Add Arduino compatibility layer
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
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Ralf Schlatterbeck
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87903b2e89
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e65dabb119
22 changed files with 999 additions and 361 deletions
2
apps/arduino/Makefile.arduino
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apps/arduino/Makefile.arduino
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arduino_src = arduino-process.c
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4
apps/arduino/Makefile.include
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4
apps/arduino/Makefile.include
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%.cpp: %.pde
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echo '#include "Arduino.h"' > $@
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echo '#include "$<"' >> $@
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13
apps/arduino/README.md
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apps/arduino/README.md
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Arduino Compatibility
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=====================
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This application contains hardware-independent implementations of
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arduino compatibilty libraries and include files to be used with
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contiki.
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The whole arduino compatibility library is work in progress. Note that
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features having to do with timers like `millis` and `delay` are
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currently untested. In Arduino they use timer 0 of the AVR
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microcontroller. It should be investigated to use the hardware timer
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already in use by contiki (on the OSD-merkur platform this is currently
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timer 5).
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77
apps/arduino/arduino-process.c
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apps/arduino/arduino-process.c
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/*
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* Copyright (c) 2014, Ralf Schlatterbeck Open Source Consulting
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*/
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/**
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* \addgroup Arduino Process
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*
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* This wraps the Arduino-API entry points `loop` and `setup` in a
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* contiki process.
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*
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* If the normal contiki includes are used and resources initialized in
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* `setup`, Contiki resources can be used in an arduino sketch.
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*
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* @{
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*/
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/**
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* \file
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* Wrapper for Arduino sketches
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* \author
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* Ralf Schlatterbeck <rsc@runtux.com>
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*
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*/
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#include "arduino-process.h"
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PROCESS(arduino_sketch, "Arduino Sketch Wrapper");
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PROCESS_THREAD(arduino_sketch, ev, data)
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{
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PROCESS_BEGIN();
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arduino_init ();
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setup ();
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while (1) {
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loop ();
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/* Give other processes a chance to run */
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process_post (&arduino_sketch, PROCESS_EVENT_CONTINUE, NULL);
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PROCESS_WAIT_EVENT();
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}
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PROCESS_END();
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}
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/*
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* VI settings, see coding style
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* ex:ts=8:et:sw=2
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*/
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/** @} */
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65
apps/arduino/arduino-process.h
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65
apps/arduino/arduino-process.h
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/*
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* Copyright (c) 2014, Ralf Schlatterbeck Open Source Consulting
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*/
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/**
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* \devgroup Arduino Process
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*
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* This wraps the Arduino-API entry points `loop` and `setup` in a
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* contiki process.
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*
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* If the normal contiki includes are used and resources initialized in
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* `setup`, Contiki resources can be used in an arduino sketch.
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*
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* @{
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*/
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/**
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* \file
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* Wrapper for Arduino sketches
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* \author
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* Ralf Schlatterbeck <rsc@runtux.com>
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*
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*/
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#include "contiki.h"
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extern void loop (void);
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extern void setup (void);
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extern void arduino_init (void);
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extern struct process arduino_sketch;
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/*
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* VI settings, see coding style
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* ex:ts=8:et:sw=2
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*/
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/** @} */
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