Linker error on example code

[Dudi]

Hi.

I get Linker error when i compile 'iot_secure_dfu_bootloader_secure_dfu_s132_pca10040' example from SDK 16.0.0.

The compilation passed (although i had problem with: 'nrf52hf_armgcc' under 'micro-ecc', which didnt passed makefile), 

Now i get error message of Linking, " can't open C:/nRF52832/nRF5/examples/iot/bootloader/pca10040/s132/ses/ for reading"

What is the reason for that?

I tried to mode the folder closer to C root but it did not help.

In addition, why 'build_all.bat' file under micro-ecc, return error messages on all make files?

Regards,

Dudi

[bjorn-spockeli]

Now i get error message of Linking, " can't open C:/nRF52832/nRF5/examples/iot/bootloader/pca10040/s132/ses/ for reading"

Havent seen this error before, could it be a permissions thing?

In addition, why 'build_all.bat' file under micro-ecc, return error messages on all make files?

 You have probably not set up the correct path to the GCC toolchain in the Makefile.windows file in components\toolchain\gcc. This is my path. 

GNU_INSTALL_ROOT := C:/Program Files (x86)/GNU Tools ARM Embedded/7 2018-q2-update/bin/
GNU_VERSION := 7.3.1
GNU_PREFIX := arm-none-eabi

 

[Dudi]

About the linking error: there is no permission issue because i can compile other example from this SDK. I tried to put the folder directly on C root in order to make short path but it does not help. It is from the SDK16.0.0.

In addition, i am using SEGGER embedded studio. Where should GCC toolchain be?

I tried the folder "C:\Program Files\SEGGER\SEGGER Embedded Studio for ARM 4.42\gcc\arm-none-eabi\bin" with no success.

[bjorn-spockeli]

You need to download the ARM GCC toolchain, please follow the instructions under Install micro-ecc. 

[Dudi]

Thanks, that solved the issues i had with micro-ecc, but...

Why the bootloaders are so big and how come the example in the path below can't fit to the device flash nRF5_SDK_16.0.0_98a08e2\examples\iot\bootloader\pca10040\s132\ses

I would like to create bootloader for nRF52832 with UART DFU, where can i find example with reasonable size?

[bjorn-spockeli]

The bootloader examples should only be about 24kB. 

Please note that the bootloader project has a .reserved_flash section that is the available flash for the application and the protocol stack.