nRF52832 Flash programming time via SWD

RE: nRF52832 Flash programming time via SWD

Amanda Hsieh — Thu, 23 Apr 2020 06:45:21 GMT

Hi,

[quote user="masamasa"]What is the maximum SWDCLK speed of the nRF53832 ?[/quote]

Max SWDCLK is 8MHz.

-Amanda H.

RE: nRF52832 Flash programming time via SWD

Nguyen Hoan Hoang — Sun, 19 Apr 2020 02:10:32 GMT

yeah, it takes about 30s.

RE: nRF52832 Flash programming time via SWD

Turbo J — Sat, 18 Apr 2020 07:52:01 GMT

You can write into RAM, then additionally write and use a small function in RAM as a copy-to-flash function. OpenOCD flashing works like this IIRC.

RE: nRF52832 Flash programming time via SWD

masamasa — Sat, 18 Apr 2020 05:26:16 GMT

Thank you for your answer.

What is the maximum SWDCLK speed of the nRF53832 ?

It seems it is impossible to write one word for 67.5us with 3MHz SWDCLK freq, cos write flash and read READY reg are needed.

Is it possible higher than 3MHz ? Or is it possible to write flash absolutely without reading READY reg ?

RE: nRF52832 Flash programming time via SWD

Amanda Hsieh — Thu, 16 Apr 2020 07:47:48 GMT

Hi,

To write the entire flash of an nRF52832 device is approximately 8.85 seconds: (512 * 1024) / 4 * (67.5 * 10^-6). Please see the detail in the nWP027 - nRF52832 Production Programming- Programming section.

-Amanda H.