Build target 'nrf51822_xxaa (256K)'
creating preprocessor file for main.c...
compiling main.c...
C:\Keil_v5\ARM\PACK\ARM\CMSIS\4.1.1\CMSIS\Include\core_cm0.h(699): error:  #169: expected a declaration
  }
..\..\..\..\Include\nrf_delay.h(11): error:  #10: "#" not expected here
          SUBS    R0, R0, #1
..\..\..\..\Include\nrf_delay.h(72): warning:  #12-D: parsing restarts here after previous syntax error
  void nrf_delay_ms(uint32_t volatile number_of_ms);
..\main.c(48): error:  #20: identifier "nrf_delay_ms" is undefined
          nrf_delay_ms(500);
..\main.c: 1 warning, 3 errors
creating preprocessor file for cpptest.cpp...
..\cpptest.cpp(31): warning:  #1-D: last line of file ends without a newline
  }
..\cpptest.cpp: 1 warning, 0 errors
compiling cpptest.cpp...
C:\Keil_v5\ARM\PACK\ARM\CMSIS\4.1.1\CMSIS\Include\core_cm0.h(699): error:  #169: expected a declaration
  }
..\cpptest.cpp(31): warning:  #1-D: last line of file ends without a newline
  }
..\cpptest.cpp(31): warning: At end of source:  #12-D: parsing restarts here after previous syntax error
..\cpptest.cpp: 2 warnings, 1 error
assembling arm_startup_nrf51.s...
creating preprocessor file for system_nrf51.c...
compiling system_nrf51.c...
creating preprocessor file for nrf_delay.c...
compiling nrf_delay.c...
C:\Keil_v5\ARM\PACK\ARM\CMSIS\4.1.1\CMSIS\Include\core_cm0.h(699): error:  #169: expected a declaration
  }
..\..\..\..\Include\nrf_delay.h(11): error:  #10: "#" not expected here
          SUBS    R0, R0, #1
..\..\..\..\Include\nrf_delay.h(72): warning:  #12-D: parsing restarts here after previous syntax error
  void nrf_delay_ms(uint32_t volatile number_of_ms);
..\..\..\..\Source\nrf_delay\nrf_delay.c(24): error:  #20: identifier "nrf_delay_us" is undefined
          nrf_delay_us(999);
..\..\..\..\Source\nrf_delay\nrf_delay.c: 1 warning, 3 errors
".\_build\blinky_arm.axf" - 7 Error(s), 5 Warning(s).
Target not created