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Olikraus u8g2 documentation github I can get by using the u8g2_Setup_ssd1312_i2c_128x32_f display configuration for a 132x32 OLED, but the rotation settings don't work well, and the 0,0 origin is outside of my oled window. I was so happy when the u8x8 "Hello World" worked from beginning. h"; The native type for pixel coordinates has changed to u8g2_uint_t. IC is an Atmega64 running at 12 MHz. U8glib library for monochrome displays, version 2 - olikraus/u8g2. I have used the library with a different display before and think it is great. I've been trying to get the graphics library to work with a Atmel ATSAMD20 microcontroller in combination with a NHD 128x64 OLED scree Nov 9, 2020 · Saved searches Use saved searches to filter your results more quickly Sep 19, 2022 · if anyone wants to use u8g2 with RISCV CH32V305/7 microcontrollers. BTW, Interfaces: I2C, SPI, Parallel. Alternative I can just ZIP them up and you can add the under your own Github id. Features: UTF8, >700 fonts, U8x8 char output. But strangely no such function can be found in the (single) u8g2 folder, nor a line explaining that it should be defined. U8g2 also includes U8x8 library: U8g2 Includes all graphics procedures (line/box/circle draw). Enterprises Small and medium teams Startups By use case. 3V). For such a display suitable values for x are 0 to 15. But if I move that declaration out of main to be a global variable, then the xor draws as blocks in the outline of the characters, rather than complete readable letters. CI/CD & Automation 5 days ago · Contribute to olikraus/U8g2_Arduino development by creating an account on GitHub. Notifications Fork 994; Star 4. c at master · olikraus/u8g2 U8glib library for monochrome displays, version 2 - u8g2/csrc/u8g2_bitmap. 1k; Star 5. I try to get your library running with I appreciate for extreme efforts to provide u8g2. Jan 10, 2022 · Documentation GitHub Skills Blog Solutions For. My setup: Display: GMG12864-06D #define CS_PIN PC14 #define RST_PIN PC15 #define RS_PIN PA0 #define SCL_PIN PA5 #define S U8glib library for monochrome displays, version 2 - fntgrpnbp · olikraus/u8g2 Wiki Discussed in #1868 Originally posted by markhen57 May 23, 2022 BuyDisplay have this nice small (low cost!) LCD using the ST7567A with 132x32 glass. 7k. Enterprises Small and medium teams Startups By use case I'm trying to bring up ESP32 with GMG12864 that I have in the spares and encountering several questions using u8g2. c at master · olikraus/u8g2 Hi Olikarus, thanks for the answer, but the problem is, that I was testing u8g2 library earlier, and this lib is not allowing to load long text to OLED memory and scroll it using cursor position with 'for' command. Is there any way to port the original fonts from u8g to u8g2? I noticed that the u8g2_font_tinyunicode_tr one is v Saved searches Use saved searches to filter your results more quickly Saved searches Use saved searches to filter your results more quickly Saved searches Use saved searches to filter your results more quickly U8glib library for monochrome displays, version 2 - u8g2as7 · olikraus/u8g2 Wiki Controller Datasheet: SSD1363. begin(Adafruit_GFX &gfx): Connect to Adafruit GFX U8glib library for monochrome displays, version 2 - u8g2/csrc/u8x8_d_st7586s_erc240160. U8glib library for monochrome displays, version 2 - fntgrpsiji · olikraus/u8g2 Wiki The Sharp Memory LCD Application Guide states: The SPI port should be set up so that, in the idle state, the serial chip select (SCS) and the serial clock (SC) are LOW. Im quite new to OLED displays and ran into a problem thats probably easy to fix. Either way is fine for me. 1k; Star Documentation GitHub Skills Blog Solutions By company size. U8G2_ST7571_128X128_F_3W_HW_SPI u8g2(U8G2_R0, /* cs=/ 10, U8glib library for monochrome displays, version 2 - olikraus/u8g2 I have used the u8g2 library on my STM32 project and I love it! My OLED is based upon the SSD1312 IC, but has only 120x28 pixels. Contribute to olikraus/U8g2_Arduino development by creating an account on GitHub. x will also include big ß) u8g2_xxx_xf: Full: Glyphs with unicode 32 to 255 are included in the font: u8g2_xxx_xr: Restricted: Only characters from 32 to 127 are included: u8g2_xxx_xu: Uppercase: Numbers and uppercase letters: u8g2_xxx_xn Ich sehe: Ich kann das angehängte Dokument nachträglich ändern. There are no compile errors. c at master · olikraus/u8g2. 