Laird BLE654 with Segger embedded Studio and NRF SDK

[Andreas48752]

Hi!

I am using the Segger embedded Studio with PCA10056 successfully. Now I have to evaluate LARD DVK-BL654 (because it has external antenna). I found a guide which says to use eclipse (Junu version, which is old?).

So I was wondering if I could use Embedded Studio also for LAIRD? Is this just something like a board configuration thing?

I already changed  the clock according to the guide i found:

"By default, the BL654 uses the nRF52840’s on-chip RC oscillator as its clock source, as opposed to the nRF52840 development kits which use an external crystal. The difference in oscillator source should therefore be reflected in the SDK".

It compiles and I can select debug (connection to device via j-link is done) but after that nothing happens...

Can somebody help?

Thanks,

Andreas

[awneil]

It's still an nRF52840 - so of course you can use SES!

Or any other IDE.

Andreas48752 said:

I can select debug (connection to device via j-link is done) but after that nothing happens...

What do you mean by, "select debug" ?

Have you looked at the tutorials on how to use SES to download, run & debug code?

[Andreas48752]

Thank you for the reply. 

I mean that I can run the sample projects on the nordic nrf52840-dk but not on the DVK-BL654. I can select "Debug->Go" but after Downloading the app nothing happens on the LAIRD board:

[awneil]

When you do Debug > Go, it will download the code and then stop at the start of main():

[Andreas48752]

That is, what it normally does. But not with the LAIRD Board. My screenshot above is after I hit "Debug->Go". But no stop at the start of main() happens. 

I tried the blinky example. This works with the "blank" folder but not mit "mbr". BSP example goes to start of main but hangs at clock_initialization:

void clock_initialization()
{
NRF_CLOCK->LFCLKSRC = (CLOCK_LFCLKSRC_SRC_Xtal << CLOCK_LFCLKSRC_SRC_Pos);
NRF_CLOCK->EVENTS_LFCLKSTARTED = 0;
NRF_CLOCK->TASKS_LFCLKSTART = 1;

while (NRF_CLOCK->EVENTS_LFCLKSTARTED == 0)
{
// Do nothing.
}
}

[awneil]

Sounds like you haven't (quite) got the LF clock setup right.

See: devzone.nordicsemi.com/.../185362

How to properly post source code: