') + ...
get(ps4000DeviceObj, 'numPostTriggerSamples');

% Take into account the downSampleRatioMode - required if collecting data
% without a trigger and using the autoStop flag.
% finalBufferLength = round(1.5 * maxSamples / downSampleRatio);

pBufferChAFinal = libpointer('int16Ptr', zeros(maxSamples, 1, 'int16'));
pBufferChBFinal = libpointer('int16Ptr', zeros(maxSamples, 1, 'int16'));

% Prompt User to indicate if they wish to plot live streaming data.
plotLiveData = questionDialog('Plot live streaming data?', 'Streaming Data Plot');

if (plotLiveData == PicoConstants.TRUE)

disp('Live streaming data collection with second plot on completion.');

else

disp('Streaming data plot on completion.');

end

[status.runStreaming, actualSampleInterval, sampleIntervalTimeUnitsStr] = ...
invoke(streamingGroupObj, 'ps4000RunStreaming', downSampleRatio, overviewBufferSize);

disp('Streaming data...');
fprintf('Click the STOP button to stop capture or wait for auto stop if enabled.\n\n')

% Variables to be used when collecting the data:

hasAutoStopped = PicoConstants.FALSE;
newSamples = 0; % Number of new samples returned from the driver.
previousTotal = 0; % The previous total number of samples.
totalSamples = 0; % Total samples captured by the device.
startIndex = 0; % Start index of data in the buffer returned.
hasTriggered = 0; % To indicate if trigger has occurred.
triggeredAtIndex = 0; % The index in the overall buffer where the trigger occurred.

time = zeros(overviewBufferSize / downSampleRatio, 1); % Array to hold time values

status.getStreamingLatestValues = PicoStatus.PICO_OK; % OK

% Display a 'Stop' button.
[stopFig.h, stopFig.h] = stopButton();

flag = 1; % Use flag variable to indicate if stop button has been clicked (0)
setappdata(gcf, 'run', flag);

% Plot Properties - these are for displaying data as it is collected.

if (plotLiveData == PicoConstants.TRUE)

% Plot on a single figure
figure1 = figure('Name','PicoScope 4000 Series Example - Streaming Mode Capture', ...
'NumberTitle','off');

axes1 = axes('Parent', figure1);

% Estimate x-axis limit to try and avoid using too much CPU resources
% when drawing - use max voltage range selected if plotting multiple
% channels on the same graph.

xlim(axes1, [0 (actualSampleInterval * maxSamples)]);

yRange = max(channelARangeMv, channelBRangeMv);
ylim(axes1,[(-1 * yRange) yRange]);

hold(axes1,'on');
grid(axes1, 'on');

title(axes1, 'Live Streaming Data Capture');

if (strcmp(sampleIntervalTimeUnitsStr, 'us'))

xLabelStr = 'Time (\mus)';

else

xLabelStr = strcat('Time (', sampleIntervalTimeUnitsStr, ')');
xlabel(axes1, xLabelStr);

end

xlabel(axes1, xLabelStr);
ylabel(axes1, 'Voltage (mV)');

end

% Get data values as long as autoStop flag is not set (check for STOP button push inside loop)
while (hasAutoStopped == PicoConstants.FALSE && status.getStreamingLatestValues == PicoStatus.PICO_OK)

ready = PicoConstants.FALSE;

while (ready == PicoConstants.FALSE)

status.getStreamingLatestValues = invoke(streamingGroupObj, 'getStreamingLatestValues');

ready = invoke(streamingGroupObj, 'isReady');

% Give option to abort from here
flag = getappdata(gcf, 'run');
drawnow;

if (flag == 0)

disp('STOP button clicked - aborting data collection.')
break;

end

drawnow;

end

% Check for data
[newSamples, startIndex] = invoke(streamingGroupObj, 'availableData');

if (newSamples > 0)

% Check if the scope has triggered
[triggered, triggeredAt] = invoke(streamingGroupObj, 'isTriggerReady');

if (triggered == PicoConstants.TRUE)

