feat(board-ssd1306/oled-esp32): ssd1306 OLED display test

Author: urish

.github/workflows/wokwi-test.yml

@@ -6,7 +6,7 @@ on:
     branches:
       - main
   schedule:
-    - cron: "0 12 * * *"
+    - cron: '0 12 * * *'
 
 jobs:
   test:
@@ -15,6 +15,9 @@ jobs:
       fail-fast: false
       matrix:
         test:
+          - name: oled-esp32
+            path: board-ssd1306/oled-esp32
+            scenario: ssd1306.test.yaml
           - name: dht22-uno
             path: wokwi-dht22/dht22-uno
             scenario: dht22.test.yaml

board-ssd1306/oled-esp32/diagram.json

@@ -0,0 +1,24 @@
+{
+  "version": 1,
+  "author": "Wokwi",
+  "editor": "wokwi",
+  "parts": [
+    { "type": "board-esp32-devkit-c-v4", "id": "esp32", "top": 0, "left": 0, "attrs": {} },
+    {
+      "type": "board-ssd1306",
+      "id": "oled1",
+      "top": 102.7,
+      "left": 203.5,
+      "attrs": { "width": "128", "height": "64" }
+    }
+  ],
+  "connections": [
+    [ "esp32:TX", "$serialMonitor:RX", "", [] ],
+    [ "esp32:RX", "$serialMonitor:TX", "", [] ],
+    [ "esp32:21", "oled1:SDA", "green", [ "v0", "h0" ] ],
+    [ "esp32:22", "oled1:SCL", "yellow", [ "v0", "h0" ] ],
+    [ "esp32:GND.1", "oled1:GND", "black", [ "h-23.81", "v86.4", "h220.42", "v-144", "h40.45" ] ],
+    [ "esp32:3V3", "oled1:VCC", "red", [ "v-38.4", "h246.51" ] ]
+  ],
+  "dependencies": {}
+}

board-ssd1306/oled-esp32/platformio.ini

@@ -0,0 +1,9 @@
+[env:esp32]
+platform = espressif32
+board = esp32dev
+framework = arduino
+lib_deps =
+    adafruit/Adafruit SSD1306@^2.5.7
+    adafruit/Adafruit GFX Library@^1.11.5
+    adafruit/Adafruit BusIO@^1.14.1
+build_flags = -D ARDUINO_ARCH_ESP32 

board-ssd1306/oled-esp32/screenshots/counter-0.png

@@ -0,0 +1,43 @@
+#include <Wire.h>
+#include <Adafruit_GFX.h>
+#include <Adafruit_SSD1306.h>
+
+#define SCREEN_WIDTH 128
+#define SCREEN_HEIGHT 64
+#define OLED_RESET -1
+#define SCREEN_ADDRESS 0x3C
+
+Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
+
+void setup() {
+  Serial.begin(115200);
+  Wire.begin(21, 22); // SDA, SCL pins for ESP32
+
+  if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
+    Serial.println(F("SSD1306 allocation failed"));
+    for(;;);
+  }
+
+  display.clearDisplay();
+  display.setTextSize(1);
+  display.setTextColor(SSD1306_WHITE);
+  display.setCursor(0, 0);
+  display.println("SSD1306 Test");
+  display.println("Hello World!");
+  display.display();
+  Serial.println("Display initialized");
+}
+
+void loop() {
+  // Add some animation
+  static int counter = 0;
+  display.clearDisplay();
+  display.setCursor(0, 0);
+  display.print("Counter: ");
+  display.println(counter);
+  display.display();
+  Serial.print("Counter: ");
+  Serial.println(counter);
+  counter++;
+  delay(1000);
+}

board-ssd1306/oled-esp32/screenshots/counter-1.png

@@ -0,0 +1,24 @@
+name: 'ESP32 SSD1306 OLED Test'
+version: 1
+author: 'Test Author'
+
+steps:
+  - wait-serial: 'Display initialized'
+  - delay: 100ms
+
+  - wait-serial: 'Counter: 0'
+  - take-screenshot:
+      part-id: 'oled1'
+      compare-with: 'screenshots/counter-0.png'
+  - delay: 1000ms
+
+  - wait-serial: 'Counter: 1'
+  - take-screenshot:
+      part-id: 'oled1'
+      compare-with: 'screenshots/counter-1.png'
+  - delay: 1000ms
+
+  - wait-serial: 'Counter: 2' 
+  - take-screenshot:
+      part-id: 'oled1'
+      compare-with: 'screenshots/counter-2.png'

board-ssd1306/oled-esp32/screenshots/counter-2.png

@@ -0,0 +1,5 @@
+[wokwi]
+version = 1
+firmware = '.pio/build/esp32/firmware.elf' 
+elf = '.pio/build/esp32/firmware.elf'
+