/oled_96_nrf52

A simple C library (NRF52) for drawing text and graphics on SSD1306/SH1106 OLED displays

Primary LanguageC

OLED_96 (NRF52)

OLED_96 is a simple C library for working with SSD1306/SH1106 OLED displays when connected to the I2C bus. Tested on various ARM SBCs and Arduinos. The idea is to provide a simple interface for C programmers to make use of those low-cost OLED displays without having to read the data sheet or figure out I2C programming.

Written by Larry Bank Project started 1/15/2017 bitbank@pobox.com

How to use

To build example.c for nrf52832 you need:

  1. Change the SDK_ROOT to your nRF5_SDK path.
  2. Change if needed flash program in Makefile, the default option is ST-Link (openocd) 
    openocd -f interface/stlink.cfg -f target/nrf52.cfg -c 'init_reset halt; program $(OUTPUT_DIRECTORY)/nrf52832_xxaa.hex verify; reset; exit'
    If you use J-Link (openocd) you need to change it to 
     openocd -f interface/jlink.cfg -c "transport select swd" -f target/nrf52.cfg -c 'init_reset halt; program $(OUTPUT_DIRECTORY)/nrf52832_xxaa.hex verify; reset; exit'
  3. Run make flash to build and flash.

The default parameters:

  • OLED address 0x3c
  • SDA_PIN 26 (P0.26)
  • SCL_PIN 27 (P0.27)

These values can be changed in the oled96.h:

#define SCL_PIN 27
#define SDA_PIN 26

#define I2C_ADDR 0x3c

Latest Changes:

  • Change the library to support NRF52 MCUs

Features:

  • Efficient individual pixel drawing
  • Small, Medium and large fonts (6x8, 8x8, 16x32)
  • Invert and flip 180 options (entire display)
  • Optional inverted text
  • Brightness control
  • Support for 64x32, 128x32, 128x64 and 132x64 (SH1106) displays
  • Line draw function

If you find this code useful, please consider buying me a cup of coffee

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