# pyOCD **Repository Path**: junmomo/pyOCD ## Basic Information - **Project Name**: pyOCD - **Description**: No description available - **Primary Language**: Unknown - **License**: Apache-2.0 - **Default Branch**: master - **Homepage**: None - **GVP Project**: No ## Statistics - **Stars**: 0 - **Forks**: 0 - **Created**: 2020-10-11 - **Last Updated**: 2020-12-19 ## Categories & Tags **Categories**: Uncategorized **Tags**: None ## README pyOCD ===== pyOCD is an open source Python package for programming and debugging Arm Cortex-M microcontrollers using multiple supported types of USB debug probes. It is fully cross-platform, with support for Linux, macOS, and Windows. A command line tool is provided that covers most use cases, or you can make use of the Python API to enable low-level target control. A common use for the Python API is to run and control CI tests. Upwards of 70 popular MCUs are supported built-in. In addition, through the use of CMSIS-Packs, nearly every Cortex-M device on the market is supported. The `pyocd` command line tool gives you total control over your device with these subcommands: - `gdbserver`: GDB remote server allows you to debug using gdb via either the console or [several GUI debugger options](#recommended-gdb-and-ide-setup). - `flash`: Program files of various formats into flash memory. - `erase`: Erase part or all of an MCU's flash memory. - `pack`: Manage [CMSIS Device Family Packs](http://arm-software.github.io/CMSIS_5/Pack/html/index.html) that provide additional target device support. - `commander`: Interactive REPL control and inspection of the MCU. - `server`: Share a debug probe with a TCP/IP server. - `list`: Show connected devices. The API and tools provide these features: - halt, step, resume control - read/write memory - read/write core registers - set/remove hardware and software breakpoints - set/remove watchpoints - write to flash memory - load binary, hex, or ELF files into flash - reset control - access CoreSight DP and APs - SWO and SWV - and more! Configuration and customization is supported through [config files](docs/configuration.md), [user scripts](docs/user_scripts.md), and the Python API. News ---- - PyOCD has moved to [its own organization](https://github.com/pyocd/) on GitHub! You will continue to see further changes to increase communication and make pyOCD a more independent and open project. - _**Important note**: Python 2 support is deprecated and is planned to be dropped from an upcoming release._ Existing releases of pyOCD will, of course, continue to work with Python 2. If this is a major problem for you moving forward, please create a [new issue](https://github.com/mbedmicro/pyOCD/issues/new/choose) describing your concerns. Requirements ------------ - Python 3.6.0 or later. Currently Python 2.7.9 or later also works, but see note above about Python 2 support being deprecated. - macOS, Linux, or Windows 7 or newer - A recent version of [libusb](https://libusb.info/). See [libusb installation](#libusb-installation) for details. - Microcontroller with an Arm Cortex-M CPU - Supported debug probe - [CMSIS-DAP](http://www.keil.com/pack/doc/CMSIS/DAP/html/index.html) v1 (HID), such as: - An on-board debug probe using [DAPLink](https://os.mbed.com/handbook/DAPLink) firmware. - NXP LPC-LinkII - [CMSIS-DAP](http://www.keil.com/pack/doc/CMSIS/DAP/html/index.html) v2 (WinUSB), such as: - [DAPLink](https://os.mbed.com/handbook/DAPLink) firmware version 0254 or newer. - Cypress KitProg3 - Keil ULINKplus - SEGGER J-Link (experimental) - STLinkV2 or STLinkV3, either on-board or the standalone versions. Status ------ PyOCD is functionally reliable and fully useable. The Python API is considered partially unstable as we are restructuring and cleaning it up prior to releasing version 1.0. Documentation ------------- The pyOCD documentation is located in [the docs directory](docs/). In addition to user guides, you can generate reference documentation using Doxygen with the supplied [config file](docs/Doxyfile). Installing ---------- The latest stable version of pyOCD may be installed via [pip](https://pip.pypa.io/en/stable/index.html) as follows: ``` $ pip install -U pyocd ``` The latest pyOCD package is available [on PyPI](https://pypi.python.org/pypi/pyOCD/) as well as [on GitHub](https://github.com/mbedmicro/pyOCD/releases). To install the latest prerelease version from the HEAD of the master branch, you can do the following: ``` $ pip install --pre -U git+https://github.com/mbedmicro/pyOCD.git ``` You can also install directly from the source by cloning the git repository and running: ``` $ python setup.py install ``` Note that, depending on your operating system, you may run into permissions issues running these commands. You have a few options here: 1. Under Linux, run with `sudo -H` to install pyOCD and dependencies globally. (Installing with sudo should never be required for macOS.) 