Ssd1306 – Writing text

To write text onto the display, you must define the text size, color, and the starting coordinate from which the text will be drawn onto the display.

void loop() {
  delay(1000);
  // Clear the last image shown on screen
  display.clearDisplay();
  // Normal 1:1 pixel scale
  display.setTextSize(1);             
  // Draw white text 
  display.setTextColor(SSD1306_WHITE);
  // Start at top-left corner
  display.setCursor(0, 0);
  // Message we want to display             
  String message = "Hello World!";
  // Inform the display of the text you want to print
  display.print(message);
  // Display the message
  display.display();
}

display.clearDisplay()

Clears contents of display buffer (sets all pixels to off).

Returns value: None

⚠️

Because the clearDisplay() function only clears the buffer, it has no immediate effect on the screen. The display() function must still be called.

display.setTextColor(uint16_t c, uint16_t bg)

Set text font color with custom background color

Returns value: None

Function parameters:

Type	Name	Description
int16_t	c	What color the text will be
int16_t	bg	Optional, what color the background will be, if not set then it is transparent

display.setCursor(int16_t x, int16_t y)

Sets text cursor location

Returns value: None

Function parameters:

Type	Name	Description
int16_t	x	x coordinate of cursor
int16_t	y	y coordinate of cursor

display.print(const char* message)

Stores the given message into buffer

Returns value: None

Function parameters:

Type	Name	Description
const char*	message	text that will be shown on display