OLED Driver Feature

3 files changed, 68 insertions, 493 deletions

diff --git a/keyboards/sol/common/glcdfont.c b/keyboards/sol/common/glcdfont.c
index 89665ba07..f772e3181 100644
--- a/keyboards/sol/common/glcdfont.c
+++ b/keyboards/sol/common/glcdfont.c
@@ -1,8 +1,4 @@
-// This is the 'classic' fixed-space bitmap font for Adafruit_GFX since 1.0.
-// See gfxfont.h for newer custom bitmap font info.
-
-#ifndef FONT5X7_H
-#define FONT5X7_H
+#pragma once
 
 #ifdef __AVR__
  #include <avr/io.h>
@@ -13,7 +9,8 @@
  #define PROGMEM
 #endif
 
-// Standard ASCII 5x7 font
+// Helidox 8x6 font with RGBKB SOL Logo
+// Online editor: http://teripom.x0.com/
 
 static const unsigned char font[] PROGMEM = {
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -144,27 +141,27 @@ static const unsigned char font[] PROGMEM = {
   0x00, 0x41, 0x36, 0x08, 0x00, 0x00,
   0x02, 0x01, 0x02, 0x04, 0x02, 0x00,
   0x3C, 0x26, 0x23, 0x26, 0x3C, 0x00,
-  0x03, 0x07, 0x1F, 0x7F, 0xFF, 0xFF,
-  0xFE, 0xF8, 0xF0, 0xC0, 0x20, 0xF8,
-  0xFE, 0xFF, 0xFE, 0x79, 0x27, 0x1F,
-  0x7F, 0xFF, 0xFF, 0xFE, 0xF8, 0xF0,
-  0xC0, 0x20, 0xF8, 0xFE, 0xFF, 0xFF,
-  0x7F, 0x3F, 0x3F, 0x7F, 0xFF, 0xFE,
-  0xF8, 0xF0, 0xC0, 0x00, 0x00, 0x00,
-  0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
-  0xFF, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0xFF, 0x7F, 0x7F, 0x7F,
-  0xBF, 0xBF, 0xC0, 0xC0, 0xC0, 0xE0,
-  0xE0, 0xE0, 0xE0, 0xF0, 0xF0, 0xF0,
-  0xF8, 0x78, 0x78, 0x7C, 0x3C, 0x3C,
-  0xFE, 0xFE, 0xFE, 0xFF, 0xFF, 0xFF,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x80, 0x00,
+  0x00, 0x00, 0x00, 0x80, 0x80, 0x80,
   0x00, 0x00, 0x00, 0x00, 0x80, 0x80,
-  0xBF, 0xBF, 0xDF, 0xDF, 0xEF, 0xEF,
-  0x00, 0x03, 0x07, 0x1F, 0x7F, 0xFF,
-  0xFF, 0xFF, 0xFE, 0xF8, 0xE0, 0xC0,
-  0xE0, 0xF8, 0xFE, 0xFF, 0xFF, 0xFF,
-  0x7F, 0x1F, 0x07, 0x03, 0x00, 0x00,
+  0x80, 0x80, 0x80, 0x80, 0x80, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x80, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x80, 0x00, 0x00, 0x0C, 0x90,
+  0xB0, 0xE0, 0x72, 0x31, 0x9B, 0xDE,
+  0xCE, 0xEC, 0xEE, 0xE9, 0xE9, 0xEC,
+  0xCF, 0xDA, 0x99, 0x3E, 0x62, 0xE4,
+  0xC4, 0x70, 0x10, 0x10, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x60,
+  0xC0, 0xC0, 0x80, 0x80, 0x02, 0x85,
+  0x85, 0x87, 0x85, 0x89, 0x89, 0x92,
+  0xEA, 0xC6, 0xC4, 0x48, 0x50, 0x60,
+  0x40, 0x40, 0x40, 0x40, 0xC0, 0xE0,
+  0x50, 0x28, 0x10, 0x10, 0x60, 0xC0,
+  0x40, 0x40, 0x40, 0x40, 0x80, 0x80,
+  0x80, 0x80, 0x80, 0xE0, 0xF8, 0xFC,
+  0xF8, 0xF0, 0x00, 0x00, 0x00, 0x00,
   0xE0, 0xF0, 0xF0, 0xF0, 0xE0, 0xEC,
   0xEE, 0xF7, 0xF3, 0x70, 0x20, 0x00,
