Differences

This shows you the differences between two versions of the page.

--- uic [2025/02/23 02:08] – arisotura
+++ uic [2025/04/18 12:00] (current) – arisotura
@@ Line 188: / Line 188: @@
 | 0x06      | 0          | 0              | EEPROM write enable |
 | 0x07      | 0          | 128            | query input data |
-| 0x08      | 2          | 0              | ? |
+| 0x08      | 2          | 0              | set status LED brightness |
 | 0x09      | 1          | 0              | begin firmware update |
 | 0x0A      | 0          | 6              | set various battery thresholds |
@@ Line 279: / Line 279: @@
 Query input data.
+Important note: polling input too often may cause the UIC to return bogus data. For reference, the stock firmware polls every ~5.5 milliseconds.
 Response:
@@ Line 352: / Line 354: @@
 The input data is little-endian.
+==== Command 08 ====
+Set status LED brightness for the given LED.
+First parameter byte is the number of the LED to set: 0 is the HOME button LED, 1 is the blue battery LED, 2 is the red battery LED, and 3 is the amber battery LED. Any value higher than 3 is interpreted as 3.
+Second parameter byte is the brightness, ranging from 0 (off) to 255 (full brightness).
+Note that only one battery LED can be active at a time. Setting any of the blue/red/amber LEDs turns off the other battery LEDs.
+This command will be ignored if the UIC is overriding the battery LED (for example, during the blue LED fade-out at boot).
@@ Line 380: / Line 395: @@
 Get battery level. The returned battery level is expressed in steps, based on the thresholds set by command 0x0A.
+Returns 0 when the AC adapter is connected.
 Response: one byte, the battery level step.