% Adjust trigger position as MATLAB does not use zero-based
% indexing

bufferTriggerPosition = triggeredAt + 1;

fprintf('Triggered - index in buffer: %d\n', bufferTriggerPosition);

hasTriggered = triggered;

% Adjust by 1 due to driver using zero indexing
triggeredAtIndex = totalSamples + bufferTriggerPosition;

end

previousTotal = totalSamples;
totalSamples = totalSamples + newSamples;

% Printing to console can slow down acquisition - use for demonstration
fprintf('Collected %d samples, startIndex: %d total: %d.\n', newSamples, startIndex, totalSamples);

% Position indices of data in buffer
firstValuePosn = startIndex + 1;
lastValuePosn = startIndex + newSamples;

% Convert data values to millivolts from the application buffers
bufferChAmV = adc2mv(pAppBufferChA.Value(firstValuePosn:lastValuePosn), channelARangeMv, maxADCCount);
bufferChBmV = adc2mv(pAppBufferChB.Value(firstValuePosn:lastValuePosn), channelBRangeMv, maxADCCount);

% Process collected data further if required - this example plots
% the data if the User has selected 'Yes' at the prompt.

% Copy data into the final buffer(s)
pBufferChAFinal.Value(previousTotal + 1:totalSamples) = bufferChAmV;
pBufferChBFinal.Value(previousTotal + 1:totalSamples) = bufferChBmV;

if (plotLiveData == PicoConstants.TRUE)

% Time axis
% Multiply by ratio mode as samples get reduced.
time = (double(actualSampleInterval) * double(downSampleRatio)) * (previousTotal:(totalSamples - 1));

plot(time, bufferChAmV);

end

% Clear variables for use again
clear bufferChAMV;
clear firstValuePosn;
clear lastValuePosn;
clear startIndex;
clear triggered;
clear triggerAt;

end

% Check if auto stop has occurred
hasAutoStopped = invoke(streamingGroupObj, 'autoStopped');

if (hasAutoStopped == PicoConstants.TRUE)

disp('AutoStop: TRUE - exiting loop.');
break;

end

% Check if 'STOP' button pressed

flag = getappdata(gcf, 'run');
drawnow;

if (flag == 0)

disp('STOP button clicked - aborting data collection.')
break;

end

end

% Close the STOP button window
if (exist('stopFig', 'var'))

close('Stop Button');
clear stopFig;

end

if (plotLiveData == PicoConstants.TRUE)

drawnow;

% Take hold off the current figure.
hold(axes1, 'off');
movegui(figure1, 'west');

end

if (hasTriggered == PicoConstants.TRUE)

fprintf('Triggered at overall index: %d\n', triggeredAtIndex);

end

fprintf('\n');

%% Stop the Device
% This function should be called regardless of whether auto stop is enabled
% or not.

status.stop = invoke(ps4000DeviceObj, 'ps4000Stop');

%% Find the Number of Samples.
% This is the number of samples held in the driver itself. The actual
% number of samples collected when using a trigger is likely to be greater.

[status.noOfStreamingValues, numStreamingValues] = invoke(streamingGroupObj, 'ps4000NoOfStreamingValues');

fprintf('Number of samples available from the driver: %u.\n\n', numStreamingValues);

%% Process Data
% Process data post-capture if required - here the data will be plotted in
% a new figure.

