STK Debug Adapter Kit

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The Silicon Labs MCU Starter Kit (STK) and Wireless Starter Kit (WSTK) provide a powerful development and debug environment when used with Simplicity Studio. The STK and WSTK provide several debug capabilities and features, including the following:

  • SWD (serial wire debug)
    • 2-pin serial wire debug interface for programming and debugging, using the pins SWCLK and SWDIO.
  • JTAG
    • 4-wire interface for programming and debugging, using the pins TCK, TMS, TDI, and TDO.
  • C2 interface (for 8-bit devices)
    • 2-wire programming interface used by most Silicon Labs 8-bit MCUs.
    • See "AN124: Pin Sharing Techniques for the C2 Interface", which discusses pin sharing for C2 devices.
  • ETM* (embedded trace macrocell)
    • Debug component which enables reconstruction of program execution, and is designed as a high-speed, low-power debug tool that only supports instruction trace.
  • AEM (advanced energy monitoring)
    • Accurate high-speed current measurements and energy debugging/profiling when the STK/WSTK power selection switch is in the AEM position. Use with Simplicity Studio Energy Profiler perspective.
  • PTI (packet trace interface [WSTK only])
    • Physical layer (PHY) level PTI for effective network-level debugging. Monitors all the PHY transmit and receive packets between the MAC and baseband modules within the radio without affecting normal operation.
  • VCOM (virtual COM port)
    • UART COM port interface to the target from the debugger (pass-through UART).
  • Virtual UART
    • SWD-based virtual UART interface to the target from the debugger, available through the SWD interface (SWDIO, SWCLK, and SWO).

These features are available via several different interface means, depending on the features required by the custom target hardware design and the board space available for these interface connectors or test points. These details are discussed in the following sections.

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