   0x7C, 0x7C, 0x7C, 0x7E, 0x00, 0x7E,
@@ -173,30 +170,30 @@ static const unsigned char font[] PROGMEM = {
   0x4F, 0x5B, 0xFE, 0xC0, 0x00, 0x00,
   0xC0, 0x00, 0xDC, 0xD7, 0xDE, 0xDE,
   0xDE, 0xD7, 0xDC, 0x00, 0xC0, 0x00,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0x00, 0x00, 0xC1, 0xF3,
-  0xCF, 0xBF, 0x7F, 0xFF, 0xFF, 0xFC,
-  0xFB, 0xE7, 0x81, 0x00, 0x00, 0x00,
-  0x00, 0x80, 0xE3, 0xCF, 0x3F, 0xFF,
-  0xFF, 0xFF, 0xFC, 0xFB, 0xE7, 0x81,
-  0x00, 0x00, 0x00, 0x00, 0x81, 0xE7,
-  0xFF, 0xFF, 0xFF, 0xFF, 0x3C, 0x00,
-  0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
-  0xFF, 0xF8, 0xF8, 0xFC, 0x7C, 0x7E,
-  0x7E, 0x3E, 0xFE, 0xFF, 0xFF, 0xFF,
-  0xFF, 0xFF, 0xF7, 0xF7, 0xF7, 0xFB,
-  0xFB, 0x7D, 0x7D, 0x7D, 0xBE, 0xBE,
-  0xBE, 0xDF, 0xDF, 0xE0, 0xE0, 0x00,
-  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
-  0x00, 0xFC, 0xFC, 0x7C, 0x7E, 0x7E,
-  0x3E, 0x3E, 0x1F, 0x1F, 0x1F, 0x0F,
+  0x00, 0x00, 0x00, 0xE0, 0xEC, 0xDF,
+  0xFC, 0xE0, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x7F, 0x80, 0x80,
+  0x80, 0x70, 0x0F, 0x00, 0x00, 0x80,
+  0x7F, 0x00, 0x00, 0x7F, 0x80, 0x80,
+  0x80, 0x80, 0x80, 0x80, 0x80, 0x7F,
+  0x00, 0x00, 0x80, 0x80, 0x80, 0x80,
+  0x80, 0x80, 0x80, 0xFF, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x40, 0x21, 0x33, 0x3B, 0x7B,
+  0xFF, 0x00, 0x7C, 0xFF, 0xFF, 0xFF,
   0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x81,
-  0xE7, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
-  0xFF, 0xFF, 0xFF, 0xFF, 0xE7, 0x81,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0xFF, 0xFF, 0xFF, 0xFF, 0x7C, 0x01,
+  0xFF, 0xDE, 0x8C, 0x04, 0x0C, 0x08,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x01, 0x01, 0x01, 0x7F, 0x80,
+  0x80, 0xBE, 0xBE, 0x80, 0x80, 0x80,
+  0xC1, 0xFF, 0x80, 0x04, 0x32, 0x5E,
+  0x1C, 0x3D, 0x26, 0x10, 0xC1, 0xFF,
+  0x3E, 0x00, 0x00, 0x08, 0x36, 0xC1,
+  0x08, 0x08, 0x14, 0x77, 0x94, 0x94,
+  0x94, 0xF7, 0x94, 0xF7, 0x9C, 0x9C,
+  0xFF, 0xFF, 0x1E, 0x00, 0x00, 0x00,
   0x0F, 0x1F, 0x3F, 0x7F, 0x7F, 0x7F,
   0x7F, 0x7F, 0x3F, 0x1E, 0x0C, 0x00,
   0x1F, 0x1F, 0x1F, 0x3F, 0x00, 0x3F,
@@ -205,30 +202,31 @@ static const unsigned char font[] PROGMEM = {
   0x20, 0x30, 0x78, 0x7F, 0x3B, 0x00,
   0x03, 0x00, 0x0F, 0x7F, 0x0F, 0x0F,
   0x0F, 0x7F, 0x0F, 0x00, 0x03, 0x00,
+  0x40, 0x7C, 0x3F, 0x3F, 0x23, 0x01,
+  0x23, 0x3F, 0x37, 0x6C, 0x40, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x06, 0x02, 0x06,
+  0x4D, 0x4F, 0x8C, 0xF9, 0x73, 0x37,
+  0x27, 0x2F, 0x2F, 0xAF, 0xEF, 0x6F,
+  0x77, 0x17, 0x33, 0x79, 0xCC, 0x1F,
+  0x31, 0x20, 0x21, 0x02, 0x02, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x40, 0xE0,
+  0xA0, 0xA0, 0xD0, 0x90, 0x48, 0x48,
+  0x25, 0x2B, 0x11, 0x09, 0x05, 0x03,
+  0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+  0x01, 0x03, 0x02, 0x04, 0x03, 0x01,
+  0x01, 0x01, 0x01, 0x01, 0x01, 0x00,
+  0x00, 0x00, 0x00, 0x03, 0x0F, 0x1F,
+  0x0F, 0x03, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x60, 0x70, 0x7C, 0x7F, 0x7F, 0x7F,
-  0x7F, 0x1F, 0x06, 0x01, 0x03, 0x0F,
-  0x3F, 0x7F, 0x7F, 0x7E, 0x7C, 0x7C,
-  0x7E, 0x7F, 0x7F, 0x7F, 0x1F, 0x06,
-  0x01, 0x07, 0x0F, 0x3F, 0x7F, 0x7F,
-  0x7E, 0x7C, 0x7C, 0x7E, 0x7F, 0x7F,
-  0x3F, 0x0F, 0x03, 0x00, 0x00, 0x00,
-  0x00, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F,
-  0x7F, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0x7F, 0x7F, 0x7F, 0x7F,
-  0x7F, 0x7F, 0x7D, 0x7D, 0x3D, 0x3E,
-  0x1E, 0x1F, 0x1F, 0x1F, 0x0F, 0x0F,
-  0x07, 0x07, 0x07, 0x03, 0x03, 0x00,
-  0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F,
-  0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C,
-  0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x00,
-  0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F,
-  0x00, 0x40, 0x70, 0x78, 0x7E, 0x7F,
-  0x7F, 0x7F, 0x3F, 0x0F, 0x03, 0x01,
-  0x03, 0x0F, 0x3F, 0x7F, 0x7F, 0x7F,
-  0x7E, 0x78, 0x70, 0x40, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -239,6 +237,4 @@ static const unsigned char font[] PROGMEM = {
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00
 };
-#endif // FONT5X7_H
diff --git a/keyboards/sol/common/ssd1306.c b/keyboards/sol/common/ssd1306.c
deleted file mode 100644
index b3e55a67c..000000000
--- a/keyboards/sol/common/ssd1306.c
+++ /dev/null
@@ -1,329 +0,0 @@
-#ifdef SSD1306OLED
-
-#include "ssd1306.h"
-#include "i2c.h"
-#include <string.h>
-#include "print.h"
-#ifndef LOCAL_GLCDFONT
-#include "common/glcdfont.c"
-#else
-#include <helixfont.h>
-#endif
-#ifdef ADAFRUIT_BLE_ENABLE
-#include "adafruit_ble.h"
-#endif
-#ifdef PROTOCOL_LUFA
-#include "lufa.h"
-#endif
-#include "sendchar.h"
-#include "timer.h"
-
-// Set this to 1 to help diagnose early startup problems
-// when testing power-on with ble.  Turn it off otherwise,
-// as the latency of printing most of the debug info messes
-// with the matrix scan, causing keys to drop.
-#define DEBUG_TO_SCREEN 0
-
-//static uint16_t last_battery_update;
-//static uint32_t vbat;
-//#define BatteryUpdateInterval 10000 /* milliseconds */
-#define ScreenOffInterval 300000 /* milliseconds */
-#if DEBUG_TO_SCREEN
-static uint8_t displaying;
-#endif
-static uint16_t last_flush;
-
-// Write command sequence.
-// Returns true on success.
-static inline bool _send_cmd1(uint8_t cmd) {
-  bool res = false;
-
-  if (i2c_start_write(SSD1306_ADDRESS)) {
-    xprintf("failed to start write to %d\n", SSD1306_ADDRESS);
-    goto done;
-  }
-
-  if (i2c_master_write(0x0 /* command byte follows */)) {
-    print("failed to write control byte\n");
-
-    goto done;
-  }
-
-  if (i2c_master_write(cmd)) {
-    xprintf("failed to write command %d\n", cmd);
-    goto done;
-  }
-  res = true;
-done:
-  i2c_master_stop();
-  return res;
-}
-
-// Write 2-byte command sequence.
-// Returns true on success
-static inline bool _send_cmd2(uint8_t cmd, uint8_t opr) {
-  if (!_send_cmd1(cmd)) {
-    return false;
-  }
-  return _send_cmd1(opr);
-}
-
-// Write 3-byte command sequence.
-// Returns true on success
-static inline bool _send_cmd3(uint8_t cmd, uint8_t opr1, uint8_t opr2) {
-  if (!_send_cmd1(cmd)) {
-    return false;
-  }
-  if (!_send_cmd1(opr1)) {
-    return false;
-  }
-  return _send_cmd1(opr2);
-}
-
-#define send_cmd1(c) if (!_send_cmd1(c)) {goto done;}
-#define send_cmd2(c,o) if (!_send_cmd2(c,o)) {goto done;}
-#define send_cmd3(c,o1,o2) if (!_send_cmd3(c,o1,o2)) {goto done;}
-
-static void clear_display(void) {
-  matrix_clear(&display);
-
-  // Clear all of the display bits (there can be random noise
-  // in the RAM on startup)
-  send_cmd3(PageAddr, 0, (DisplayHeight / 8) - 1);
-  send_cmd3(ColumnAddr, 0, DisplayWidth - 1);
-
-  if (i2c_start_write(SSD1306_ADDRESS)) {
-    goto done;
-  }
-  if (i2c_master_write(0x40)) {
-    // Data mode
-    goto done;
-  }
-  for (uint8_t row = 0; row < MatrixRows; ++row) {
-    for (uint8_t col = 0; col < DisplayWidth; ++col) {
-      i2c_master_write(0);
-    }
-  }
-
-  display.dirty = false;
-
-done:
-  i2c_master_stop();
-}
-
-#if DEBUG_TO_SCREEN
-#undef sendchar
-static int8_t capture_sendchar(uint8_t c) {
-  sendchar(c);
-  iota_gfx_write_char(c);
-
-  if (!displaying) {
-    iota_gfx_flush();
-  }
-  return 0;
-}
-#endif
-
-bool iota_gfx_init(bool rotate) {
-  bool success = false;
-
-  i2c_master_init();
-  send_cmd1(DisplayOff);
-  send_cmd2(SetDisplayClockDiv, 0x80);
-  send_cmd2(SetMultiPlex, DisplayHeight - 1);
-
-  send_cmd2(SetDisplayOffset, 0);
-
-
-  send_cmd1(SetStartLine | 0x0);
-  send_cmd2(SetChargePump, 0x14 /* Enable */);
-  send_cmd2(SetMemoryMode, 0 /* horizontal addressing */);
-
-  if(rotate){
-    // the following Flip the display orientation 180 degrees
-    send_cmd1(SegRemap);
-    send_cmd1(ComScanInc);
-  }else{
-    // Flips the display orientation 0 degrees
-    send_cmd1(SegRemap | 0x1);
-    send_cmd1(ComScanDec);
-  }
-
-  send_cmd2(SetComPins, 0x2);
-  send_cmd2(SetContrast, 0x8f);
-  send_cmd2(SetPreCharge, 0xf1);
-  send_cmd2(SetVComDetect, 0x40);
-  send_cmd1(DisplayAllOnResume);
-  send_cmd1(NormalDisplay);
-  send_cmd1(DeActivateScroll);
-  send_cmd1(DisplayOn);
-
-  send_cmd2(SetContrast, 0); // Dim
-
-  clear_display();
-
-  success = true;
-
-  iota_gfx_flush();
-
-#if DEBUG_TO_SCREEN
-  print_set_sendchar(capture_sendchar);
-#endif
-
-done:
-  return success;
-}
-
-bool iota_gfx_off(void) {
-  bool success = false;
-
-  send_cmd1(DisplayOff);
-  success = true;
-
-done:
-  return success;
-}
-
-bool iota_gfx_on(void) {
-  bool success = false;
-
-  send_cmd1(DisplayOn);
-  success = true;
-
-done:
-  return success;
-}
-
-void matrix_write_char_inner(struct CharacterMatrix *matrix, uint8_t c) {
-  *matrix->cursor = c;
-  ++matrix->cursor;
-
-  if (matrix->cursor - &matrix->display[0][0] == sizeof(matrix->display)) {
-    // We went off the end; scroll the display upwards by one line
-    memmove(&matrix->display[0], &matrix->display[1],
-            MatrixCols * (MatrixRows - 1));
-    matrix->cursor = &matrix->display[MatrixRows - 1][0];
-    memset(matrix->cursor, ' ', MatrixCols);
-  }
-}
-
-void matrix_write_char(struct CharacterMatrix *matrix, uint8_t c) {
-  matrix->dirty = true;
-
-  if (c == '\n') {
-    // Clear to end of line from the cursor and then move to the
-    // start of the next line
-    uint8_t cursor_col = (matrix->cursor - &matrix->display[0][0]) % MatrixCols;
-
-    while (cursor_col++ < MatrixCols) {
-      matrix_write_char_inner(matrix, ' ');
-    }
-    return;
-  }
-
-  matrix_write_char_inner(matrix, c);
-}
-
-void iota_gfx_write_char(uint8_t c) {
-  matrix_write_char(&display, c);
-}
-
-void matrix_write(struct CharacterMatrix *matrix, const char *data) {
-  const char *end = data + strlen(data);
-  while (data < end) {
-    matrix_write_char(matrix, *data);
-    ++data;
-  }
-}
-
-void iota_gfx_write(const char *data) {
-  matrix_write(&display, data);
-}
-
-void matrix_write_P(struct CharacterMatrix *matrix, const char *data) {
-  while (true) {
-    uint8_t c = pgm_read_byte(data);
-    if (c == 0) {
-      return;
-    }
-    matrix_write_char(matrix, c);
-    ++data;
-  }
-}
-
-void iota_gfx_write_P(const char *data) {
-  matrix_write_P(&display, data);
-}
-
-void matrix_clear(struct CharacterMatrix *matrix) {
-  memset(matrix->display, ' ', sizeof(matrix->display));
-  matrix->cursor = &matrix->display[0][0];
-  matrix->dirty = true;
-}
-
-void iota_gfx_clear_screen(void) {
-  matrix_clear(&display);
-}
-
-void matrix_render(struct CharacterMatrix *matrix) {
-  last_flush = timer_read();
-  iota_gfx_on();
-#if DEBUG_TO_SCREEN
-  ++displaying;
-#endif
-
-  // Move to the home position
-  send_cmd3(PageAddr, 0, MatrixRows - 1);
-  send_cmd3(ColumnAddr, 0, (MatrixCols * FontWidth) - 1);
-
-  if (i2c_start_write(SSD1306_ADDRESS)) {
-    goto done;
-  }
-  if (i2c_master_write(0x40)) {
-    // Data mode
-    goto done;
-  }
-
-  for (uint8_t row = 0; row < MatrixRows; ++row) {
-    for (uint8_t col = 0; col < MatrixCols; ++col) {
-      const uint8_t *glyph = font + (matrix->display[row][col] * FontWidth);
-
-      for (uint8_t glyphCol = 0; glyphCol < FontWidth; ++glyphCol) {
-        uint8_t colBits = pgm_read_byte(glyph + glyphCol);
-        i2c_master_write(colBits);
-      }
-
-      // 1 column of space between chars (it's not included in the glyph)
-      //i2c_master_write(0);
-    }
-  }
-
-  matrix->dirty = false;
-
-done:
-  i2c_master_stop();
-#if DEBUG_TO_SCREEN
-  --displaying;
-#endif
-}
-
-void iota_gfx_flush(void) {
-  matrix_render(&display);
-}
-
-__attribute__ ((weak))
-void iota_gfx_task_user(void) {
-}
-
-void iota_gfx_task(void) {
-  iota_gfx_task_user();
-
-  if (display.dirty) {
-    iota_gfx_flush();
-  }
-
-  if (timer_elapsed(last_flush) > ScreenOffInterval) {
-    iota_gfx_off();
-  }
-}
-#endif
diff --git a/keyboards/sol/common/ssd1306.h b/keyboards/sol/common/ssd1306.h
deleted file mode 100644
index 77ce7c211..000000000
--- a/keyboards/sol/common/ssd1306.h
+++ /dev/null
@@ -1,92 +0,0 @@
-#ifndef SSD1306_H
-#define SSD1306_H
-
-#include <stdbool.h>
-#include <stdio.h>
-#include "pincontrol.h"
-
-enum ssd1306_cmds {
-  DisplayOff = 0xAE,
-  DisplayOn = 0xAF,
-
-  SetContrast = 0x81,
-  DisplayAllOnResume = 0xA4,
-
-  DisplayAllOn = 0xA5,
-  NormalDisplay = 0xA6,
-  InvertDisplay = 0xA7,
-  SetDisplayOffset = 0xD3,
-  SetComPins = 0xda,
-  SetVComDetect = 0xdb,
-  SetDisplayClockDiv = 0xD5,
-  SetPreCharge = 0xd9,
-  SetMultiPlex = 0xa8,
-  SetLowColumn = 0x00,
-  SetHighColumn = 0x10,
-  SetStartLine = 0x40,
-
-  SetMemoryMode = 0x20,
-  ColumnAddr = 0x21,
-  PageAddr = 0x22,
-
-  ComScanInc = 0xc0,
-  ComScanDec = 0xc8,
-  SegRemap = 0xa0,
-  SetChargePump = 0x8d,
-  ExternalVcc = 0x01,
-  SwitchCapVcc = 0x02,
-
-  ActivateScroll = 0x2f,
-  DeActivateScroll = 0x2e,
-  SetVerticalScrollArea = 0xa3,
-  RightHorizontalScroll = 0x26,
-  LeftHorizontalScroll = 0x27,
-  VerticalAndRightHorizontalScroll = 0x29,
-  VerticalAndLeftHorizontalScroll = 0x2a,
-};
-
-// Controls the SSD1306 128x32 OLED display via i2c
-
-#ifndef SSD1306_ADDRESS
-#define SSD1306_ADDRESS 0x3C
-#endif
-
-#define DisplayHeight 32
-#define DisplayWidth 128
-
-#define FontHeight 8
-#define FontWidth 6
-
-#define MatrixRows (DisplayHeight / FontHeight)
-#define MatrixCols (DisplayWidth / FontWidth)
-
-struct CharacterMatrix {
-  uint8_t display[MatrixRows][MatrixCols];
-  uint8_t *cursor;
-  bool dirty;
-};
-
-struct CharacterMatrix display;
-
-bool iota_gfx_init(bool rotate);
-void iota_gfx_task(void);
-bool iota_gfx_off(void);
-bool iota_gfx_on(void);
-void iota_gfx_flush(void);
-void iota_gfx_write_char(uint8_t c);
-void iota_gfx_write(const char *data);
-void iota_gfx_write_P(const char *data);
-void iota_gfx_clear_screen(void);
-
-void iota_gfx_task_user(void);
-
-void matrix_clear(struct CharacterMatrix *matrix);
-void matrix_write_char_inner(struct CharacterMatrix *matrix, uint8_t c);
-void matrix_write_char(struct CharacterMatrix *matrix, uint8_t c);
-void matrix_write(struct CharacterMatrix *matrix, const char *data);
-void matrix_write_P(struct CharacterMatrix *matrix, const char *data);
-void matrix_render(struct CharacterMatrix *matrix);
-
-
-
-#endif