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GxEPD2_display_selection_new_style.h

GxEPD2_display_selection_new_style.h 14 KB
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  1. // Display Library example for SPI e-paper panels from Dalian Good Display and boards from Waveshare.
    2. 

  2. // Requires HW SPI and Adafruit_GFX. Caution: the e-paper panels require 3.3V supply AND data lines!
    3. 

  3. //
    4. 

  4. // Display Library based on Demo Example from Good Display: http://www.e-paper-display.com/download_list/downloadcategoryid=34&isMode=false.html
    5. 

  5. //
    6. 

  6. // Author: Jean-Marc Zingg
    7. 

  7. //
    8. 

  8. // Version: see library.properties
    9. 

  9. //
    10. 

  10. // Library: https://github.com/ZinggJM/GxEPD2
    11. 

  11. 

  12. // Supporting Arduino Forum Topics:
    13. 

  13. // Waveshare e-paper displays with SPI: http://forum.arduino.cc/index.php?topic=487007.0
    14. 

  14. // Good Display ePaper for Arduino: https://forum.arduino.cc/index.php?topic=436411.0
    15. 

  15. 

  16. // select the display class (only one), matching the kind of display panel
    17. 

  17. #define GxEPD2_DISPLAY_CLASS GxEPD2_BW
    18. 

  18. //#define GxEPD2_DISPLAY_CLASS GxEPD2_3C
    19. 

  19. //#define GxEPD2_DISPLAY_CLASS GxEPD2_7C
    20. 

  20. 

  21. // select the display driver class (only one) for your  panel
    22. 

  22. //#define GxEPD2_DRIVER_CLASS GxEPD2_102     // GxEPD2_102   80x128, UC8175
    23. 

  23. //#define GxEPD2_DRIVER_CLASS GxEPD2_154     // GDEP015OC1  200x200, IL3829, no longer available
    24. 

  24. //#define GxEPD2_DRIVER_CLASS GxEPD2_154_D67 // GDEH0154D67 200x200, SSD1681
    25. 

  25. //#define GxEPD2_DRIVER_CLASS GxEPD2_154_T8  // GDEW0154T8  152x152, UC8151 (IL0373)
    26. 

  26. //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M09 // GDEW0154M09 200x200, JD79653A
    27. 

  27. //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M10 // GDEW0154M10 152x152, UC8151D
    28. 

  28. //#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   128x250, IL3895, phased out
    29. 

  29. //#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 128x250, SSD1675A (IL3897)
    30. 

  30. //#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 128x250, SSD1675B
    31. 

  31. //#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 128x250, SSD1680
    32. 

  32. //#define GxEPD2_DRIVER_CLASS GxEPD2_213_flex // GDEW0213I5F 104x212, UC8151 (IL0373)
    33. 

  33. //#define GxEPD2_DRIVER_CLASS GxEPD2_213_M21 // GDEW0213M21 104x212, UC8151 (IL0373)
    34. 

  34. //#define GxEPD2_DRIVER_CLASS GxEPD2_213_T5D // GDEW0213T5D 104x212, UC8151D
    35. 

  35. //#define GxEPD2_DRIVER_CLASS GxEPD2_290     // GDEH029A1   128x296, SSD1608 (IL3820)
    36. 

  36. //#define GxEPD2_DRIVER_CLASS GxEPD2_290_T5  // GDEW029T5   128x296, UC8151 (IL0373)
    37. 

  37. //#define GxEPD2_DRIVER_CLASS GxEPD2_290_T5D // GDEW029T5D  128x296, UC8151D
    38. 

  38. //#define GxEPD2_DRIVER_CLASS GxEPD2_290_I6FD // GDEW029I6FD  128x296, UC8151D
    39. 

  39. //#define GxEPD2_DRIVER_CLASS GxEPD2_290_T94 // GDEM029T94  128x296, SSD1680
    40. 

  40. //#define GxEPD2_DRIVER_CLASS GxEPD2_290_T94_V2 // GDEM029T94  128x296, SSD1680, Waveshare 2.9" V2 variant
    41. 

  41. //#define GxEPD2_DRIVER_CLASS GxEPD2_290_M06 // GDEW029M06  128x296, UC8151 (IL0373)
    42. 

  42. //#define GxEPD2_DRIVER_CLASS GxEPD2_260     // GDEW026T0   152x296, UC8151 (IL0373)
    43. 

  43. //#define GxEPD2_DRIVER_CLASS GxEPD2_260_M01 // GDEW026M01  152x296, UC8151 (IL0373)
    44. 

  44. //#define GxEPD2_DRIVER_CLASS GxEPD2_270     // GDEW027W3   176x264, EK79652 (IL91874)
    45. 

  45. //#define GxEPD2_DRIVER_CLASS GxEPD2_371     // GDEW0371W7  240x416, UC8171 (IL0324)
    46. 

  46. //#define GxEPD2_DRIVER_CLASS GxEPD2_420     // GDEW042T2   400x300, UC8176 (IL0398)
    47. 

  47. //#define GxEPD2_DRIVER_CLASS GxEPD2_420_M01 // GDEW042M01  400x300, UC8176 (IL0398)
    48. 

  48. //#define GxEPD2_DRIVER_CLASS GxEPD2_583     // GDEW0583T7  600x448, UC8179 (IL0371)
    49. 

  49. //#define GxEPD2_DRIVER_CLASS GxEPD2_583_T8  // GDEW0583T8  648x480, GD7965
    50. 

  50. //#define GxEPD2_DRIVER_CLASS GxEPD2_750     // GDEW075T8   640x384, UC8179 (IL0371)
    51. 

  51. //#define GxEPD2_DRIVER_CLASS GxEPD2_750_T7  // GDEW075T7   800x480, GD7965
    52. 

  52. //#define GxEPD2_DRIVER_CLASS GxEPD2_1160_T91 // GDEH116T91 960x640, SSD1677
    53. 

  53. //#define GxEPD2_DRIVER_CLASS GxEPD2_1248     // GDEW1248T3  1303x984, UC8179
    54. 

  54. // 3-color e-papers
    55. 

  55. //#define GxEPD2_DRIVER_CLASS GxEPD2_154c     // GDEW0154Z04 200x200, IL0376F, no longer available
    56. 

  56. //#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200, SSD1681
    57. 

  57. //#define GxEPD2_DRIVER_CLASS GxEPD2_213c     // GDEW0213Z16 104x212, UC8151 (IL0373)
    58. 

  58. //#define GxEPD2_DRIVER_CLASS GxEPD2_213_Z19c // GDEW0213Z19 104x212, UC8151D
    59. 

  59. //#define GxEPD2_DRIVER_CLASS GxEPD2_290c     // GDEW029Z10  128x296, UC8151 (IL0373)
    60. 

  60. //#define GxEPD2_DRIVER_CLASS GxEPD2_290_Z13c // GDEH029Z13  128x296, UC8151D
    61. 

  61. //#define GxEPD2_DRIVER_CLASS GxEPD2_290_C90c // GDEM029C90  128x296, SSD1680
    62. 

  62. //#define GxEPD2_DRIVER_CLASS GxEPD2_270c     // GDEW027C44  176x264, IL91874
    63. 

  63. //#define GxEPD2_DRIVER_CLASS GxEPD2_420c     // GDEW042Z15  400x300, UC8176 (IL0398)
    64. 

  64. //#define GxEPD2_DRIVER_CLASS GxEPD2_420c_Z21 // GDEQ042Z21  400x300, UC8276
    65. 

  65. //#define GxEPD2_DRIVER_CLASS GxEPD2_583c     // GDEW0583Z21 600x448, UC8179 (IL0371)
    66. 

  66. //#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  640x384, UC8179 (IL0371)
    67. 

  67. //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480, GD7965
    68. 

  68. //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528, SSD1677
    69. 

  69. // 7-color e-paper
    70. 

  70. //#define GxEPD2_DRIVER_CLASS GxEPD2_565c // Waveshare 5.65" 7-color (3C graphics)
    71. 

