EMG Gripper

The code is located in software/apps/gripper

Northwestern Micro:bit v2 Base

Starter code for Northwestern course CE346 based on Micro:bit v2.

This repository has applications and board initialization that connects to the build system provided by nrf52x-base.

Requirements

1. Various tools

   • build-essential (make)
   • git
   • python3
   • pyserial (sudo apt install python3-serial)

2. ARM cross-compiler toolchain: gcc-arm-none-eabi toolchain

   On Ubuntu:

   cd /tmp \
   && wget -c https://developer.arm.com/-/media/Files/downloads/gnu-rm/9-2020q2/gcc-arm-none-eabi-9-2020-q2-update-x86_64-linux.tar.bz2 \
   && tar xjf gcc-arm-none-eabi-9-2020-q2-update-x86_64-linux.tar.bz2 \
   && sudo mv gcc-arm-none-eabi-9-2020-q2-update /opt/gcc-arm-none-eabi-9-2020-q2-update \
   && rm gcc-arm-none-eabi-9-2020-q2-update-x86_64-linux.tar.bz2 \
   && sudo ln -s /opt/gcc-arm-none-eabi-9-2020-q2-update/bin/* /usr/local/bin/.
   

   On MacOS:

   brew tap ArmMbed/homebrew-formulae
   brew install arm-none-eabi-gcc
   

3. JTAG programming tools: Segger JLink

   Pick the correct package for your OS under "Software and documentation pack".

4. Update the JTAG firmware on your Micro:bit v2

   Follow the instructions here: https://www.segger.com/products/debug-probes/j-link/models/other-j-links/bbc-microbit-j-link-upgrade/

   (You can later restore the original firmware with the instructions here: https://microbit.org/get-started/user-guide/firmware/)

Installation

• Clone the repository
• Change directory into the repository
• git submodule update --init --recursive (this will take a couple minutes to complete)

Building and loading applications

To build an application, use make inside of the application's directory.

make flash uploads the application to the board using JTAG.

Getting print data

The Micro:bit v2 prints information through a serial port at 38400 baud. You can connect with any serial terminal, but miniterm comes with pyserial and works pretty well for this.

$ miniterm /dev/ttyACM0 38400