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Bazza
LXF regular
Joined: Sat Mar 21, 2009 11:16 am
Posts: 1381
Location: Loughborough
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 Posted: Tue Nov 17, 2009 6:02 pm Post subject: Is anyone interested... |
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Hi all...
Well Arduino is now talking to STANDARD Python how I like it...
It requires NO drivers, NO dependencies, NO added stuff at
all and works from a live version of PCLinuxOS 2009 too.
It is also talking to the default terminal window.
Is anyone interested in the code on how it is done?
If there is a "YES" then I will post it on here FOC...
Also `stty` is a tricky little sod to understand.
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1slipperyfish
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Joined: Mon May 09, 2005 3:52 pm
Posts: 2366
Location: wigan
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| Posted: Wed Nov 25, 2009 8:58 pm Post subject: |
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yes i am interested, can you give the code so it works with vista?? also can you give the code so you can program using java in vista??
thanks bazza 
paul
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Bazza
LXF regular
Joined: Sat Mar 21, 2009 11:16 am
Posts: 1381
Location: Loughborough
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| Posted: Wed Nov 25, 2009 10:01 pm Post subject: |
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Hi 1sf (troll)...
> yes i am interested, can you give the code so it works with vista??
http://main.aminet.net/dev/src/Arduino_Python.lha
And my question was for Linux NOT Windows...
Did you want the Linux method too?
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1slipperyfish
Forum Jester
Joined: Mon May 09, 2005 3:52 pm
Posts: 2366
Location: wigan
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| Posted: Thu Nov 26, 2009 7:05 pm Post subject: |
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yo bazza
if you wouldn't mind, i'm a 'driva user if that makes any difference  i'm also running fedora beta, but i'd rather use the 'driva
paul
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Bazza
LXF regular
Joined: Sat Mar 21, 2009 11:16 am
Posts: 1381
Location: Loughborough
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| Posted: Thu Nov 26, 2009 10:32 pm Post subject: |
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Hi 1sf (troll)...
Here goes...
> if you wouldn't mind, i'm a 'driva user if that makes any
> difference :S
Not really, it has been tested on Knoppix 5.1.1 too...
This is gonna be long so be prepared...
A simple manual test into the Console...
<Shell Code>
1) Boot up to your Linux flavour as root.
2) Temporarily disable any net access or use a stand-alone
machine.
3) Plug in your Arduino.
4) Open up a Console.
5) cd / <RETURN/ENTER>
6) cd /dev <RETURN/ENTER>
7) ls <RETURN/ENTER>
8) Check the you have a device as ttyUSB?
Note ? will probably be 0.
9) If ttyUSB0 exists then carry on; otherwise ignore this post.
10) Place a wire link between ANALOG 0 and the 3.3 V terminals.
11) chmod 666 /dev/ttyUSB0 <RETURN/ENTER>
Note, that chmod is not really needed but added for fullness!
12) stty -F /dev/ttyUSB0 1200 <RETURN/ENTER>
13) stty -F /dev/ttyUSB0 raw <RETURN/ENTER>
14) cat < /dev/ttyUSB0 <RETURN/ENTER>
Note, the characters will be from about 170 to 172 decimal
allowing for bit error of the Arduino ADC.
15) Remove and replace the wire link from ANALOG 0 and GND
or ANALOG 0 and 5 V too.
16) Ctrl-C to stop the characters being printed to the Console.
</Shell Code>
| Code: | # Arduino test for Python 2.5.x under PCLinuxOS.
# This is an experimental idea only to test the Arduino Diecimila
# development board under Python 2.5.x and Linux.
# This idea is copyright, (C)2009, B.Walker, G0LCU.
# Copy this `Arduino.py` file into the `Lib` drawer
# and you will be ready to roll... ;-)
# This code offered as Public Domain for all...
# Press ~Ctrl C~ to STOP the program.
# Set ANALOG 0 to 5V to fully QUIT the program.
# To run type:-
# >>> import Arduino<RETURN/ENTER>
# Do any imports as required.
# import sys
import os
# Assume root access!
os.system("chmod 666 /dev/ttyUSB0")
# Clear the screen...
os.system("clear")
# Fix the speed of the USB-Serial port to 1200 bps...
os.system("stty -F /dev/ttyUSB0 1200")
# Set it to `raw` transfer mode.
os.system("stty -F /dev/ttyUSB0 raw")
# The program proper.
def main():
print
print ' Arduino Diecimila Dev Board access demonsration Python 2.5.x code.'
print ' Original idea copyright, (C)2008, B.Walker, G0LCU.'
print ' Press ~Ctrl C~ to QUIT.'
print
while 1:
# Open up a channel for USB/Serial reading on the Arduino board.
# Place a wire link between ANALOG IN 0 and Gnd.
# Replace the wire link between ANALOG IN 0 and 3V3.
# Replace the wire link between ANALOG IN 0 and 5V.
# Watch the values change.
pointer = open('/dev/ttyUSB0', 'rb', 2)
# Transfer an 8 bit number into `mybyte`.
mybyte = str(pointer.read(1))
# Immediately close the channel.
pointer.close()
# Print the decimal value on screen.
print 'Decimal value at Arduino ADC Port0 is:-',ord(mybyte),'. '
# Ensure one safe getout when running!
if mybyte == 255: break
main()
# End of program...
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Bazza, G0LCU...
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Bazza
LXF regular
Joined: Sat Mar 21, 2009 11:16 am
Posts: 1381
Location: Loughborough
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| Posted: Thu Nov 26, 2009 10:41 pm Post subject: |
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Hi `sf...
You will need the programming SW from:-
http://arduino.cc/
I don`t use Linux to program, I use Windows instead, as I use
Arduino with WinUAE...
I forgot the .pde code for Arduino...
| Code: | /* Using the Arduino as a DEMO single channel ADC for Windows XP and Linux. */
/* This idea is copyright, (C)2008, B.Walker, G0LCU. */
/* This is just demonstration code only for use with Python 2.6.x or less. */
/* Set up a variable for basic analogue input. */
int analogue0 = 0;
void setup() {
/* open the serial port at 1200 bps. This rate is used for purely */
/* for simplicity only. */
Serial.begin(1200);
/* Set the analogue voltage reference, DEFAULT is 5V in this case. */
analogReference(DEFAULT);
}
void loop() {
/* Read the 10 bit analogue voltage on analogue input 0. */
analogue0 = analogRead(0);
/* Convert to a byte value by dividing by 4. */
analogue0 = analogue0/4;
/* Send to the Serial Port the byte value. */
Serial.print(analogue0, BYTE);
/* Delay 500 milliseconds before taking the next reading. */
delay(500);
}
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There that should be enough for you to start doing some I/O
projects with Arduino...
For example, Vlotmeters, Ammeters. Powermeters both AF
and RF, Data Loggers/Transient recorders and... and...
Enjoy...
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Bazza, G0LCU...
Team AMIGA... |
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1slipperyfish
Forum Jester
Joined: Mon May 09, 2005 3:52 pm
Posts: 2366
Location: wigan
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| Posted: Fri Nov 27, 2009 10:35 am Post subject: |
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you're the best bazza
paul
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