Switch Keil Debug Interface from JTAG to SWD or SWD to JTAG

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Switch Keil Debug Interface from JTAG to SWD:

• Open your project in Keil (uVision).
• Go to:
  Project→ Options for Target 'Target 1'(or whatever your target is named).
• Select the "Debug" tab.
• Click on the "Settings" button next to the selected debugger (should be J-Link / J-Trace).
• In the new window:
  
  
  • Set "J-Link/J-Trace Adapter" Port to SWD instead of JTAG.
  • Keep speed at default or set to something safe like 1000–4000 kHz (Max can change) .
    
    
• Click OK to save settings.
• Now try flashing again ( F8 or "Load" button).
  
  

Switch Keil Debug Interface from SWD to JTAG :

• Open your project in Keil (uVision).
• Go to:
  Project→ Options for Target 'Target 1'(or whatever your target is named).
• Select the "Debug" tab.
• Click on the "Settings" button next to the selected debugger (should be J-Link / J-Trace).
• In the new window:
  
  
  • Set "J-Link/J-Trace Adapter" Port to JTAGinstead of SWD .
  • Keep speed at default or set to something safe like 1000–10000 kHz (Max can change) .
    
    
• Click OK to save settings.
• Now try flashing again ( F8 or "Load" button).