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Daniel: /* Test Environments */

2009-03-10T17:37:27Z

‎Test Environments

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== Test Environments ==

{| class="smalldiv"
| style="background-color:#F6F9ED" | Hardware Comments
| style="background-color:#F6F9ED" |
| style="background-color:#F6F9ED" | '''Nut/OS 4.6.3'''
| style="background-color:#F6F9ED" | '''Nut/OS 4.6.4'''
| style="background-color:#F6F9ED" | '''Nut/OS 4.7.4'''
| style="background-color:#F6F9ED" | '''Nut/OS 4.8.0'''
|-
| Ethernut 1.3 H
| Additional LED + Resistor required.
| OK
| OK [http://ethernut.de/arc/WIKI_BINARIES_ZIPPED/blinking-led-enut13H-nutos-4.6.4.zip '''Binaries''']
| OK [http://ethernut.de/arc/WIKI_BINARIES_ZIPPED/blinking-led-enut13H-nutos-4.7.4.zip '''Binaries''']
| OK [http://ethernut.de/arc/WIKI_BINARIES_ZIPPED/blinking-led-enut13H-nutos-4.8.0.zip '''Binaries''']
|-
| Ethernut 2.1 B
| Additional LED + Resistor required.
| OK
| OK [http://ethernut.de/arc/WIKI_BINARIES_ZIPPED/blinking-led-enut21B-nutos-4.6.4.zip '''Binaries''']
| OK [http://ethernut.de/arc/WIKI_BINARIES_ZIPPED/blinking-led-enut21B-nutos-4.7.4.zip '''Binaries''']
| OK [http://ethernut.de/arc/WIKI_BINARIES_ZIPPED/blinking-led-enut21B-nutos-4.8.0.zip '''Binaries''']
|-
| Ethernut 3.0 E
|
| OK
| OK [http://ethernut.de/arc/WIKI_BINARIES_ZIPPED/blinking-led-enut30E-nutos-4.6.4.zip '''Binaries''']
| OK [http://ethernut.de/arc/WIKI_BINARIES_ZIPPED/blinking-led-enut30E-nutos-4.7.4.zip '''Binaries''']
| OK [http://ethernut.de/arc/WIKI_BINARIES_ZIPPED/blinking-led-enut30E-nutos-4.8.0.zip '''Binaries''']
|-
| EIR 1.0
| Additional LED + Resistor required.
| OK
| OK [http://ethernut.de/arc/WIKI_BINARIES_ZIPPED/blinking-led-EIR1C-nutos-4.6.4.zip '''Binaries''']
| OK [http://ethernut.de/arc/WIKI_BINARIES_ZIPPED/blinking-led-EIR1C-nutos-4.7.4.zip '''Binaries''']
| OK [http://ethernut.de/arc/WIKI_BINARIES_ZIPPED/blinking-led-EIR1C-nutos-4.8.0.zip '''Binaries''']
|-
| id="compilertd" colspan="5" |'''Compiler:''' ARM-GCC 4.2.2 ; AVR-GCC 4.3.0
|}

== Description ==

Due to technical differences, each board requires a different program to make the LED blink. This document provides individual examples for each of them. 
Note that only Ethernut 3 has an on-board User LED. For the other boards you need an extra LED + series resistor. 
When using a standard LED the resistor may have a value of 200 Ohm to 1 kOhm. Note, that LEDs do have a polarity and typically one of the two leads is longer than the other one. The longer lead is the anode and will be connected to the resistor.
<center>[[Image:ledsch.png]]</center>

== Ethernut 1.3 / Ethernut 2.1 ==

===Description===

On these boards, we use pin 2 of PORT E which is reffered to as Pin 41 in the hardware manuals as our digital output pin and pin 3 as +5V Power Supply. Connect the resistor to pin 3 and the LEDs cathode to pin 41.

