Differences

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

--- uic [2025/02/08 01:04] – arisotura
+++ uic [2025/04/18 12:00] (current) – arisotura
@@ Line 11: / Line 11: @@
 | 1   | PA0  | SWIM pin |
 | 2   | PA1/NRST  | Reset |
-| 3   | PA2  | DPAD right |
+| 3   | PA2  | DPAD right (active low) |
-| 4   | PA3  | DPAD left |
+| 4   | PA3  | DPAD left (active low) |
-| 5   | PA4  | DPAD down |
+| 5   | PA4  | DPAD down (active low) |
 | 6   | PA5  | Left joystick Y |
 | 7   | PA6  | Left joystick X |
@@ Line 22: / Line 22: @@
 | 12  | VccA        | Analog supply voltage |
 | 13  | Vref+       | ADC positive reference |
-| 14  | PG0  | DPAD up |
+| 14  | PG0  | DPAD up (active low) |
 | 15  | PG1  | Expansion detect (through 1k resistor) |
 | 16  | PG2  | Headphone detect (active low) |
@@ Line 30: / Line 30: @@
 | 20  | PE1  | Blue LED? |
 | 21  | PE2  | Red LED |
-| 22  | PE3  | Button ZL |
+| 22  | PE3  | Button ZL (active low) |
-| 23  | PE4  | Button L |
+| 23  | PE4  | Button L (active low) |
 | 24  | PE5  | Sync button (active low) |
-| 25  | PD0  | Button ZR |
+| 25  | PD0  | Button ZR (active low) |
-| 26  | PD1  | Button R |
+| 26  | PD1  | Button R (active low) |
-| 27  | PD2  | Wifi board powered up (input, from wifi board pin 11) |
+| 27  | PD2  | Wifi board powered up (input, from wifi board pin 11) (or WoWL signal?) |
 | 28  | PD3  | Unused?? (output, not connected to anything) |
 | 29  | Vcc3  | Supply voltage |
@@ Line 51: / Line 51: @@
 | 41  | PF4  | UIC SPI - compass chipselect |
 | 42  | PF5  | UIC SPI - gyroscope chipselect |
-| 43  | PF6  | Button A |
+| 43  | PF6  | Button A (active low) |
-| 44  | PF7  | Button B |
+| 44  | PF7  | Button B (active low) |
-| 45  | PD4  | Button X |
+| 45  | PD4  | Button X (active low) |
-| 46  | PD5  | Button Y |
+| 46  | PD5  | Button Y (active low) |
 | 47  | PD6  | Right joystick X |
 | 48  | PD7  | Right joystick Y |
@@ Line 65: / Line 65: @@
 | 55  | Vcc2  | Supply voltage |
 | 56  | GND2  | Ground |
-| 57  | PC2  | Button + |
+| 57  | PC2  | Button + (active low) |
-| 58  | PC3  | Button - |
+| 58  | PC3  | Button - (active low) |
-| 59  | PC4  | HOME button |
+| 59  | PC4  | HOME button (active low) |
 | 60  | PC5  | TV button |
 | 61  | PC6  | Left joystick button |
-| 62  | PC7  | ?? output, to PMIC pin 13 |
+| 62  | PC7  | ?? shutdown output? output, to PMIC pin 13 |
 | 63  | PE6  | Blue LED (?) (to Q104) |
-| 64  | PE7  | Power button (active low) |
+| 64  | PE7  | Power button (active low) (actually PMIC pin 24) |
 Pins 1 and 2 are connected to test points TP233 and TP234 respectively. Pin 1 doesn't seem to be connected to anything else. Pin 2 is connected to a simple reset circuit.
@@ 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 |
 | 0x0B      | 0          | 4              | get UIC firmware version |
 | 0x0C      | 102        | 0              | ? |
-| 0x0D      | 1          | 0              | ? |
+| 0x0D      | 1          | 0              | set mic status bit0-1 |
-| 0x0E      | 1          | 0              | ? |
+| 0x0E      | 1          | 0              | set mic status bit2-3 |
 | 0x0F      | 0          | 2              | get previous and current UIC state |
 | 0x10      | 0          | 1              | get battery level |
 | 0x11      | 1          | 0              | ? |
 | 0x12      | 1          | 0              | toggle backlight |
-| 0x13      | 0          | 1              | ? |
+| 0x13      | 0          | 1              | get wifi board ready status |
-| 0x14      | 0          | 0              | ? |
+| 0x14      | 0          | 0              | ? delay shutdown by resetting shutdown timer?? |
-| 0x15      | 0          | 0              | reboot? go idle? |
+| 0x15      | 0          | 0              | reboot in state 11 |
-| 0x16      | 0          | 0              | ? set 'battery low' blinking light? |
+| 0x16      | 0          | 0              | shutdown (will reboot in state 11 if AC connected) |
 | 0x17      | 1          | 0              | ? |
 | 0x18      | 0          | 1              | ? |
@@ 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.