% Reduce size of arrays if required
if (totalSamples < maxSamples)

pBufferChAFinal.Value(totalSamples + 1:end) = [];
pBufferChBFinal.Value(totalSamples + 1:end) = [];

end

% Retrieve data for the channels.
channelAFinal = pBufferChAFinal.Value();
channelBFinal = pBufferChBFinal.Value();

% Plot total data collected on another figure.
finalFigure = figure('Name','PicoScope 4000 Series Example - Streaming Mode Capture', ...
'NumberTitle','off');

finalFigureAxes = axes('Parent', finalFigure);
movegui(finalFigure, 'east');
hold(finalFigureAxes, 'on');

title(finalFigureAxes, 'Streaming Data Acquisition (Final)');

if (strcmp(sampleIntervalTimeUnitsStr, 'us'))

xlabel(finalFigureAxes, 'Time (\mus)');

else

xLabelStr = strcat('Time (', sampleIntervalTimeUnitsStr, ')');
xlabel(finalFigureAxes, xLabelStr);

end

ylabel(finalFigureAxes, 'Voltage (mV)');

% Find the maximum voltage range
maxYRange = max(channelARangeMv, channelBRangeMv);
ylim(finalFigureAxes,[(-1 * maxYRange) maxYRange]);

% Calculate values for time axis, then plot.
timeAxisValues = (double(actualSampleInterval) * double(downSampleRatio)) * (0:length(channelAFinal) - 1);
plot(finalFigureAxes, timeAxisValues, channelAFinal);

grid(finalFigureAxes, 'on');
legend(finalFigureAxes, 'Channel A', 'Channel B');
hold(finalFigureAxes, 'off');

%% Avisos de error
% Implementa la condición de error
errorValue = 5000; % Valor que activa la condición de error
errorTimeStart = 4000000; % Segundo inicial (us)
errorTimeEnd = 6000000; % Segundo final (us)

% Encuentra índices para los segundos 4 y 6
startIndexError = find(timeAxisValues >= errorTimeStart, 1);
endIndexError = find(timeAxisValues >= errorTimeEnd, 1);

% Verifica si el valor de error está presente entre los segundos 4 y 6
if any(channelAFinal(startIndexError:endIndexError) >= errorValue)
f = msgbox("Caution! 5V or more between 4th and 6th seconds","Error","error");
end

%Condición para detectar picos de voltaje no deseados
if ((max(channelAFinal)>10000)||(min(channelAFinal)<-10000)) %Condición: si en el eje y se pasan los limites
f = msgbox("Caution! 10V or more","Error","error"); %Salta comunicado de error
elseif any(channelAFinal(startIndexError:endIndexError) >= errorValue) %Si se da el error anterior no devolver nada

else
f = msgbox("The operation has been successfully completed","Success"); %si no se detecta pico todo correcto
end

%% Disconnect Device
% Disconnect device object from hardware.

disconnect(ps4000DeviceObj);
delete(ps4000DeviceObj);


Mi intento de trigger:

Código: 
%% PicoScope 4000 Series Instrument Driver Oscilloscope Streaming Data Capture Example
% This is an example of an instrument control session using a device
% object. The instrument control session comprises all the steps you are
% likely to take when communicating with your instrument.
%
% These steps are:
%
% # Create a device object
% # Connect to the instrument
% # Configure properties
% # Invoke functions
% # Disconnect from the instrument
%
% To run the instrument control session, type the name of the file,
% PS4000_ID_Streaming_Example, at the MATLAB command prompt.
%
% The file, PS4000_ID_STREAMING_EXAMPLE.M must be on your MATLAB PATH. For
% additional information on setting your MATLAB PATH, type 'help addpath'
% at the MATLAB command prompt.
%
% Example:
% PS4000_ID_Streaming_Example;
%
% Description:
% Demonstrates how to set properties and call functions in order
% to capture data in streaming mode from a PicoScope 4000 Series
% Oscilloscope.
%
% Note: Not all device and group object functions used in this example
% are compatible with the Test and Measurement Tool.
%
% See also: <matlab:doc('icdevice') |icdevice|> | <matlab:doc('instrument/invoke') |invoke|>
%
% Copyright: © 2015-2017 Pico Technology Ltd. See LICENSE file for terms.

