How could we improve flashing time?

RE: How could we improve flashing time?

Einar Thorsrud — Wed, 20 Aug 2025 14:12:20 GMT

Hi,

Yes, I did not spot that there was a secotor erase there. On the nRF, chiperase and recover is much faster than sectore erase.

Do you actually write to the QSPI flash when you program the application or not? If you do not, the QSPI frequency will not matter.

RE: How could we improve flashing time?

ppalant — Wed, 20 Aug 2025 13:48:12 GMT

Hi, thank you for your input.
I set QSPI speed to 32M, but it makes no difference to total flashing time.

However, we noticed that we can gain 20 seconds on CP_APPLICATION programming if we use --chiperase instead of --sectoreerase.

RE: How could we improve flashing time?

Einar Thorsrud — Wed, 20 Aug 2025 11:54:25 GMT

Hi,

I see that the two steps that take the most time is step 3 where you erase the external flash, and step 5, where I assume most of the time is spent programming the external flash. I see on line 71 in the config file that you have set the QSPI speed to 2M. Can you try increasing this?