42" 128x64 display, which works very well with u8g2. U8glib library for monochrome displays, version 2 - fntlist8 · olikraus/u8g2 Wiki. 6 days ago · U8glib library for monochrome displays, version 2 - olikraus/u8g2. If I U8glib library for monochrome displays, version 2 - u8g2/ChangeLog at master · olikraus/u8g2 U8glib library for monochrome displays, version 2 - u8g2/csrc/u8x8_setup. Use our favorite Adafruit graphics library together with fonts from U8g2 project Use our favorite Adafruit graphics library together with fonts from U8g2 project (https://github. Note: There will be no more development for U8glib. Dec 2, 2017 · If my declaration of u8g2 (this line: u8g2_t u8g;) is in the main loop as a local variable, all works perfectly. Use setFont to assign a font before drawing a string on the display. Maintainer - If in doubt, Hmm. c at master · olikraus/u8g2 U8glib library for monochrome displays, version 2 - u8g2/csrc/u8x8_d_sh1107. It is the successor of U8glib which is not developed any further. Enterprise Teams Startups olikraus / u8g2 Public. 16. Unfortunately I became a problem with u8g2 with the Microcontroller "Photon" from Particle. Sep 18, 2024 Download (2. Sign up for GitHub By clicking Apr 8, 2022 · Hallo, @olikraus! Ich bin mal faul/muss mal faul sein, und schreibe auf deutsch, weil ich befürchte, dass wir sonst nicht weiterkommen. Right now, when using U8G2_ST7565_NHD_C12864_1_4W_SW_SPI u8g2 (U8G2_R2, 13, 11, 10, 9); as a constructor it looks like this. This is what I did following the Arduino implementation and avr-libc exampl U8glib library for monochrome displays, version 2 - olikraus/u8g2 U8glib library for monochrome displays, version 2 - u8g2/csrc/u8x8_d_ssd1322. U8glib library for monochrome displays, version 2 - u8g2/csrc/u8x8_d_st7511. h at master · olikraus/u8g2. Nov 14, 2023 · Hi, i recently got two ESP8266MOD boards with onboard 0. Read the documentation. You signed out in another tab or window. Enterprises Small and olikraus / u8g2 Public. Ther is a lot of work in. The E8 command changes the data length in 3-wire mode. 2): https://github. Nothing is shifted and the contrast seems to be fully black on . com/olikraus/U8g2_Arduino/archive/master. 3V, which is ideal for battery-powered projects. Enterprises olikraus / u8g2 Public. Software I2C only for the display isn't an option, because speed and usage of additional pins on the ESP32 (I use already ethernet, CAN, SD card, two I2C lines, RS232 and some relays). 00) is The name of the include file has changed: Use #include "U8g2lib. 7-12864 OLED (SSD1325), right: EA DOGS102 LCD (UC1701) U8glib library for monochrome displays, version 2 - fntgrpgeoff · olikraus/u8g2 Wiki Contribute to olikraus/U8g2_Arduino development by creating an account on GitHub. The OLED is one of those dual color ones with the top row in yellow and the rest blue. setContrast command, but the brightness difference (0-255) is rather Contribute to olikraus/U8g2_Arduino development by creating an account on GitHub. The number of items is 20. Enterprise Teams Startups olikraus opened this issue Jun 1, 2016 · 1 comment Closed U8glib library for monochrome displays, version 2 - fntgrpspleen · olikraus/u8g2 Wiki I'm looking to migrate from u8g to u8g2, but noticed that the fonts are different. Please use u8g2. The U8glib library for monochrome displays, version 2 - Home · olikraus/u8g2 Wiki. 2. A form always starts with the macro MUI_FORM. 71" OLED Display to get a better readabilitywithout glasses than the original 0. I don't get the code compiled with the SSD1312_128x64 (or 128x32) options, with the original SSD1306 I g I've recently bought an Arduino shield for tests with following specs: 3. Contribute to olikraus/U8g2_Arduino development by creating an Add U8g2 fonts to any Adafruit GFX based graphics library. c at master · olikraus/u8g2 You signed in with another tab or window. To draw a character with a code greater than 127, use the C/C++ escape sequence "\xab" (hex value ab) or "\xyz" (octal The name of the include file has changed: Use #include "U8g2lib. signal-2023-12-18-124106. Enterprises olikraus. Automate