I would like to know which IDE's I am able to use in order to easily compile code to a board based on the DA14581. It would be helpful if the compiler had a full version that is free

Hi,
I'm following the User Manual: Software Development Guide (UM-B-003) and I was trying out Chapter 6: Addition of existing application code for profiles . In that Chapter, application code initialising and controlling the Device Information Service Server(DISS) role profile will be added to the application. I'm using the "template" project and I'm making the changes as given in steps 6.1 to 6.5. But the step 6.6: Application verification, in which it asks me to build the application, actually, FAILS. The errors during compilation are as follows:


...
...
compiling app.c...
compiling app_sec.c...
compiling app_sec_task.c...
compiling app_task.c...
.\..\..\..\..\src\modules\app\api\app_task_handlers.h(67): error: #20: identifier "DISS_CREATE_DB_CFM" is undefined
{DISS_CREATE_DB_CFM, (ke_msg_func_t)diss_create_db_cfm_handler},
.\..\..\..\..\src\modules\app\api\app_task_handlers.h(67): error: #20: identifier "diss_create_db_cfm_handler" is undefined
{DISS_CREATE_DB_CFM, (ke_msg_func_t)diss_create_db_cfm_handler},
.\..\..\..\..\src\modules\app\api\app_task_handlers.h(67): error: #44: expression must have pointer type
{DISS_CREATE_DB_CFM, (ke_msg_func_t)diss_create_db_cfm_handler},
.\..\..\..\..\src\modules\app\api\app_task_handlers.h(68): error: #20: identifier "DISS_DISABLE_IND" is undefined
{DISS_DISABLE_IND, (ke_msg_func_t)diss_disable_ind_handler},
.\..\..\..\..\src\modules\app\api\app_task_handlers.h(68): error: #20: identifier "diss_disable_ind_handler" is undefined
{DISS_DISABLE_IND, (ke_msg_func_t)diss_disable_ind_handler},
.\..\..\..\..\src\modules\app\api\app_task_handlers.h(68): error: #44: expression must have pointer type
{DISS_DISABLE_IND, (ke_msg_func_t)diss_disable_ind_handler},
..\..\..\..\src\modules\app\src\app_task.c(375): error: #28: expression must have a constant value
const struct ke_state_handler app_default_handler =
E_STATE_HANDLER(app_default_state);
..\..\..\..\src\modules\app\src\app_task.c: 0 warnings, 7 errors
compiling app_template_proj.c...
compiling app_console.c...
compiling app_dis.c...
compiling app_dis_task.c...
".\out\template.axf" - 7 Error(s), 2 Warning(s).
Target not created.
Build Time Elapsed: 00:00:23


I've made several independent attempts, starting from the scratch, just to rule out any missing of steps in between, but on all those occasions the build step has failed with same errors.

Any help to fix these errors will be much appreciated.