Cortex M3, Cypress PSoC5

embOS for Cortex M3 Cypress was developed for and with the Cypress PSoC5 development tool kit.
It can be used with the GNU compiler wich comes wit the development tools.
Alternatively, embOS CM3 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 CortexM3 comes with libraries for the GNU compiler and additional libraries for the KEIL MDK.

Resources and performance data

Memory usage
Kernel size (ROM)	approx. 1700 bytes
Kernel RAM usage	51 bytes
RAM usage per task control block	36 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
Timing
Context switch time	8.0 usec
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 a CPU running at 72MHz.

embOSView offers system analysis during runtime

 

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Release notes embOS Version 3.82h1 for Cortex M3 Cypress

1. Tool chain used for build
2. New features
3. Improvements
4. Program corrections
5. Known problems/limitations
6. Release history
7. Miscellaneous

Tool chain used for build

The following tools have been used:

Compiler:    GCC version 4.2.1
Assembler:   GCC version 4.2.1
Librarian:   GCC version 4.2.1
Workbench:   Cypress PSoC Creator V4.1

New features

Version 3.82h1

1. Support for KEIL MDK added.
   embOS for Cypress CM3 now comes with a start project which offers the coice of using the generic GNU toolchain
   as well as the KEIL MDK tool chain.
   The trial version of embOS for Cypress CM3 contains libraries for both versions.

Version 3.82a

NONE
Initial version for PSoC5

Improvements

Version 3.82a

NONE
Initial version for PSoC5

Program corrections

Version 3.82a

NONE
Initial version for PSoC5

Known problems/limitations

Version 3.82a

NONE
Initial version for PSoC5

Release history

Version	Release date	Short explanation
V3.82h1	29. Jun 2010	First release. Support for KEIL toolchain added.
V3.82a	15. Feb 2010	Initial version for PSoC5

Miscellaneous

This document was first released with version 3.82a of the software.
Software released earlier is documented internally. This information is available at request.