add 7.5" and fix UC8179 begin

src/Adafruit_EPD.cpp

@@ -252,7 +252,7 @@ void Adafruit_EPD::drawPixel(int16_t x, int16_t y, uint16_t color) {
   // Serial.printf("(%d, %d) : ", x, y);
 
   uint16_t addr;
-  if (_data_entry_mode == THINKING_UC8179) {
+  if (_data_entry_mode == THINKINK_UC8179) {
     addr = ((uint32_t)(HEIGHT - 1 - y) * (uint32_t)WIDTH + x) / 8;
   } else { //  THINKINK_STANDARD default!
     addr = ((uint32_t)(WIDTH - 1 - x) * (uint32_t)_HEIGHT + y) / 8;
@@ -276,7 +276,7 @@ void Adafruit_EPD::drawPixel(int16_t x, int16_t y, uint16_t color) {
   color_bit = layer_colors[color] & 0x2;
 
   uint8_t bit_idx;
-  if (_data_entry_mode == THINKING_UC8179) {
+  if (_data_entry_mode == THINKINK_UC8179) {
     bit_idx = x;
   } else { //  THINKINK_STANDARD default!
     bit_idx = y;

src/Adafruit_EPD.h

@@ -46,8 +46,8 @@ enum {
 };
 
 typedef enum {
-  THINKINK_STANDARD, // 99% of panels use this setup!
-  THINKING_UC8179,   // .... except for UC8179?
+  THINKINK_STANDARD = 0, // 99% of panels use this setup!
+  THINKINK_UC8179 = 1,   // .... except for UC8179?
 } thinkink_sramentrymode_t;
 
 typedef enum {

src/Adafruit_ThinkInk.h

@@ -46,5 +46,6 @@
 #include "panels/ThinkInk_583_Mono_AAAMFGN.h"
 #include "panels/ThinkInk_583_Tricolor_AABMFGNR.h"
 #include "panels/ThinkInk_750_Tricolor_AABMFGNR.h"
+#include "panels/ThinkInk_750_Mono_AAAMFGN.h"
 
 #endif // _ADAFRUIT_THINKINK_H_

src/drivers/Adafruit_UC8179.cpp

@@ -137,7 +137,7 @@ void Adafruit_UC8179::busy_wait(void) {
 /**************************************************************************/
 void Adafruit_UC8179::begin(bool reset) {
   // UUUUGH, SRAM is not organized the same way for this chip?
-  _data_entry_mode = THINKING_UC8179;
+  _data_entry_mode = THINKINK_UC8179;
 
   Adafruit_EPD::begin(reset);
   setBlackBuffer(0, true);  // black defaults to inverted

src/panels/ThinkInk_583_Mono_AAAMFGN.h

@@ -53,7 +53,7 @@ class ThinkInk_583_Mono_AAAMFGN : public Adafruit_UC8179 {
       : Adafruit_UC8179(648, 480, DC, RST, CS, SRCS, BUSY, spi){};
 
   void begin(thinkinkmode_t mode = THINKINK_MONO) {
-    Adafruit_EPD::begin(true);
+    Adafruit_UC8179::begin(true);
     setColorBuffer(1, false); // layer 1 uninverted
     setBlackBuffer(1, false); // only one buffer
 

src/panels/ThinkInk_750_Mono_AAAMFGN.h

@@ -0,0 +1,75 @@
+#ifndef _THINKINK_750_MONO_AAAMFGN_H
+#define _THINKINK_750_MONO_AAAMFGN_H
+
+#include "Adafruit_EPD.h"
+
+const uint8_t uc8179_750_mono_init_code[]{UC8179_POWERSETTING,
+                                      4,
+                                      0x07, // VGH=20V
+                                      0x07, // VGL=-20V
+                                      0x3F, // VDH=15V
+                                      0x3F, // VDL=-15V
+
+                                      UC8179_POWERON,
+                                      0,
+                                      0xFF,
+                                      100, // busy wait
+
+                                      UC8179_PANELSETTING,
+                                      1,
+                                      0b010111, // BW OTP LUT
+
+                                      UC8179_TRES,
+                                      4,
+                                      0x03,
+                                      0x20,
+                                      0x01,
+                                      0xE0,
+
+                                      UC8179_DUALSPI,
+                                      1,
+                                      0x00,
+
+                                      UC8179_WRITE_VCOM,
+                                      2,
+                                      0x10,
+                                      0x07,
+                                      UC8179_TCON,
+                                      1,
+                                      0x22,
+
+                                      0xFE};
+
+class ThinkInk_750_Mono_AAAMFGN : public Adafruit_UC8179 {
+ private:
+ public:
+  ThinkInk_750_Mono_AAAMFGN(int16_t SID, int16_t SCLK, int16_t DC, int16_t RST,
+                            int16_t CS, int16_t SRCS, int16_t MISO,
+                            int16_t BUSY = -1)
+      : Adafruit_UC8179(800, 480, SID, SCLK, DC, RST, CS, SRCS, MISO, BUSY){};
+
+  ThinkInk_750_Mono_AAAMFGN(int16_t DC, int16_t RST, int16_t CS, int16_t SRCS,
+                            int16_t BUSY = -1, SPIClass* spi = &SPI)
+      : Adafruit_UC8179(800, 480, DC, RST, CS, SRCS, BUSY, spi){};
+
+  void begin(thinkinkmode_t mode = THINKINK_MONO) {
+    Adafruit_EPD::begin(true);
+    setColorBuffer(1, false); // layer 1 uninverted
+    setBlackBuffer(1, false); // only one buffer
+
+    _epd_init_code = uc8179_750_mono_init_code;
+
+    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 = 3000;
+    setRotation(0);
+    // DO NOT power down again!
+  };
+};
+
+#endif // _THINKINK_750_MONO_AAAMFGN