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Add display color inversion flag and logic for Feather TFT

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This commit is contained in:
Adolfo Reyna
2026-01-30 23:02:53 -05:00
parent 45cbcc8384
commit d2fd001e70
4 changed files with 28 additions and 14 deletions
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17
display/low_level_display_st7796.h
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@@ -11,29 +11,34 @@ private:
int height;
bool initialized;
uint16_t* rgb_buffer; // Persistent buffer for 1-bit to RGB565 conversion
bool invert_color; // If true, swap black/white
public:
LowLevelDisplayST7796(const st7796_config* cfg, int w, int h);
LowLevelDisplayST7796(const st7796_config* cfg, int w, int h, bool invert = false);
~LowLevelDisplayST7796() override;
// Core display operations - converts 1-bit to RGB565 internally
bool init() override;
void clear(bool white = true) override;
void draw_pixel(int x, int y, bool white) override;
void draw_buffer(const uint8_t* bit_buffer) override;
void refresh() override;
// Display properties
int get_width() const override { return width; }
int get_height() const override { return height; }
DisplayType get_type() const override { return DISPLAY_TYPE_ST7796; }
bool is_color() const override { return true; }
// Backlight control
void set_backlight(bool on) override;
// Orientation control
void set_rotation(uint8_t rotation) override;
// Color inversion control
void set_invert_color(bool inv) { invert_color = inv; }
bool get_invert_color() const { return invert_color; }
};
#endif // LOW_LEVEL_DISPLAY_ST7796_H