%% Suggested Input Test Signals
% This example was published using the following test signals:
%
% * Channel A: 3 Vpp, 1 Hz sine wave
% * Channel B: 2 Vpp, 4 Hz square wave

%% Clear Command Window and Close any Figures

clc;
close all;

%% Load Configuration Information

PS4000Config;

%% Parameter Definitions
% Define any parameters that might be required throughout the script.

channelA = ps4000Enuminfo.enPS4000Channel.PS4000_CHANNEL_A;
channelB = ps4000Enuminfo.enPS4000Channel.PS4000_CHANNEL_B;

%% Device Connection

% Check if an Instrument session using the device object |ps4000DeviceObj|
% is still open, and if so, disconnect if the User chooses 'Yes' when prompted.
if (exist('ps4000DeviceObj', 'var') && ps4000DeviceObj.isvalid && strcmp(ps4000DeviceObj.status, 'open'))

openDevice = questionDialog(['Device object ps4000DeviceObj has an open connection. ' ...
'Do you wish to close the connection and continue?'], ...
'Device Object Connection Open');

if (openDevice == PicoConstants.TRUE)

% Close connection to device
disconnect(ps4000DeviceObj);
delete(ps4000DeviceObj);

else

% Exit script if User selects 'No'
return;

end

end

% Create device - specify serial number if required
% Specify serial number as 2nd argument if required.
ps4000DeviceObj = icdevice('picotech_ps4000_generic', '');

% Connect device
connect(ps4000DeviceObj);

%% Display Unit Information From Shared Library

[infoStatus, unitInfo] = invoke(ps4000DeviceObj, 'getUnitInfo');

disp(unitInfo);

%% Channel Setup
% All channels are enabled by default - switch off all except Channels A and B.

numChannels = get(ps4000DeviceObj, 'channelCount');

% Channel A
channelSettings(1).enabled = PicoConstants.TRUE;
channelSettings(1).coupling = 1;
channelSettings(1).range = ps4000Enuminfo.enPS4000Range.PS4000_20V; %limite de voltaje del canal

channelARangeMv = PicoConstants.SCOPE_INPUT_RANGES(channelSettings(1).range + 1);

% Channel B
channelSettings(2).enabled = PicoConstants.TRUE;
channelSettings(2).coupling = 1;
channelSettings(2).range = ps4000Enuminfo.enPS4000Range.PS4000_2V;

channelBRangeMv = PicoConstants.SCOPE_INPUT_RANGES(channelSettings(2).range + 1);

if (numChannels == PicoConstants.QUAD_SCOPE)

% Channel C
channelSettings(3).enabled = PicoConstants.FALSE;
channelSettings(3).coupling = 1;
channelSettings(3).range = ps4000Enuminfo.enPS4000Range.PS4000_2V;


% Channel D
channelSettings(4).enabled = PicoConstants.FALSE;
channelSettings(4).coupling = 1;
channelSettings(4).range = ps4000Enuminfo.enPS4000Range.PS4000_2V;

end

% Keep the status values returned from the driver.
for ch = 1:numChannels

status.setChannelStatus(ch) = invoke(ps4000DeviceObj, 'ps4000SetChannel', ...
(ch - 1), channelSettings(ch).enabled, ...
channelSettings(ch).coupling, channelSettings(ch).range);

end

% Obtain the maximum ADC Count from the driver
maxADCCount = double(get(ps4000DeviceObj, 'maxADCValue'));

%% Set Data Buffers
% Data buffers for channels A and B - buffers should be set with the driver,
% and these MUST be passed with application buffers to the wrapper driver
% in order to ensure data is correctly copied.

overviewBufferSize = 250000; % Size of the buffer to collect data from buffer.
segmentIndex = 0;
ratioMode = ps4000Enuminfo.enRatioMode.RATIO_MODE_NONE;

% Buffers to be passed to the driver
pDriverBufferChA = libpointer('int16Ptr', zeros(overviewBufferSize, 1));
pDriverBufferChB = libpointer('int16Ptr', zeros(overviewBufferSize, 1));

status.setDataBufferChA = invoke(ps4000DeviceObj, 'ps4000SetDataBufferWithMode', ...
channelA, pDriverBufferChA, overviewBufferSize, segmentIndex, ratioMode);

status.setDataBufferChB = invoke(ps4000DeviceObj, 'ps4000SetDataBufferWithMode', ...
channelB, pDriverBufferChB, overviewBufferSize, segmentIndex, ratioMode);

