Differences

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

--- lcd_controller [2025/05/14 21:22] – arisotura
+++ lcd_controller [2025/05/17 00:05] (current) – arisotura
@@ Line 1: / Line 1: @@
 ====== LCD controller ======
-The gamepad provides simple framebuffer-based display hardware.
+The gamepad provides simple display hardware that can display a video feed (from the camera or the H264 decoder) and a framebuffer overlay on top.
 Register map:
@@ Line 13: / Line 13: @@
 | 0xF0009418 | Horizontal end of display |
 | 0xF000941C | Vertical end of display |
-| 0xF0009420 | ?? video-out X offset? |
+| 0xF0009420 | Video feed X offset |
-| 0xF0009424 | ?? video-out width? |
+| 0xF0009424 | Video feed width |
-| 0xF0009428 | ?? video-out Y offset? |
+| 0xF0009428 | Video feed Y offset |
-| 0xF000942C | ?? video-out height? |
+| 0xF000942C | Video feed height |
 | 0xF0009430 | ?? |
 | 0xF0009434 | ?? |
@@ Line 155: / Line 155: @@
 ^ Bits ^ Desc. ^
 | 0    | ?? breaks display |
-| 1    | Must be set for display to work. Presumably enables overlay. |
+| 1    | Enable display (0=black screen) |
-| 2    | ?? causes weird effects |
+| 2    | Enable video feed (camera/H264?) |
-| 3    | ?? |
+| 3    | Video feed input? (0=post-processed camera?, 1=raw camera?) |
-| 4    | Must be set for display to work. Presumably general display enable. |
+| 4    | Enable overlay |
+| 5    | ?? |
+| 6    | ?? |
 **0xF00094B0**