Square wave generator

Library

Sources

Description

This block is a square wave generator: output takes values -M and M . Every time an event is received on the input event port, the output switches from -M to M , or M to -M .

Dialog Box

Set Square generator block parameters
Amplitude	1

• Amplitude: a scalar $M$ .

Default properties

• always active: no
• direct-feedthrough: no
• zero-crossing: no
• mode: no
• number/sizes of inputs: 0 /
• number/sizes of outputs: 1 / 1
• number/sizes of activation inputs: 1 / 1
• number/sizes of activation outputs: 0 /
• continuous-time state: no
• discrete-time state: yes
• name of computational function: gensqr

Interfacing function

scilab/macros/scicos_blocks/sources/GENSQR_f.sci

Computational function (type 0)

      subroutine gensqr(flag,nevprt,t,xd,x,nx,z,nz,tvec,ntvec,
     &     rpar,nrpar,ipar,nipar,u,nu,y,ny)
c     Copyright INRIA

c     Scicos block simulator
c     Square wave generator
c     period=2*rpar(1)
c
      double precision t,xd(*),x(*),z(*),tvec(*),rpar(*),u(*),y(*)
      integer flag,nevprt,nx,nz,ntvec,nrpar,ipar(*)
      integer nipar,nu,ny

c
      double precision atol,rtol,ttol,deltat
      common /costol/ atol,rtol,ttol,deltat
c
      if(flag.eq.2) then
         z(1)=-z(1)
      elseif(flag.eq.1.or.flag.eq.6) then
         y(1)=z(1)
      endif
      end