SSD1322 and teensy 3.5/3.6 connections

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urbanspaceman

Well-known member
Hi, i have a 256x64 display with SSD1322 controller
Connection are GND,Vcc, Clk, Din,Res, Dc, En
Can someone help me plese to connect this display at my teensy?
Thanks
 
Thanks defragster
additional informations, i have this pins available

2 3 4 5 8 20 24 25 26 27 29 30 31 32 gnd A22

Assuming this
connections can be

Display -> Teensy
GND -> GND
VCC -> 3.3v
CLK -> 20
DIN -> is this Miso? (pin 8)
RES -> ?
DC -> ?
EN -> ?
 
Teensy card shows pin 8 as possible alternate MISO for SPI0. Hopefully other pins can be found on the linked thread or pointed to Github.

EN might be CS - chip select? And RES may be RESET? DC may be SCK for system Clock?
 
Indeed probably is. 4/3 just suggests it doesn't need the MISO as it is write only. So the DIN would be MOSI to Teensy not MISO - for SPI0 MOSI needs pin 11 or 7 or 28?
 
ok, I do not have any of these free pins.
I try to see if I can free one but I also have the audioboard installed ...
 
You don't say what else beside Audio is taking pins - is there another SPI device? If another compatible SPI device is on SPI0 pins - they can share the bus, they just need a unique CS pin and perhaps IIRC pullups on the CLK and CS pins.
 
Sorry Defragster...
but i'm a noob on this SPI...

i have tried this

Display -> Teensy
Gnd -> Gnd
3.3 -> 3.3
clk -> 20
din -> 28
res -> nothing
dc -> 31
en -> 32


i'm confused... definitely i need help
I tried with the helloworld example of the u8g2 library

here i'm lost...
//U8G2_SSD1322_NHD_256X64_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8); // Enable U8G2_16BIT in u8g2.h
//U8G2_SSD1322_NHD_256X64_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8); // Enable U8G2_16BIT in u8g2.h
 
Was hoping a minute to point the right direction would help.

For more help knowing what else is on those pins is needed? Is there anything else using SPI?

It seems the Audioboard page shows details on connecting alternate SPI as it uses some of the pins.

Do you have a second Teensy you can just test the display to work on with it's known examples and standard pins? If not you should get one or disconnect the other one to see it work as desired - that will help appreciate how it works and what is needed to see it work.
 
26220876_10215313639782514_9056691691407135776_o.jpg

on Breadboard, works
Connection when on breadboard

//U8G2_SSD1322_NHD_256X64_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8); // Enable U8G2_16BIT in u8g2.h

on PCB
doesn't work

//U8G2_SSD1322_NHD_256X64_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 20, /* data=*/ 28, /* cs=*/ 31, /* dc=*/ 32, /* reset=*/ 8); // Enable U8G2_16BIT in u8g2.h
 
That is a good sign - did you try the sumotoy linked code? I used that for 9163 128x128 and it was fast and good.

Pin 20 shows as 2nd SCK1 - for SPI1 - may not be valid for use on SPI0 - same with pin 31 being CS1 not CS0 ???
 
26685620_10215313872708337_1562910289088763952_o.jpg

ok, the matrix should be off...
but the display works! (and i don't know why..)

U8G2_SSD1322_NHD_256X64_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 20, /* data=*/ 28, /* cs=*/ 27, /* dc=*/ 31, /* reset=*/ 8); // Enable U8G2_16BIT in u8g2.h
 
Now the display works with the graphic example sketch present on the u8g2 library
but it flickering... i think is slow refresh effects.

initialization is done with this U8G2_SSD1322_NHD_256X64_F_4W_SW_SPI u8g2(U8G2_R2, 20, 28, 27,31,8);

Code:
/*

  GraphicsTest.ino

  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)

  Copyright (c) 2016, olikraus@gmail.com
  All rights reserved.

  Redistribution and use in source and binary forms, with or without modification, 
  are permitted provided that the following conditions are met:

  * Redistributions of source code must retain the above copyright notice, this list 
    of conditions and the following disclaimer.
    
  * Redistributions in binary form must reproduce the above copyright notice, this 
    list of conditions and the following disclaimer in the documentation and/or other 
    materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  

*/

#include <Arduino.h>
#include <U8g2lib.h>

#ifdef U8X8_HAVE_HW_SPI
#include <SPI.h>
#endif
#ifdef U8X8_HAVE_HW_I2C
#include <Wire.h>
#endif


/*
  U8glib Example Overview:
    Frame Buffer Examples: clearBuffer/sendBuffer. Fast, but may not work with all Arduino boards because of RAM consumption
    Page Buffer Examples: firstPage/nextPage. Less RAM usage, should work with all Arduino boards.
    U8x8 Text Only Example: No RAM usage, direct communication with display controller. No graphics, 8x8 Text only.
    
