display on second i2c bus

This reverts commit 700e40baec.

src/hoverserial.ino

@@ -45,6 +45,8 @@
 #include <Adafruit_SSD1306.h>
 #include <NintendoExtensionCtrl.h> // https://github.com/dmadison/NintendoExtensionCtrl
 
+//            SDA  SCL
+TwoWire Wire3(PC_9, PA_8);
 
 // #include <SoftwareSerial.h>
 // SoftwareSerial HoverSerial(2,3);                 // RX, TX
@@ -89,7 +91,7 @@ int motor_test_direction = 1;
 #define SCREEN_HEIGHT 64        // OLED display height, in pixels
 
 // Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
-Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire);
+Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire3);
 // Connect to a Nunchuk
 Nunchuk nchuk;
 HardwareSerial Serial1(PA_10, PA_9);