This is quick instruction how to setup/configure Keil MDK-ARM project file flash and debug mbed SDK test code.

Create a project

• Launch MDK-ARM
• Create new project form menu [Project] - [New uVision Project...] with any project name
  Note: I recommend not to create a project in mbed GitHub local directly to avoid sync problem
  

• Select your target device. e.g. [NXP] - [LPC1114/102]
  

• Do not copy startup code (press 'NO' in the dialog below)
  

Configure settings

• Open project setting from menu [Project] - [Options for Target 'Target 1'...]
• Click 'Output' tab
• Press 'Select Folder for Objects...' button and select your ELF file of mbed test case.
  e.g. C:\Users\toywat01\Documents\GitHub_mbed\build\test\LPC1114\ARM\MBED_11
• Changed ELF file name in 'Name of Executable:' text field.
  e.g. ticker.elf
  

• Click 'Debug' tab
• Select your debug adapter on the right hand side of the setting panel
  e.g. Press 'Use:' radio button and select 'ULINK2/ME Cortex Debugger'
  

• Press 'Settings' button
• Check 'Download to Flash'
  

• Press 'OK' to close the dialog
• Press 'Utilities' tab
• Uncheck 'Use Debug Driver'
  

• Press 'Settings' button
• Check 'Reset and Run'
  

• Press 'OK' to closed the dialog

Flash your test code

• Download and flash your test code from menu [Flash] - [Download]
• You will see a result of flash programming in build output window
  

Debug your test code

• Start debug session from menu [Debug] - [Start/Stop Debug Session]
  

• From command window, enter "bs main" to set breakpoint at main() function.
• Press 'Run' button in toolbar and your test code stops at main() function.
• You can open peripheral register windows from menu [Peripherals], if your target has CMSIS-SVD file. This is very useful feature for mbed SDK debugging.
  

• See also
  http://www.keil.com/support/docs/2575.htm