Undefined reference to function even though i have included it

[Cortana]

Hi!

I'm trying to merge the flash_fds example with the ble_app_uart, and the twi example. My intention is to read a value from TWI, store it in flash and then send the value by BLE to the toolbox app. I started out with merging the two example ble_app_uart and flash_fds but i'm having trouble with gcc replying that i have undefined functions even though i have included them both in the makefile and the source files. I merged the two examples by the copying the ble_app_uart example to the main of the flash_fds and including the libraries from the makefile of the ble_app onto the flash_fds example. I see that both functions uses a eww file that again uses a ewp file. I have not included the ble_app_uart.eww file to the flash_fds project. I'm using gcc on ubuntu.

The problem is that i get a bunch of undefined references to functions that i have included by including the header files and the path in the makefile. I get a : "collect2: error: ld returned 1 exit status"

[Vidar Berg]

You can use the configurations in the TWI and FDS examples to see which defines you need to add/modify in the sdk_config header used by ble_app_uart. 

"I tried to copy the whole sdk_config file of the flash_fds onto the ble_app config file but that did not work.." 

That will overwrite the existing configuration for the ble_app_uart project.