% Application Buffers - these are for copying from the driver into temporarily.
pAppBufferChA = libpointer('int16Ptr', zeros(overviewBufferSize, 1));
pAppBufferChB = libpointer('int16Ptr', zeros(overviewBufferSize, 1));

% Streaming properties and functions are located in the Instrument
% Driver's Streaming group.

streamingGroupObj = get(ps4000DeviceObj, 'Streaming');
streamingGroupObj = streamingGroupObj(1);

% Register application buffer and driver buffers (with the wrapper).

status.setAppAndDriverBuffersA = invoke(streamingGroupObj, 'setAppAndDriverBuffers', channelA, ...
pAppBufferChA, pDriverBufferChA, overviewBufferSize);

status.setAppAndDriverBuffersB = invoke(streamingGroupObj, 'setAppAndDriverBuffers', channelB, ...
pAppBufferChB, pDriverBufferChB, overviewBufferSize);

%% Trigger Setup
% Configurar el trigger para activarse con flancos de subida o bajada en el canal deseado.

% Especificar el canal para el trigger
triggerChannel = channelA;

% Definir el nivel del trigger en mV
triggerLevel_mv = 1000;

% Definir la dirección del trigger (0 para RISING_OR_FALLING)
triggerDirection = 0;

% Configurar las condiciones del trigger en el canal especificado
[status.setTrigger, state] = ps4000SetTriggerChannelConditions(ps4000DeviceObj, ...
triggerChannel, triggerLevel_mv, triggerDirection, ...
triggerChannel, 0, triggerChannel, 0, 0);

if status.setTrigger == PicoStatus.PICO_OK
disp('Trigger set successfully.');
else
disp('Error setting trigger.');
end

%% Start the Device with Trigger
% Iniciar el dispositivo para captura con trigger.

status.runBlock = ps4000RunBlock(ps4000DeviceObj, 0);

if status.runBlock == PicoStatus.PICO_OK
disp('Device started successfully with trigger.');
else
disp('Error starting device with trigger.');
end

%% Wait for Trigger
% Esperar hasta que se active el trigger.

timeout_ms = 10000; % Esperar hasta 10 segundos para el trigger.

[status.waitTrigger] = ps4000WaitReadyTrigger(ps4000DeviceObj, timeout_ms);

if status.waitTrigger == PicoStatus.PICO_OK
disp('Trigger occurred.');
else
disp('Timeout waiting for trigger.');
end


%% Start the Device with Trigger
% Iniciar el dispositivo para captura con trigger.

status.runBlock = ps4000RunBlock(ps4000DeviceObj, 0);

if status.runBlock == PicoStatus.PICO_OK
disp('Device started successfully with trigger.');
else
disp('Error starting device with trigger.');
end

%% Wait for Trigger
% Esperar hasta que se active el trigger.

timeout_ms = 10000; % Esperar hasta 10 segundos para el trigger.

[status.waitTrigger] = ps4000WaitReadyTrigger(ps4000DeviceObj, timeout_ms);

if status.waitTrigger == PicoStatus.PICO_OK
disp('Trigger occurred.');
else
disp('Timeout waiting for trigger.');
end


%% Start Streaming and Collect Data
% Use default value for streaming interval which is 1e-6 for 1 MS/s
% Collect data for 1 second with auto stop - maximum array size will depend
% on the PC's resources - type <matlab:doc('memory') |memory|> at the MATLAB command prompt for further
% information.

