SH1107 (128x128) screen offset (BSP-684)

[mutatrum]

Board

ESP32-S3

Hardware Description

• ESP32-S3-WROOM-1
• SH1107 128x128 display (link)

All latest versions:

• espressif/esp_lcd_sh1107 (1.1.0)
• espressif/esp_lvgl_port (2.6.0)
• lvgl/lvgl (9.3.0)
• idf (5.4.1)

IDE Name

vscode

Operating System

Ubuntu 22.04

Description

The display shows an offset, exactly as with olikraus/u8g2#501, about a quarter of the screen to the right and wrapped around.

However, unlike that issue, setting esp_lcd_panel_set_gap to 96,0 as suggested causes screen corruption. I've tested with a lot of gap values, but I can't seem to get the screen aligned.

Sketch

• i2c_oled example
• Update dependencies to above.
• Set resolution to 128x128 in i2c_oled_example_main.c L43:44:

#define EXAMPLE_LCD_H_RES              128
#define EXAMPLE_LCD_V_RES              128

• Adjust lvgl_demo_ui L21:23 to show a border:

    lv_obj_set_width(label, lv_display_get_physical_horizontal_resolution(disp));
    lv_obj_set_height(label, lv_display_get_physical_vertical_resolution(disp));
    lv_obj_set_style_border_width(label, 1, LV_PART_MAIN);
    lv_obj_align(label, LV_ALIGN_CENTER, 0, 0);

For the photo, I also disabled scrolling, this screen is really difficult to photograph, but it's clear the border is wrapped around:

[mutatrum]

Maybe the issue bot can report on this?

[mutatrum]

Ok, follow-up, long overdue. If I change the init register 0xd3 (SH1107_SET_DISP_OFFSET) from 0x60 to 0x00 it works.

esp-bsp/components/lcd/esp_lcd_sh1107/esp_lcd_sh1107.c

Lines 144 to 145 in 82f4381

	0xd3, /* set display offset */
	0x60,

Currently, there's no general method exposed in esp_lcd_port, but maybe it can be added to a vendor specific struct, similar to esp_lcd_panel_ssd1306_config_t for the SSD1306.

[mutatrum]

I just came across #308, which seems to be the same issue.

[mutatrum]

Pinging @espzav, as the author of the SH1107 code.

[espzav]

Hi @mutatrum,
I am so sorry for late reply, I am really busy.
Thank you very much for this info, I will update it soon. I must test it on HW before change it.