Discussed in <a class="issue-link js-issue-link" data-error-text="Failed to load titl

Hi, <a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url=

SH1107 128x128 OLED text jumbled around about u8g2 HOT 6 OPEN

chauens commented on June 27, 2024

SH1107 128x128 OLED text jumbled around

from u8g2.

Comments (6)

chauens commented on June 27, 2024

I need to add: the option to define SDA and SCL pins is not an issue. Just connect the OLED where Adafruit wants it. But I want to be able to use the "screen saver" which Adafruit does not seem to have.

from u8g2.

olikraus commented on June 27, 2024

The reference position for the string is the lower left corner of the glyphs (baseline) as you can see in the example image here: https://github.com/olikraus/u8g2/wiki/u8g2reference#drawstr

This can be change with the font-position functions: https://github.com/olikraus/u8g2/wiki/u8g2reference#setfontpostop

Wrap around effects can be avoided by putting u8g2 into 16 bit mode (see FAQ https://github.com/olikraus/u8g2/blob/master/doc/faq.txt). 16 Bit mode is automatically activated with ESP32.

from u8g2.

chauens commented on June 27, 2024

Thank you for your reply. I have read the documentation. And according to it and your comments the following lines of code should show the following as it actually does in the first working example: OLED display 128x64: U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, U8X8_PIN_NONE, 22, 21); u8g2.setFont(u8g2_font_ncenB14_tr); u8g2.drawStr(0,15,"Hello World!"); displays as expected: Hello World! Not working example: OLED dislay 128x128: U8G2_SH1107_128X128_F_HW_I2C u8g2(U8G2_R0, U8X8_PIN_NONE, 22, 21); u8g2.setFont(u8g2_font_ncenB14_tr); u8g2.drawStr(0,15,"Hello World!"); displays: lo World! Hel I hope this explains the problem I am encountering a little better. I provided screen shots in attached files. Please advise. Thank you. Christoph

…

________________________________ From: olikraus ***@***.***> Sent: Tuesday, April 23, 2024 11:04 PM To: olikraus/u8g2 ***@***.***> Cc: chauens ***@***.***>; Author ***@***.***> Subject: Re: [olikraus/u8g2] SH1107 128x128 OLED text jumbled around (Issue #2433) The reference position for the string is the lower left corner of the glyphs (baseline) as you can see in the example image here: https://github.com/olikraus/u8g2/wiki/u8g2reference#drawstr This can be change with the font-position functions: https://github.com/olikraus/u8g2/wiki/u8g2reference#setfontpostop Wrap around effects can be avoided by putting u8g2 into 16 bit mode (see FAQ https://github.com/olikraus/u8g2/blob/master/doc/faq.txt). 16 Bit mode is automatically activated with ESP32. — Reply to this email directly, view it on GitHub<#2433 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/A4F33R5VCJCJ4XMH3SYXFEDY644MPAVCNFSM6AAAAABGTGED4OVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDANZUGAZTINJQHE>. You are receiving this because you authored the thread.

from u8g2.

chauens commented on June 27, 2024

Using the Adafruit_SH110X.h and Adafruit_GFX.h libraries provides the solution to the problem as well as a "screen saver" as I just found out. So I wil go this route.
I leave this open for now for you to decide wether this can be fixed. I don't think I'm doing anything wrong or missed something. See my previous comment. Thank you

from u8g2.

xray-bit commented on June 27, 2024

Hi, @chauens, I got the same problem.

the default display config for sh1107_128x128 has a big x offset (check L519-520):

u8g2/csrc/u8x8_d_sh1107.c

Lines 501 to 523 in 3e86287

 static const u8x8_display_info_t u8x8_sh1107_128x128_display_info = 

 { 

 /* chip_enable_level = */ 0, 

 /* chip_disable_level = */ 1, 

 /* post_chip_enable_wait_ns = */ 20, 

 /* pre_chip_disable_wait_ns = */ 10, 

 /* reset_pulse_width_ms = */ 100, /* */ 

 /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */ 

 /* sda_setup_time_ns = */ 100, /* cycle time is 100ns, so use 100/2 */ 

 /* sck_pulse_width_ns = */ 100, /* cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */ 

