cyberslak
/lightsout
/amendments
/19
Work around HA brightness range quirks
Some lights in HA have a brightness range of 1-255, and some of 1-254 (notably Zigbee lights), without any way of distinguishing the two. To handle both, we internally use the 1-255 range (0 = off) and map 254 to 255 when requesting the entity state. This means we may show 99.6% brightness as 100%, but that is far better than showing it as 99% and being unable to set a light to 100%.
cyberslak made amendment 19 21 days ago
--- ha.c Sun Mar 9 23:03:13 2025
+++ ha.c Thu Mar 13 22:12:10 2025
@@ -49,6 +49,12 @@ short ha_get_entity_state(const char* id, struct entit
if (!cJSON_IsNull(brightness))
{
out->brightness = brightness->valueint;
+
+ // Zigbee brightness range is 0x01-0xfe.
+ // Just map 0xfe to 0xff, so at least the slider
+ // looks full at 100%.
+ if (out->brightness == 254)
+ out->brightness = 255;
} else {
out->brightness = 0;
}
--- main.c Thu Mar 13 01:51:04 2025
+++ main.c Thu Mar 13 22:02:11 2025
@@ -253,7 +253,7 @@ void bar_create(WindowPtr win, const char* id)
nil,
true,
ent->state.brightness, // current value
- 0, 254,
+ 0, 255,
kCustomSliderProc,
CONTROL_SLIDER
);
@@ -620,7 +620,7 @@ static void bar_draw(struct entity *ent)
FrameRect(&barBounds);
snprintf(buf, 128, "%d%%",
- (val * 100 + 127) / 254);
+ (val * 100 + 127) / 255);
pBuf = c2pstr(buf);
width = StringWidth(pBuf);