First init.

libraries/Adafruit_seesaw_Library/examples/Mini_I2C_Gamepad_QT/Mini_I2C_Gamepad_QT.ino

@@ -0,0 +1,91 @@
+#include "Adafruit_seesaw.h"
+
+Adafruit_seesaw ss;
+
+#define BUTTON_X         6
+#define BUTTON_Y         2
+#define BUTTON_A         5
+#define BUTTON_B         1
+#define BUTTON_SELECT    0
+#define BUTTON_START    16
+uint32_t button_mask = (1UL << BUTTON_X) | (1UL << BUTTON_Y) | (1UL << BUTTON_START) |
+                       (1UL << BUTTON_A) | (1UL << BUTTON_B) | (1UL << BUTTON_SELECT);
+
+//#define IRQ_PIN   5
+
+
+void setup() {
+  Serial.begin(115200);
+
+  while(!Serial) {
+    delay(10);
+  }
+
+  Serial.println("Gamepad QT example!");
+  
+  if(!ss.begin(0x50)){
+    Serial.println("ERROR! seesaw not found");
+    while(1) delay(1);
+  }
+  Serial.println("seesaw started");
+  uint32_t version = ((ss.getVersion() >> 16) & 0xFFFF);
+  if (version != 5743) {
+    Serial.print("Wrong firmware loaded? ");
+    Serial.println(version);
+    while(1) delay(10);
+  }
+  Serial.println("Found Product 5743");
+  
+  ss.pinModeBulk(button_mask, INPUT_PULLUP);
+  ss.setGPIOInterrupts(button_mask, 1);
+
+#if defined(IRQ_PIN)
+  pinMode(IRQ_PIN, INPUT);
+#endif
+}
+
+
+int last_x = 0, last_y = 0;
+
+void loop() {
+  delay(10); // delay in loop to slow serial output
+  
+  // Reverse x/y values to match joystick orientation
+  int x = 1023 - ss.analogRead(14);
+  int y = 1023 - ss.analogRead(15);
+  
+  if ( (abs(x - last_x) > 3)  ||  (abs(y - last_y) > 3)) {
+    Serial.print("x: "); Serial.print(x); Serial.print(", "); Serial.print("y: "); Serial.println(y);
+    last_x = x;
+    last_y = y;
+  }
+
+#if defined(IRQ_PIN)
+  if(!digitalRead(IRQ_PIN)) {
+    return;
+  }
+#endif
+
+    uint32_t buttons = ss.digitalReadBulk(button_mask);
+
+    //Serial.println(buttons, BIN);
+
+    if (! (buttons & (1UL << BUTTON_A))) {
+      Serial.println("Button A pressed");
+    }
+    if (! (buttons & (1UL << BUTTON_B))) {
+      Serial.println("Button B pressed");
+    }
+    if (! (buttons & (1UL << BUTTON_Y))) {
+      Serial.println("Button Y pressed");
+    }
+    if (! (buttons & (1UL << BUTTON_X))) {
+      Serial.println("Button X pressed");
+    }
+    if (! (buttons & (1UL << BUTTON_SELECT))) {
+      Serial.println("Button SELECT pressed");
+    }
+    if (! (buttons & (1UL << BUTTON_START))) {
+      Serial.println("Button START pressed");
+    }
+}