pyocd

Flash your mbed / DAP-link device from Atom with pyOCD
wendlers
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atom-pyocd - pyOCD integration for Atom

This package allows you to flash your mbed / DAP-link device from within Atom using pyOCD. It is meant as an extension to the build-med to allow flashing the results from the mbed-cli build process.

Features

  • Configuration dialog to configure target file, board ID etc. on per project basis (configuration is written to pyocd_settings.json).
  • Flash .hex or .bin file
  • Erase flash

screenshot

Prerequisites

In order to use this package, pyOCD needs to be installed on your machine. For details on how to install pyOCD see the instructions. On a typical Linux system the following command should to the trick:

sudo pip install --pre -U pyocd

Please note, that pyOCD needs Python 2.7. Thus if your default Python interpreter is 3.0 you might need to substitute pip with pip2.

To access the DAP-link interface as a normal user, it is very likely that you need to add a udev rule. This rule is board specific, but typically it looks something like this:

# mbed CMSIS-DAP
ATTRS{idVendor}=="0d28", ATTRS{idProduct}=="0204", MODE="664", GROUP="plugdev"
KERNEL=="hidraw*", ATTRS{idVendor}=="0d28", ATTRS{idProduct}=="0204", MODE="664", GROUP="plugdev"

Put the rule into /etc/udev/rules.d/99-daplik.rules and restart udev with:

sudo udevadm control --reload-rules

Installation

To install this package from the package repository:

apm install pyocd

Or install from git:

cd $HOME/$MY_GIT_REPOS
git clone https://github.com/wendlers/atom-pyocd

Change into the newly cloned directory and link the package into your atom install:

cd atom-pyocd
apm link

Next, install required node packages:

apm install

Now, when you start your atom next time, you might be asked to install the some dependencies.

Usage

Quick Start

  • Connect your board
  • Open a project for your board in Atom. Compile it to a .hex or .bin file (if you use mbed-cli and like to compile directly from Atom, you might want to try the build-med package).
  • Configure pyOCD for your project by opening the pyOCD panel with shift+alt+p (or from right click menu and selecting pyocd: toggle).
  • In the configuration panel at least specify a target and a file.
  • Now hit flash or press shift-alt-s to flash your board.
  • Flashing progress is indicated by the spinning busy indicator in the right bottom corner.
  • Depending on your board, you might need to manually reset it after flashing to make your program run.

Configuration Parameters

The following could be set in the pyOCD panel:

  • The target MCU
  • The board ID which is only needed if you have more than one board connected.
  • The file to flash. Could be a .bin or .hex file.
  • If the chip erase switch is turned on, a full chip-erase will be performed when flashing, else only a sector erase will be done (switches -ce and -se of pyocd-flashtool).
  • If the fast program switch is enabled, only the CRC of each page to is used to determine if it already has the same data (-fp switch of pyocd-flashtool).

In the package settings the following could be configured:

  • pyocd-flashtool binary : name and optional path for the flashtool which comes with pyOCD.

Available Functions

The following functions could be performed (from the pyOCD panel,the menu, the context-menu or by keyboard shortcut):

  • toggel pyOCD panel (shift+alt+p): open the pyOCD panel
  • flash (shift-alt-s): flash specified file
  • erase (shift-alt-e): erase chip