Hi Greg,
On Tue, Apr 04, 2017 at 06:48:31PM +0000, Greg Foringer wrote:
> Hello,
>
> I've spent about 16 hours trying to get the nrf52_boot and blehci image
> flashed to my board. I'm hoping someone has some insight about my problem.
>
> I have installed all the SEGGER JLink tools and drivers (v6.14c) on both my
> OSX host and my Ubuntu 16.04 guest. When using JLinkExe, it can connect to
> the board over USB. I'm using the latest 1.0.0 version of newt. I've
> followed the instructions to build the nrf52_boot bootloader for my nRF52DK
> board (PCA10040 v1.1.0) as well as the blehci app.
[...]
> gdb_cmds:2: Error in sourced command file: localhost:3333: Connection timed
> out.
Hmm, it looks like JLinkGDBServer isn't staying up (or isn't getting
started at all). Probably unlikely, but still worth asking: could you
have an instance of JLinkExe already running on that machine? If any
JLink tool is already running, a second invocation will fail.
One way to debug this is to manually do what newt does and see where
the process fails:
In terminal 1:
JLinkGDBServer -device nRF52 -speed 4000 -if SWD -port 3333
-singlerun -reset
In terminal 2:
arm-none-eabi-gdb
(gdb) mon reset
Resetting target
(gdb) restore
/Users/ccollins/repos/mynewt/core/bin/targets/boot-nrf52dk/app/apps/boot/boot.elf.bin
binary 0
Restoring binary file
/Users/ccollins/repos/mynewt/core/bin/targets/boot-nrf52dk/app/apps/boot/boot.elf.bin
into memory (0x0 to 0x23e0)
(of course you will need to adjust the path of your boot binary).
You can also load the image into slot 0:
(gdb) restore
/Users/ccollins/repos/mynewt/core/bin/targets/blehci-nrf52dk/app/apps/blehci/blehci.img
binary 0x8000
Chris