any workflow Documentation GitHub Skills Blog Solutions By size. Once included, then I'll delete the ESP32 U8g2 samples from my own ESP32 samples Github repository and there will be only a single source of truth, your U8g2 Hi all, I have a question about the update procedure of the u8g2 library. U8glib library for monochrome displays, version 2 - fntlist12 · olikraus/u8g2 Wiki. Navigation Menu Documentation GitHub Skills Blog Solutions By company size. The argument to the E8 must not be constant (as in your example) but instead it should be calculated based on the current values c and arg_int (otherwise it will not work in U8glib library for monochrome displays, version 2 - fntlist12 · olikraus/u8g2 Wiki. Sign in Documentation GitHub Skills Blog Solutions By company size. And the datasheet below UC1601s_A1. 1 day ago · U8glib library for monochrome displays, version 2 - olikraus/u8g2. com/olikraus/u8g2/wiki/fntlistall). Notifications You must be signed in to change notification Thanks for the updates here. here Thank you U8glib library for monochrome displays, version 2 - u8g2/csrc/u8x8_d_uc1701_mini12864. Jan 28, 2021 · Documentation GitHub Skills Blog Solutions By company size olikraus / u8g2 Public. Within it (any many other similar functions) is a call to u8g2_SetupDisplay(). 5 days ago · U8glib library for monochrome displays, version 2 - olikraus/u8g2. Sign in Product GitHub Copilot. U8glib library for monochrome displays, version 2 - fntgrptlwg · olikraus/u8g2 Wiki Note 3: Some fonts may add an extra gap on the right side. Indeed, this is a big problem. DevSecOps DevOps CI/CD I have encountered an issue with the newer CH1120 driver IC, which seems to be replacing the SH1108. Notifications You must be signed in to change notification New issue Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. But there is no C Setup example or introduction (only for C++) so I started t U8glib library for monochrome displays, version 2 - u8x8setupc · olikraus/u8g2 Wiki Saved searches Use saved searches to filter your results more quickly No further access to U8g2 is required. Sign in Documentation GitHub Skills Blog Solutions By size. U8glib library for monochrome displays, version 2 - Issues · olikraus/u8g2 U8glib library for monochrome displays, version 2 - gallery · olikraus/u8g2 Wiki U8glib library for monochrome displays, version 2 - fntlist12 · olikraus/u8g2 Wiki. 00) is Hi Olikarus, thanks for the answer, but the problem is, that I was testing u8g2 library earlier, and this lib is not allowing to load long text to OLED memory and scroll it using cursor position with 'for' command. U8glib library for monochrome displays, version 2 - u8g2/csrc/u8g2_hvline. pdf my setting below static const ui As this workarround has soo many time, I just realized two weird things (that also happend with the jchifos original file) One is that I must set the rotation to U8G2_R2 to get the right orientation, this picture it's made with U8G2_R0 And this initialization line in the code U8G2_SSD1309_128X64_NONAME0_F_HW_I2C u8g2(U8G2_R0) In Arduino IDE, I decided to simply c Documentation GitHub Skills Blog Solutions By company size. c at master · olikraus/u8g2 U8g2 and U8x8 Font Groups; Icon and Symbol Fonts; All U8g2 Fonts; Monospace U8g2 Fonts; All U8x8 Fonts; All U8g2 Fonts (PDF) (might not be up to date, see here for the latest version. 36. Navigation Documentation GitHub Skills Blog Solutions By company size. The Arduino library U8g2 can be installed from the library manager of the Arduino IDE. Toggle navigation. Navigation Menu Toggle Documentation GitHub Skills Blog Solutions By company size. U8g2 Memory Optimization and Feature Selection; Porting to new MCR platform; U8g2 Developer Information; U8g2 Font Format; Windows Font Editor Fony 1. No paramenters are required. Please see How to u8g2_xxx_xe: Extended: Glyphs with unicode 32 to 701 are included in the font (v2. sendBuffer. c at master · olikraus/u8g2 U8glib library for monochrome displays, version 2 - u8g2/csrc/u8x8_d_st7567. I've found out that text scaling support has been added to u8x8 library and it was mentioned that text scaling is not needed in u8g2 library, because fonts with different sizes are provided. Reload to refresh your session. Host and manage packages