f624486f66
Rework the sample to use the new USB device stack and the new DAP backend and align the sample with the WebUSB sample which has a similar BOS descriptor. Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
56 lines
1.8 KiB
ReStructuredText
56 lines
1.8 KiB
ReStructuredText
.. zephyr:code-sample:: cmsis-dap
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:name: CMSIS-DAP
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Implement a custom CMSIS-DAP controller using SWDP interface driver.
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Overview
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********
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This sample app demonstrates use of a SWDP interface driver and CMSIS DAP
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controller through DAP USB backend.
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Requirements
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************
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This sample supports multiple hardware configurations:
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The simplest configuration would be to connect ``SWDIO`` to ``dio``, ``SWDCLK`` to ``clk``
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and optionally ``nRESET`` to ``reset``. The optional ``noe`` pin is used to enable the port,
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e.g. if the SWD connections are multiplexed.
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Building and Running
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********************
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The following commands build and flash DAP sample.
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.. zephyr-app-commands::
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:zephyr-app: samples/subsys/dap
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:board: nrf52840dk_nrf52840
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:goals: flash
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:compact:
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Connect HIC to the target and try some pyOCD commands, for example:
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.. code-block:: console
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pyocd commander -t nrf52840
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0029527 W Board ID FE5D is not recognized [mbed_board]
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Connected to NRF52840 [Sleeping]: FE5D244DFE1F33DB
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pyocd> read32 0x20004f18 32
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20004f18: 20001160 2000244c 00000000 0000e407 | ..` .$L........|
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20004f28: ffffffff ffffffff 00000000 aaaaaaaa |................|
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pyocd> halt
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Successfully halted device
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pyocd> reg
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general registers:
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lr: 0x00009cdd r7: 0x00000000 (0)
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pc: 0x000033ca r8: 0x00000000 (0)
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r0: 0x00000000 (0) r9: 0x00000000 (0)
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r1: 0x20002854 (536881236) r10: 0x00000000 (0)
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r2: 0x20000be4 (536873956) r11: 0x00000000 (0)
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r3: 0x00000000 (0) r12: 0x00000000 (0)
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r4: 0x200017e8 (536877032) sp: 0x20002898
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r5: 0x20001867 (536877159) xpsr: 0x61000000 (1627389952)
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r6: 0x00000000 (0)
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