arduinoprojects

git clone https://git.tarina.org/arduinoprojects
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OLED_featherwing.ino (2053B)

      1 #include <SPI.h>
      2 #include <Wire.h>
      3 #include <Adafruit_GFX.h>
      4 #include <Adafruit_SSD1306.h>
      5 
      6 Adafruit_SSD1306 display = Adafruit_SSD1306(128, 32, &Wire);
      7 
      8 // OLED FeatherWing buttons map to different pins depending on board:
      9 #if defined(ESP8266)
     10   #define BUTTON_A  0
     11   #define BUTTON_B 16
     12   #define BUTTON_C  2
     13 #elif defined(ESP32)
     14   #define BUTTON_A 15
     15   #define BUTTON_B 32
     16   #define BUTTON_C 14
     17 #elif defined(ARDUINO_STM32_FEATHER)
     18   #define BUTTON_A PA15
     19   #define BUTTON_B PC7
     20   #define BUTTON_C PC5
     21 #elif defined(TEENSYDUINO)
     22   #define BUTTON_A  4
     23   #define BUTTON_B  3
     24   #define BUTTON_C  8
     25 #elif defined(ARDUINO_FEATHER52832)
     26   #define BUTTON_A 31
     27   #define BUTTON_B 30
     28   #define BUTTON_C 27
     29 #else // 32u4, M0, M4, nrf52840 and 328p
     30   #define BUTTON_A  9
     31   #define BUTTON_B  6
     32   #define BUTTON_C  5
     33 #endif
     34 
     35 void setup() {
     36   Serial.begin(9600);
     37 
     38   Serial.println("OLED FeatherWing test");
     39   // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
     40   display.begin(SSD1306_SWITCHCAPVCC, 0x3C); // Address 0x3C for 128x32
     41 
     42   Serial.println("OLED begun");
     43 
     44   // Show image buffer on the display hardware.
     45   // Since the buffer is intialized with an Adafruit splashscreen
     46   // internally, this will display the splashscreen.
     47   display.display();
     48   delay(1000);
     49 
     50   // Clear the buffer.
     51   display.clearDisplay();
     52   display.display();
     53 
     54   Serial.println("IO test");
     55 
     56   pinMode(BUTTON_A, INPUT_PULLUP);
     57   pinMode(BUTTON_B, INPUT_PULLUP);
     58   pinMode(BUTTON_C, INPUT_PULLUP);
     59 
     60   // text display tests
     61   display.setTextSize(1);
     62   display.setTextColor(SSD1306_WHITE);
     63   display.setCursor(0,0);
     64   display.print("Connecting to SSID\n'adafruit':");
     65   display.print("connected!");
     66   display.println("IP: 10.0.1.23");
     67   display.println("Sending val #0");
     68   display.setCursor(0,0);
     69   display.display(); // actually display all of the above
     70 }
     71 
     72 void loop() {
     73   if(!digitalRead(BUTTON_A)) display.print("A");
     74   if(!digitalRead(BUTTON_B)) display.print("B");
     75   if(!digitalRead(BUTTON_C)) display.print("C");
     76   delay(10);
     77   yield();
     78   display.display();
     79 }