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pyduino/example.py at master · firmata/pyduino · GitHub
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example.py
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#! /usr/bin/env python
"""pyduino - A python library to interface with the firmata arduino firmware.
Copyright (C) 2007 Joe Turner <orphansandoligarchs@gmail.com>
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
"""
import
pyduino
import
sys
import
time
def
usage
():
print
"""Usage: ./example.py port mode pin
Available modes: 1 - Digital input
2 - Digital output
3 - PWM
4 - Analog input"""
if
__name__
==
"__main__"
:
try
:
arduino
=
pyduino
.
Arduino
(
sys
.
argv
[
1
])
mode
=
int
(
sys
.
argv
[
2
])
pin
=
int
(
sys
.
argv
[
3
])
except
IndexError
,
ValueError
:
usage
()
sys
.
exit
()
if
mode
==
1
:
#Digital input
arduino
.
digital
[
pin
].
set_active
(
1
)
arduino
.
digital
[
pin
].
set_mode
(
pyduino
.
DIGITAL_INPUT
)
if
mode
==
2
:
#Digital output
arduino
.
digital
[
pin
].
set_active
(
1
)
arduino
.
digital
[
pin
].
set_mode
(
pyduino
.
DIGITAL_OUTPUT
)
arduino
.
digital
[
pin
].
write
(
1
)
#Turn output high
if
mode
==
3
:
#Digital PWM
arduino
.
digital
[
pin
].
set_active
(
1
)
arduino
.
digital
[
pin
].
set_mode
(
pyduino
.
DIGITAL_PWM
)
if
mode
==
4
:
#Analog in
arduino
.
analog
[
pin
].
set_active
(
1
)
last_value
=
0
#Mainloop
while
1
:
try
:
arduino
.
iterate
()
if
mode
==
1
:
#Digital input
value
=
arduino
.
digital
[
pin
].
read
()
if
value
!=
last_value
:
last_value
=
value
if
value
==
1
:
print
"Digital pin is high"
else
:
print
"Digital pin is low"
if
mode
==
2
:
#Digital output
#Alter the value every second
value
=
int
(
time
.
time
()
%
2
)
arduino
.
digital
[
pin
].
write
(
value
)
if
mode
==
3
:
#Digital PWM
#Alter the value every second
value
=
int
(
time
.
time
()
%
32
)
*
8
arduino
.
digital
[
pin
].
write
(
value
)
if
mode
==
4
:
#Analog in
value
=
arduino
.
analog
[
pin
].
read
()
if
value
!=
last_value
:
last_value
=
value
print
"Analog pin value is %i"
%
value
except
KeyboardInterrupt
:
arduino
.
exit
()
break
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