Add backlight control to the IS31FL3731 driver
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effffa33a5
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2a7f9a7e46
1 changed files with 10 additions and 4 deletions
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@ -43,7 +43,7 @@ extern const uint8_t CIE1931_CURVE[];
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#define GDISP_INITIAL_CONTRAST 0
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#endif
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#ifndef GDISP_INITIAL_BACKLIGHT
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#define GDISP_INITIAL_BACKLIGHT 100
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#define GDISP_INITIAL_BACKLIGHT 0
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#endif
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#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER<<0)
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@ -204,7 +204,8 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
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uint8_t* src = PRIV(g)->frame_buffer;
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for (int y=0;y<GDISP_SCREEN_HEIGHT;y++) {
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for (int x=0;x<GDISP_SCREEN_WIDTH;x++) {
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PRIV(g)->write_buffer[get_led_address(g, x, y)]=CIE1931_CURVE[*src];
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uint8_t val = (uint16_t)*src * g->g.Backlight / 100;
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PRIV(g)->write_buffer[get_led_address(g, x, y)]=CIE1931_CURVE[val];
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++src;
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}
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}
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@ -297,8 +298,13 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
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g->g.Orientation = (orientation_t)g->p.ptr;
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return;
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case GDISP_CONTROL_CONTRAST:
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return;
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case GDISP_CONTROL_BACKLIGHT:
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if (g->g.Backlight == (unsigned)g->p.ptr)
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return;
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unsigned val = (unsigned)g->p.ptr;
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g->g.Backlight = val > 255 ? 255 : val;
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g->flags |= GDISP_FLG_NEEDFLUSH;
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return;
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}
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}
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#endif // GDISP_NEED_CONTROL
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