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ISO 9001 certified

Cortex-M, Atollic

embOS for Cortex M was developed for and with Atollic TrueSTUDIO for ARM and supports all memory models offered by these compiler. It comes with easy to use make files. Initilization code for different Cortex M starter boards is included. Software development with with JTAG tools like J-Link is possible.


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Resources and performance data

Memory usage
Kernel size (ROM) Approx. 1700 bytes
Kernel RAM usage 71 bytes
RAM usage per task control block 32 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) 80 bytes
Context switch time 2.3 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 XRelease build on an STM32F407 CPU running at 168MHz.


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
Fujitsu MB9BF506 Fujitsu SK-FM3-100PMC
Infineon XMC4500 Infineon XMC4500 Hexagon Application Kit
NXP LPC1788 Embedded Artists LPC1788-32
NXP LPC4357 Keil MCB4357
ST STM32F407VG ST STM32F40G-Eval
Toshiba TMPM369 Toshiba BMSKTOPASM369