  This is a page buffer example.    
*/

// Please UNCOMMENT one of the contructor lines below
// U8g2 Contructor List (Picture Loop Page Buffer)
// The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
// Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
//U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
//U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1306_128X64_NONAME_1_3W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* reset=*/ 8);
//U8G2_SSD1306_128X64_NONAME_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
//U8G2_SSD1306_128X64_ALT0_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);   // same as the NONAME variant, but may solve the "every 2nd line skipped" problem
//U8G2_SSD1306_128X64_NONAME_1_SW_I2C u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* reset=*/ 8);
//U8G2_SSD1306_128X64_NONAME_1_SW_I2C u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);   // All Boards without Reset of the Display
//U8G2_SSD1306_128X64_NONAME_1_SW_I2C u8g2(U8G2_R0, /* clock=*/ 16, /* data=*/ 17, /* reset=*/ U8X8_PIN_NONE);   // ESP32 Thing, pure SW emulated I2C
//U8G2_SSD1306_128X64_NONAME_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE, /* clock=*/ 16, /* data=*/ 17);   // ESP32 Thing, HW I2C with pin remapping
//U8G2_SSD1306_128X64_NONAME_1_6800 u8g2(U8G2_R0, 13, 11, 2, 3, 4, 5, 6, A4, /*enable=*/ 7, /*cs=*/ 10, /*dc=*/ 9, /*reset=*/ 8);
//U8G2_SSD1306_128X64_NONAME_1_8080 u8g2(U8G2_R0, 13, 11, 2, 3, 4, 5, 6, A4, /*enable=*/ 7, /*cs=*/ 10, /*dc=*/ 9, /*reset=*/ 8);
//U8G2_SSD1306_128X64_VCOMH0_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// same as the NONAME variant, but maximizes setContrast() range
//U8G2_SSD1306_128X64_ALT0_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// same as the NONAME variant, but may solve the "every 2nd line skipped" problem
//U8G2_SH1106_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SH1106_128X64_NONAME_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
//U8G2_SH1106_128X64_VCOMH0_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);		// same as the NONAME variant, but maximizes setContrast() range
//U8G2_SH1106_128X64_WINSTAR_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);		// same as the NONAME variant, but uses updated SH1106 init sequence
//U8G2_SSD1306_128X32_UNIVISION_1_SW_I2C u8g2(U8G2_R0, /* clock=*/ 21, /* data=*/ 20, /* reset=*/ U8X8_PIN_NONE);   // Adafruit Feather M0 Basic Proto + FeatherWing OLED
//U8G2_SSD1306_128X32_UNIVISION_1_SW_I2C u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);   // Adafruit Feather ESP8266/32u4 Boards + FeatherWing OLED
//U8G2_SSD1306_128X32_UNIVISION_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);   // Adafruit ESP8266/32u4/ARM Boards + FeatherWing OLED
//U8G2_SSD1306_128X32_UNIVISION_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE, /* clock=*/ SCL, /* data=*/ SDA);   // pin remapping with ESP8266 HW I2C
//U8G2_SSD1306_64X48_ER_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);   // EastRising 0.66" OLED breakout board, Uno: A4=SDA, A5=SCL, 5V powered
//U8G2_SSD1306_64X32_NONAME_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
//U8G2_SSD1306_64X32_1F_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
//U8G2_SSD1306_96X16_ER_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);   // EastRising 0.69" OLED 
//U8G2_SSD1322_NHD_256X64_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// Enable U8G2_16BIT in u8g2.h
//U8G2_SSD1322_NHD_256X64_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// Enable U8G2_16BIT in u8g2.h
//U8G2_SSD1322_NHD_128X64_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1322_NHD_128X64_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1325_NHD_128X64_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1325_NHD_128X64_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1326_ER_256X32_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);         // experimental driver for ER-OLED018-1
//U8G2_SSD1327_SEEED_96X96_1_SW_I2C u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);	// Seeedstudio Grove OLED 96x96
//U8G2_SSD1327_SEEED_96X96_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);	// Seeedstudio Grove OLED 96x96
//U8G2_SSD1327_MIDAS_128X128_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1327_MIDAS_128X128_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1329_128X96_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1329_128X96_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1305_128X32_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1305_128X32_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1309_128X64_NONAME0_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  
//U8G2_SSD1309_128X64_NONAME0_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  
//U8G2_SSD1309_128X64_NONAME2_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  
//U8G2_SSD1309_128X64_NONAME2_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  
//U8G2_LD7032_60X32_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 11, /* data=*/ 12, /* cs=*/ 9, /* dc=*/ 10, /* reset=*/ 8);	// SW SPI Nano Board
//U8G2_LD7032_60X32_1_4W_SW_I2C u8g2(U8G2_R0, /* clock=*/ 11, /* data=*/ 12, /* reset=*/ U8X8_PIN_NONE);	// NOT TESTED!
//U8G2_UC1701_EA_DOGS102_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_UC1701_EA_DOGS102_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_PCD8544_84X48_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// Nokia 5110 Display
//U8G2_PCD8544_84X48_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);						// Nokia 5110 Display
//U8G2_PCF8812_96X65_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// Could be also PCF8814
//U8G2_PCF8812_96X65_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);						// Could be also PCF8814
//U8G2_KS0108_128X64_1 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18, /*dc=*/ 17, /*cs0=*/ 14, /*cs1=*/ 15, /*cs2=*/ U8X8_PIN_NONE, /* reset=*/  U8X8_PIN_NONE); 	// Set R/W to low!
//U8G2_KS0108_ERM19264_1 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18, /*dc=*/ 17, /*cs0=*/ 14, /*cs1=*/ 15, /*cs2=*/ 16, /* reset=*/  U8X8_PIN_NONE); 	// Set R/W to low!
//U8G2_ST7920_192X32_1_8080 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18, /*cs=*/ U8X8_PIN_NONE, /*dc=*/ 17, /*reset=*/ U8X8_PIN_NONE);
//U8G2_ST7920_192X32_1_SW_SPI u8g2(U8G2_R0, /* clock=*/ 18 /* A4 */ , /* data=*/ 16 /* A2 */, /* CS=*/ 17 /* A3 */, /* reset=*/ U8X8_PIN_NONE);
//U8G2_ST7920_128X64_1_8080 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18 /* A4 */, /*cs=*/ U8X8_PIN_NONE, /*dc/rs=*/ 17 /* A3 */, /*reset=*/ 15 /* A1 */);	// Remember to set R/W to 0 
//U8G2_ST7920_128X64_1_SW_SPI u8g2(U8G2_R0, /* clock=*/ 18 /* A4 */ , /* data=*/ 16 /* A2 */, /* CS=*/ 17 /* A3 */, /* reset=*/ U8X8_PIN_NONE);