% To change the sample interval e.g 5 us for 200 kS/s. The call to
% |ps4000RunStreaming()| will output the actual sampling interval used by the
% driver.
%set(streamingGroupObj, 'streamingInterval', 5e-6);

% For 10 MS/s, specify 100 ns
%set(streamingGroupObj, 'streamingInterval', 100e-9);

% Set the number of pre- and post-trigger samples
% If no trigger is set the library will still store the
% |numPreTriggerSamples| + |numPostTriggerSamples|.
set(ps4000DeviceObj, 'numPreTriggerSamples', 0);
set(ps4000DeviceObj, 'numPostTriggerSamples', 10000000); %Tiempo durante el que trabaja el streaming en us

% autoStop parameter can be set to false (0)
%set(streamingGroupObj, 'autoStop', PicoConstants.FALSE);

% Set other streaming parameters
downSampleRatio = 1;

% Defined buffers to store data collected from the channels. If capturing
% data without using the autoStop flag, or if using a trigger with the
% autoStop flag, allocate sufficient space (1.5 times the sum of the number of
% pre-trigger and post-trigger samples is shown below) to allow for
% additional pre-trigger data. Pre-allocating the array is more efficient
% than using <matlab:doc('vertcat') |vertcat|> to combine data.

maxSamples = get(ps4000DeviceObj, 'numPreTriggerSamples') + ...
get(ps4000DeviceObj, 'numPostTriggerSamples');

% Take into account the downSampleRatioMode - required if collecting data
% without a trigger and using the autoStop flag.
% finalBufferLength = round(1.5 * maxSamples / downSampleRatio);

pBufferChAFinal = libpointer('int16Ptr', zeros(maxSamples, 1, 'int16'));
pBufferChBFinal = libpointer('int16Ptr', zeros(maxSamples, 1, 'int16'));

% Prompt User to indicate if they wish to plot live streaming data.
plotLiveData = questionDialog('Plot live streaming data?', 'Streaming Data Plot');

if (plotLiveData == PicoConstants.TRUE)

disp('Live streaming data collection with second plot on completion.');

else

disp('Streaming data plot on completion.');

end

[status.runStreaming, actualSampleInterval, sampleIntervalTimeUnitsStr] = ...
invoke(streamingGroupObj, 'ps4000RunStreaming', downSampleRatio, overviewBufferSize);

disp('Streaming data...');
fprintf('Click the STOP button to stop capture or wait for auto stop if enabled.\n\n')

% Variables to be used when collecting the data:

hasAutoStopped = PicoConstants.FALSE;
newSamples = 0; % Number of new samples returned from the driver.
previousTotal = 0; % The previous total number of samples.
totalSamples = 0; % Total samples captured by the device.
startIndex = 0; % Start index of data in the buffer returned.
hasTriggered = 0; % To indicate if trigger has occurred.
triggeredAtIndex = 0; % The index in the overall buffer where the trigger occurred.

time = zeros(overviewBufferSize / downSampleRatio, 1); % Array to hold time values

status.getStreamingLatestValues = PicoStatus.PICO_OK; % OK

% Display a 'Stop' button.
[stopFig.h, stopFig.h] = stopButton();

flag = 1; % Use flag variable to indicate if stop button has been clicked (0)
setappdata(gcf, 'run', flag);

% Plot Properties - these are for displaying data as it is collected.

if (plotLiveData == PicoConstants.TRUE)

% Plot on a single figure
figure1 = figure('Name','PicoScope 4000 Series Example - Streaming Mode Capture', ...
'NumberTitle','off');

axes1 = axes('Parent', figure1);

% Estimate x-axis limit to try and avoid using too much CPU resources
% when drawing - use max voltage range selected if plotting multiple
% channels on the same graph.