  71. // grey levels parallel IF e-papers on Waveshare e-Paper IT8951 Driver HAT
    72. 

  72. //#define GxEPD2_DRIVER_CLASS GxEPD2_it60           // ED060SCT 800x600
    73. 

  73. //#define GxEPD2_DRIVER_CLASS GxEPD2_it60_1448x1072 // ED060KC1 1448x1072
    74. 

  74. //#define GxEPD2_DRIVER_CLASS GxEPD2_it78_1872x1404 // ED078KC2 1872x1404
    75. 

  75. 

  76. // SS is usually used for CS. define here for easy change
    77. 

  77. #ifndef EPD_CS
    78. 

  78. #define EPD_CS SS
    79. 

  79. #endif
    80. 

  80. 

  81. #if defined(GxEPD2_DISPLAY_CLASS) && defined(GxEPD2_DRIVER_CLASS)
    82. 

  82. 

  83. // somehow there should be an easier way to do this
    84. 

  84. #define GxEPD2_BW_IS_GxEPD2_BW true
    85. 

  85. #define GxEPD2_3C_IS_GxEPD2_3C true
    86. 

  86. #define GxEPD2_7C_IS_GxEPD2_7C true
    87. 

  87. #define GxEPD2_1248_IS_GxEPD2_1248 true
    88. 

  88. #define IS_GxEPD(c, x) (c##x)
    89. 

  89. #define IS_GxEPD2_BW(x) IS_GxEPD(GxEPD2_BW_IS_, x)
    90. 

  90. #define IS_GxEPD2_3C(x) IS_GxEPD(GxEPD2_3C_IS_, x)
    91. 

  91. #define IS_GxEPD2_7C(x) IS_GxEPD(GxEPD2_7C_IS_, x)
    92. 

  92. #define IS_GxEPD2_1248(x) IS_GxEPD(GxEPD2_1248_IS_, x)
    93. 

  93. 

  94. #include "GxEPD2_selection_check.h"
    95. 

  95. 

  96. #if defined (ESP8266)
    97. 

  97. #define MAX_DISPLAY_BUFFER_SIZE (81920ul-34000ul-5000ul) // ~34000 base use, change 5000 to your application use
    98. 

  98. #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
    99. 

  99. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
    100. 

  100. #elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
    101. 

  101. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
    102. 

  102. #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
    103. 

  103. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
    104. 

  104. #endif
    105. 

  105. // adapt the constructor parameters to your wiring
    106. 

  106. GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=D8*/ EPD_CS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
    107. 

  107. // mapping of Waveshare e-Paper ESP8266 Driver Board, new version
    108. 

  108. //GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=15*/ EPD_CS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5));
    109. 

  109. // mapping of Waveshare e-Paper ESP8266 Driver Board, old version
    110. 

  110. //GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=15*/ EPD_CS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16));
    111. 

  111. #endif
    112. 

  112. 

  113. #if defined(ESP32)
    114. 

  114. #define MAX_DISPLAY_BUFFER_SIZE 65536ul // e.g.
    115. 

  115. #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
    116. 

  116. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
    117. 

  117. #elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
    118. 

  118. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
    119. 

  119. #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
    120. 

  120. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
    121. 

  121. #endif
    122. 

  122. // adapt the constructor parameters to your wiring
    123. 

  123. #if !IS_GxEPD2_1248(GxEPD2_DRIVER_CLASS)
    124. 

  124. #if defined(ARDUINO_LOLIN_D32_PRO)
    125. 

  125. GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=5*/ EPD_CS, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
    126. 

  126. #elif defined(ARDUINO_ESP32_DEV) // e.g. TTGO T8 ESP32-WROVER
    127. 

  127. GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=5*/ EPD_CS, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
    128. 

  128. #else
    129. 

  129. GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=5*/ EPD_CS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4));
    130. 

  130. #endif
    131. 

  131. #else // GxEPD2_1248
    132. 

  132. // Waveshare 12.48 b/w SPI display board and frame or Good Display 12.48 b/w panel GDEW1248T3
    133. 

  133. // general constructor for use with all parameters, e.g. for Waveshare ESP32 driver board mounted on connection board
    134. 