//U8G2_ST7920_128X64_1_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* CS=*/ 10, /* reset=*/ 8);
//U8G2_ST7920_128X64_1_HW_SPI u8g2(U8G2_R0, /* CS=*/ 10, /* reset=*/ 8);
//U8G2_ST7565_EA_DOGM128_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_EA_DOGM128_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_64128N_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_64128N_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_EA_DOGM132_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ U8X8_PIN_NONE);	// DOGM132 Shield
//U8G2_ST7565_EA_DOGM132_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ U8X8_PIN_NONE);	// DOGM132 Shield
//U8G2_ST7565_ZOLEN_128X64_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_ZOLEN_128X64_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_LM6059_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);		// Adafruit ST7565 GLCD
//U8G2_ST7565_LM6059_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);			// Adafruit ST7565 GLCD
//U8G2_ST7565_ERC12864_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_ERC12864_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_NHD_C12832_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_NHD_C12832_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_NHD_C12864_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_NHD_C12864_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7567_PI_132X64_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 7, /* dc=*/ 9, /* reset=*/ 8);  // Pax Instruments Shield, LCD_BL=6
//U8G2_ST7567_PI_132X64_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 7, /* dc=*/ 9, /* reset=*/ 8);  // Pax Instruments Shield, LCD_BL=6
//U8G2_ST7567_JLX12864_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 7, /* dc=*/ 9, /* reset=*/ 8);  
//U8G2_ST7567_JLX12864_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 7, /* dc=*/ 9, /* reset=*/ 8);  
//U8G2_ST75256_JLX172104_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST75256_JLX172104_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST75256_JLX256128_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// Enable U8g2 16 bit mode for this display
//U8G2_ST75256_JLX256128_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);				// Enable U8g2 16 bit mode for this display
//U8G2_ST75256_JLX25664_1_2ND_HW_I2C u8g2(U8G2_R0, /* reset=*/ 8);	// Due, 2nd I2C, enable U8g2 16 bit mode for this display
//U8G2_NT7534_TG12864R_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  
//U8G2_NT7534_TG12864R_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  
//U8G2_ST7588_JLX12864_1_SW_I2C u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ 5);  
//U8G2_ST7588_JLX12864_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ 5);
//U8G2_IST3020_ERC19264_1_6800 u8g2(U8G2_R0, 44, 43, 42, 41, 40, 39, 38, 37,  /*enable=*/ 28, /*cs=*/ 32, /*dc=*/ 30, /*reset=*/ 31); // Connect WR pin with GND
//U8G2_IST3020_ERC19264_1_8080 u8g2(U8G2_R0, 44, 43, 42, 41, 40, 39, 38, 37,  /*enable=*/ 29, /*cs=*/ 32, /*dc=*/ 30, /*reset=*/ 31); // Connect RD pin with 3.3V
//U8G2_IST3020_ERC19264_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_LC7981_160X80_1_6800 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect RW with GND
//U8G2_LC7981_160X160_1_6800 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect RW with GND
//U8G2_LC7981_240X128_1_6800 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect RW with GND
//U8G2_SED1520_122X32_1 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*dc=*/ A0, /*e1=*/ A3, /*e2=*/ A2, /* reset=*/  A4); 	// Set R/W to low!
//U8G2_T6963_240X128_1_8080 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect RD with +5V, FS0 and FS1 with GND
//U8G2_T6963_256X64_1_8080 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect RD with +5V, FS0 and FS1 with GND
//U8G2_SED1330_240X128_1_8080 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect /RD = E with +5V, enable is /WR = RW, FG with GND, 14=Uno Pin A0
//U8G2_SED1330_240X128_1_6800 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7,  /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // A0 is dc pin, /WR = RW = GND, enable is /RD = E
//U8G2_RA8835_NHD_240X128_1_8080 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect /RD = E with +5V, enable is /WR = RW, FG with GND, 14=Uno Pin A0
//U8G2_RA8835_NHD_240X128_1_6800 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7,  /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // A0 is dc pin, /WR = RW = GND, enable is /RD = E
//U8G2_UC1601_128X32_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8); 
//U8G2_UC1601_128X32_1_3W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* reset=*/ 8);
//U8G2_UC1604_JLX19264_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8); 
//U8G2_UC1604_JLX19264_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  
//U8G2_UC1608_ERC24064_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  // SW SPI, Due ERC24064-1 Test Setup
//U8G2_UC1608_ERC240120_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8); 
//U8G2_UC1608_240X128_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  // SW SPI, Due ERC24064-1 Test Setup
//U8G2_UC1610_EA_DOGXL160_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  U8X8_PIN_NONE);
//U8G2_UC1610_EA_DOGXL160_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  U8X8_PIN_NONE);
//U8G2_UC1611_EA_DOGM240_1_2ND_HW_I2C u8g2(U8G2_R0, /* reset=*/ 8);	// Due, 2nd I2C, DOGM240 Test Board
//U8G2_UC1611_EA_DOGM240_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);   // SW SPI, Due DOGXL240 Test Board
//U8G2_UC1611_EA_DOGXL240_1_2ND_HW_I2C u8g2(U8G2_R0, /* reset=*/ 8);	// Due, 2nd I2C, DOGXL240 Test Board
//U8G2_UC1611_EA_DOGXL240_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);   // SW SPI, Due DOGXL240 Test Board
//U8G2_UC1611_EW50850_1_8080 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7,  /*enable=*/ 18, /*cs=*/ 3, /*dc=*/ 16, /*reset=*/ 16); // 240x160, Connect RD/WR1 pin with 3.3V, CS is aktive high
//U8G2_UC1638_160X128_1_4W_HW_SPI u8g2(U8G2_R2, /* cs=*/ 2, /* dc=*/ 3, /* reset=*/ 4);  // Not tested 
//U8G2_SSD1606_172X72_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);		// eInk/ePaper Display
//U8G2_SSD1607_200X200_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// eInk/ePaper Display, original LUT from embedded artists
//U8G2_IL3820_296X128_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// WaveShare 2.9 inch eInk/ePaper Display, enable 16 bit mode for this display!
//U8G2_IL3820_V2_296X128_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// ePaper Display, lesser flickering and faster speed, enable 16 bit mode for this display!
//U8G2_SSD1322_NHD_256X64_F_4W_SW_SPI u8g2(U8G2_R2, /* clock=*/ 20, /* data=*/ 28, /* cs=*/ 27, /* dc=*/ 31, /* reset=*/ 8);  // Enable U8G2_16BIT in u8g2.h
U8G2_SSD1322_NHD_256X64_1_4W_SW_SPI u8g2(U8G2_R2, 20, 28, 27,31,8);



