0

‘Data Watchpoint and Trace’ (DWT) Cycle Counting on ARM Cortex-M

Interesting bit of intel from Erich at MCU on Eclipse. In summary,

If your ARM Cortex-M has a DWT, you can use the cycle counter to measure the cycles spent executing code. That could be used for delay loops or to measure execution time.

Some ARM Cortex-M have a DWT (Data Watchpoint and Trace) unit implemented, and it has a nice feature in that unit which counts the execution cycles. The DWT is usually implemented on most Cortex-M3, M4 and M7 devices, including e.g. the NXP Kinetis or LPC devices.

Read more.


Join 4,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Learn “How Computers Work” with Bill Gates, Ladyada and more – From Code.org !

CircuitPython in 2018 – Python on Microcontrollers is here!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — The Public Radio’s inventory dashboard

Wearables — Glue for the occasion

Electronics — Ew! Sticky!

Biohacking — Using Insulin Load for Better Sleep and Recovery

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.