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Cortex-M, Cypress PSoC

embOS for Cortex M Cypress was developed for and with the Cypress PSoC development tool kit.
It can be used with the GNU compiler wich comes wit the development tools.
Alternatively, embOS Cortex M for KEIL MDK can also be used and run on the Cypress development board.
The user manual describes how to setup the sample workspace for usage with the GNU tools or KEIL MDK.
The trial version of embOS for Cypress Cortex M comes with libraries for the GNU compiler and additional libraries for the KEIL MDK.


Pricing Trial download Notification Subscribe to embOS software notification Release Notes


Resources and performance data

Memory usage
Kernel size (ROM) Approx. 1700 bytes
Kernel RAM usage 51 bytes
RAM usage per task control block 48 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 0 bytes
Min. stack-size per task (RAM) 72 bytes
Context switch time 8.0 µs
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)
Max. no. of tasks Unlimited (by available RAM only)
Max. no. of mailboxes Unlimited (by available RAM only)
Max. no. of semaphores Unlimited (by available RAM only)
Max. no. of software timers Unlimited (by available RAM only)
Max. no. of priorities Unlimited
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 a CPU running at 72MHz.

Board support packages

embOS comes with lots of ready to go start projects and support packages for various Cortex M CPUs and starterboards.

CPU Eval board
Cypress PSoC4 CY8CKIT-042 DevelopmentKit
Cypress PSoC5 CY8CKIT-001 DevelopmentKit