charge_pump.comp

来自「CNC 的开放码,EMC2 V2.2.8版」· COMP 代码 · 共 32 行

//   This is a 'charge-pump' component for EMC2 HAL
//   Copyright 2006 Jeff Epler <[e-mail]>
//
//   This program is free software; you can redistribute it and/or modify
//   it under the terms of the GNU General Public License as published by
//   the Free Software Foundation; either version 2 of the License, or
//   (at your option) any later version.
//
//   This program 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 General Public License for more details.
//
//   You should have received a copy of the GNU General Public License
//   along with this program; if not, write to the Free Software
//   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

component charge_pump "Create a square-wave for the 'charge pump' input of some controller boards";
option singleton yes;
pin out bit out "Square wave if 'enable' is TRUE or unconnected, low if 'enable' is FALSE";
pin in bit enable = TRUE "If FALSE, forces 'out' to be low";
function _ nofp "Toggle the output bit (if enabled)";
license "GPL";
;;
FUNCTION(_) {
    if ( enable ) {
	out = !out;
    } else {
	out = 0;
    }
}