Documentation GitHub Skills Blog Solutions For. As per your comment in #2298 I've tried the SSD1322 constructor and it does displ Hi all, first of all: @olikraus : THANK YOU VERY MUCH! Thanks for creating and maintaining this library! Sad but true I'm not a great C++ programmer like you. However, I have trouble using u8g2 with Asian characters (like Korean), because there are a lot of glyphs I was hoping to use u8g2 for this 160x32 display, but it uses the SSD1320 controller which is currently not supported. Das ist praktisch. Write better code with AI Documentation GitHub Skills Blog Solutions By size. Healthcare Feb 22, 2022 · What i mean by that is that when i used a particular wrong one, (in this case U8G2_ST7565_KS0713_1_4W_SW_SPI one) that was one of the results i got. h at master · olikraus/u8g2 Then maybe I can fork your project, add those items and issue a pull request. pdf Related Issues: #2298 #2318 Seems this controller/resolution has come up before without proper support being implemented. Nevertheless, I stopped working on e-paper and code will not go into u8g2, so let's keep the comments here, but i will close this issue U8glib library for monochrome displays, version 2 - fntgrpnbp · olikraus/u8g2 Wiki. I would like to use it on my Arduino UNO, Nano r3 and 2560 Rev3 and later on with STM32 as well (Arduinos run on 5V, the STM boards runs on 3. I can actually see the display content updating from top to bottom, which takes about half a second. It works well with "U8G2_ST7567_PI_132X64_F_4W_SW Good afternoon, First, thank you very much for your wonderful work and library. 3" SPI OLED um’s Verrecken nicht richtig gedimmt. Description: Draw a string. Navigation Menu Toggle navigation. The compiler trips up on u8g2_Setup_ssd1306_i2c_128x64_noname_1(). Hi, Not an issue just looking for more info in what would the best way to implement DMA transmission on my port. Nov 27, 2024 · U8glib library for monochrome displays, version 2 - olikraus/u8g2. You switched accounts on another tab or window. Sign in Product Documentation GitHub Skills Blog Solutions By company size. Dann halte ich es auf dem aktuellen Stand. I decided to go with new version (u8g2) with C, not C++. Hi again, Oliver! Just a 2 general questions regarding memory consumption: When do you think it its worth to use Mui functionality? Now i am using it on a Lora32u4 with 32 Kb of memory - already st U8glib library for monochrome displays, version 2 - u8g2/csrc/u8x8_byte. DevSecOps DevOps U8glib library for monochrome displays, version 2 - olikraus/u8g2. A graphics library with support for many different monochrome displays. Documentation GitHub Skills Blog Solutions By company size. c at master · olikraus/u8g2 Saved searches Use saved searches to filter your results more quickly Hi, I have recently started working on a project in which I need to use TI's MCU, MSPM0G3507 and drives 128x32 SSD1316 OLED display through I2C Comms. This library is compatible with all architectures so you should be able to use it on all the Arduino boards. ) Other. I spent some time to figure out what is a suitable subset, but for sure, there is a better subset possible. Write better code with AI Documentation GitHub Skills Blog Solutions By company size. The field is defined with the macro MUI_XYT, which requires the following arguments: "BN": The MUIF identifier for the MUIF callback which should render and handle this field. Which why it is off by default I guess. U8glib V2 library for Arduino. However, the 3-wire mode is just the same as the 4-wire mode, except that the data transfer is prefixed by the E8 command. zip. Sadly, it does react to a u8g2. begin() U8g2log. I’m currently using a LCD with ST75256 (256x160) driver on 4w spi mode on a STM32F3, Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notices appear in all copies and that both those copyright notices and this permission notice appear in supporting documentation, and that the name of "the Institute of Software, Academia Sinica" not be used Saved searches Use saved searches to filter your results more quickly U8glib library for monochrome displays, version 2 - u8g2/csrc/u8x8. Enterprise Teams Startups olikraus opened this issue Jun 26, 2016 · 1 comment Closed Sorry if this is a bothersome question, Is