osd-contiki/apps/arduino/README.md

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).
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 2014-06-26 11:00:01 +02:00			`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).`