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Arm Cortex‑M1 DesignStart FPGA-Xilinx edition User Guide : Conditions to enable the DAP interface

Conditions to enable the DAP interface

The V2C-DAPLink board provides a USB interface to the Cortex®‑M1 design Serial Wire Debug (SWD) connections.

For the V2C-DAPLink board to work, the implementation in the Arty Artix 7 (A7) board must contain a Cortex‑M1 processor supporting SWD with the Quad Serial Port Interface (QSPI) flash interfaces present. For more information on memory map configuration, see Chapter 4 Working with the Cortex®‑M1 DesignStart™ example design.

The Cortex‑M1 processor is an integral part to program QSPI using the Debug Access Port (DAP). To debug or program using the DAP, the processor must be in a valid state of execution. Corrupt software can cause the system to lock. If this happens, you might need to perform a recovery procedure. For more information, see Recovering the DAP connection.

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