add 1.54" tricolor RW type panel, clarify tricolor demo pinout

Author: ladyada

examples/ThinkInk_tricolor/ThinkInk_tricolor.ino

@@ -9,18 +9,20 @@
 
 #include "Adafruit_ThinkInk.h"
 
-#define EPD_CS      9
-#define EPD_DC      10
-#define SRAM_CS     6
-#define EPD_RESET   5 // can set to -1 and share with microcontroller Reset!
-#define EPD_BUSY    7 // can set to -1 to not use a pin (will wait a fixed delay)
+#define EPD_DC      10 // can be any pin, but required!
+#define EPD_CS      9  // can be any pin, but required!
+#define EPD_BUSY    7  // can set to -1 to not use a pin (will wait a fixed delay)
+#define SRAM_CS     6  // can set to -1 to not use a pin (uses a lot of RAM!)
+#define EPD_RESET   5  // can set to -1 and share with chip Reset (can't deep sleep)
 
 //ThinkInk_154_Tricolor_Z17 display(EPD_DC, EPD_RESET, EPD_CS, SRAM_CS, EPD_BUSY);
+//ThinkInk_154_Tricolor_RW display(EPD_DC, EPD_RESET, EPD_CS, SRAM_CS, EPD_BUSY);
 //ThinkInk_213_Tricolor_RW display(EPD_DC, EPD_RESET, EPD_CS, SRAM_CS, EPD_BUSY);
 //ThinkInk_213_Tricolor_Z16 display(EPD_DC, EPD_RESET, EPD_CS, SRAM_CS, EPD_BUSY);
 //ThinkInk_270_Tricolor_C44 display(EPD_DC, EPD_RESET, EPD_CS, SRAM_CS, EPD_BUSY);
-//ThinkInk_290_Tricolor_Z10 display(EPD_DC, EPD_RESET, EPD_CS, SRAM_CS, EPD_BUSY);
-ThinkInk_420_Tricolor_RW display(EPD_DC, EPD_RESET, EPD_CS, SRAM_CS, EPD_BUSY);
+// 2.9" Tricolor Featherwing or Breakout:
+ThinkInk_290_Tricolor_Z10 display(EPD_DC, EPD_RESET, EPD_CS, SRAM_CS, EPD_BUSY);
+//ThinkInk_420_Tricolor_RW display(EPD_DC, EPD_RESET, EPD_CS, SRAM_CS, EPD_BUSY);
 
 void setup() {
   Serial.begin(115200);

src/Adafruit_ThinkInk.h

@@ -5,6 +5,7 @@ typedef enum {
 } thinkinkmode_t;
 
 #include "panels/ThinkInk_154_Tricolor_Z17.h"
+#include "panels/ThinkInk_154_Tricolor_RW.h"
 #include "panels/ThinkInk_213_Tricolor_RW.h"
 #include "panels/ThinkInk_213_Tricolor_Z16.h"
 #include "panels/ThinkInk_270_Tricolor_C44.h"

src/panels/ThinkInk_154_Tricolor_RW.h

@@ -0,0 +1,36 @@
+#ifndef _THINKINK_154_TRICOLOR_RW_H
+#define _THINKINK_154_TRICOLOR_RW_H
+
+#include "Adafruit_EPD.h"
+
+class ThinkInk_154_Tricolor_RW : public Adafruit_SSD1680 {
+private:
+public:
+  ThinkInk_154_Tricolor_RW(int8_t SID, int8_t SCLK, int8_t DC, int8_t RST,
+                           int8_t CS, int8_t SRCS, int8_t MISO,
+                           int8_t BUSY = -1)
+      : Adafruit_SSD1680(250, 152, SID, SCLK, DC, RST, CS, SRCS, MISO, BUSY){};
+
+  ThinkInk_154_Tricolor_RW(int8_t DC, int8_t RST, int8_t CS, int8_t SRCS,
+                           int8_t BUSY = -1, SPIClass *spi = &SPI)
+      : Adafruit_SSD1680(152, 152, DC, RST, CS, SRCS, BUSY, spi){};
+
+  void begin(thinkinkmode_t mode = THINKINK_MONO) {
+    Adafruit_EPD::begin(true);
+    setBlackBuffer(0, true);
+    setColorBuffer(1, false);
+
+    layer_colors[EPD_WHITE] = 0b00;
+    layer_colors[EPD_BLACK] = 0b01;
+    layer_colors[EPD_RED] = 0b10;
+    layer_colors[EPD_GRAY] = 0b10;
+    layer_colors[EPD_LIGHT] = 0b00;
+    layer_colors[EPD_DARK] = 0b01;
+
+    default_refresh_delay = 13000;
+    setRotation(3);
+    powerDown();
+  };
+};
+
+#endif // _THINKINK_154_TRI