Help running BLE APP ATT MTU THROUGHPUT example

[Gary]

Hi,

I am trying to replicate the "Throughput and long range demo" from devzone.nordicsemi.com/.../

I have two nRF52840 boards. I am using IAR studio. I can compile, build and run the blinky demo without any problems. However whenever I try to do anything with Bluetooth I am running into a brick wall.

First question. How do the Softdevices work. Are they something that is flashed onto the device or is it a library that is linked against during build. I have SDK 13 and I also have downloaded s140 5.0.0.3-alpha.

If I have the blinky program running and then download and run a build of a Bluetooth program then the LEDs keeping running, almost as if the board didn't get reprogrammed, but IAR says there is a debug sessions running.

Is that normal? Any clues about what I could be doing wrong?

Also, is there a way to get logging information from NRF_LOG_INFO without wiring up a serial cable? Over USB? Is that what the nRF USB port is for?

Thanks. Gary.

[Gary]

As a follow up, the heart rate demo from here www.nordicsemi.com/.../Getting-started-with-the-nRF52840-Preview-Development-Kit works perfectly with the nRF Toolbox on Android. But that is using the .hex file directly... I just tried building from source but it exceeds the 32K limit of my version of IAR... I will try to build using GCC now.