Stepper Library for Raspberry Pi Pico

A library to control a bipolar stepper motor for the Raspberry Pi Pico board.

Example

An example project is available under example directory.

To compile, first make sure you have cloned pico-sdk somewhere on your system and that you have set PICO_SDK_PATH env var to point to where you cloned it.

export PICO_SDK_PATH=/path/to/pico-sdk

Then:

$ git clone git@github.com:beshrkayali/pico_stepper.git
$ cd pico_stepper/example
$ mkdir build && cd build
$ cmake ..
$ make

This should create stepper_example.elf and stepper_example.uf2 in your build directory.

Push and hold the BOOTSEL button and plug your Pico into the USB port, this will mount it as a mass storage device called RPI-RP2. You can now drag and drop the stepper_example.uf2 file onto it. Your Pico should reboot.

The example assumes you're wiring your stepper's N1, N2, N3, N4 to your Pico's GPIO1, GPIO2, GPIO3, GPIO4 consecutively.

- N1 -> GPIO1
- N2 -> GPIO2
- N3 -> GPIO3
- N4 -> GPIO4

If you're powering your stepper from an external source, make sure you wire the ground from the power source to your Pico's ground.

License

Copyright (C) Beshr Kayali.

Based on Arduino Stepper Library. Copyright (C) Arduino LLC. Copyright (C) Sebastian Gassner. Copyright (c) Noah Shibley.

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA