nrf52 Bootloader_secure_ble

Question

Hello, I am using nrf52 with sdk 13.0.0. Bootloader_secure_ble gives error while compiling. What should I do ? 
 Error[Lt009]: Inconsistent wchar_t size 
 micro_ecc_lib_uECC.c.o(micro_ecc_lib_nrf52.a) has wchar_t size 16 bits 
 app_error_weak.o and 66 other objects have wchar_t size 32 bits

bjorn-spockeli · Accepted Answer

@hhuseyin: Just discussed this with one of our SW developers and according to him you need to use IAR v7.x as there are many changes, described here , that are not compatible with our SDK yet, i.e. will be in a future release. So, for now, stay with IAR v7.x and disregard my previous comment. Removing the -fshort-wchar flag may remove the linker errors, but we cant guarantee that the rest of the SDK source will behave as it is intended to with v8.x.

Marco V. · Answer

Hello Howard, 
 I had the same problem, then the SDK v15.2.0 Release Notes helped me: 
 " Note for IAR 8 users: (Libraries for IAR 8 require wchar_t to be of size 32 bits while IAR 7 requires 16 bits). 
 To run a project using IAR 8, follow these intructions: 
 - Open the IAR project in IAR 8. The IAR workbench will automatically generate an IAR 8 compatible project file. 
 - If the project contains one of the precompiled libraries listed below, replace it with the IAR 8 compatible alternative (there are no projects targeting nRF51 in this SDK). 
 - Save the project. 
 - When building the project, you might get the warning: "The header file 'cmsis_iar.h' is obsolete and should not be used. [...]". 
 - The problem is described in DevZone post: devzone.nordicsemi.com/.../iar-ewarm-8-22-1-complains-about-cmsis_iar-h The solution is to remove all occurrences of #include <cmsis_iar.h>. 
 The affected libraries are: 
 - micro-ecc crypto: 
 
 IAR7: Includes library located in the folder named &ldquo;&hellip;_iar\&hellip;&rdquo;. 
 IAR8: Switch to using the library from the folder named &ldquo;&hellip;_armgcc\&hellip; &rdquo; 
 
 " 
 I've simply cross-compiled "_armgcc\" and switched the library and all seems to work correctly.

nrf52 Bootloader_secure_ble

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