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olikraus / u8glib

Arduino Monochrom Graphics Library for LCDs and OLEDs
https://github.com/olikraus/u8glib/wiki
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Incompatibility with Arduino NANO EVERY board #500

Closed michelfrance78 closed 4 years ago

michelfrance78 commented 4 years ago

Hello, The U8glib library is incompatible with the new Arduino NANO EVERY board. Is an update planned for this likely replacement board of the basic NANO ?

olikraus commented 4 years ago

Compatibility was one reason why I started u8g2. Can you check the newer u8g2 lib?

michelfrance78 commented 4 years ago

Thank you for your fast reply. I did not know this new library. I was able to migrate all my code from a basic Nano card to a Nano Every card. I only noticed that compared to the U8glib library, the scrolling texts are about 4 to 5 times slower. Cordially.  

Message du 01/11/19 07:25 De : "olikraus" A : "olikraus/u8glib" Copie à : "michelfrance78" , "Author" Objet : Re: [olikraus/u8glib] Incompatibility with Arduino NANO EVERY board (#500)

Compatibility was one reason why I started u8g2. Can you check the newer u8g2 lib?

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olikraus commented 4 years ago

You mean u8g2 is slower?

michelfrance78 commented 4 years ago

Yes I could compare on the vertical scrolling of 3 texts between a configuration Nano basic rev. 3 with U8g vs Nano Every with U8g2. The speed of scrolling is of the order of 4 to 5 times slower in the second case. Here are the extracts of the codes (I2C configuration) :

  1. Nano basic + U8glib :

include

include "U8glib.h"

... U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NO_ACK); ... for (int a = 0; a < 20; a++) { u8g.firstPage(); do { u8g.setFont(u8g_font_fub11); u8g.setFontRefHeightExtendedText(); u8g.setDefaultForegroundColor(); u8g.setFontPosTop(); u8g.setPrintPos(2, a); u8g.print(F("TEXTE1")); u8g.setPrintPos(2, a+16); u8g.print(F("TEXTE2")); u8g.setPrintPos(2, a+32); u8g.print(F("TEXTE3")); } while (u8g.nextPage()); } delay(3000); ...

  1. Nano Every + U8g2 :

include

include

//#ifdef U8X8_HAVE_HW_SPI

include

//#endif //#ifdef U8X8_HAVE_HW_I2C

include

//#endif ... U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, / clock=/ SCL, / data=/ SDA, / reset=/ U8X8_PIN_NONE); // All Boards without Reset of the Display ... u8g2.clearBuffer(); u8g2.setFont(u8g2_font_fub11_tf); for (int a = 0; a < 20; a++) { u8g2.clearBuffer(); u8g2.setCursor(2, 11+a); u8g2.print("TEXTE1"); u8g2.setCursor(2, 27+a); u8g2.print("TEXTE2"); u8g2.setCursor(2, 45+a); u8g2.print("TEXTE3"); u8g2.sendBuffer(); } delay(3000); ...

For other functions I did not compare because the speed is perfect for my projects. For information, here are also the results of the small performance test FPS given in the examples of the U8g2 library :

 

 

 

Message du 01/11/19 23:21 De : "olikraus" A : "olikraus/u8glib" Copie à : "michelfrance78" , "Author" Objet : Re: [olikraus/u8glib] Incompatibility with Arduino NANO EVERY board (#500)

You mean u8g2 is slower?

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olikraus commented 4 years ago

You should use HW_I2C instead of SW_I2C. However, there is a problem with the Arduino IDE and the NANO EVERY HAL implementation, which actually breaks HW I2C support: https://github.com/olikraus/u8g2/issues/987

I do not know when I will have time to look for a fix here, but it is probably the best to follow the above mentioned issue.

michelfrance78 commented 4 years ago

Indeed when I use HW_I2C I get a scrolling speed probably even faster than my old configuration Nano Basic + U8Glib. I consider my question totally resolved. My project is now fully migrated to a Nano Every + U8g2lib configuration. I thank you for your prompt assistance. Sincerely.