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Fix large blacklevel step. Lower 25% of shades are now accessible.

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There is a large step in brightness from level zero to level one.
After experimenting with various ST7789 options, I found that
decreasing VDV to 0x10 (-0.4V) fixes this issue.

The gamma change reduced the average error in brightness, but with the
underlying issue fixed, the gamma change has been reverted.
This commit is contained in:
Riku Isokoski
2022-04-26 13:09:30 +03:00
parent b31fbb4adb
commit 8061822f0c
9 changed files with 16 additions and 14 deletions
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src/displayapp/screens/settings/QuickSettings.cpp
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@@ -49,7 +49,7 @@ QuickSettings::QuickSettings(Pinetime::Applications::DisplayApp* app,
lv_style_init(&btn_style);
lv_style_set_radius(&btn_style, LV_STATE_DEFAULT, buttonHeight / 4);
lv_style_set_bg_color(&btn_style, LV_STATE_DEFAULT, LV_COLOR_MAKE(0x1c, 0x1c, 0x1c));
lv_style_set_bg_color(&btn_style, LV_STATE_DEFAULT, LV_COLOR_MAKE(0x38, 0x38, 0x38));
btn1 = lv_btn_create(lv_scr_act(), nullptr);
btn1->user_data = this;