 /* sck_clock_hz = */ 4000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */ 

 /* spi_mode = */ 0, /* active high, rising edge */ 

 /* i2c_bus_clock_100kHz = */ 4, 

 /* data_setup_time_ns = */ 40, 

 /* write_pulse_width_ns = */ 150, /* sh1107: cycle time is 300ns, so use 300/2 = 150 */ 

 /* tile_width = */ 16, 

 /* tile_height = */ 16, 

 /* default_x_offset = */ 96, 

 /* flipmode_x_offset = */ 96, 

 /* pixel_width = */ 128, 

 /* pixel_height = */ 128 

 };

you can try to use pimoroni's config or seeed's config :

u8g2/csrc/u8x8_d_sh1107.c

Lines 600 to 622 in 3e86287

 static const u8x8_display_info_t u8x8_sh1107_pimoroni_128x128_display_info = 

 { 

 /* chip_enable_level = */ 0, 

 /* chip_disable_level = */ 1, 

 /* post_chip_enable_wait_ns = */ 20, 

 /* pre_chip_disable_wait_ns = */ 10, 

 /* reset_pulse_width_ms = */ 100, /* */ 

 /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */ 

 /* sda_setup_time_ns = */ 100, /* cycle time is 100ns, so use 100/2 */ 

 /* sck_pulse_width_ns = */ 100, /* cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */ 

 /* sck_clock_hz = */ 4000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */ 

 /* spi_mode = */ 0, /* active high, rising edge */ 

 /* i2c_bus_clock_100kHz = */ 4, 

 /* data_setup_time_ns = */ 40, 

 /* write_pulse_width_ns = */ 150, /* sh1107: cycle time is 300ns, so use 300/2 = 150 */ 

 /* tile_width = */ 16, 

 /* tile_height = */ 16, 

 /* default_x_offset = */ 0, 

 /* flipmode_x_offset = */ 0, 

 /* pixel_width = */ 128, 

 /* pixel_height = */ 128 

 };

I don't use Arduino, but I think you can try to use U8G2_SH1107_PIMORONI_128X128_F_HW_I2C instead of U8G2_SH1107_128X128_F_HW_I2C for initialization

from u8g2.

chauens commented on June 27, 2024

Hi, thank you for the tip, that appears to be very helpful. I will try that.
Meanwhile I went back to using a 128x64 display because it actually is physically wider. I would need to use a smaller font to display the same number of characters per line on the 128x128 OLED... at least on the one I got, making it harder to read.
So it may take some time until I get around to do another test with 128x128 OLED.

from u8g2.

SH1107 128x128 OLED text jumbled around about u8g2 HOT 6 OPEN

Comments (6)

Related Issues (20)

Recommend Projects

React

Vue.js

Typescript

TensorFlow

Django

Laravel

D3

Recommend Topics

javascript

web

server

Machine learning

Visualization

Game

Recommend Org

Facebook

Microsoft

Google

Alibaba

D3

Tencent

	static const u8x8_display_info_t u8x8_sh1107_128x128_display_info =
	{
	/* chip_enable_level = */ 0,
	/* chip_disable_level = */ 1,

	/* post_chip_enable_wait_ns = */ 20,
	/* pre_chip_disable_wait_ns = */ 10,
	/* reset_pulse_width_ms = / 100, / */
	/* post_reset_wait_ms = / 100, / far east OLEDs need much longer setup time */
	/* sda_setup_time_ns = / 100, / cycle time is 100ns, so use 100/2 */
	/* sck_pulse_width_ns = / 100, / cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
	/* sck_clock_hz = / 4000000UL, / since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */
	/* spi_mode = / 0, / active high, rising edge */
	/* i2c_bus_clock_100kHz = */ 4,
	/* data_setup_time_ns = */ 40,
	/* write_pulse_width_ns = / 150, / sh1107: cycle time is 300ns, so use 300/2 = 150 */
	/* tile_width = */ 16,
	/* tile_height = */ 16,
	/* default_x_offset = */ 96,
	/* flipmode_x_offset = */ 96,
	/* pixel_width = */ 128,
	/* pixel_height = */ 128
	};