Generating Square Wave in Matlab

Hi,

I intend to generate a square wave by Matlab simulation with this characteristic:

- 20 kHz, - amplitude between 0 and 1, - it is able to be shifted.

Then, I am going to convert the square wave to a DSP board. Therefore, I have to use discrete time blocks. Because the continues time blocks are not acceptable by compiler.

Please help me to find the appropriate algorithm.

Regards Foad

Answer 1

[Image Analyst]

How about using ones(), zeros(), and repmat()?

[Image Analyst]

By the way, did you click on the square wave tag and see all the other related discussions?

[Seyedfoad Taghizadeh]

Thanks for your reply,

I can not generate square wave by coding and I have to simulate it using blocks. Because Matlab codes can not be converted to DSP board. As I mentioned earlier, the blocks also must be discrete time based blocks. I have already used the "Discrete time PWM" block of Matlab. But it did not work. The compiler recognized this block as a continues time block. Do you have any suggestion in this regard?

Regards Foad

[Image Analyst]

I assume you mean Simulink. Sorry - I do not have Simulink. I didn't know Simulink was required because you didn't list that in the Products or Tags. I will put it there for you so other people will know. I thought you could put MATLAB code into blocks but since I don't have it, I'm not sure.

Answer 2

[Walter Roberson]

http://www.mathworks.com/help/simulink/slref/repeatingsequencestair.html