there a way to get the serial print command to automatically also print to U8x8log, instead of having to construct an identical statement of syntax u8x8 // Print a number on the U8g2log window u U8glib library for monochrome displays, version 2 - fntgrpu8g · olikraus/u8g2 Wiki The form definition string (fds) defines all forms along with their fields. Refresh of the screen is handled by U8g2log automatically. This library is U8g2 is a graphics library developed at olikraus/u8g2 with support for many different displays. Using the contribution, I am developing DIY rally computer. begin(): This will connect to U8g2 and assign the static memory; Use U8g2log to print to the display U8glib library for monochrome displays, version 2 - u8g2/cppsrc/MUIU8g2. 7 U8glib library for monochrome displays, version 2 - u8g2/csrc/u8x8_d_st7571. Eine Abschlussarbeit ist das nicht. Sign in Product Actions. Please add the ST7302 display to your li Documentation GitHub Skills Blog Solutions By olikraus / u8g2 Public. See the setup guide for the selection of a suitable U8g2 constructor. The first character is placed in column x and row y. Notifications You must be signed in to change notification settings; Fork 1. I would like to ask the forum what is the best practice timing in the code to command u8g2. h at master · olikraus/u8g2 I got a couple of 256x64 resolution 2" OLED display modules based on the SH1122 controller wired for I2C operation. Code; Issues 170; Pull requests 16; Discussions; Sign up for free to join this conversation on GitHub. Dec 18, 2023 · I am not sure if it is a bug in u8g2 or in Teensyduino's SPI library, but the ST7920 display on the Teensy 4. I am integrating u8g2 into an STM8 project, and use the C codebase. The OLED module looks absolutely the same, has the same pinout (SPI connection) and same resolution (128x160) Despite their similarities Documentation GitHub Skills Blog Solutions By company size. Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notices appear in all copies and that both those copyright notices and this permission notice appear in supporting documentation, and that the name of "the Institute of Software, Academia Sinica" not be used Description: Draw a string. When you use the full buffer mode (f extension in constructor), can it be configured to only update the pixels/bytes which are changed since last time? For example U8glib library for monochrome displays, version 2 - Releases · olikraus/u8g2 void setFontDirection(uint8_t dir) {u8g2_SetFontDirection(&u8g2, dir); } void u8g2_SetFontDirection(u8g2_t *u8g2, Documentation GitHub Skills Blog Solutions For. „Dimmen“ via U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, I2C_2); or something else. To draw a character with a code greater than 127, use the C/C++ escape sequence "\xab" (hex value ab) or "\xyz" (octal I have aquired a 128x32 size, 1. 91" SSD1306 Display. The height of the button is defined by the current font and Total size without shadow: width+2*padding_h+2*border Total size with U8G2_BTN_SHADOW0: width+2 U8glib library for monochrome displays, version 2 - u8g2/csrc/u8x8_d_uc1638. I am seeking assistance in getting u8g2 up and running on a Microchip dsPIC33EP256MU806, hardware I2C interface, and Winstar OLED 128x64 display with SSD1309 controller. looks difficult. Data is clocked on the risin Hello, I was using u8glib (it is really great!) on AVR few years, but now I am working with STM32L1xx. 4" 128 x 64 I2C SSD1309 displays various information such as distance and directions. Healthcare Financial services Feb 21, 2021 · Thanks for that, reading the documentation it sounds a little dangerous. In this example, we will use a ST7920 128x64 display. c at master · olikraus/u8g2 Contribute to olikraus/U8g2_Arduino development by creating an account on GitHub. Skip to content. Description: Simplified setup procedure of the display for the Arduino enviornment. Pri U8glib library for monochrome displays, version 2 - fntlistall · olikraus/u8g2 Wiki Hi I'm trying to use u8g2 and UC1601s 128x64 display on my stm32L496 but it still doesn't work well, does anyone have any experience with UC1601s 128x64 Display ?. U8glib library for monochrome displays, version 2 - olikraus/u8g2 U8glib library for monochrome displays, version 2 - u8g2/csrc/u8x8_d_ssd1306_128x32. 