Microsoft Azure IoT demo with STMicroelectronics B-L4S5I-IOTOA1 board and e-Ink display

This demo has been derived from Microsoft Azure RTOS example available here and extended to support e-Ink display.
Please refer to the original source code location for prerequisites, environment setup, build and deployment instructions.

1. This repo uses submodules, to clone execute:
   git clone --recursive https://github.com/tdjastrzebski/B-L4S5I-IOT01A_AZURE-RTOS
2. Copy /app/azure_config-template.h to /app/azure_config.h, provide settings like WiFi password, IoT hostname etc.

What you need

• Visual Studio or VS Code with C/C++ tools
• ST B-L4S5I-IOT01A board
• 2.66" Waveshare e-Ink Display (optional)

Visual Studio 2022 complete environment setup

From PowerShell run:

• git clone --recursive https://github.com/tdjastrzebski/B-L4S5I-IOT01A_AZURE-RTOS
• cd .\B-L4S5I-IOT01A_AZURE-RTOS
• iex (iwr -useb https://aka.ms/vcpkg-init.ps1)
• vcpkg activate
• Start-Process devenv .

More info: Embedded Software Development in Visual Studio by Marc Goodner

Note: Visual Studio Preview version is no longer required.

References

2.66" Waveshare eInk Display

• Waveshare user guide
• Waveshare specification
• demo code
• SSD1680Z e-Paper controller
• ST e-Paper driver

LVGL TTF Font Converter

• https://github.com/lvgl/lv_font_conv (font converter as npm package!)
• https://lvgl.io/tools/fontconverter (online font converter)
• install: npm i lv_font_conv -g
• run: lv_font_conv --font ./liberation-mono.regular.ttf --symbols ° --range 0x20-0x7F --size 20 --format lvgl --bpp 1 --no-compress -o ./app/liberation_mono_20.c

Free TTF fonts

• https://github.com/liberationfonts/liberation-fonts (Liberation Mono)
• https://www.1001fonts.com/liberation-mono-font.html
• https://github.com/fcambus/spleen
• https://www.freetype.org/ + https://gitlab.freedesktop.org/freetype
• http://www.angelcode.com/products/bmfont
• https://sourceforge.net/projects/terminus-font (Terminus font)

e-Ink wiring diagram

Note: e-Ink display is optional