// End of constructor list


void u8g2_prepare(void) {
  u8g2.setFont(u8g2_font_6x10_tf);
  u8g2.setFontRefHeightExtendedText();
  u8g2.setDrawColor(1);
  u8g2.setFontPosTop();
  u8g2.setFontDirection(0);
}

void u8g2_box_title(uint8_t a) {
  u8g2.drawStr( 10+a*2, 5, "U8g2");
  u8g2.drawStr( 10, 20, "GraphicsTest");
  
  u8g2.drawFrame(0,0,u8g2.getDisplayWidth(),u8g2.getDisplayHeight() );
}

void u8g2_box_frame(uint8_t a) {
  u8g2.drawStr( 0, 0, "drawBox");
  u8g2.drawBox(5,10,20,10);
  u8g2.drawBox(10+a,15,30,7);
  u8g2.drawStr( 0, 30, "drawFrame");
  u8g2.drawFrame(5,10+30,20,10);
  u8g2.drawFrame(10+a,15+30,30,7);
}

void u8g2_disc_circle(uint8_t a) {
  u8g2.drawStr( 0, 0, "drawDisc");
  u8g2.drawDisc(10,18,9);
  u8g2.drawDisc(24+a,16,7);
  u8g2.drawStr( 0, 30, "drawCircle");
  u8g2.drawCircle(10,18+30,9);
  u8g2.drawCircle(24+a,16+30,7);
}

