Difference between revisions of "First time ESP32 development with Linux"
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Revision as of 08:31, 18 January 2019
Contents
First time ESP32 deveopment with Linux
Come along and play with an ESP32 micro-controller using C and/or Micropython.
I have about dozen boards people can play with. Come and blink an LED.
What to bring with you
- a computer running Linux
- clones the repositories for the type of development you want to do (see below)
- a microUSB cable.
Where / When
Monday 21st, 11:00 - 12:20, Location to be announced, but is likely to be Café 1894.
What is an ESP32
The ESP32 is an inexpensive micro-controller, but don't let its sub-US$10 price fool you. It is an advanced 32 bit, dual core CPU, with WiFi and Bluetooth, with over half a MB of RAM. It can also run using very little power, making it suitable for battery powered applications.
It might be the perfect device for low-cost edge sensor for your IoT network.
The ESP32 can be easily programmed from your Linux system - most boards need only a microUSB cable.
Programming in C
The standard ESP32 runtime environment is the Open Source ESP-IDF toolchain and SDK.
The GitHub repo can be cloned from https://github.com/espressif/esp-idf
NOTE - this requires python-pip to be installed, as well as a few dependencies. See the README!
It has many examples in the "examples" directory.
Programming in MicroPython
Micropython is a subset of the Python Language, which can be used directly on the ESP32. A utility called "ampy" allows you to update the python scripts on the module.
Ampy can be cloned from https://github.com/adafruit/ampy
If your module does not have micropython installed, or you wish to update the firmware you will need "esptool" (clone from https://github.com/espressif/esptool) and the micropython firmware from http://micropython.org/download
What if I want a board, now or later?
When I buy one board, I usually buy four, so I have plenty spare. If you would like a board to keep, wave a $15 or a $10 note and a cup of coffee.
Boards are available from many suppliers on AliExpress - https://www.aliexpress.com/w/wholesale-esp32.html
A petty overpriced, under-speced board is available retail from Jaycar - https://www.jaycar.co.nz/esp32-main-board-with-wifi-and-bluetooth-communication/p/XC3800