2. Specify the `--user` option to install local to your user. 3. Run the command in a [virtualenv](https://virtualenv.pypa.io/en/latest/) local to a specific project working set. For notes about installing and using on non-x86 systems such as Raspberry Pi, see the [relevant documentation](docs/installing_on_non_x86.md). ### libusb installation [pyusb](https://github.com/pyusb/pyusb) and its backend library [libusb](https://libusb.info/) are dependencies on all supported operating systems. pyusb is a regular Python package and will be installed along with pyOCD. However, libusb is a binary shared library that does not get installed automatically via pip dependency management. How to install libusb depends on your OS: - macOS: use Homebrew: `brew install libusb` - Linux: should already be installed. - Windows: download libusb from [libusb.info](https://libusb.info/) and place the DLL in your Python installation folder next to python.exe. Make sure to use the same 32- or 64-bit architecture as your Python installation. *Note: due to a [known issue](https://github.com/mbedmicro/pyOCD/issues/684), the current recommendation is to use [libusb version 1.0.21](https://github.com/libusb/libusb/releases/tag/v1.0.21) on Windows instead of the most recent version.* ### udev rules on Linux On Linux, particularly Ubuntu 16.04+, you must configure udev rules to allow pyOCD to access debug probes from user space. Otherwise you will need to run pyOCD as root, using sudo, which is very highly discouraged. (You should _never_ run pyOCD as root on any OS.) To help with this, example udev rules files are included with pyOCD in the [udev](https://github.com/mbedmicro/pyOCD/tree/master/udev) folder. The [readme](https://github.com/mbedmicro/pyOCD/tree/master/udev/README.md) in this folder has detailed instructions. ### Target support See the [target support documentation](docs/target_support.md) for information on how to check if the MCU(s) you are using have built-in support, and how to install support for additional MCUs via CMSIS-Packs. Standalone GDB server --------------------- After you install pyOCD via pip or setup.py, you will be able to execute the following in order to start a GDB server powered by pyOCD: ``` $ pyocd gdbserver ``` You can get additional help by running ``pyocd gdbserver --help``. Example command line GDB session showing how to connect to a running `pyocd gdbserver` and load firmware: ``` $ arm-none-eabi-gdb application.elf target remote localhost:3333 load monitor reset ``` The `pyocd gdbserver` subcommand is also usable as a drop in place replacement for OpenOCD in existing setups. The primary difference is the set of gdb monitor commands. Recommended GDB and IDE setup ----------------------------- The recommended toolchain for embedded Arm Cortex-M development is [GNU Arm Embedded](https://developer.arm.com/tools-and-software/open-source-software/gnu-toolchain/gnu-rm), provided by Arm. GDB is included with this toolchain. For [Visual Studio Code](https://code.visualstudio.com), the [cortex-debug](https://marketplace.visualstudio.com/items?itemName=marus25.cortex-debug) plugin is available that supports pyOCD. The GDB server also works well with [Eclipse Embedded CDT](https://projects.eclipse.org/projects/iot.embed-cdt), previously known as [GNU MCU/ARM Eclipse](https://gnu-mcu-eclipse.github.io/). It fully supports pyOCD with an included pyOCD debugging plugin. To view peripheral register values either the built-in Eclipse Embedded CDT register view can be used, or the Embedded System Register Viewer plugin can be installed. The latter can be installed from inside Eclipse adding `http://embsysregview.sourceforge.net/update` as a software update server URL under the "Help -> Install New Software..." menu item. Development setup ----------------- Please see the [Developers' Guide](docs/developers_guide.md) for instructions on how to set up a development environment for pyOCD. Contributions ------------- We welcome contributions to pyOCD in any area. Please see the [contribution guidelines](CONTRIBUTING.md) for detailed requirements for contributions. To report bugs, please [create an issue](https://github.com/mbedmicro/pyOCD/issues/new) in the GitHub project. License ------- PyOCD is licensed with the permissive Apache 2.0 license. See the [LICENSE](LICENSE) file for the full text of the license. Copyright © 2006-2020 Arm Ltd and others (see individual source files)