void u8g2_r_frame(uint8_t a) {
  u8g2.drawStr( 0, 0, "drawRFrame/Box");
  u8g2.drawRFrame(5, 10,40,30, a+1);
  u8g2.drawRBox(50, 10,25,40, a+1);
}

void u8g2_string(uint8_t a) {
  u8g2.setFontDirection(0);
  u8g2.drawStr(30+a,31, " 0");
  u8g2.setFontDirection(1);
  u8g2.drawStr(30,31+a, " 90");
  u8g2.setFontDirection(2);
  u8g2.drawStr(30-a,31, " 180");
  u8g2.setFontDirection(3);
  u8g2.drawStr(30,31-a, " 270");
}

void u8g2_line(uint8_t a) {
  u8g2.drawStr( 0, 0, "drawLine");
  u8g2.drawLine(7+a, 10, 40, 55);
  u8g2.drawLine(7+a*2, 10, 60, 55);
  u8g2.drawLine(7+a*3, 10, 80, 55);
  u8g2.drawLine(7+a*4, 10, 100, 55);
}

void u8g2_triangle(uint8_t a) {
  uint16_t offset = a;
  u8g2.drawStr( 0, 0, "drawTriangle");
  u8g2.drawTriangle(14,7, 45,30, 10,40);
  u8g2.drawTriangle(14+offset,7-offset, 45+offset,30-offset, 57+offset,10-offset);
  u8g2.drawTriangle(57+offset*2,10, 45+offset*2,30, 86+offset*2,53);
  u8g2.drawTriangle(10+offset,40+offset, 45+offset,30+offset, 86+offset,53+offset);
}

void u8g2_ascii_1() {
  char s[2] = " ";
  uint8_t x, y;
  u8g2.drawStr( 0, 0, "ASCII page 1");
  for( y = 0; y < 6; y++ ) {
    for( x = 0; x < 16; x++ ) {
      s[0] = y*16 + x + 32;
      u8g2.drawStr(x*7, y*10+10, s);
    }
  }
}

void u8g2_ascii_2() {
  char s[2] = " ";
  uint8_t x, y;
  u8g2.drawStr( 0, 0, "ASCII page 2");
  for( y = 0; y < 6; y++ ) {
    for( x = 0; x < 16; x++ ) {
      s[0] = y*16 + x + 160;
      u8g2.drawStr(x*7, y*10+10, s);
    }
  }
}

void u8g2_extra_page(uint8_t a)
{
  u8g2.drawStr( 0, 0, "Unicode");
  u8g2.setFont(u8g2_font_unifont_t_symbols);
  u8g2.setFontPosTop();
  u8g2.drawUTF8(0, 24, "☀ ☁");
  switch(a) {
    case 0:
    case 1:
    case 2:
    case 3:
      u8g2.drawUTF8(a*3, 36, "☂");
      break;
    case 4:
    case 5:
    case 6:
    case 7:
      u8g2.drawUTF8(a*3, 36, "☔");
      break;
  }
}

void u8g2_xor(uint8_t a) {
  uint8_t i;
  u8g2.drawStr( 0, 0, "XOR");
  u8g2.setFontMode(1);
  u8g2.setDrawColor(2);
  for( i = 0; i < 5; i++)
  {
    u8g2.drawBox(10+i*16, 18 + (i&1)*4, 21,31);
  }
  u8g2.drawStr( 5+a, 19, "XOR XOR XOR XOR");
  u8g2.setDrawColor(0);
  u8g2.drawStr( 5+a, 29, "CLR CLR CLR CLR");
  u8g2.setDrawColor(1);
  u8g2.drawStr( 5+a, 39, "SET SET SET SET");
  u8g2.setFontMode(0);
    
}

#define cross_width 24
#define cross_height 24
static const unsigned char cross_bits[] U8X8_PROGMEM  = {
  0x00, 0x18, 0x00, 0x00, 0x24, 0x00, 0x00, 0x24, 0x00, 0x00, 0x42, 0x00, 
  0x00, 0x42, 0x00, 0x00, 0x42, 0x00, 0x00, 0x81, 0x00, 0x00, 0x81, 0x00, 
  0xC0, 0x00, 0x03, 0x38, 0x3C, 0x1C, 0x06, 0x42, 0x60, 0x01, 0x42, 0x80, 
  0x01, 0x42, 0x80, 0x06, 0x42, 0x60, 0x38, 0x3C, 0x1C, 0xC0, 0x00, 0x03, 
  0x00, 0x81, 0x00, 0x00, 0x81, 0x00, 0x00, 0x42, 0x00, 0x00, 0x42, 0x00, 
  0x00, 0x42, 0x00, 0x00, 0x24, 0x00, 0x00, 0x24, 0x00, 0x00, 0x18, 0x00, };