xlim(axes1, [0 (actualSampleInterval * maxSamples)]);

yRange = max(channelARangeMv, channelBRangeMv);
ylim(axes1,[(-1 * yRange) yRange]);

hold(axes1,'on');
grid(axes1, 'on');

title(axes1, 'Live Streaming Data Capture');

if (strcmp(sampleIntervalTimeUnitsStr, 'us'))

xLabelStr = 'Time (\mus)';

else

xLabelStr = strcat('Time (', sampleIntervalTimeUnitsStr, ')');
xlabel(axes1, xLabelStr);

end

xlabel(axes1, xLabelStr);
ylabel(axes1, 'Voltage (mV)');

end

% Get data values as long as autoStop flag is not set (check for STOP button push inside loop)
while (hasAutoStopped == PicoConstants.FALSE && status.getStreamingLatestValues == PicoStatus.PICO_OK)

ready = PicoConstants.FALSE;

while (ready == PicoConstants.FALSE)

status.getStreamingLatestValues = invoke(streamingGroupObj, 'getStreamingLatestValues');

ready = invoke(streamingGroupObj, 'isReady');

% Give option to abort from here
flag = getappdata(gcf, 'run');
drawnow;

if (flag == 0)

disp('STOP button clicked - aborting data collection.')
break;

end

drawnow;

end

% Check for data
[newSamples, startIndex] = invoke(streamingGroupObj, 'availableData');

if (newSamples > 0)

% Check if the scope has triggered
[triggered, triggeredAt] = invoke(streamingGroupObj, 'isTriggerReady');

if (triggered == PicoConstants.TRUE)

% Adjust trigger position as MATLAB does not use zero-based
% indexing

bufferTriggerPosition = triggeredAt + 1;

fprintf('Triggered - index in buffer: %d\n', bufferTriggerPosition);

hasTriggered = triggered;

% Adjust by 1 due to driver using zero indexing
triggeredAtIndex = totalSamples + bufferTriggerPosition;

end

previousTotal = totalSamples;
totalSamples = totalSamples + newSamples;

% Printing to console can slow down acquisition - use for demonstration
fprintf('Collected %d samples, startIndex: %d total: %d.\n', newSamples, startIndex, totalSamples);

% Position indices of data in buffer
firstValuePosn = startIndex + 1;
lastValuePosn = startIndex + newSamples;

% Convert data values to millivolts from the application buffers
bufferChAmV = adc2mv(pAppBufferChA.Value(firstValuePosn:lastValuePosn), channelARangeMv, maxADCCount);
bufferChBmV = adc2mv(pAppBufferChB.Value(firstValuePosn:lastValuePosn), channelBRangeMv, maxADCCount);

% Process collected data further if required - this example plots
% the data if the User has selected 'Yes' at the prompt.

% Copy data into the final buffer(s)
pBufferChAFinal.Value(previousTotal + 1:totalSamples) = bufferChAmV;
pBufferChBFinal.Value(previousTotal + 1:totalSamples) = bufferChBmV;

if (plotLiveData == PicoConstants.TRUE)

% Time axis
% Multiply by ratio mode as samples get reduced.
time = (double(actualSampleInterval) * double(downSampleRatio)) * (previousTotal:(totalSamples - 1));

plot(time, bufferChAmV);

end

% Clear variables for use again
clear bufferChAMV;
clear firstValuePosn;
clear lastValuePosn;
clear startIndex;
clear triggered;
clear triggerAt;

end

% Check if auto stop has occurred
hasAutoStopped = invoke(streamingGroupObj, 'autoStopped');

if (hasAutoStopped == PicoConstants.TRUE)

disp('AutoStop: TRUE - exiting loop.');
break;

end

% Check if 'STOP' button pressed

flag = getappdata(gcf, 'run');
drawnow;

if (flag == 0)

disp('STOP button clicked - aborting data collection.')
break;

end

end

% Close the STOP button window
if (exist('stopFig', 'var'))

close('Stop Button');
clear stopFig;

end

if (plotLiveData == PicoConstants.TRUE)

drawnow;

% Take hold off the current figure.
hold(axes1, 'off');
movegui(figure1, 'west');

end

if (hasTriggered == PicoConstants.TRUE)

fprintf('Triggered at overall index: %d\n', triggeredAtIndex);

end

fprintf('\n');

%% Stop the Device
% This function should be called regardless of whether auto stop is enabled
% or not.

status.stop = invoke(ps4000DeviceObj, 'ps4000Stop');

%% Find the Number of Samples.
% This is the number of samples held in the driver itself. The actual
% number of samples collected when using a trigger is likely to be greater.

