[nRF51422] Flash write and background scanning

RE: [nRF51422] Flash write and background scanning

Susheel Nuguru — Tue, 05 May 2015 06:16:13 GMT

Unfortunately I am not able to find any examples for SDK 6.1. There are a lot of examples on SDK 7.2 sd_flash in \components\drivers_nrf\pstorage\pstorage.c. I suggest that even you do not use SDK7.2, you download it anyways just to see how pstorage library uses this functions.

RE: [nRF51422] Flash write and background scanning

PW — Mon, 04 May 2015 12:52:51 GMT

I did some changes and I've got nRF51422 rev.2, SDK6.1.0, S210, SD3.0.0 inside. Is there any example for S210 and sd_flash_.... functions? There are many examples and subjects for other stacks, but not for this one which I use.

RE: [nRF51422] Flash write and background scanning

Susheel Nuguru — Tue, 21 Apr 2015 05:41:08 GMT

It is always better if you can use the latest revision of hardware and SDK. Fewer PANs and fewer bugs.

RE: [nRF51422] Flash write and background scanning

PW — Mon, 20 Apr 2015 18:50:34 GMT

Thanks for quick answer. I'm working with s210 and the first revision of nRF51422 (QFAAC0). SDK is 4.4.2. Maybe it's time to change revision and SDK? :)

RE: [nRF51422] Flash write and background scanning

Susheel Nuguru — Mon, 20 Apr 2015 12:52:56 GMT

you cannot access NVMC directly with nrf_nvmc functions if you are using the softdevice, as the time needed to perform the flash operation will interface with BLE activity of the softdevice. Like John mentioned you need to use sd_flash** API available in nrf_soc.h.

RE: [nRF51422] Flash write and background scanning

John — Mon, 20 Apr 2015 12:19:35 GMT

I'm not sure what your application is doing, but if the open channel and back ground scanning involves using the softdevice stack, you will need to use radio notifications to time your accesses using those functions. Alternatively you could use the sd_flash functions that will handle the timing for you.