  134. GxEPD2_BW < GxEPD2_1248, GxEPD2_1248::HEIGHT / 4 > display(GxEPD2_1248(/*sck=*/ 13, /*miso=*/ 12, /*mosi=*/ 14,
    135. 

  135.     /*cs_m1=*/ 23, /*cs_s1=*/ 22, /*cs_m2=*/ 16, /*cs_s2=*/ 19,
    136. 

  136.     /*dc1=*/ 25, /*dc2=*/ 17, /*rst1=*/ 33, /*rst2=*/ 5,
    137. 

  137.     /*busy_m1=*/ 32, /*busy_s1=*/ 26, /*busy_m2=*/ 18, /*busy_s2=*/ 4));
    138. 

  138. #endif
    139. 

  139. #endif
    140. 

  140. 

  141. // can't use package "STMF1 Boards (STM32Duino.com)" (Roger Clark) anymore with Adafruit_GFX, use "STM32 Boards (selected from submenu)" (STMicroelectronics)
    142. 

  142. #if defined(ARDUINO_ARCH_STM32)
    143. 

  143. #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
    144. 

  144. #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
    145. 

  145. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
    146. 

  146. #elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
    147. 

  147. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
    148. 

  148. #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
    149. 

  149. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
    150. 

  150. #endif
    151. 

  151. // adapt the constructor parameters to your wiring
    152. 

  152. GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=PA4*/ EPD_CS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1));
    153. 

  153. #endif
    154. 

  154. 

  155. #if defined(__AVR)
    156. 

  156. #if defined (ARDUINO_AVR_MEGA2560) // Note: SS is on 53 on MEGA
    157. 

  157. #define MAX_DISPLAY_BUFFER_SIZE 5000 // e.g. full height for 200x200
    158. 

  158. #else // Note: SS is on 10 on UNO, NANO
    159. 

  159. #define MAX_DISPLAY_BUFFER_SIZE 800 // 
    160. 

  160. #endif
    161. 

  161. #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
    162. 

  162. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
    163. 

  163. #elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
    164. 

  164. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
    165. 

  165. #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
    166. 

  166. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
    167. 

  167. #endif
    168. 

  168. // adapt the constructor parameters to your wiring
    169. 

  169. GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
    170. 

  170. #endif
    171. 

  171. 

  172. #if defined(ARDUINO_ARCH_SAM)
    173. 

  173. #define MAX_DISPLAY_BUFFER_SIZE 32768ul // e.g., up to 96k
    174. 

  174. #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
    175. 

  175. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
    176. 

  176. #elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
    177. 

  177. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
    178. 

  178. #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
    179. 

  179. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
    180. 

  180. #endif
    181. 

  181. // adapt the constructor parameters to your wiring
    182. 

  182. GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=10*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
    183. 

  183. #endif
    184. 

  184. 

  185. #if defined(ARDUINO_ARCH_SAMD)
    186. 

  186. #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
    187. 

  187. #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
    188. 

  188. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
    189. 

  189. #elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
    190. 

  190. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
    191. 

  191. #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
    192. 

  192. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
    193. 

  193. #endif
    194. 

  194. // adapt the constructor parameters to your wiring
    195. 

  195. GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
    196. 

  196. //GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=4*/ 4, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // my Seed XIOA0
    197. 

  197. //GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=4*/ 3, /*DC=*/ 2, /*RST=*/ 1, /*BUSY=*/ 0)); // my other Seed XIOA0
    198. 

  198. #endif
    199. 

  199. 

  200. #if defined(ARDUINO_ARCH_RP2040)
    201. 

  201. #define MAX_DISPLAY_BUFFER_SIZE 131072ul // e.g. half of available ram
    202. 

  202. #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
    203. 

  203. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
    204. 

  204. #elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
    205. 

  205. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
    206. 

  206. #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
    207. 

  207. #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
    208. 

  208. #endif
    209. 

  209. // adapt the constructor parameters to your wiring
    210. 

  210. GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
    211. 

  211. #endif
    212. 

  212. 

  213. #endif
    214.