Sample project to demonstrate SWV debugging with the Onethinx module using the JLink debugger.

Single Wire Viewer is an ARM implementation to send debug messages over a single wire (SWO) with a high datarate (usually at several Mbps).

Unfortunately, the Onethinx Module doesn't have the SWO pin routed for use outside the module. This can be overcome by using a separate UART configured at 6Mbps and emulating the ARM SWV protocol.

SWV Example: sending debug info to VS Code output window

1. Prerequisites

   • Onethinx LoRaWAN Core Module
   • J-Jink debugger
   • Visual Studio Code
   • Onethinx Core VS Code dependencies pack (compiler, Cypress tools, Cypress PDL, linkersettings etc.)
     • VSCode_OnethinxPack_macOS
     • VSCode_OnethinxPack_Windows
     • VSCode_OnethinxPack_Linux
   • PSoC Creator 4.4 (when reconfiguration of the UART / IO is required).

2. Hardware connection setup.

   • P9_0 should be connected with pin 6 (SWO / TDO) of the 10 pin ARM SWD connector of the J-Link debugger (J-Link Adapter CortexM)
     
     
   • 
     ARM SWD 10 pin connector
     
     
   • 
     Onethinx Dev Kit
     
     

3. Building the example

   • Clean Reconfigure All Projects
     
     if you get errors, try to delete the contents of the build/ folder
     
     
   • Build & Launch
     

4. Adapting the hardware configuration (SWO pin selection, UART baudrate etc.)

   • Start PSoC Creator and open [Project Folder]/Onethinx_Creator.cydsn/Onethinx_Creator.cywrk
   • Modify your configuration accordingly and do a clean-rebuild
   • Go back to VS Code and do a [Clean Reconfigure] and [Build & Launch] (see steps above).

6 MBaud UART Example in PSoC Creator: double click and change settings