#define cross_fill_width 24
#define cross_fill_height 24
static const unsigned char cross_fill_bits[] U8X8_PROGMEM  = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x18, 0x64, 0x00, 0x26, 
  0x84, 0x00, 0x21, 0x08, 0x81, 0x10, 0x08, 0x42, 0x10, 0x10, 0x3C, 0x08, 
  0x20, 0x00, 0x04, 0x40, 0x00, 0x02, 0x80, 0x00, 0x01, 0x80, 0x18, 0x01, 
  0x80, 0x18, 0x01, 0x80, 0x00, 0x01, 0x40, 0x00, 0x02, 0x20, 0x00, 0x04, 
  0x10, 0x3C, 0x08, 0x08, 0x42, 0x10, 0x08, 0x81, 0x10, 0x84, 0x00, 0x21, 
  0x64, 0x00, 0x26, 0x18, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, };

#define cross_block_width 14
#define cross_block_height 14
static const unsigned char cross_block_bits[] U8X8_PROGMEM  = {
  0xFF, 0x3F, 0x01, 0x20, 0x01, 0x20, 0x01, 0x20, 0x01, 0x20, 0x01, 0x20, 
  0xC1, 0x20, 0xC1, 0x20, 0x01, 0x20, 0x01, 0x20, 0x01, 0x20, 0x01, 0x20, 
  0x01, 0x20, 0xFF, 0x3F, };

void u8g2_bitmap_overlay(uint8_t a) {
  uint8_t frame_size = 28;

  u8g2.drawStr(0, 0, "Bitmap overlay");

  u8g2.drawStr(0, frame_size + 12, "Solid / transparent");
  u8g2.setBitmapMode(false /* solid */);
  u8g2.drawFrame(0, 10, frame_size, frame_size);
  u8g2.drawXBMP(2, 12, cross_width, cross_height, cross_bits);
  if(a & 4)
    u8g2.drawXBMP(7, 17, cross_block_width, cross_block_height, cross_block_bits);

  u8g2.setBitmapMode(true /* transparent*/);
  u8g2.drawFrame(frame_size + 5, 10, frame_size, frame_size);
  u8g2.drawXBMP(frame_size + 7, 12, cross_width, cross_height, cross_bits);
  if(a & 4)
    u8g2.drawXBMP(frame_size + 12, 17, cross_block_width, cross_block_height, cross_block_bits);
}

void u8g2_bitmap_modes(uint8_t transparent) {
  const uint8_t frame_size = 24;

  u8g2.drawBox(0, frame_size * 0.5, frame_size * 5, frame_size);
  u8g2.drawStr(frame_size * 0.5, 50, "Black");
  u8g2.drawStr(frame_size * 2, 50, "White");
  u8g2.drawStr(frame_size * 3.5, 50, "XOR");
  
  if(!transparent) {
    u8g2.setBitmapMode(false /* solid */);
    u8g2.drawStr(0, 0, "Solid bitmap");
  } else {
    u8g2.setBitmapMode(true /* transparent*/);
    u8g2.drawStr(0, 0, "Transparent bitmap");
  }
  u8g2.setDrawColor(0);// Black
  u8g2.drawXBMP(frame_size * 0.5, 24, cross_width, cross_height, cross_bits);
  u8g2.setDrawColor(1); // White
  u8g2.drawXBMP(frame_size * 2, 24, cross_width, cross_height, cross_bits);
  u8g2.setDrawColor(2); // XOR
  u8g2.drawXBMP(frame_size * 3.5, 24, cross_width, cross_height, cross_bits);
}

uint8_t draw_state = 0;

void draw(void) {
  u8g2_prepare();
  switch(draw_state >> 3) {
    case 0: u8g2_box_title(draw_state&7); break;
    case 1: u8g2_box_frame(draw_state&7); break;
    case 2: u8g2_disc_circle(draw_state&7); break;
    case 3: u8g2_r_frame(draw_state&7); break;
    case 4: u8g2_string(draw_state&7); break;
    case 5: u8g2_line(draw_state&7); break;
    case 6: u8g2_triangle(draw_state&7); break;
    case 7: u8g2_ascii_1(); break;
    case 8: u8g2_ascii_2(); break;
    case 9: u8g2_extra_page(draw_state&7); break;
    case 10: u8g2_xor(draw_state&7); break;
    case 11: u8g2_bitmap_modes(0); break;
    case 12: u8g2_bitmap_modes(1); break;
    case 13: u8g2_bitmap_overlay(draw_state&7); break;
  }
}


void setup(void) {

  /* U8g2 Project: SSD1306 Test Board */
  //pinMode(10, OUTPUT);
  //pinMode(9, OUTPUT);
  //digitalWrite(10, 0);
  //digitalWrite(9, 0);		

  /* U8g2 Project: T6963 Test Board */
  //pinMode(18, OUTPUT);
  //digitalWrite(18, 1);	

  /* U8g2 Project: KS0108 Test Board */
  //pinMode(16, OUTPUT);
  //digitalWrite(16, 0);	

  u8g2.begin();
  //u8g2.setFlipMode(0);
}

void loop(void) {
  // picture loop  
  u8g2.clearBuffer();
  u8g2.firstPage();  
  do {
    draw();
  } while( u8g2.nextPage() );
  
