1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Copyright 2013 Alexandre Terrasa <alexandre@moz-code.org>
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
18 if args
.is_empty
or args
.length
> 2 then
20 print
"\tshift <register> <state>"
29 # register layout and pin numbering
34 var sr
= new SR595(nb_pins
, ser_pin
, rclk_pin
, srclk_pin
)
36 # set all registers to 0
37 if args
.first
== "clear" then
39 # set all registers to 1
40 else if args
.first
== "all" then
41 var regs
= new Array[Bool].filled_with
(true, nb_pins
)
44 # set specified register to specified value
46 if args
[1].to_i
== 0 then
47 sr
.write
(args
.first
.to_i
, false)
49 sr
.write
(args
.first
.to_i
, true)