slow down the CPU clock

RE: slow down the CPU clock

awneil — Wed, 23 Jun 2021 16:47:27 GMT

Seems to continue here:

https://devzone.nordicsemi.com/f/nordic-q-a/76684/leading-trace-solution---nrf52840

RE: slow down the CPU clock

noy — Wed, 23 Jun 2021 14:23:20 GMT

HI,

our project is working in Ozone.

In Ozone there is an option to see the execution count of source lines and instructions. The counters are updated live from the trace stream, while the application is running

In some sequential sections of the code, the executions counters do not match . Below is an example:

Software Engineer of SEGGER told us the result are unreliable(overflow issue )due to design of the nRF52 target device in regards to the trace clock speed.

RE: slow down the CPU clock

Susheel Nuguru — Wed, 23 Jun 2021 13:50:22 GMT

Hi noy,

[quote user=""], I tried to use Jtrce for debugging but the results are unreliable due to design of the nRF52 target device in regards to the trace clock speed. The only way around this is to slow down the CPU clock[/quote]

Can you explain a bit more at the exact specification due to which you see unreliable results caused by to the JTrace debugging? I am not sure if we allow dynamic control of clock speed as these are done internally . Before I go to the architects on this, I need to understand exactly in detail what is it that you are trying to solve.