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osd-contiki/apps/arduino/README.md
Ralf Schlatterbeck b6be226e69 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
2014-11-19 13:48:05 +01:00

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Arduino Compatibility

This application contains hardware-independent implementations of arduino compatibilty libraries and include files to be used with contiki.

The whole arduino compatibility library is work in progress. Note that features having to do with timers like millis and delay are currently untested. In Arduino they use timer 0 of the AVR microcontroller. It should be investigated to use the hardware timer already in use by contiki (on the OSD-merkur platform this is currently timer 5).