nRF52810 minimal project example with makefile for arm-gcc

[dav01]

Hi, Just porting an old project from nrf52832 to a nrf52810.
I've had trouble finding a bare-bones project (arg-gcc), basically just main + log for the 52810.

I understand I can generate this using the keil mdk, but I prefer not to install (I only drink Java).

I've modified my arm_Makefile based on the infocenter instructs, i.e. new .ld and ram/rom addresses.
Just guessed the compiler flags, so removed some fpu stuff..
seems though that it doesn't seem to execute as I just toggle a pin + log via SWD, without getting any action.

Tested Jlinkexe and getting this, maybe a clue (I probably missed some compiler flags..)

Device "NRF52810_XXAA" selected.

Connecting to target via SWD
...

AP[0]: Core found
AP[0]: AHB-AP ROM base: 0xE00FF000
CPUID register: 0x410FC241. Implementer code: 0x41 (ARM)
Found Cortex-M4 r0p1, Little endian.
FPUnit: 6 code (BP) slots and 2 literal slots
CoreSight components:
ROMTbl[0] @ E00FF000
ROMTbl[0][0]: E000E000, CID: B105E00D, PID: 000BB000 SCS
ROMTbl[0][1]: E0001000, CID: B105E00D, PID: 003BB002 DWT
ROMTbl[0][2]: E0002000, CID: B105E00D, PID: 002BB003 FPB
Cortex-M4 identified.

Maybe there is a hidden git-repo or zip somewhere with a clean build-tree / template.

Please advice. Thx! 

[tesc]

Hi,

I am not quite sure if I understand what you are looking for, but there are a lot of "pca10040e" examples in the SDK, all of which are for the nRF52810. Both BLE examples (using SoftDevice) and peripheral examples such as the peripheral/blinky example.

Regards,
Terje

[dav01]

I'm just after a bare metal arm-gcc make script for the nrf52810

The makefiles in the example folder contains ASMFLAGS += -DDEVELOP_IN_NRF52832, so I assume these are more targeted for the evkits?

[tesc]

Hi,

Sorry, yes.

Remove the DEVELOP_IN_NRF52832 define, both from CFLAGS and from ASMFLAGS. It is for including errata workarounds that are required on the nRF52832 (but not on the nRF52810).

Depending on the layout of your board you may need to provide a custom_board.h file and replace the BOARD_PCA10040 define with BOARD_CUSTOM. See Using the SDK with other boards.

Those two changes are the only ones required for porting a pca10040e project to a (custom) nRF52810 board.

For instructions on how to port a pca10040 project to nRF52810, see Transferring the project to nRF52810 hardware.

Regards,
Terje

[dav01]

thanks.

A Hot tip and the reason it didn't run.

I picked a nrf52810_xxaa.ld from the SDK folder and didn't realize (until now) that ORIGIN wasnt 0x0, rather depending on MBR to be flashed.. Since I don't use bootloaders or Softdev, I totally missed out on this.  

[tesc]

Hi,

Thank you for sharing that. Yes, the non-SoftDevice examples usually still use a Master Boot Record (MBR), in which case the application starts at 0x1000. You will find the MBR at <sdk folder>/components/softdevice/mbr.

Alternatively, just as you wrote, you can change the start address to 0x0 for not using an MBR.

Regards,
Terje