updated epd sequences

Author: SeanTheITGuy

ports/espressif/boards/elecrow_crowpanel_4_2_epaper/board.c

@@ -14,25 +14,51 @@
 #include "shared-bindings/board/__init__.h"
 #include "shared-bindings/digitalio/DigitalInOut.h"
 
-#define DELAY 0x80
 #define HEIGHT 300
 #define WIDTH 400
 
+// Sequences pulled from InkyWhat driver (https://github.com/alanta/CircuitPython_InkyWhat)
 uint8_t start_sequence[] = {
-    0x01, 0x04, 0x03, 0x00, 0x2b, 0x2b, // power setting
-    0x06, 0x03, 0x17, 0x17, 0x17, // booster soft start
-    0x04, 0x80, 0xc8, // power on and wait 200 ms
-    0x00, 0x01, 0x0f, // panel setting
-    0x61, 0x04, (HEIGHT >> 8) & 0xFF, HEIGHT & 0xFF, (WIDTH >> 8) & 0xFF, WIDTH & 0xFF // Resolution
+    0x12, 0x80, 0x80,                   // Software reset ✅ TODO wait for busy instead of fixed delay
+    0x12, 0x80, 0x80,                   // Software reset ✅ TODO wait for busy instead of fixed delay
+    0x74, 0x01, 0x54,                   // set analog block control ✅
+    0x7e, 0x01, 0x3b,                   // set digital block control ✅
+    0x01, 0x03, 0x2b, 0x01, 0x00,       // driver output control
+    0x03, 0x01, 0x17,                   // Gate driving voltage ✅
+    0x04, 0x03, 0x07, 0xac, 0x32,       // Source Driving voltage ✅
+    0x3a, 0x01, 0x07,                   // Dummy line period ✅
+    0x3b, 0x01, 0x04,                   // Gate line width ✅
+    0x3c, 0x01, 0x00,                   // Border color
+    0x2c, 0x01, 0x3c,                   // VCOM Register, 0x3c = -1.5v? ✅
+    0x22, 0x01, 0xc7,                   // Display update sequence ✅
+    0x04, 0x03, 0x07, 0xac, 0x32,       // Set voltage of VSH and VSL (yellow)
+    // LUT (yellow)
+    0x32, 0x46,
+    0xfa, 0x94, 0x8c, 0xc0, 0xd0, 0x00, 0x00,
+    0xfa, 0x94, 0x2c, 0x80, 0xe0, 0x00, 0x00,
+    0xfa, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0xfa, 0x94, 0xf8, 0x80, 0x50, 0x00, 0xcc,
+    0xbf, 0x58, 0xfc, 0x80, 0xd0, 0x00, 0x11,
+    0x40, 0x10, 0x40, 0x10, 0x08,
+    0x08, 0x10, 0x04, 0x04, 0x10,
+    0x08, 0x08, 0x03, 0x08, 0x20,
+    0x08, 0x04, 0x00, 0x00, 0x10,
+    0x10, 0x08, 0x08, 0x00, 0x20,
+    0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00,
+    0x11, 0x01, 0x03,                   // Data entry mode setting 0x03 = X/Y increment ✅
+    //         self._send_command(0x44, [0x00, (self.cols // 8) - 1])  # Set RAM X Start/End
+    0x44, 0x02, 0x00, 0x31,             // Set RAM X Start/End
+    //         self._send_command(0x45, [0x00, 0x00] + packed_height)  # Set RAM Y Start/End
+    0x45, 0x04, 0x00, 0x00, 0x2b, 0x01, // Set RAM Y Start/End
 };
 
 uint8_t stop_sequence[] = {
-    0x50, 0x01, 0xf7, // CDI setting
-    0x02, 0x80, 0xf0  // Power off
+    0x10, 0x01, 0x01                    // Enter Deep Sleep
 };
 
 uint8_t refresh_sequence[] = {
-    0x12, 0x00
+    0x20, 0x00
 };
 
 void board_init(void) {
@@ -79,11 +105,11 @@ void board_init(void) {
         90, // rotation
         NO_COMMAND, // set_column_window_command
         NO_COMMAND, // set_row_window_command
-        NO_COMMAND, // set_current_column_command
-        NO_COMMAND, // set_current_row_command
-        0x13, // write_black_ram_command
+        0x4E, // set_current_column_command
+        0x4F, // set_current_row_command
+        0x24, // write_black_ram_command
         false, // black_bits_inverted
-        NO_COMMAND, // write_color_ram_command (can add this for grayscale eventually)
+        0x26, // write_color_ram_command (can add this for grayscale eventually)
         false, // color_bits_inverted
         0x000000, // highlight_color
         refresh_sequence, // refresh_display_sequence