=== Source Code ===

<source lang="c">
#include <sys/timer.h>

int main(void)
{
sbi(DDRE, 2);
for(;;){
cbi(PORTE, 2);
NutSleep(500);
sbi(PORTE, 2);
NutSleep(500);
}
return 0;
}
</source>

=== Output ===

Blinking LED

=== Details ===

<source lang="c">
#include <sys/timer.h>
</source>
provides a library, required by <code>NutSleep()</code>.

<source lang="c">
sbi(DDRE, 2);
</source>

sets bit 2 of the Data direction register E high, which makes the Pin work as an output.

Within the endless loop, 
<source lang="c">
cbi(PORTE, 2);
</source>
drives bit (pin) 2 of Port E low, which makes the LED lit.
<source lang="c">
NutSleep(500);
</source>
After a <code>NutSleep()</code> (delay) of 500ms,
<source lang="c">
sbi(PORTE, 2);
</source>
drives Pin 2 of Port E high again, swiching the LED off. 
After another <code>NutSleep()</code> of 500ms the loop continues cycling.

== Ethernut 3 ==

===Description===

Ethernut 3 provides an on-board User LED (green LED integrated in the reset button.)

=== Source Code ===

<source lang="c">
#include <dev/npl.h>
#include <dev/npluled.h>
#include <sys/timer.h>

int main(void)
{
for(;;){
NplUledCntl(ULED_ON);
NutSleep(500);
NplUledCntl(ULED_OFF);
NutSleep(500);
}
return 0;
}
</source>

=== Output ===

Blinking LED

=== Details ===

<source lang="c">
#include <dev/npl.h>
#include <dev/npluled.h>
#include <sys/timer.h>
</source>
provide prototypes, of functions used later.

Within the endless loop,

<source lang="c">
NplUledCntl(ULED_ON);
</source>

switches the LED ON.

<source lang="c">
NutSleep(500);
</source>

After a <code>NutSleep()</code> (delay) of 500ms,

<source lang="c">
NplUledCntl(ULED_OFF);
</source>

switches the LED OFF again. 
After another <code>NutSleep()</code> of 500ms the loop continues cycling.

== Elektor Internet Radio 1.0 ==

===Description===

On the EIR we use pin 1 of port A (pin 2 of header K1) as digital output and pin 34 of header K1 as +3,3V power supply. Connect the resistor to pin 34 of header K1, the LEDs cathode to pin 2 of header K1.

=== Source Code ===

<source lang="c">
#include <sys/timer.h>

int main(void)
{
outr(PIOA_PER, 2);
outr(PIOA_OER, 2);

for (;;){
outr(PIOA_CODR, 2);
NutSleep(500);
outr(PIOA_SODR, 2);
NutSleep(500);
}
return 0;
}
</source>

=== Output ===

Blinking LED

=== Details ===

<source lang="c">
#include <sys/timer.h>
</source>
provides a header file, required by <code>NutSleep()</code>.
Within the <code>main()</code> function,

<source lang="c">
outr(PIOA_PER, 2);
</source>

enables PIO (Parallel Input Output Controller) at port A bit 1. This disables any peripheral function on this port bit.

<source lang="c">
outr(PIOA_OER, 2);
</source>

configures port A bit 1 as an output.

Within the endless loop,

<source lang="c">
outr(PIOA_CODR, 2);
</source>

drives bit (pin) 1 of port A low, which makes the LED lit.

<source lang="c">
NutSleep(500);
</source>

After a <code>NutSleep()</code> (delay) of 500ms,

<source lang="c">
outr(PIOA_SODR, 2);
</source>

drives Pin 1 of Port A high again, swiching the LED off.

After another <code>NutSleep()</code> of 500ms the loop continues cycling. 
(To better understand this commands, have a look at chapter 34 of Atmels documentation on the AT91SAM7SE512.)

== See also ==
* More [[Nut/OS Examples]]

[[Category:Code Snippets]]

{{Languages}}

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