Hi I am new in using keil. I have a STM32F4-Discovery and I started using keil based on app_230. But when I try to build the example project I encounter with below error : linking... .\Flash\Blinky.axf: Error: L6218E: Undefined symbol os_set_env (referred from blinky.o). .\Flash\Blinky.axf: Error: L6218E: Undefined symbol rt_dly_wait (referred from blinky.o). .\Flash\Blinky.axf: Error: L6218E: Undefined symbol rt_evt_set (referred from blinky.o). .\Flash\Blinky.axf: Error: L6218E: Undefined symbol rt_evt_wait (referred from blinky.o). .\Flash\Blinky.axf: Error: L6218E: Undefined symbol rt_sys_init (referred from blinky.o). .\Flash\Blinky.axf: Error: L6218E: Undefined symbol rt_tsk_create (referred from blinky.o). .\Flash\Blinky.axf: Error: L6218E: Undefined symbol rt_tsk_delete (referred from blinky.o). Not enough information to list image symbols. Finished: 1 information, 0 warning and 7 error messages. ".\Flash\Blinky.axf" - 7 Error(s), 0 Warning(s).
what is my wrong. I've done nothing in this example. Just I open it and then build.
You've omitted the Library(ies) and/or source file(s) which contain the definitions for these symbols.