please dont rip this site

Piclist Jal Bipolib

-- 
-- Program: bipolar.jal library
--
-- Date: 14 July 2000
--
-- Author: G. Shearer
--         Vanderbilt University
--         Nashville, TN
--
-- Purpose: for driving both bipolar and unipolar stepper motors
-- uses Allegro UDN2998 dual H bridge

-- Copyright (C) 2000 G. Shearer
--
-- This library is free software; you can redistribute it and/or
-- modify it under the terms of the GNU Library General Public
-- License as published by the Free Software Foundation; either
-- version 2 of the License, or (at your option) any later version.
--
-- This library is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-- Library General Public License for more details.
--
-- You should have received a copy of the GNU Library General Public
-- License along with this library; if not, write to the
-- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-- Boston, MA  02111-1307, USA.
--


procedure stepout ( byte in seq, byte in speed ) is
-- sends seq nibble to output

if seq == 0 then
port_a = 0b_0001
elsif seq == 1 then
port_a = 0b_1001
elsif seq == 2 then
port_a = 0b_0101
elsif seq == 3 then
port_a = 0b_0110
elsif seq == 4 then
port_a = 0b_0100
elsif seq == 5 then
port_a = 0b_1000
elsif seq == 6 then
port_a = 0b_0000
elsif seq == 7 then
port_a = 0b_0010
else
port_a = 0b_1010
end if
delay_1ms( speed )
end procedure

procedure fullforward ( byte in speed ) is
-- makes one full step in the forward direction

stepout( 1, speed )
stepout( 7, speed )
stepout( 5, speed )
stepout( 3, speed )
end procedure


procedure fullreverse ( byte in speed ) is
-- makes one full step in the reverse direction

stepout( 3, speed )
stepout( 5, speed )
stepout( 7, speed )
stepout( 1, speed )
end procedure

procedure halfstep ( bit in direction, byte in out seq, byte in speed ) is
-- makes one half step in the proper direction and remembers which half step

for 4 loop
if direction == true & seq < 7 then
	seq = seq + 1
elsif direction == true & seq == 7 then
	seq = 0
elsif direction == false & seq > 0 then
	seq = seq - 1
elsif direction == false & seq == 0 then
	seq = 7
end if
stepout ( seq, speed )
end loop
end procedure

procedure fullstep ( bit in direction, byte in speed ) is
-- detects forward/reverse direction and calls proper fullstep procedure

if direction == true then fullforward ( speed )
else fullreverse ( speed )
end if
end procedure




file: /Techref/piclist/jal/bipolib.jal, 2KB, , updated: 2000/8/14 12:20, local time: 2018/12/10 08:41,
TOP NEW HELP FIND: 
52.91.90.122:LOG IN

 ©2018 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE! / 

<A HREF="http://techref.massmind.org/techref/piclist/jal/bipolib.jal"> piclist jal bipolib</A>

Did you find what you needed?

 

Welcome to massmind.org!

 

Welcome to techref.massmind.org!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .