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samples: debug: add CMSIS DAP sample using USB as interface
Add CMSIS DAP sample using USB as interface. Signed-off-by: Maximilian Deubel <[email protected]> Signed-off-by: Johann Fischer <[email protected]>
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‎samples/subsys/dap/CMakeLists.txt‎

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# Copyright (c) 2023 Nordic Semiconductor ASA
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# SPDX-License-Identifier: Apache-2.0
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cmake_minimum_required(VERSION 3.20.0)
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find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
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project(dap)
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FILE(GLOB app_sources src/*.c)
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target_sources(app PRIVATE ${app_sources})

‎samples/subsys/dap/README.rst‎

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.. _dap-sample:
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DAP Sample Application
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######################
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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 USB Bulk interface.
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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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In order for our debug adapter to be recognized by pyOCD we need to change
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Zephyr's VID/PID to IDs known to pyOCD, this is up to the user.
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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)

‎samples/subsys/dap/boards/nrf52840dk_nrf52840.overlay‎

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/*
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* Copyright (c) 2023 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/ {
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dp0 {
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compatible = "zephyr,swdp-gpio";
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status = "okay";
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clk-gpios = <&arduino_header 10 GPIO_ACTIVE_HIGH>; /* D4 */
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dio-gpios = <&arduino_header 8 GPIO_PULL_UP>; /* D2 */
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dout-gpios = <&arduino_header 9 GPIO_ACTIVE_HIGH>; /* D3 */
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dnoe-gpios = <&arduino_header 12 GPIO_ACTIVE_HIGH>; /* D6 */
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noe-gpios = <&arduino_header 11 GPIO_ACTIVE_HIGH>; /* D5 */
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reset-gpios = <&arduino_header 13 GPIO_ACTIVE_HIGH>; /* D7 */
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port-write-cycles = <2>;
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};
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};

‎samples/subsys/dap/boards/thingy91_nrf52840.conf‎

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CONFIG_USB_DEVICE_REMOTE_WAKEUP=n
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CONFIG_USB_MAX_POWER=250
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CONFIG_CMSIS_DAP_DEVICE_VENDOR="Nordic Semiconductor"
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CONFIG_CMSIS_DAP_DEVICE_NAME="nrf9160_xxaa"

‎samples/subsys/dap/boards/thingy91_nrf52840.overlay‎

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/*
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* Copyright (c) 2023 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/ {
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dp0 {
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compatible = "zephyr,swdp-gpio";
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status = "okay";
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clk-gpios = <&gpio1 5 GPIO_ACTIVE_HIGH>;
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dio-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
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noe-gpios = <&gpio0 17 GPIO_ACTIVE_HIGH>;
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port-write-cycles = <2>;
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};
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};

‎samples/subsys/dap/prj.conf‎

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CONFIG_STDOUT_CONSOLE=y
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CONFIG_USB_DEVICE_STACK=y
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CONFIG_USB_DEVICE_BOS=y
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CONFIG_SERIAL=y
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CONFIG_USB_DEVICE_PRODUCT="Zephyr CMSIS-DAP"
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CONFIG_USB_DEVICE_PID=0x0204
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CONFIG_UART_INTERRUPT_DRIVEN=y
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CONFIG_UART_LINE_CTRL=y
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CONFIG_USB_DEVICE_INITIALIZE_AT_BOOT=n
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CONFIG_LOG=y
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CONFIG_USB_DRIVER_LOG_LEVEL_INF=y
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CONFIG_USB_DEVICE_LOG_LEVEL_INF=y
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CONFIG_DAP_LOG_LEVEL_INF=y
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CONFIG_DP_DRIVER_LOG_LEVEL_INF=y
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CONFIG_DAP=y
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CONFIG_GPIO=y
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CONFIG_NET_BUF=y

‎samples/subsys/dap/sample.yaml‎

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sample:
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name: DAP USB
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tests:
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sample.dap.hid:
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build_only: true
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platform_allow: nrf52840dk_nrf52840
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integration_platforms:
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- nrf52840dk_nrf52840
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depends_on: usb_device
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tags: usb

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