First init.

libraries/Adafruit_seesaw_Library/Adafruit_NeoKey_1x4.h

@@ -0,0 +1,96 @@
+#ifndef _NEOKEY_1X4_H
+#define _NEOKEY_1X4_H
+
+#include "Adafruit_seesaw.h"
+#include "seesaw_neopixel.h"
+#include <Arduino.h>
+
+#define NEOKEY_1X4_ADDR 0x30
+
+#define NEOKEY_1X4_NEOPIN 3
+#define NEOKEY_1X4_BUTTONA 4
+#define NEOKEY_1X4_BUTTONB 5
+#define NEOKEY_1X4_BUTTONC 6
+#define NEOKEY_1X4_BUTTOND 7
+#define NEOKEY_1X4_BUTTONMASK ((1 << 4) | (1 << 5) | (1 << 6) | (1 << 7))
+
+#define NEOKEY_1X4_ROWS 1
+#define NEOKEY_1X4_COLS 4
+#define NEOKEY_1X4_KEYS (NEOKEY_1X4_ROWS * NEOKEY_1X4_COLS)
+
+#define NEOKEY_1X4_MAX_CALLBACKS 32
+
+/* NEOKEY_1X4_KEY depends on PCB routing */
+// #define NEOKEY_1X4_KEY(x) (((x) / 4) * 8 + ((x) % 4))
+#define NEOKEY_1X4_KEY(x) (((x) / 8) * 4 + ((x) % 8))
+
+#define NEOKEY_1X4_X(k) ((k) % 4)
+#define NEOKEY_1X4_Y(k) ((k) / 4)
+
+#define NEOKEY_1X4_XY(x, y) ((y)*NEOKEY_1X4_ROWS + (x))
+
+typedef void (*NeoKey1x4Callback)(keyEvent evt);
+
+/**************************************************************************/
+/*!
+    @brief  Class that stores state and functions for interacting with the
+   seesaw NeoKey module
+*/
+/**************************************************************************/
+class Adafruit_NeoKey_1x4 : public Adafruit_seesaw {
+public:
+  Adafruit_NeoKey_1x4(uint8_t addr = NEOKEY_1X4_ADDR, TwoWire *i2c_bus = &Wire);
+  ~Adafruit_NeoKey_1x4(){};
+
+  bool begin(uint8_t addr = NEOKEY_1X4_ADDR, int8_t flow = -1);
+
+  void registerCallback(uint8_t key, NeoKey1x4Callback (*cb)(keyEvent));
+  void unregisterCallback(uint8_t key);
+
+  uint8_t read(void);
+
+  seesaw_NeoPixel pixels; ///< the onboard neopixel matrix
+
+  friend class Adafruit_MultiNeoKey1x4; ///< for allowing use of protected
+                                        ///< methods by aggregate class
+
+protected:
+  uint8_t last_buttons = 0; ///< The last reading for the buttons
+  uint8_t _addr;            ///< the I2C address of this board
+  NeoKey1x4Callback (*_callbacks[NEOKEY_1X4_KEYS])(
+      keyEvent); ///< the array of callback functions
+};
+
+/**************************************************************************/
+/*!
+    @brief  Class that stores state and functions for interacting with multiple
+   neotrellis boards
+*/
+/**************************************************************************/
+class Adafruit_MultiNeoKey1x4 {
+public:
+  Adafruit_MultiNeoKey1x4(Adafruit_NeoKey_1x4 *neokeys, uint8_t rows,
+                          uint8_t cols);
+  ~Adafruit_MultiNeoKey1x4(){};
+
+  bool begin();
+
+  void registerCallback(uint16_t num, NeoKey1x4Callback (*cb)(keyEvent));
+  void registerCallback(uint8_t x, uint8_t y,
+                        NeoKey1x4Callback (*cb)(keyEvent));
+  void unregisterCallback(uint16_t num);
+  void unregisterCallback(uint8_t x, uint8_t y);
+
+  void setPixelColor(uint8_t x, uint8_t y, uint32_t color);
+  void setPixelColor(uint16_t num, uint32_t color);
+  void show();
+
+  void read();
+
+protected:
+  uint8_t _rows; ///< the number of trellis boards in the Y direction
+  uint8_t _cols; ///< the number of trellis boards in the X direction
+  Adafruit_NeoKey_1x4 *_neokeys; ///< a multidimensional array of neokey objects
+};
+
+#endif