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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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4
src/displayapp/screens/Tile.cpp
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@@ -87,9 +87,9 @@ Tile::Tile(uint8_t screenID,
lv_obj_align(btnm1, NULL, LV_ALIGN_CENTER, 0, 10);
lv_obj_set_style_local_radius(btnm1, LV_BTNMATRIX_PART_BTN, LV_STATE_DEFAULT, 20);
lv_obj_set_style_local_bg_opa(btnm1, LV_BTNMATRIX_PART_BTN, LV_STATE_DEFAULT, LV_OPA_40);
lv_obj_set_style_local_bg_opa(btnm1, LV_BTNMATRIX_PART_BTN, LV_STATE_DEFAULT, LV_OPA_50);
lv_obj_set_style_local_bg_color(btnm1, LV_BTNMATRIX_PART_BTN, LV_STATE_DEFAULT, LV_COLOR_AQUA);
lv_obj_set_style_local_bg_opa(btnm1, LV_BTNMATRIX_PART_BTN, LV_STATE_DISABLED, LV_OPA_40);
lv_obj_set_style_local_bg_opa(btnm1, LV_BTNMATRIX_PART_BTN, LV_STATE_DISABLED, LV_OPA_50);
lv_obj_set_style_local_bg_color(btnm1, LV_BTNMATRIX_PART_BTN, LV_STATE_DISABLED, lv_color_hex(0x111111));
lv_obj_set_style_local_pad_all(btnm1, LV_BTNMATRIX_PART_BG, LV_STATE_DEFAULT, 0);
lv_obj_set_style_local_pad_inner(btnm1, LV_BTNMATRIX_PART_BG, LV_STATE_DEFAULT, 10);