HotPaw Basic for iPhone/iPad/iOS

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  • HotPaw Basic in Apple's iTunes App Store
  • HotPaw Basic for iOS on the Hotpaw website

  • The built-in Help File for HotPaw Basic for iOS 

    HotPaw Basic is a Classic BASIC language
interpreter.  Line numbers are required to
enter and edit programs.  
You type in Basic language programs with line
numbers and then type "run" (without quotes)
to run your program.

Example:

  10 for i = 1 to 2
  20 print "Hello World!"
  30 next i
  40 end
  run

Supported Commands and Statement Keywords:
  run new  list edit  save load removefile
  let  if then else endif   dim data read restore
  for to step next  while wend  goto gosub return
  ?  print  input  open close  end stop 
  def fn  mat  randomize  cls  : rem

Functions:
  int() abs() sgn()  rnd()
  sqr() exp() log() log10() sin() cos() tan() atn() 
  len() val() asc() str$() chr$() hex$() mid$() 
  ucase$() lcase$() right$() left$() field$() instr()
  eval() varptr() peek()  timer() date$ time$ pi

Operators:
  +  -  *  /  mod  ^
  =   <>  >  >=  <  <=   and  or  xor  not

Other special functions and commands:
  edit { line_number }
  dir
  removefile { filename$ }
  fn emailfile(address$, subject$, filename$)
  fn web(url$)
  fn fontsize(x)	:' changes console font size

Graphics:
  moveto x,y
  lineto x,y  	:' draws a line to x,y
  fn color(r,g,b)
  fn linewidth(w)
  cls  		:' clears display
  fn plot1()	:' see chipmunk basic documentation
  fn touch(1)	:' x location in graphics display
  fn touch(2)	:' y location in graphics display
  graphics cls  :' clears graphics display
  cls		:' clears both text and graphics

Sound:
  fn vibrate()
  sound f,d,v    :' f=frequency, d=duration_seconds, v=volume(0..100)
  morse "cq cq"  :' produces morsecode sounds

On iOS AirPrint enabled devices, you can print by using:
  open "lpt1:" for output as #1
  close #1 : rem print starts after file close
    
Hints, Notes and Limitations:

  String variable names must end with a
  $ character.
  Arrays must be dimensioned before use.
  Function subroutines with return values are 
  not supported.
  Input is line input.  Only one variable
  is allowed per input statement.

New commands (version 1.5.5):

    edit .

    :' Allows multi-line program editing.

    graphics circle r

    :' Draws circle at previous moveto location

New functions:

  dim a(8) :' create an array for GPS data
  fn location(1,a(0))
    :' Reads location in array a ( time, lat, long, alt, err )
    :' Returns time stamp (it's old data if unchanged)

  fn location(0)
    :' Stops GPS polling

  dim a(8) :' create an array for motion data
  fn accelerometer(1,a(0))
    :' Reads accelerometer into array a (time, x, y , z)
    :' Returns time stamp (it's old data if unchanged)

  fn accelerometer(0)
    :' Stops Accelerometer polling

  dim b%(65536) :' required array size
  fn recordaudio(64,b%(0))
    :' Continues filling array b% with audio samples.
    :' Returns index of latest sample

  fn recordaudio(0)
    :' Stops audio recording
  • Chipmunk Basic Language Manual - Those commands, statements, functions and operators which are supported by HotPaw Basic for iOS are identical to those of Chipmunk Basic.

Chipmunk Basic

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