First init.

libraries/Adafruit_seesaw_Library/Adafruit_TFTShield18.h

@@ -0,0 +1,60 @@
+#ifndef _TFT_SHIELD_18_H
+#define _TFT_SHIELD_18_H
+
+#include "Adafruit_seesaw.h"
+
+#define TFTSHIELD_ADDR 0x2E
+#define TFTSHIELD_RESET_PIN 3
+
+#define TFTSHIELD_BACKLIGHT_ON 0xFFFF
+#define TFTSHIELD_BACKLIGHT_OFF 0x0000
+
+#define TFTSHIELD_BUTTON_UP_PIN 5
+#define TFTSHIELD_BUTTON_UP (1UL << TFTSHIELD_BUTTON_UP_PIN)
+
+#define TFTSHIELD_BUTTON_DOWN_PIN 8
+#define TFTSHIELD_BUTTON_DOWN (1UL << TFTSHIELD_BUTTON_DOWN_PIN)
+
+#define TFTSHIELD_BUTTON_LEFT_PIN 6
+#define TFTSHIELD_BUTTON_LEFT (1UL << TFTSHIELD_BUTTON_LEFT_PIN)
+
+#define TFTSHIELD_BUTTON_RIGHT_PIN 9
+#define TFTSHIELD_BUTTON_RIGHT (1UL << TFTSHIELD_BUTTON_RIGHT_PIN)
+
+#define TFTSHIELD_BUTTON_IN_PIN 7
+#define TFTSHIELD_BUTTON_IN (1UL << TFTSHIELD_BUTTON_IN_PIN)
+
+#define TFTSHIELD_BUTTON_1_PIN 10
+#define TFTSHIELD_BUTTON_1 (1UL << TFTSHIELD_BUTTON_1_PIN)
+
+#define TFTSHIELD_BUTTON_2_PIN 11
+#define TFTSHIELD_BUTTON_2 (1UL << TFTSHIELD_BUTTON_2_PIN)
+
+#define TFTSHIELD_BUTTON_3_PIN 14
+#define TFTSHIELD_BUTTON_3 (1UL << TFTSHIELD_BUTTON_3_PIN)
+
+#define TFTSHIELD_BUTTON_ALL                                                   \
+  (TFTSHIELD_BUTTON_UP | TFTSHIELD_BUTTON_DOWN | TFTSHIELD_BUTTON_LEFT |       \
+   TFTSHIELD_BUTTON_RIGHT | TFTSHIELD_BUTTON_IN | TFTSHIELD_BUTTON_1 |         \
+   TFTSHIELD_BUTTON_2 | TFTSHIELD_BUTTON_3)
+
+/**************************************************************************/
+/*!
+    @brief  Class that stores state and functions for interacting with 1.8" tft
+   shield variant of seesaw helper IC
+*/
+/**************************************************************************/
+class Adafruit_TFTShield18 : public Adafruit_seesaw {
+public:
+  Adafruit_TFTShield18(){};
+  ~Adafruit_TFTShield18(){};
+
+  bool begin(uint8_t addr = TFTSHIELD_ADDR, int8_t flow = -1);
+
+  void setBacklight(uint16_t value);
+  void setBacklightFreq(uint16_t freq);
+  void tftReset(bool rst = true);
+  uint32_t readButtons();
+};
+
+#endif