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Add Arduino compatibility layer

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We can now directly compile arduino sketches (.pde) files.
Arduino compatible analogWrite works now.
But there is still a long way to go, serial I/O and timer stuff (delay,
millis etc) currently don't work (not tested but I don't expect this to
work).
It can be used in an arduino sketch or in a normal contiki program.
We get a PWM frequency of 490.2 Hz (a period of 2.040 ms), that's
Arduino compatible. If you need different frequencies see native timer
usage in examples/osd/pwm-example
In a contiki program you have to call arduino_pwm_timer_init to
initialize the timer before pwm works. The arduino sketch wrapper
already does this.
For running a sketch, see examples/osd/arduino-sketch
This commit is contained in:
Ralf Schlatterbeck 2014-06-26 11:00:01 +02:00
parent b17934c491
commit b6be226e69
22 changed files with 999 additions and 361 deletions
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77
apps/arduino/arduino-process.c Normal file
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/*
* Copyright (c) 2014, Ralf Schlatterbeck Open Source Consulting
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \addgroup Arduino Process
*
* This wraps the Arduino-API entry points `loop` and `setup` in a
* contiki process.
*
* If the normal contiki includes are used and resources initialized in
* `setup`, Contiki resources can be used in an arduino sketch.
*
* @{
*/
/**
* \file
* Wrapper for Arduino sketches
* \author
* Ralf Schlatterbeck <rsc@runtux.com>
*
*/
#include "arduino-process.h"
PROCESS(arduino_sketch, "Arduino Sketch Wrapper");
PROCESS_THREAD(arduino_sketch, ev, data)
{
PROCESS_BEGIN();
arduino_init ();
setup ();
while (1) {
loop ();
/* Give other processes a chance to run */
process_post (&arduino_sketch, PROCESS_EVENT_CONTINUE, NULL);
PROCESS_WAIT_EVENT();
}
PROCESS_END();
}
/*
* VI settings, see coding style
* ex:ts=8:et:sw=2
*/
/** @} */