obmpy

This tool is modified from ampy, which fixes the bug that the serial port can not time out, and supports calling with python -m. At the same time, it also supports setting rts/dtr to support K210 MaixDock and other devices that need to set the rts and dtr level to high to run.

MicroPython Tool (obmpy) - Utility to interact with a CircuitPython or MicroPython board over a serial connection.

Obmpy is meant to be a simple command line tool to manipulate files and run code on a CircuitPython or MicroPython board over its serial connection. With obmpy you can send files from your computer to the board's file system, download files from a board to your computer, and even send a Python script to a board to be executed.

Installation

You can use obmpy with either Python 2.7.x or 3.x and can install it easily from Python's package index. On MacOS or Linux, in a terminal run the following command (assuming Python 3):

pip3 install --user openblock-obmpy

On Windows, do:

pip install openblock-obmpy

Note on some Linux and Mac OSX systems you might need to run as root with sudo:

sudo pip3 install openblock-obmpy

If you don't have Python 3 then try using Python 2 with:

pip install openblock-obmpy

Once installed verify you can run the obmpy program and get help output:

obmpy --help

You should see usage information displayed like below:

Usage: obmpy [OPTIONS] COMMAND [ARGS]...

obmpy - OpenBlock MicroPython Tool

Obmpy is a tool to control MicroPython boards over a serial connection.
Using obmpy you can manipulate files on the board's internal filesystem and
even run scripts.

Options:
-p, --port PORT             Name of serial port for connected board.  Can
                            optionally specify with OBMPY_PORT environment
                            variable.  [required]
-b, --baud BAUD             Baud rate for the serial connection (default
                            115200).  Can optionally specify with OBMPY_BAUD
                            environment variable.
-d, --delay DELAY           Delay in seconds before entering RAW MODE
                            (default 0). Can optionally specify with
                            OBMPY_DELAY environment variable.
-R, --rts RTS               Set RTS flow control (default True). Can
                            optionally specify with OBMPY_RTS environment
                            variable.
-D, --dtr DTR               Set DTR flow control (default True). Can
                            optionally specify with OBMPY_DTR environment
                            variable.
-a, --abort-time ABORTTIME  The number of times an abort command was sent
                            after entering repl mode (default 2). Can
                            optionally specify with ABORT_TIME environment
                            variable.
-s, --state STATE           Set raw repl state (default N). If it is the
                            default value, the raw REPL will be opened and
                            exited on each command. This can be set to
                            N|S|C|E
--version                   Show the version and exit.
--help                      Show this message and exit.

Commands:
fsi    Get the file system information.
get    Retrieve a file from the board.
ls     List contents of a directory on the board.
mkdir  Create a directory on the board.
put    Put a file or folder and its contents on the board.
reset  Perform soft reset/reboot of the board.
rm     Remove a file from the board.
rmdir  Forcefully remove a folder and all its children from the board.
run    Run a script and print its output.

If you'd like to install from the Github source then use the standard Python setup.py install (or develop mode):

python3 setup.py install

Note to run the unit tests on Python 2 you must install the mock library:

pip install mock

Usage

Obmpy is made to talk to a CircuitPython MicroPython board over its serial connection. You will need your board connected and any drivers to access it serial port installed. Then for example to list the files on the board run a command like:

obmpy --port /dev/tty.SLAB_USBtoUART ls

You should see a list of files on the board's root directory printed to the terminal. Note that you'll need to change the port parameter to the name or path to the serial port that the MicroPython board is connected to.

Other commands are available, run obmpy with --help to see more information:

obmpy --help

Each subcommand has its own help, for example to see help for the ls command run (note you unfortunately must have a board connected and serial port specified):

obmpy --port /dev/tty.SLAB_USBtoUART ls --help

Configuration

For convenience you can set an OBMPY_PORT environment variable which will be used if the port parameter is not specified. For example on Linux or OSX:

export OBMPY_PORT=/dev/tty.SLAB_USBtoUART
obmpy ls

Or on Windows (untested) try the SET command:

set OBMPY_PORT=COM4
obmpy ls

Similarly, you can set OBMPY_BAUD and OBMPY_DELAY to control your baud rate and the delay before entering RAW MODE.

To set these variables automatically each time you run obmpy, copy them into a file named .obmpy:

# Example .obmpy file
# Please fill in your own port, baud rate, and delay
OBMPY_PORT=/dev/cu.wchusbserial1410
OBMPY_BAUD=115200
# Fix for macOS users' "Could not enter raw repl"; try 2.0 and lower from there:
OBMPY_DELAY=0.5
# To set rts and dtr level
OBMPY_RTS=False
OBMPY_DTR=False
# Fix for k210 'could not enter raw repl', Just send one 0x03 when try to bort task.
OBMPY_ABORTTIME=1

You can put the .obmpy file in your working directory, one of its parents, or in your home directory.