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--- composants:i2c_oled_ssd1306 [2019/08/13 20:32] – mh
+++ composants:i2c_oled_ssd1306 [2025/06/02 21:23] (current) – external edit 127.0.0.1
@@ Line 8: / Line 8: @@
   *5V ready
+  *Can use I2C (two wires) or SPI communication
 ===== Usage =====
@@ Line 15: / Line 16: @@
 The 128x32 uses address 0x3C
+If you are connecting to SDA/SCL using I2C connect pin SDA to UNO A4 and SCL to UNO A5 (default pins, respectively 20 and 21 on a Mega)
+++++ Basic Arduino text example |
+<code c>
+#include <SPI.h>
+#include <Wire.h>
+#include <Adafruit_GFX.h>
+#include <Adafruit_SSD1306.h>
+#define SCREEN_WIDTH 128 // OLED display width, in pixels
+#define SCREEN_HEIGHT 32 // OLED display height, in pixels
+// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
+#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino reset pin)
+Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
+void setup() {
+  Serial.begin(9600);
+  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
+  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3C for 128x32
+    Serial.println(F("SSD1306 allocation failed"));
+    for(;;); // Don't proceed, loop forever
+  }
+}
+void loop() {
+  writeText();
+}
+void writeText(void) {
+  display.clearDisplay();
+  display.setTextSize(1);             // Normal 1:1 pixel scale
+  display.setTextColor(WHITE);        // Draw white text
+  display.setCursor(0, 0);            // Start at top-left corner
+  display.println(F("Hello, world!"));
+  display.display();
+}
+</code>
+++++
 ===== Ressources =====