SSD1309 OLED With Toit
There's been a Toit driver for the ubiquitous SSD1306 OLED around for a while, but some OLEDs are controlled by the SSD1309 instead. In this instructable I'd like to show how to interface one of these using Toit and a 128x64 pixel OLED.
Supplies
- ESP32 dev kit. I like this one since it has a narrower form factor and is therefore better suited for breadboards. The form factor leaves breadboard-space on both sides of the dev kit for connections.
- SSD1309 OLED.
Hooking Up the Hardware
Connecting the HW is trivial. Here's where the Huzzah GPIO should go:
- GPIO 22 - SCL
- GPIO 23 - SDA
- GPIO 25 - RST
- GPIO 32 - CS
- GPIO 14 - DC
Apart from this we power our OLED with 5V from the battery input (Pin labelled BAT on the Huzzah) and finally we connect GND.
Importing Required Toit Packages
The Toit package manager contains drivers for the SSD1306. You need to install the required packages by running
$ toit pkg install github.com/toitware/toit-ssd1306
$ toit pkg install github.com/toitware/toit-pixel-display
This should import the required drivers and allow you to import them into your Toit code.
The Toit Code
Toit code to demonstrate both how to add graphical content and text to the OLED can be found in this repository: