src/main/drivers/display_ug2864hsweg01.c

   1 /*
   2  * This file is part of Cleanflight and Betaflight.
   3  *
   4  * Cleanflight and Betaflight are free software. You can redistribute
   5  * this software and/or modify this software under the terms of the
   6  * GNU General Public License as published by the Free Software
   7  * Foundation, either version 3 of the License, or (at your option)
   8  * any later version.
   9  *
  10  * Cleanflight and Betaflight are distributed in the hope that they
  11  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  12  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13  * See the GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this software.
  17  *
  18  * If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <stdbool.h>
  22 #include <stdint.h>
  23
  24 #include "platform.h"
  25
  26 #include "common/utils.h"
  27
  28 #include "drivers/bus_i2c.h"
  29
  30 #include "display_ug2864hsweg01.h"
  31
  32 #ifdef USE_I2C_OLED_DISPLAY
  33
  34 #define INVERSE_CHAR_FORMAT 0x7f // 0b01111111
  35 #define NORMAL_CHAR_FORMAT  0x00 // 0b00000000
  36
  37 unsigned char CHAR_FORMAT = NORMAL_CHAR_FORMAT;
  38
  39 static const uint8_t multiWiiFont[][5] = { // Refer to "Times New Roman" Font Database... 5 x 7 font
  40         { 0x00, 0x00, 0x00, 0x00, 0x00 }, { 0x00, 0x00, 0x4F, 0x00, 0x00 }, //   (  1)  ! - 0x0021 Exclamation Mark
  41                 { 0x00, 0x07, 0x00, 0x07, 0x00 }, //   (  2)  " - 0x0022 Quotation Mark
  42                 { 0x14, 0x7F, 0x14, 0x7F, 0x14 }, //   (  3)  # - 0x0023 Number Sign
  43                 { 0x24, 0x2A, 0x7F, 0x2A, 0x12 }, //   (  4)  $ - 0x0024 Dollar Sign
  44                 { 0x23, 0x13, 0x08, 0x64, 0x62 }, //   (  5)  % - 0x0025 Percent Sign
  45                 { 0x36, 0x49, 0x55, 0x22, 0x50 }, //   (  6)  & - 0x0026 Ampersand
  46                 { 0x00, 0x05, 0x03, 0x00, 0x00 }, //   (  7)  ' - 0x0027 Apostrophe
  47                 { 0x00, 0x1C, 0x22, 0x41, 0x00 }, //   (  8)  ( - 0x0028 Left Parenthesis
  48                 { 0x00, 0x41, 0x22, 0x1C, 0x00 }, //   (  9)  ) - 0x0029 Right Parenthesis
  49                 { 0x14, 0x08, 0x3E, 0x08, 0x14 }, //   ( 10)  * - 0x002A Asterisk
  50                 { 0x08, 0x08, 0x3E, 0x08, 0x08 }, //   ( 11)  + - 0x002B Plus Sign
  51                 { 0x00, 0x50, 0x30, 0x00, 0x00 }, //   ( 12)  , - 0x002C Comma
  52                 { 0x08, 0x08, 0x08, 0x08, 0x08 }, //   ( 13)  - - 0x002D Hyphen-Minus
  53                 { 0x00, 0x60, 0x60, 0x00, 0x00 }, //   ( 14)  . - 0x002E Full Stop
  54                 { 0x20, 0x10, 0x08, 0x04, 0x02 }, //   ( 15)  / - 0x002F Solidus
  55                 { 0x3E, 0x51, 0x49, 0x45, 0x3E }, //   ( 16)  0 - 0x0030 Digit Zero
  56                 { 0x00, 0x42, 0x7F, 0x40, 0x00 }, //   ( 17)  1 - 0x0031 Digit One
  57                 { 0x42, 0x61, 0x51, 0x49, 0x46 }, //   ( 18)  2 - 0x0032 Digit Two
  58                 { 0x21, 0x41, 0x45, 0x4B, 0x31 }, //   ( 19)  3 - 0x0033 Digit Three
  59                 { 0x18, 0x14, 0x12, 0x7F, 0x10 }, //   ( 20)  4 - 0x0034 Digit Four
  60                 { 0x27, 0x45, 0x45, 0x45, 0x39 }, //   ( 21)  5 - 0x0035 Digit Five
  61                 { 0x3C, 0x4A, 0x49, 0x49, 0x30 }, //   ( 22)  6 - 0x0036 Digit Six
  62                 { 0x01, 0x71, 0x09, 0x05, 0x03 }, //   ( 23)  7 - 0x0037 Digit Seven
  63                 { 0x36, 0x49, 0x49, 0x49, 0x36 }, //   ( 24)  8 - 0x0038 Digit Eight
  64                 { 0x06, 0x49, 0x49, 0x29, 0x1E }, //   ( 25)  9 - 0x0039 Dight Nine
  65                 { 0x00, 0x36, 0x36, 0x00, 0x00 }, //   ( 26)  : - 0x003A Colon
  66                 { 0x00, 0x56, 0x36, 0x00, 0x00 }, //   ( 27)  ; - 0x003B Semicolon
  67                 { 0x08, 0x14, 0x22, 0x41, 0x00 }, //   ( 28)  < - 0x003C Less-Than Sign
  68                 { 0x14, 0x14, 0x14, 0x14, 0x14 }, //   ( 29)  = - 0x003D Equals Sign
  69                 { 0x00, 0x41, 0x22, 0x14, 0x08 }, //   ( 30)  > - 0x003E Greater-Than Sign
  70                 { 0x02, 0x01, 0x51, 0x09, 0x06 }, //   ( 31)  ? - 0x003F Question Mark
  71                 { 0x32, 0x49, 0x79, 0x41, 0x3E }, //   ( 32)  @ - 0x0040 Commercial At
  72                 { 0x7E, 0x11, 0x11, 0x11, 0x7E }, //   ( 33)  A - 0x0041 Latin Capital Letter A
  73                 { 0x7F, 0x49, 0x49, 0x49, 0x36 }, //   ( 34)  B - 0x0042 Latin Capital Letter B
  74                 { 0x3E, 0x41, 0x41, 0x41, 0x22 }, //   ( 35)  C - 0x0043 Latin Capital Letter C
  75                 { 0x7F, 0x41, 0x41, 0x22, 0x1C }, //   ( 36)  D - 0x0044 Latin Capital Letter D
  76                 { 0x7F, 0x49, 0x49, 0x49, 0x41 }, //   ( 37)  E - 0x0045 Latin Capital Letter E
  77                 { 0x7F, 0x09, 0x09, 0x09, 0x01 }, //   ( 38)  F - 0x0046 Latin Capital Letter F
  78                 { 0x3E, 0x41, 0x49, 0x49, 0x7A }, //   ( 39)  G - 0x0047 Latin Capital Letter G
  79                 { 0x7F, 0x08, 0x08, 0x08, 0x7F }, //   ( 40)  H - 0x0048 Latin Capital Letter H
  80                 { 0x00, 0x41, 0x7F, 0x41, 0x00 }, //   ( 41)  I - 0x0049 Latin Capital Letter I
  81                 { 0x20, 0x40, 0x41, 0x3F, 0x01 }, //   ( 42)  J - 0x004A Latin Capital Letter J
  82                 { 0x7F, 0x08, 0x14, 0x22, 0x41 }, //   ( 43)  K - 0x004B Latin Capital Letter K
  83                 { 0x7F, 0x40, 0x40, 0x40, 0x40 }, //   ( 44)  L - 0x004C Latin Capital Letter L
  84                 { 0x7F, 0x02, 0x0C, 0x02, 0x7F }, //   ( 45)  M - 0x004D Latin Capital Letter M
  85                 { 0x7F, 0x04, 0x08, 0x10, 0x7F }, //   ( 46)  N - 0x004E Latin Capital Letter N
  86                 { 0x3E, 0x41, 0x41, 0x41, 0x3E }, //   ( 47)  O - 0x004F Latin Capital Letter O
  87                 { 0x7F, 0x09, 0x09, 0x09, 0x06 }, //   ( 48)  P - 0x0050 Latin Capital Letter P
  88                 { 0x3E, 0x41, 0x51, 0x21, 0x5E }, //   ( 49)  Q - 0x0051 Latin Capital Letter Q
  89                 { 0x7F, 0x09, 0x19, 0x29, 0x46 }, //   ( 50)  R - 0x0052 Latin Capital Letter R
  90                 { 0x46, 0x49, 0x49, 0x49, 0x31 }, //   ( 51)  S - 0x0053 Latin Capital Letter S
  91                 { 0x01, 0x01, 0x7F, 0x01, 0x01 }, //   ( 52)  T - 0x0054 Latin Capital Letter T
  92                 { 0x3F, 0x40, 0x40, 0x40, 0x3F }, //   ( 53)  U - 0x0055 Latin Capital Letter U
  93                 { 0x1F, 0x20, 0x40, 0x20, 0x1F }, //   ( 54)  V - 0x0056 Latin Capital Letter V
  94                 { 0x3F, 0x40, 0x38, 0x40, 0x3F }, //   ( 55)  W - 0x0057 Latin Capital Letter W
  95                 { 0x63, 0x14, 0x08, 0x14, 0x63 }, //   ( 56)  X - 0x0058 Latin Capital Letter X
  96                 { 0x07, 0x08, 0x70, 0x08, 0x07 }, //   ( 57)  Y - 0x0059 Latin Capital Letter Y
  97                 { 0x61, 0x51, 0x49, 0x45, 0x43 }, //   ( 58)  Z - 0x005A Latin Capital Letter Z
  98                 { 0x00, 0x7F, 0x41, 0x41, 0x00 }, //   ( 59)  [ - 0x005B Left Square Bracket
  99                 { 0x02, 0x04, 0x08, 0x10, 0x20 }, //   ( 60)  \ - 0x005C Reverse Solidus
 100                 { 0x00, 0x41, 0x41, 0x7F, 0x00 }, //   ( 61)  ] - 0x005D Right Square Bracket
 101                 { 0x04, 0x02, 0x01, 0x02, 0x04 }, //   ( 62)  ^ - 0x005E Circumflex Accent
 102                 { 0x40, 0x40, 0x40, 0x40, 0x40 }, //   ( 63)  _ - 0x005F Low Line
 103                 { 0x01, 0x02, 0x04, 0x00, 0x00 }, //   ( 64)  ` - 0x0060 Grave Accent
 104                 { 0x20, 0x54, 0x54, 0x54, 0x78 }, //   ( 65)  a - 0x0061 Latin Small Letter A
 105                 { 0x7F, 0x48, 0x44, 0x44, 0x38 }, //   ( 66)  b - 0x0062 Latin Small Letter B
 106                 { 0x38, 0x44, 0x44, 0x44, 0x20 }, //   ( 67)  c - 0x0063 Latin Small Letter C
 107                 { 0x38, 0x44, 0x44, 0x48, 0x7F }, //   ( 68)  d - 0x0064 Latin Small Letter D
 108                 { 0x38, 0x54, 0x54, 0x54, 0x18 }, //   ( 69)  e - 0x0065 Latin Small Letter E
 109                 { 0x08, 0x7E, 0x09, 0x01, 0x02 }, //   ( 70)  f - 0x0066 Latin Small Letter F
 110                 { 0x06, 0x49, 0x49, 0x49, 0x3F }, //   ( 71)  g - 0x0067 Latin Small Letter G
 111                 { 0x7F, 0x08, 0x04, 0x04, 0x78 }, //   ( 72)  h - 0x0068 Latin Small Letter H
 112                 { 0x00, 0x44, 0x7D, 0x40, 0x00 }, //   ( 73)  i - 0x0069 Latin Small Letter I
 113                 { 0x20, 0x40, 0x44, 0x3D, 0x00 }, //   ( 74)  j - 0x006A Latin Small Letter J
 114                 { 0x7F, 0x10, 0x28, 0x44, 0x00 }, //   ( 75)  k - 0x006B Latin Small Letter K
 115                 { 0x00, 0x41, 0x7F, 0x40, 0x00 }, //   ( 76)  l - 0x006C Latin Small Letter L
 116                 { 0x7C, 0x04, 0x18, 0x04, 0x7C }, //   ( 77)  m - 0x006D Latin Small Letter M
 117                 { 0x7C, 0x08, 0x04, 0x04, 0x78 }, //   ( 78)  n - 0x006E Latin Small Letter N
 118                 { 0x38, 0x44, 0x44, 0x44, 0x38 }, //   ( 79)  o - 0x006F Latin Small Letter O
 119                 { 0x7C, 0x14, 0x14, 0x14, 0x08 }, //   ( 80)  p - 0x0070 Latin Small Letter P
 120                 { 0x08, 0x14, 0x14, 0x18, 0x7C }, //   ( 81)  q - 0x0071 Latin Small Letter Q
 121                 { 0x7C, 0x08, 0x04, 0x04, 0x08 }, //   ( 82)  r - 0x0072 Latin Small Letter R
 122                 { 0x48, 0x54, 0x54, 0x54, 0x20 }, //   ( 83)  s - 0x0073 Latin Small Letter S
 123                 { 0x04, 0x3F, 0x44, 0x40, 0x20 }, //   ( 84)  t - 0x0074 Latin Small Letter T
 124                 { 0x3C, 0x40, 0x40, 0x20, 0x7C }, //   ( 85)  u - 0x0075 Latin Small Letter U
 125                 { 0x1C, 0x20, 0x40, 0x20, 0x1C }, //   ( 86)  v - 0x0076 Latin Small Letter V
 126                 { 0x3C, 0x40, 0x30, 0x40, 0x3C }, //   ( 87)  w - 0x0077 Latin Small Letter W
 127                 { 0x44, 0x28, 0x10, 0x28, 0x44 }, //   ( 88)  x - 0x0078 Latin Small Letter X
 128                 { 0x0C, 0x50, 0x50, 0x50, 0x3C }, //   ( 89)  y - 0x0079 Latin Small Letter Y
 129                 { 0x44, 0x64, 0x54, 0x4C, 0x44 }, //   ( 90)  z - 0x007A Latin Small Letter Z
 130                 { 0x00, 0x08, 0x36, 0x41, 0x00 }, //   ( 91)  { - 0x007B Left Curly Bracket
 131                 { 0x00, 0x00, 0x7F, 0x00, 0x00 }, //   ( 92)  | - 0x007C Vertical Line
 132                 { 0x00, 0x41, 0x36, 0x08, 0x00 }, //   ( 93)  } - 0x007D Right Curly Bracket
 133                 { 0x02, 0x01, 0x02, 0x04, 0x02 }, //   ( 94)  ~ - 0x007E Tilde
 134                 { 0x3E, 0x55, 0x55, 0x41, 0x22 }, //   ( 95)  C - 0x0080 <Control>
 135                 { 0x00, 0x00, 0x00, 0x00, 0x00 }, //   ( 96)    - 0x00A0 No-Break Space
 136                 { 0x00, 0x00, 0x79, 0x00, 0x00 }, //   ( 97)  ! - 0x00A1 Inverted Exclamation Mark
 137                 { 0x18, 0x24, 0x74, 0x2E, 0x24 }, //   ( 98)  c - 0x00A2 Cent Sign
 138                 { 0x48, 0x7E, 0x49, 0x42, 0x40 }, //   ( 99)  L - 0x00A3 Pound Sign
 139                 { 0x5D, 0x22, 0x22, 0x22, 0x5D }, //   (100)  o - 0x00A4 Currency Sign
 140                 { 0x15, 0x16, 0x7C, 0x16, 0x15 }, //   (101)  Y - 0x00A5 Yen Sign
 141                 { 0x00, 0x00, 0x77, 0x00, 0x00 }, //   (102)  | - 0x00A6 Broken Bar
 142                 { 0x0A, 0x55, 0x55, 0x55, 0x28 }, //   (103)    - 0x00A7 Section Sign
 143                 { 0x00, 0x01, 0x00, 0x01, 0x00 }, //   (104)  " - 0x00A8 Diaeresis
 144                 { 0x00, 0x0A, 0x0D, 0x0A, 0x04 }, //   (105)    - 0x00AA Feminine Ordinal Indicator
 145                 { 0x08, 0x14, 0x2A, 0x14, 0x22 }, //   (106) << - 0x00AB Left-Pointing Double Angle Quotation Mark
 146                 { 0x04, 0x04, 0x04, 0x04, 0x1C }, //   (107)    - 0x00AC Not Sign
 147                 { 0x00, 0x08, 0x08, 0x08, 0x00 }, //   (108)  - - 0x00AD Soft Hyphen
 148                 { 0x01, 0x01, 0x01, 0x01, 0x01 }, //   (109)    - 0x00AF Macron
 149                 { 0x00, 0x02, 0x05, 0x02, 0x00 }, //   (110)    - 0x00B0 Degree Sign
 150                 { 0x44, 0x44, 0x5F, 0x44, 0x44 }, //   (111) +- - 0x00B1 Plus-Minus Sign
 151                 { 0x00, 0x00, 0x04, 0x02, 0x01 }, //   (112)  ` - 0x00B4 Acute Accent
 152                 { 0x7E, 0x20, 0x20, 0x10, 0x3E }, //   (113)  u - 0x00B5 Micro Sign
 153                 { 0x06, 0x0F, 0x7F, 0x00, 0x7F }, //   (114)    - 0x00B6 Pilcrow Sign
 154                 { 0x00, 0x18, 0x18, 0x00, 0x00 }, //   (115)  . - 0x00B7 Middle Dot
 155                 { 0x00, 0x40, 0x50, 0x20, 0x00 }, //   (116)    - 0x00B8 Cedilla
 156                 { 0x00, 0x0A, 0x0D, 0x0A, 0x00 }, //   (117)    - 0x00BA Masculine Ordinal Indicator
 157                 { 0x22, 0x14, 0x2A, 0x14, 0x08 }, //   (118) >> - 0x00BB Right-Pointing Double Angle Quotation Mark
 158                 { 0x17, 0x08, 0x34, 0x2A, 0x7D }, //   (119) /4 - 0x00BC Vulgar Fraction One Quarter
 159                 { 0x17, 0x08, 0x04, 0x6A, 0x59 }, //   (120) /2 - 0x00BD Vulgar Fraction One Half
 160                 { 0x30, 0x48, 0x45, 0x40, 0x20 }, //   (121)  ? - 0x00BE Inverted Question Mark
 161                 { 0x42, 0x00, 0x42, 0x00, 0x42 }, //   (122)    - 0x00BF Horizontal Bargraph - 0 (empty)
 162                 { 0x7E, 0x42, 0x00, 0x42, 0x00 }, //   (123)    - 0x00C0 Horizontal Bargraph - 1
 163                 { 0x7E, 0x7E, 0x00, 0x42, 0x00 }, //   (124)    - 0x00C1 Horizontal Bargraph - 2
 164                 { 0x7E, 0x7E, 0x7E, 0x42, 0x00 }, //   (125)    - 0x00C2 Horizontal Bargraph - 3
 165                 { 0x7E, 0x7E, 0x7E, 0x7E, 0x00 }, //   (126)    - 0x00C3 Horizontal Bargraph - 4
 166                 { 0x7E, 0x7E, 0x7E, 0x7E, 0x7E }, //   (127)    - 0x00C4 Horizontal Bargraph - 5 (full)
 167                 { 0x5A, 0x00, 0x00, 0x00, 0x5A }, //   (128)    - 0x00C5 Vertical Bargraph - 0 (empty)
 168                 { 0x5A, 0x40, 0x40, 0x40, 0x5A }, //   (129)    - 0x00C6 Vertical Bargraph - 1
 169                 { 0x7A, 0x60, 0x60, 0x60, 0x7A }, //   (130)    - 0x00C7 Vertical Bargraph - 2
 170                 { 0x7A, 0x70, 0x70, 0x70, 0x7A }, //   (131)    - 0x00C8 Vertical Bargraph - 3
 171                 { 0x7A, 0x78, 0x78, 0x78, 0x7A }, //   (131)    - 0x00C8 Vertical Bargraph - 4
 172                 { 0x7A, 0x7C, 0x7C, 0x7C, 0x7A }, //   (131)    - 0x00C8 Vertical Bargraph - 5
 173                 { 0x7A, 0x7E, 0x7E, 0x7E, 0x7A }, //   (131)    - 0x00C8 Vertical Bargraph - 6 (full)
 174         };
 175
 176 static bool i2c_OLED_send_cmd(const extDevice_t *dev, uint8_t command)
 177 {
 178     return i2cWrite(dev->bus->busType_u.i2c.device, dev->busType_u.i2c.address, 0x80, command);
 179 }
 180
 181 static bool i2c_OLED_send_cmdarray(const extDevice_t *dev, const uint8_t *commands, size_t len)
 182 {
 183     for (size_t i = 0 ; i < len ; i++) {
 184         if (!i2c_OLED_send_cmd(dev, commands[i])) {
 185             return false;
 186         }
 187     }
 188
 189     return true;
 190 }
 191
 192 static bool i2c_OLED_send_byte(const extDevice_t *dev, uint8_t val)
 193 {
 194     return i2cWrite(dev->bus->busType_u.i2c.device, dev->busType_u.i2c.address, 0x40, val);
 195 }
 196
 197 void i2c_OLED_clear_display_quick(const extDevice_t *dev)
 198 {
 199     static const uint8_t i2c_OLED_cmd_clear_display_quick[] = {
 200         0xb0, // set page address to 0
 201         0x40, // Display start line register to 0
 202         0,    // Set low col address to 0
 203         0x10, // Set high col address to 0
 204     };
 205
 206     i2c_OLED_send_cmdarray(dev, i2c_OLED_cmd_clear_display_quick, ARRAYLEN(i2c_OLED_cmd_clear_display_quick));
 207
 208     for (uint16_t i = 0; i < 1024; i++) {      // fill the display's RAM with graphic... 128*64 pixel picture
 209         i2c_OLED_send_byte(dev, 0x00);  // clear
 210     }
 211 }
 212
 213 void i2c_OLED_clear_display(const extDevice_t *dev)
 214 {
 215     static const uint8_t i2c_OLED_cmd_clear_display_pre[] = {
 216         0xa6, // Set Normal Display
 217         0xae, // Display OFF
 218         0x20, // Set Memory Addressing Mode
 219         0x00, // Set Memory Addressing Mode to Horizontal addressing mode
 220     };
 221
 222     i2c_OLED_send_cmdarray(dev, i2c_OLED_cmd_clear_display_pre, ARRAYLEN(i2c_OLED_cmd_clear_display_pre));
 223
 224     i2c_OLED_clear_display_quick(dev);
 225
 226     static const uint8_t i2c_OLED_cmd_clear_display_post[] = {
 227         0x81, // Setup CONTRAST CONTROL, following byte is the contrast Value... always a 2 byte instruction
 228         200,  // Here you can set the brightness 1 = dull, 255 is very bright
 229         0xaf, // display on
 230     };
 231
 232     i2c_OLED_send_cmdarray(dev, i2c_OLED_cmd_clear_display_post, ARRAYLEN(i2c_OLED_cmd_clear_display_post));
 233 }
 234
 235 void i2c_OLED_set_xy(const extDevice_t *dev, uint8_t col, uint8_t row)
 236 {
 237     uint8_t i2c_OLED_cmd_set_xy[] = {
 238         0xb0 + row,                                            //set page address
 239         0x00 + ((CHARACTER_WIDTH_TOTAL * col) & 0x0f),         //set low col address
 240         0x10 + (((CHARACTER_WIDTH_TOTAL * col) >> 4) & 0x0f)   //set high col address
 241     };
 242
 243     i2c_OLED_send_cmdarray(dev, i2c_OLED_cmd_set_xy, ARRAYLEN(i2c_OLED_cmd_set_xy));
 244 }
 245
 246 void i2c_OLED_set_line(const extDevice_t *dev, uint8_t row)
 247 {
 248     i2c_OLED_set_xy(dev, 0, row);
 249 }
 250
 251 void i2c_OLED_send_char(const extDevice_t *dev, unsigned char ascii)
 252 {
 253     unsigned char i;
 254     uint8_t buffer;
 255     for (i = 0; i < 5; i++) {
 256         buffer = multiWiiFont[ascii - 32][i];
 257         buffer ^= CHAR_FORMAT;  // apply
 258         i2c_OLED_send_byte(dev, buffer);
 259     }
 260     i2c_OLED_send_byte(dev, CHAR_FORMAT);    // the gap
 261 }
 262
 263 void i2c_OLED_send_string(const extDevice_t *dev, const char *string)
 264 {
 265     // Sends a string of chars until null terminator
 266     while (*string) {
 267         i2c_OLED_send_char(dev, *string);
 268         string++;
 269     }
 270 }
 271
 272 /**
 273 * according to http://www.adafruit.com/datasheets/UG-2864HSWEG01.pdf Chapter 4.4 Page 15
 274 */
 275
 276 bool ug2864hsweg01InitI2C(const extDevice_t *dev)
 277 {
 278
 279     // Set display OFF
 280     if (!i2c_OLED_send_cmd(dev, 0xAE)) {
 281         return false;
 282     }
 283
 284     static const uint8_t i2c_OLED_cmd_init[] = {
 285         0xD4, // Set Display Clock Divide Ratio / OSC Frequency
 286         0x80, // Display Clock Divide Ratio / OSC Frequency
 287         0xA8, // Set Multiplex Ratio
 288         0x3F, // Multiplex Ratio for 128x64 (64-1)
 289         0xD3, // Set Display Offset
 290         0x00, // Display Offset
 291         0x40, // Set Display Start Line
 292         0x8D, // Set Charge Pump
 293         0x14, // Charge Pump (0x10 External, 0x14 Internal DC/DC)
 294         0xA1, // Set Segment Re-Map
 295         0xC8, // Set Com Output Scan Direction
 296         0xDA, // Set COM Hardware Configuration
 297         0x12, // COM Hardware Configuration
 298         0x81, // Set Contrast
 299         0xCF, // Contrast
 300         0xD9, // Set Pre-Charge Period
 301         0xF1, // Set Pre-Charge Period (0x22 External, 0xF1 Internal)
 302         0xDB, // Set VCOMH Deselect Level
 303         0x40, // VCOMH Deselect Level
 304         0xA4, // Set all pixels OFF
 305         0xA6, // Set display not inverted
 306         0xAF, // Set display On
 307     };
 308
 309     i2c_OLED_send_cmdarray(dev, i2c_OLED_cmd_init, ARRAYLEN(i2c_OLED_cmd_init));
 310
 311     i2c_OLED_clear_display(dev);
 312
 313     return true;
 314 }
 315 #endif // USE_I2C_OLED_DISPLAY