This post describes my software and scripting pipeline for compiling hex images for the teensy and uploading them to teensies. If you’re playing around with arduino or a teensy for the first time, I would not recommend doing this. Instead, follow PJRC’s instructions on using teensyduino.
I went with my own pipeline for a few reasons:
- the arduino IDE is ugly and does not have many features
- I want compile and upload my hex files the same way every time
- Since I often have multiple teensies plugged into a computer at a time, I want to be able target specific teensies by serial number
- I don’t want to have to memorize different steps based on whether I’m programming in python, arduino or c
- I want to be able to do all of the above with one command.
All components in this pipeline have been compiled for both Windows and Linux, so I have been able to follow the same pipeline on both operating systems.
My pipeline requires the following programs and binaries to be installed on your system for operation:
For arduino code compilation:
- Arduino Software IDE, creates the directory structure, and includes the arduino-builder, used for compiling the hex files.
- Teensyduino beta, installs the teensy libraries in the arduino folder, as well as the binaries teensy (the little window that pops up when you upload hex files) to Arduino folder/hardware/tools/. If you are using the latest version of Arduino, which I would strongly advise, make sure you download the teensyduino beta instead of the version posted on the main PJRC website.
For C/C++ code and MicroPython:
For MicroPython code compilation:
For all code:
- TyQt is a GUI that offers a few more debug options than the Arduino IDE. It also allows teensies to be targeted by serial number.
pyteensy, my python scripts for compilation/uploading hexs. To install, run:
git clone email@example.com:CatherineH/teensy-python-makefile.git cd teensy-python-makefile python setup.py install
Make sure the following directories are added to your PATH variable:
- $arduino folder$
- $arduino folder$/hardware/tools
- $tyQt folder$/ty/build/$your OS$
on Windows, the arduino folder is usually under C:\Program Files\Arduino.
There are two ways to use pyteensy. You can either import it as a module, for example, if you want to encorporate the functionality into your own scripts:
from pyteensy import list_devices latest_hex = find_hexes() teensies = list_devices() for teensy in teensies: upload_latest(teensy, latest_hex)
or, you can use it from the command line:
cd teensy-python-makefile pyteensy -u -d teensyLC -p test_project_arduino
The project test_project_arduino in the teensy-python-makefile repository contains three common pieces of functionality: digital writing, ADC read, and USB and hardware serial. If it compiles and uploads, then most functionality will work.