Add support for OLED screen at pins 17 & 18 (#221)

thorrak · Jan 9, 2023 · 0658b25 · 0658b25
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diff --git a/docs/source/changelog.rst b/docs/source/changelog.rst
@@ -10,6 +10,7 @@ v1.2.0 - Jan 9, 2023 - Fix OLED & Refactor LCD Code
 - Refactor LCD code to combine "D32 TFT" and "ESPI TFT" code
 - Replace existing M5 libraries with (existing) ESPI TFT library
 - Add new "User Target" data destination
+- Add support for OLED display at pins 17 & 18
 
 
 v1.1.3 - Aug 18, 2022 - Fix WiFi Manager

diff --git a/src/bridge_lcd.cpp b/src/bridge_lcd.cpp
@@ -79,7 +79,17 @@ void bridge_lcd::init() {
             oled_display = new SSD1306Wire(0x3c, 4, 15);
         } else {
             digitalWrite(16, LOW);                    // We weren't able to find the TTGO board, so reset the pin
-            oled_display = new SSD1306Wire(0x3c, 21, 22); // ... and just default to the "sleeve" configuration
+
+            pinMode(21, OUTPUT); 
+            digitalWrite(21, LOW); // Set GPIO16 low to reset OLED 
+            delay(50); 
+            digitalWrite(21, HIGH); // While OLED is running, must set GPIO16 in high 
+            if (i2c_device_at_address(0x3c, 17, 18)) {
+                oled_display = new SSD1306Wire(0x3c, 17, 18);
+            } else {
+                digitalWrite(21, LOW);                    // We weren't able to find the TTGO board, so reset the pin
+                oled_display = new SSD1306Wire(0x3c, 21, 22); // ... and just default to the "sleeve" configuration
+            }
         }
     }