Trying to control digital pins on digilent waveforms

[Mohamad Idris]

I had posted this query earlier as well but to no use. I am trying to generate 4 signals at digital pins of ADP3450 using waveforms. Each signal has a frequency of 1khz/100hz with each signal having 1000 samples each. The fourth signal is much more straightforward and is on for the initial half-cycle and then off. 

In the first attempt, the "patterns" is used in BUS Mode with D0-D3 configured for generating these waveforms with a "Parameter1" frequency set using the formula frequency*numberof samples. However, this does not work as the frequency of one or two signals is incorrect on generation.     

To correct this I used a script but facing issues there as well. And I have pasted the code here 

// Check if the script is running in the WaveForms environment

if (typeof Patterns === 'undefined') {

throw "Please run this script in the WaveForms environment!";

}

 

// Define digital patterns

var amplitudes1 = [0, 5, 0, 5, 0, 5, 0, 5, 5, 0, 5, 0, 5, 0, 5, 0, 0, 5, 0, 5, 0, 5, 0, 5, 5, 0, 5, 0, 5, 0, 5, 0];

var amplitudes2 = [0, 0, 5, 5, 0, 0, 5, 5, 5, 5, 0, 0, 5, 5, 0, 0, 0, 0, 5, 5, 0, 0, 5, 5, 5, 5, 0, 0, 5, 5, 0, 0];

var amplitudes3 = [0, 0, 0, 0, 5, 5, 5, 5, 5, 5, 5, 5, 0, 0, 0, 0, 0, 0, 0, 0, 5, 5, 5, 5, 5, 5, 5, 5, 0, 0, 0, 0];

var durations_us = [300, 200, 200, 250, 250, 300, 450, 550, 550, 450, 300, 250, 250, 200, 200, 300, 300, 200, 200, 250, 250, 300, 450, 550, 550, 450, 300, 250, 250, 200, 200, 300];

 

// Initialize Pattern Generator

var Patterns = new Wavegen.WaveformManager();

Patterns.setup();

 

// Set up digital channels

Patterns.channels = [

{ enabled: true, mode: 'digital', values: amplitudes1 },

{ enabled: true, mode: 'digital', values: amplitudes2 },

{ enabled: true, mode: 'digital', values: amplitudes3 }

];

 

// Configure digital channels

Patterns.channels.forEach((channel, index) => {

if (channel.enabled) {

Patterns.setupChannel(index, channel.mode);

channel.values.forEach((value, i) => {

Patterns.add(index, value, durations_us[i] / 1e6); // Convert microseconds to seconds

});

Patterns.setSampleRate(1e6); // Set sample rate to 1 MHz

Patterns.configure(index);

}

});

 

// Start the Pattern Generator

Patterns.start();

 

// Wait for a certain amount of time (adjust as needed)

wait(10); // Run for 10 seconds

 

// Stop the Pattern Generator

Patterns.stop();

I am getting a parse error 

Any help would be highly appreciated

 

[attila]

Hi @Mohamad Idris

I don't know where did you find some of the functions used in you script, but these are not valid in WaveForms application.
See the Help tab for more information:

[Mohamad Idris]

Thanks for the reply @attila can you please guide how can we generate these waves using the "patterns" while keeping in view the issues I am facing? I have attached a snapshot of the generated waveforms of different frequencies for your reference.   

[attila]

Hi @Mohamad Idris

Easier would be using a Bus, Type: Custom, draw with mouse, copy&paste in the table on the right, use the Import.

[Mohamad Idris]

Hi @attila thanks for replying i have achieved it now anyways much thanks