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PORT_BOARD.md

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Adding A New Board

A board is composed of a Hardware Interface Circuit and target MCU. To create a new board build a description needs to be added to projects.yaml. The yaml descriptions are used to create modules that can be inherited. Create a new board build by adding the product name and the required modules. eg: if the HIC is OpenSDA based on the NXP MK20D50 MCU

    k20dx_myboardname_if:
        - *module_if
        - *module_hic_k20dx
        - records/board/myboardname.yaml

Next create a new file in the records/board directory called myboardname.yaml. This file defines the target MCU and allows overrideable board parameters to be configured. The target MCU in this example exists and is a Nordic nRF51822 (16k RAM variant)

common:
    sources:
        board:
            - source/board/myboardname.c
        target:
            - source/target/nordic/nrf51822/target_16.c
            - source/target/nordic/target_reset.c

This assumes there is already target support present in the codebase. If adding a new target additional steps below will be needed. If the target support exists source/board/myboardname.c needs creation with a BOARD ID. To get a BOARD ID email [email protected]

/**
 * @file    myboardname.c
 * @brief   board ID for myboard
 *
 * DAPLink Interface Firmware
 * Copyright (c) 2009-2016, ARM Limited, All Rights Reserved
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

const char *board_id = "0000";

Now running progen generate -t uvision will create project files including the new board that can be developed and debugged. For more information about the yaml format see the project_generator documentation.

Adding Board to Automated Tests

Update test/info.py so the new board has at least one configuration in SUPPORTED_CONFIGURATIONS

SUPPORTED_CONFIGURATIONS = [
    #   Board ID    Firmware                            Bootloader          Target
    ...
    (   0x240,      'k20dx_frdmk64f_if',                'k20dx_bl',         'FRDM-K64F'                     ),
    ...
]

Configration Fields

  • Board ID - The ID assigned to the board type.
  • Firmware - The name of the firmware as shown in projects.yaml.
  • Bootloader - The name of the bootloader firmware as shown in projects.yaml. Only required on HICs with a DAPLink bootloader.
  • Target - Name of the target for this board.
    • If this is an mbed official board then the target should match the name in the mbed platform page URL. For example the K64F is located at https://developer.mbed.org/platforms/FRDM-K64F/ so it would have the target name FRDM-K64F. Using this naming convention allows the automated tests to use the RESTful Compile API. the automated tests will build the target UART application on-the-fly in the cloud using the RESTful Compile API, download it to the PC, then download the resulting image to the target.
    • If it is not, you will need to build the UART application yourself and supply it to test\run_tests.py via --targetdir. In this case, the target is the application image filename sans extension.

You may need to update one or more other dictionaries. See comments in the code for guidance.

See Automated Tests for more information related to automated testing.