  // increase the state
  draw_state++;
  if ( draw_state >= 14*8 )
    draw_state = 0;

  // delay between each page
  delay(150);

}
 
That looks odd for sure. What does this do: while( u8g2.nextPage() );
How many pages are there? Is all the data on one page? Or is a page a part of the screen? Perhaps it is blanking the screen drawing some # of pages then finishes on the page with data?
 
this is my code

Code:
#include <Arduino.h>
#include <U8g2lib.h>
#include <ht16k33.h>
#include <Wire.h>
#include "i2cEncoderLib.h"

#include <SPI.h>

U8G2_SSD1322_NHD_256X64_F_4W_SW_SPI u8g2(U8G2_R2, /* clock=*/ 20, /* data=*/ 28, /* cs=*/ 27, /* dc=*/ 31, /* reset=*/ 8);  // Enable U8G2_16BIT in u8g2.h

HT16K33 HT;

int8_t startScreen;

//encoder
const int IntPin = 29;
i2cEncoderLib encoder(0x34); //Initialize the I2C encoder class with the I2C address 0x30 is the address with all the jumper open
int32_t counter;
uint8_t encoder_status;

//int enc =  i2cEncoderLib(0x31);





// Lookup table of key codes to characters.
void setup() {
  pinMode(IntPin, INPUT);
  HT.begin(0x00);
  u8g2.begin();

  Serial.begin(57600);
  Serial.println("setup");
  int startScreen = 4; /* 0 = SPLASH, 1 = LOOP, 2 = FX1, 3 = FX2, 4 = AMP */
  //selectFunction(startScreen);
      drawAmpScreen();

  encoder.begin((INTE_ENABLE | LEDE_ENABLE | WRAP_DISABLE | DIRE_RIGHT | IPUP_ENABLE | RMOD_X1 ));
  encoder.writeCounter(0);
  encoder.writeMax(100); //Set maximum threshold
  encoder.writeMin(0); //Set minimum threshold
  encoder.writeLEDA(0x00);
  encoder.writeLEDB(0x00);
}


void loop(void) {
  if (encoder.readStatus()) {
    counter = encoder.readCounterByte();
    u8g2.setCursor(24, 45);
    u8g2.setFont(u8g2_font_9x15B_tn); // choose a suitable font
    u8g2.print(counter);
    u8g2.sendBuffer();
  }
}

/* draw screen */
/* draw screen */
void   drawControlScreen(String p1, String p2, String p3, String p4, int v1, int v2, int v3, int v4) {

  //u8g2.clearBuffer();          // clear the internal memory
  u8g2.setFont(u8g2_font_haxrcorp4089_tr); // choose a suitable font
  u8g2.drawCircle(32, 40, 20);
  u8g2.setCursor(22, 10);
  u8g2.print(p1);
  u8g2.setCursor(24, 45);
  u8g2.setFont(u8g2_font_9x15B_tn); // choose a suitable font
  u8g2.print(v1);

  u8g2.drawCircle(96, 40, 20);
  u8g2.setCursor(76, 10);
  u8g2.setFont(u8g2_font_haxrcorp4089_tr); // choose a suitable font
  u8g2.print(p2);
  u8g2.setCursor(89, 45);
  u8g2.setFont(u8g2_font_9x15B_tn); // choose a suitable font
  u8g2.print(v2);

  u8g2.drawCircle(160, 40, 20);
  u8g2.setCursor(145, 10);
  u8g2.setFont(u8g2_font_haxrcorp4089_tr); // choose a suitable font
  u8g2.print(p3);
  u8g2.setCursor(153, 45);
  u8g2.setFont(u8g2_font_9x15B_tn); // choose a suitable font
  u8g2.print(v3);

  u8g2.drawCircle(222, 40, 20);
  u8g2.setCursor(208, 10);
  u8g2.setFont(u8g2_font_haxrcorp4089_tr); // choose a suitable font
  u8g2.print(p4);
  u8g2.setCursor(215, 45);
  u8g2.setFont(u8g2_font_9x15B_tn); // choose a suitable font
  u8g2.print(v4);

}

void drawAmpScreen() {
  u8g2.clearBuffer();          // clear the internal memory
  u8g2.setFont(u8g2_font_haxrcorp4089_tr); // choose a suitable font
  u8g2.drawStr(0, 10, "AMP"); // write something to the internal memory

  drawControlScreen("Pitch", "BitReducer", "Reverb", "Decay", 10, 20, 30, 40);
  u8g2.sendBuffer();
}
 
Last edited:
What calls included these not shown in loop(): drawControlScreen and drawAmpScreen?

Guessing that this:
Code:
void loop(void) {
  if (encoder.readStatus()) {
    counter = encoder.readCounterByte();

Is resulting in a large number of updates? Or is that only true on 'change' to encoder? How long before it settles during/after a change? Perhaps a delay(500) in that loop would show a something?
 
