embOS for PIC24/PIC30 CPUs and Microchip compiler

embOS for Microchip PIC was developed for and with Microchips's compiler and supports all memory models offered by this compiler.
embOS for PIC24F/PIC24H and dsPIC30F/dsPIC33F comes with an easy to use start project for PIC24F/PIC24H and dsPIC30F/dsPIC33F CPUs which may be used with Microchips's MPLAB IDE. Software development with hardware debugger and simulator is supported.

Resources and performance data

Memory usage
Kernel size (ROM)	<2 KB
Kernel RAM usage	37 bytes
RAM usage per task control block	18 bytes
RAM usage per resource semaphore	8 bytes
RAM usage per counting semaphore	4 bytes
RAM usage per mailbox	12 bytes
RAM usage per software timer	10 bytes
RAM usage event	0 bytes
Min. stack-size per task (RAM)	24 bytes
Timing
Context switch time	22.1 µs, independent of number of tasks
Interrupt latency time	zero
Kernel CPU usage/TICK	less than .2% of total calculation time at 1000 Interrupts/second (1ms TICK)
Basic time unit (TICK)	typ. 1 ms, min. 10 µs (100 kHz interrupt frequency)
Features
Max. no. of tasks	Unlimited (by available RAM only)
Max. no. of mailboxes	unlimited (by available RAM only)
Max. no. of semaphores (resource/binary/counting)	unlimited (by available RAM only)
Max. no. of software timers	unlimited (by available RAM only)
Max. no. of priorities	255
Stack size idle task (RAM)	0(no memory needed)
Nested interrupts	permitted
Task switches from within ISR	possible

Absolute data given above were measured with embOS release build on a PIC24 CPU running at 8MHz in small memory model.

embOSView offers system analysis during runtime

Available Emulators

MICROCHIP

Additional information

Release Notes embOS PIC24/PIC30 for Microchip compiler

Copyright 2001-2007 SEGGER Microcontroller GmbH & Co.KG. All rights reserved.
For more information, please visit our web site www.segger.com or contact us at info@segger.com
Last update: December 7, 2007