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
74 lines
2.7 KiB
C
74 lines
2.7 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
|
|
/**
|
|
* \defgroup compatibility Arduino - Contiki
|
|
*
|
|
* This defines contiki-compatible hardware definitions for running
|
|
* arduino sketches (or just to call arduino-compatible function).
|
|
* For now only for osd hardware, a similar file should exist for each
|
|
* arduino-compatible hardware.
|
|
*
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* Header file for arduino compatibility
|
|
* \author
|
|
* Ralf Schlatterbeck <rsc@runtux.com>
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* The OSD hardware only supports timer 3 for PWM, timer 2 is used by
|
|
* contiki for sleep/wakeup timing and is not usable for PWM.
|
|
*/
|
|
#define digitalPinToTimer(pin) \
|
|
( (pin) == 3 \
|
|
? TIMER3A \
|
|
: ( (pin) == 4 \
|
|
? TIMER3B \
|
|
: ((pin == 5) ? TIMER3C : NOT_ON_TIMER) \
|
|
) \
|
|
)
|
|
|
|
/* Only init timer 3 with phase correct pwm 8-bit and prescaler 64 */
|
|
#define arduino_pwm_timer_init() \
|
|
(hwtimer_ini (3, HWT_WGM_PWM_PHASE_8_BIT, HWT_CLOCK_PRESCALER_64, 0))
|
|
|
|
/*
|
|
* VI settings, see coding style
|
|
* ex:ts=8:et:sw=2
|
|
*/
|
|
|
|
/** @} */
|