0 shows a lot of corruption with hardware SPI (see video). Sign in Documentation GitHub Skills U8glib V2 library for Arduino. Left: NHD-2. It has a ST7920 Your olikraus repository does not seem to be showing up on github. Enterprises Small and medium Apr 27, 2024 · Hi The display doesn't need a backlight so it's very low power, typically about 30µA at 3. This must be the first command. I tried to reduce the SPI bus clock speed, as well as changing the SPI mode, but without success. but the only thing that worked was "U8G2_ST7567_HEM6432_F_HW_I2C u8g2(U8G2_R0, void u8g2_SetFontRefHeightText(u8g2_t *u8g2); void u8g2_SetFontRefHeightExtendedText Documentation GitHub Skills Blog Solutions By size. Enterprises Small and medium teams Startups By use case u8g2 is a phenomenal piece of work, many thanks for the effort. I have tested these displays with STM32 Nucleo Hy there Thanks a lot for this library for free. This function will reset, configure, clear and disable power save mode of the How to connect a display to U8g2 Library? You need to know the controller and the size of your display (Note: "Controllerless" displays are not supported by U8g2). . Feb 5, 2024 · Saved searches Use saved searches to filter your results more quickly Hi folks, I bought an OLED 2. c at master · olikraus/u8g2 I've been trying to implement hardware SPI on AVR baremetal. I even tried to hardcode SPI speed but nothing is being showed. DevSecOps DevOps CI/CD U8glib library for monochrome displays, version 2 - u8g2/csrc/mui_u8g2. Enterprises Small and medium teams Startups U8glib library for monochrome displays, version 2 - olikraus/u8g2. A graphics display with 128x64 pixel has 16 colums and 8 rows. These displays work fine with u8g2, except their update speed is veeeeery slooooow. c at master · olikraus/u8g2 U8glib library for monochrome displays, version 2 - u8g2/csrc/u8x8_d_ssd1306_128x64_noname. 5. Automate any workflow Packages. In this case there is only one form with the number 1. Just print data to U8g2log. mp4. May 25, 2021 · Hello Everybody, I'm currently using a noname SSD1309 OLED 2. 42 with SSD1309 SPI and now I am quite unsecure how to deal with it. void u8g2_for_adafruit_gfx. 4. Wir kriegen das 1. It seems a reasonable way to implement the functionality. Use the following line to redefine this at the beginning of your code typedef u8g2_uint_t u8g_uint_t; Old Arduino IDE 00xx (before 1. 6 Inch Resolution 240x400 Driver ST7793 Arduino UNO and Mega2560 Resistive Touch LCM Module Product Specification: • Supports development boards such as Arduino UNO U8glib library for monochrome displays, version 2 - gallery · olikraus/u8g2 Wiki U8glib library for monochrome displays, version 2 - fntgrp · olikraus/u8g2 Wiki U8glib library for monochrome displays, version 2 - u8g2install · olikraus/u8g2 Wiki I still have actual HAL code laying around, so adapting C parts to updated ESP-IDF and u8g2 shouldn't be overly hard - it also has an advantage over implementation linked in documentation in that it uses pins passed from u8g2 instead of introducing a separate function for this purpose - this also allows to control multiple displays at once. 3k. However, I don't mind a bit of danger. For comparison a colour TFT display typically takes 20mA. Enterprise Hello, The declaration of U8G2_ST75256_JLX256160_F_HW_I2C has reset pin set to U8X8_PIN_NONE. This is a font problem and can not be avoided (for example inb16 has this problem). The font will bekome very large if i include all the chinese chars, so I decided to add only a subset. Also, it would be nice to have a link to the actual repository to know where to find it for those needing to ad it manually vs using the lib manager. 96" OLED. Steps are: Create U8g2 object; Create U8g2log object; Setup static memory for the text window; U8g2. DevSecOps DevOps 6 days ago · U8glib library for monochrome displays, version 2 - olikraus/u8g2. Enterprise Teams Startups By industry. Healthcare Financial services Dec 22, 2016 · Hello, I've a question on how to implement the graphics library in a project I'm currently working on. Enterprise Teams Startups Education By Solution. Mar 28, 2022. U8G2_FOR_ADAFRUIT_GFX u8g2_for_adafruit_gfx: Constructor call. An opportunity to learn.