Problem with micro_ecc_lib_nrf52.lib in Keil.(SDK 15.2: dfu\secure_bootloader\pca10040e_ble)

[June6]

When I compile the program times an error : 

.\_build\nrf52810_xxaa_s112.axf: Error: L6366E: uECC.c.o attributes are not compatible with the provided attributes .
Object uECC.c.o contains Build Attributes that are incompatible with the provided attributes.
Tag_FP_arch = VFPv4 instructions were permitted, but only citing registers D0-D15 (=6)
Tag_ABI_HardFP_use = This code should execute on the single-precision variant derived from Tag_FP_arch (=1)
Tag_FP_HP_extension = Use of the optional half-precision extension to VFPv3/Advanced SIMDv1 was permitted (=1)
Not enough information to list image symbols.
Not enough information to list load addresses in the image map.

But when I use the same lib library file in pca10040 projects, I don't get an error. I don't know what went wrong here. I wish someone would help me.

Thanks.

June6

[June6]

Sorry, I think I made a mistake. This problem should not be related to micro_ecc_lib_nrf52.lib, but uecc.h

[June6]

And the same project, my colleague's computer can be compiled. His computer 10040 and 10040e can be compiled.

[haakonsh]

It's an issue with FPU intructions used in the µECC library. 

See similar post. 

[June6]

Alright, I have solved the problem. I regenerated the lib library file in the nrf52nf_keil directory. And then it works.

Thanks

wish u all best