[status.noOfStreamingValues, numStreamingValues] = invoke(streamingGroupObj, 'ps4000NoOfStreamingValues');

fprintf('Number of samples available from the driver: %u.\n\n', numStreamingValues);

%% Process Data
% Process data post-capture if required - here the data will be plotted in
% a new figure.

% Reduce size of arrays if required
if (totalSamples < maxSamples)

pBufferChAFinal.Value(totalSamples + 1:end) = [];
pBufferChBFinal.Value(totalSamples + 1:end) = [];

end

% Retrieve data for the channels.
channelAFinal = pBufferChAFinal.Value();
channelBFinal = pBufferChBFinal.Value();

% Plot total data collected on another figure.
finalFigure = figure('Name','PicoScope 4000 Series Example - Streaming Mode Capture', ...
'NumberTitle','off');

finalFigureAxes = axes('Parent', finalFigure);
movegui(finalFigure, 'east');
hold(finalFigureAxes, 'on');

title(finalFigureAxes, 'Streaming Data Acquisition (Final)');

if (strcmp(sampleIntervalTimeUnitsStr, 'us'))

xlabel(finalFigureAxes, 'Time (\mus)');

else

xLabelStr = strcat('Time (', sampleIntervalTimeUnitsStr, ')');
xlabel(finalFigureAxes, xLabelStr);

end

ylabel(finalFigureAxes, 'Voltage (mV)');

% Find the maximum voltage range
maxYRange = max(channelARangeMv, channelBRangeMv);
ylim(finalFigureAxes,[(-1 * maxYRange) maxYRange]);

% Calculate values for time axis, then plot.
timeAxisValues = (double(actualSampleInterval) * double(downSampleRatio)) * (0:length(channelAFinal) - 1);
plot(finalFigureAxes, timeAxisValues, channelAFinal);

grid(finalFigureAxes, 'on');
legend(finalFigureAxes, 'Channel A', 'Channel B');
hold(finalFigureAxes, 'off');

% Implementa la condición de error
errorValue = 5000; % Valor que activa la condición de error
errorTimeStart = 4000000; % Segundo inicial (us)
errorTimeEnd = 6000000; % Segundo final (us)

% Encuentra índices para los segundos 4 y 6
startIndexError = find(timeAxisValues >= errorTimeStart, 1);
endIndexError = find(timeAxisValues >= errorTimeEnd, 1);

% Verifica si el valor de error está presente entre los segundos 4 y 6
if any(channelAFinal(startIndexError:endIndexError) >= errorValue)
f = msgbox("Caution! 5V or more between 4th and 6th seconds","Error","error");
end

%Condición para detectar picos de voltaje no deseados
if ((max(channelAFinal)>10000)||(min(channelAFinal)<-10000)) %Condición: si en el eje y se pasan los limites
f = msgbox("Caution! 10V or more","Error","error"); %Salta comunicado de error
elseif any(channelAFinal(startIndexError:endIndexError) >= errorValue) %Si se da el error anterior no devolver nada

else
f = msgbox("The operation has been successfully completed","Success"); %si no se detecta pico todo correcto
end

%% Disconnect Device
% Disconnect device object from hardware.

disconnect(ps4000DeviceObj);
delete(ps4000DeviceObj);

Y por último el error:

Código: 
Incorrect number or types of inputs or outputs for function ps4000SetTriggerChannelConditions.

Error in PS4000_ID_Streaming_Example_Trigger (line 191)
[status.setTrigger, state] = ps4000SetTriggerChannelConditions(ps4000DeviceObj, ...

Gracias por tu propuesta y corrección, espero poder facilitar las cosas a la gente que quiera ayudarme, aún así, intentaré buscar más información sobre la función que me da el error. Gracias.
 
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