Setup call drawAmpScreen
drawAmpScreen call drawControlScreen with some parameters

every 'tick' of the encoder cause the refresh of the dispaly, one tick = one refresh as shown in the video

this is the complete code

Code:
#include <Arduino.h>
#include <U8g2lib.h>
#include <ht16k33.h>
#include <Wire.h>
#include "i2cEncoderLib.h"

#include <SPI.h>

U8G2_SSD1322_NHD_256X64_F_4W_SW_SPI u8g2(U8G2_R2, /* clock=*/ 20, /* data=*/ 28, /* cs=*/ 27, /* dc=*/ 31, /* reset=*/ 8);  // Enable U8G2_16BIT in u8g2.h

HT16K33 HT;

int8_t startScreen;

//encoder
const int IntPin = 29;
i2cEncoderLib encoder(0x34); //Initialize the I2C encoder class with the I2C address 0x30 is the address with all the jumper open
int32_t counter;
uint8_t encoder_status;

//int enc =  i2cEncoderLib(0x31);





// Lookup table of key codes to characters.
void setup() {
  pinMode(IntPin, INPUT);
  HT.begin(0x00);
  u8g2.begin();

  Serial.begin(57600);
  Serial.println("setup");
  int startScreen = 4; /* 0 = SPLASH, 1 = LOOP, 2 = FX1, 3 = FX2, 4 = AMP */
  //selectFunction(startScreen);
      drawAmpScreen();

  encoder.begin((INTE_ENABLE | LEDE_ENABLE | WRAP_DISABLE | DIRE_RIGHT | IPUP_ENABLE | RMOD_X1 ));
  encoder.writeCounter(0);
  encoder.writeMax(100); //Set maximum threshold
  encoder.writeMin(0); //Set minimum threshold
  encoder.writeLEDA(0x00);
  encoder.writeLEDB(0x00);
}


void loop(void) {
  if (encoder.readStatus()) {
    counter = encoder.readCounterByte();
    u8g2.setCursor(24, 45);
    u8g2.setFont(u8g2_font_9x15B_tn); // choose a suitable font
    u8g2.print(counter);
      u8g2.sendBuffer();

  }
}


/* draw screen */
void   drawControlScreen(String p1, String p2, String p3, String p4, int v1, int v2, int v3, int v4) {

  //u8g2.clearBuffer();          // clear the internal memory
  u8g2.setFont(u8g2_font_haxrcorp4089_tr); // choose a suitable font
  u8g2.drawCircle(32, 40, 20);
  u8g2.setCursor(22, 10);
  u8g2.print(p1);
  u8g2.setCursor(24, 45);
  u8g2.setFont(u8g2_font_9x15B_tn); // choose a suitable font
  u8g2.print(v1);

  u8g2.drawCircle(96, 40, 20);
  u8g2.setCursor(76, 10);
  u8g2.setFont(u8g2_font_haxrcorp4089_tr); // choose a suitable font
  u8g2.print(p2);
  u8g2.setCursor(89, 45);
  u8g2.setFont(u8g2_font_9x15B_tn); // choose a suitable font
  u8g2.print(v2);

  u8g2.drawCircle(160, 40, 20);
  u8g2.setCursor(145, 10);
  u8g2.setFont(u8g2_font_haxrcorp4089_tr); // choose a suitable font
  u8g2.print(p3);
  u8g2.setCursor(153, 45);
  u8g2.setFont(u8g2_font_9x15B_tn); // choose a suitable font
  u8g2.print(v3);

  u8g2.drawCircle(222, 40, 20);
  u8g2.setCursor(208, 10);
  u8g2.setFont(u8g2_font_haxrcorp4089_tr); // choose a suitable font
  u8g2.print(p4);
  u8g2.setCursor(215, 45);
  u8g2.setFont(u8g2_font_9x15B_tn); // choose a suitable font
  u8g2.print(v4);

}


void drawAmpScreen() {
  u8g2.clearBuffer();          // clear the internal memory
  u8g2.setFont(u8g2_font_haxrcorp4089_tr); // choose a suitable font
  u8g2.drawStr(0, 10, "AMP"); // write something to the internal memory

  drawControlScreen("Pitch", "BitReducer", "Reverb", "Decay", 10, 20, 30, 40);
  u8g2.sendBuffer();
}
 
I want to try the spi hardware version but it doesn't works for me..

Works
U8G2_SSD1322_NHD_256X64_F_4W_SW_SPI u8g2(U8G2_R2, /* clock=*/ 20, /* data=*/ 28, /* cs=*/ 27, /* dc=*/ 31, /* reset=*/ 8); // Enable U8G2_16BIT in u8g2.h

don't work..
U8G2_SSD1322_NHD_256X64_F_4W_HW_SPI u8g2(U8G2_R2, /* cs=*/ 27,/* dc=*/ 31, /* reset=*/ 8); // Enable U8G2_16BIT in u8g2.h

any advice?
 
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