I need to use C++ and PlatfomIO for my next ESP32 project. I will be working on an audio application that requires precise timing and so a simpler (No memory management function overhead etc.) language like C++ is my choice. Up to now I have been using micropython for microcontroller applications so will need to change my tool chain to use C++.

In this video I will show how I set up my PlatformIO tool chain and using it for basic microcontroller functionality (LED Blinking, square wave generator and network connection).

00:00 Introduction in the park.
00:54 Install instructions and demonstration – Install Visual Studio Code then add the PlatformIO extension. May take a while.
01:53 Creating my first PlatformIO project. First time you do this can take a while as it installs libraries etc. Next time should be very fast. My setup, I keep my projects under a “c:/projects” folder.
03:49 Look at the folder layout
07:24 Add code to blink LEDS, upload, and check it works. Show some of the platform benefits like hints, code ahead, interactive error reporting.
12:07 Showing GitHub integration.
13:17 Showing another method to load a starter project based on the PlatformIO examples. Show using example code for Wi-Fi access point list
15:32 Update code to make a square wave generator, view on Oscilloscope. Hopefully this shows why , for audio, I need the more controlled timing that c++ gives you (vs Micropython). I still will default to using Micropython unless in most other cases.
19:12 Quick look at plans for next video, audio streaming for my Remote Ham radio

Resources

ESP32 walkie talky project: https://github.com/atomic14/esp32-wal...
ESP32 wireless microphone: https://github.com/atomic14/esp32-hsp-hf
Arduino audio toolkit: https://github.com/pschatzmann/arduin... and    • #419 ESP32 Audio Tutorial with lots o...  
Installing PlatformIO (There are a few YouTube videos about this – I liked this one) :    • PlatformIO - A True Alternative to th...  
PlatformIO: https://platformio.org/
Visual Studio Code: https://code.visualstudio.com/