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|
# OLED Driver
## OLED Supported Hardware
OLED modules using SSD1306 or SH1106 driver ICs, communicating over I2C.
Tested combinations:
| IC driver | Size | Keyboard Platform | Notes |
|-----------|--------|-------------------|--------------------------|
| SSD1306 | 128x32 | AVR | Primary support |
| SSD1306 | 128x64 | AVR | Verified working |
| SSD1306 | 128x32 | ARM | |
| SH1106 | 128x64 | AVR | No rotation or scrolling |
Hardware configurations using ARM-based microcontrollers or different sizes of OLED modules may be compatible, but are untested.
!> Warning: This OLED Driver currently uses the new i2c_master driver from split common code. If your split keyboard uses I2C to communicate between sides, this driver could cause an address conflict (serial is fine). Please contact your keyboard vendor and ask them to migrate to the latest split common code to fix this. In addition, the display timeout system to reduce OLED burn-in also uses split common to detect keypresses, so you will need to implement custom timeout logic for non-split common keyboards.
## Usage
To enable the OLED feature, there are three steps. First, when compiling your keyboard, you'll need to set `OLED_DRIVER_ENABLE=yes` in `rules.mk`, e.g.:
```
OLED_DRIVER_ENABLE = yes
```
This enables the feature and the `OLED_DRIVER_ENABLE` define. Then in your `keymap.c` file, you will need to implement the user task call, e.g:
```C++
#ifdef OLED_DRIVER_ENABLE
void oled_task_user(void) {
// Host Keyboard Layer Status
oled_write_P(PSTR("Layer: "), false);
switch (get_highest_layer(layer_state)) {
case _QWERTY:
oled_write_P(PSTR("Default\n"), false);
break;
case _FN:
oled_write_P(PSTR("FN\n"), false);
break;
case _ADJ:
oled_write_P(PSTR("ADJ\n"), false);
break;
default:
// Or use the write_ln shortcut over adding '\n' to the end of your string
oled_write_ln_P(PSTR("Undefined"), false);
}
// Host Keyboard LED Status
uint8_t led_usb_state = host_keyboard_leds();
oled_write_P(led_usb_state & (1<<USB_LED_NUM_LOCK) ? PSTR("NUMLCK ") : PSTR(" "), false);
oled_write_P(led_usb_state & (1<<USB_LED_CAPS_LOCK) ? PSTR("CAPLCK ") : PSTR(" "), false);
oled_write_P(led_usb_state & (1<<USB_LED_SCROLL_LOCK) ? PSTR("SCRLCK ") : PSTR(" "), false);
}
#endif
```
## Logo Example
|
