reduce delay for T5, add 4.2"

Author: ladyada

src/Adafruit_EPD.cpp

@@ -295,6 +295,10 @@ void Adafruit_EPD::display(bool sleep) {
 
   powerUp();
 
+#ifdef EPD_DEBUG
+  Serial.println("  Set RAM address");
+#endif
+
   // Set X & Y ram counters
   setRAMAddress(0, 0);
 

src/Adafruit_ThinkInk.h

@@ -9,6 +9,7 @@ typedef enum {
 #include "panels/ThinkInk_213_Tricolor_RW.h"
 #include "panels/ThinkInk_270_Tricolor_C44.h"
 #include "panels/ThinkInk_290_Tricolor_Z10.h"
+#include "panels/ThinkInk_420_Tricolor_RW.h"
 
 #include "panels/ThinkInk_154_Grayscale4_T8.h"
 #include "panels/ThinkInk_213_Grayscale4_T5.h"

src/drivers/Adafruit_IL0373.cpp

@@ -1,7 +1,7 @@
 #include "Adafruit_IL0373.h"
 #include "Adafruit_EPD.h"
 
-#define BUSY_WAIT 500
+#define BUSY_WAIT 100
 
 // clang-format off
 
@@ -92,13 +92,15 @@ Adafruit_IL0373::Adafruit_IL0373(int width, int height, int8_t DC, int8_t RST,
 */
 /**************************************************************************/
 void Adafruit_IL0373::busy_wait(void) {
+  Serial.print("Waiting...");
   if (_busy_pin >= 0) {
     while (!digitalRead(_busy_pin)) {
       delay(10); // wait for busy high
     }
   } else {
     delay(BUSY_WAIT);
   }
+  Serial.println("OK!");
 }
 
 /**************************************************************************/

src/drivers/Adafruit_SSD1619.cpp

@@ -141,8 +141,8 @@ void Adafruit_SSD1619::update() {
   uint8_t buf[1];
 
   // display update sequence
-  buf[0] = 0x40;
-  EPD_command(SSD1619_DISP_CTRL1, buf, 1);
+  //buf[0] = 0x40;
+  //EPD_command(SSD1619_DISP_CTRL1, buf, 1);
   buf[0] = 0xC7;
   EPD_command(SSD1619_DISP_CTRL2, buf, 1);
 

src/panels/ThinkInk_290_Grayscale4_T5.h

@@ -185,7 +185,7 @@ class ThinkInk_290_Grayscale4_T5 : public Adafruit_IL0373 {
       layer_colors[EPD_DARK] = 0b01;
     }
 
-    default_refresh_delay = 1000;
+    default_refresh_delay = 800;
 
     powerDown();
   };

src/panels/ThinkInk_420_Tricolor_RW.h

@@ -0,0 +1,35 @@
+#ifndef _THINKINK_420_TRICOLOR_RW_H
+#define _THINKINK_420_TRICOLOR_RW_H
+
+#include "Adafruit_EPD.h"
+
+class ThinkInk_420_Tricolor_RW : public Adafruit_SSD1619 {
+private:
+public:
+  ThinkInk_420_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_SSD1619(300, 400, SID, SCLK, DC, RST, CS, SRCS, MISO, BUSY){};
+
+  ThinkInk_420_Tricolor_RW(int8_t DC, int8_t RST, int8_t CS, int8_t SRCS,
+                          int8_t BUSY = -1, SPIClass *spi = &SPI)
+      : Adafruit_SSD1619(300, 400, DC, RST, CS, SRCS, BUSY, spi){};
+
+  void begin(thinkinkmode_t mode = THINKINK_TRICOLOR) {
+    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(1);
+    powerDown();
+  };
+};
+
+#endif // _THINKINK_420_TRI