embOS for PIC32 CPUs and Microchip compiler

embOS for PIC32 was developed for and with Microchips's compiler version 7.62.09 and supports all memory models offered by this compiler. It comes with easy to use start projects for Microchips's MPLAB workbench.

Resources and performance data

Memory usage
RAM usage per task control block	20 bytes
RAM usage per resource semaphore	16 bytes
RAM usage per counting semaphore	8 bytes
RAM usage per mailbox	24 bytes
RAM usage per software timer	20 bytes
RAM usage event	20 bytes
Min. stack-size per task (RAM)	156 bytes
Timing
Context switch time	4.86 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. 20 µs (50 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 values given above were measured with embOS release build on an PIC32 CPU running at 72MHz.

embOSView offers system analysis during runtime

embOSView with PIC32 target CPU

Available Emulators

Microchip Real Ice

Additional information

Release Notes embOS PIC32 for Microchip compiler