Merge pull request 'Merge feature/graphics-interrupts into develop' (#14) from feature/graphics-interrupts into develop

Reviewed-on: #14

src/driver/timers/graphicsrefresh.pas

@@ -0,0 +1,52 @@
+{
+    Driver->Timer->GraphicsRefresh - Timer-driven graphics refresh at ~120FPS.
+
+    Hooks into the 1024Hz timer (TMR_0_ISR) and calls the desktop, uidebug,
+    LVGL and video flush routines every ~9 ticks (1024/9 ≈ 113.8 FPS).
+
+    @author(Kieron Morris <[email protected]>)
+}
+unit graphicsrefresh;
+
+interface
+
+procedure init;
+
+implementation
+
+uses
+    util,
+    TMR_0_ISR,
+    desktop,
+    uidebug,
+    lvgl,
+    video,
+    syslog;
+
+const
+    { 1024 / 4 ≈ 256 FPS }
+    TICKS_PER_FRAME = 4;
+
+var
+    TickCounter : uint32;
+
+procedure on_tick(data : void);
+begin
+    TickCounter := TickCounter + 1;
+    if TickCounter >= TICKS_PER_FRAME then begin
+        TickCounter := 0;
+        desktop.update;
+        uidebug.update;
+        lvgl_handler;
+        video.Flush;
+    end;
+end;
+
+procedure init;
+begin
+    TickCounter := 0;
+    TMR_0_ISR.hook(uint32(@on_tick));
+    syslog.logln('GFXREFRESH', 'Hooked into 1024Hz timer (~120 FPS).');
+end;
+
+end.

src/driver/timers/usbhotplug.pas

@@ -0,0 +1,46 @@
+{
+    Driver->Timer->USBHotplug - Timer-driven USB hotplug polling at ~1Hz.
+
+    Hooks into the 1024Hz timer (TMR_0_ISR) and calls
+    usbcore.usb_check_hotplug every 1024 ticks (approximately once per second).
+
+    @author(Kieron Morris <[email protected]>)
+}
+unit usbhotplug;
+
+interface
+
+procedure init;
+
+implementation
+
+uses
+    util,
+    TMR_0_ISR,
+    usbcore,
+    syslog;
+
+const
+    { 1024 ticks at 1024Hz ≈ 1 second }
+    TICKS_PER_POLL = 1024;
+
+var
+    TickCounter : uint32;
+
+procedure on_tick(data : void);
+begin
+    TickCounter := TickCounter + 1;
+    if TickCounter >= TICKS_PER_POLL then begin
+        TickCounter := 0;
+        usbcore.usb_check_hotplug;
+    end;
+end;
+
+procedure init;
+begin
+    TickCounter := 0;
+    TMR_0_ISR.hook(uint32(@on_tick));
+    syslog.logln('USBHOTPLUG', 'Hooked into 1024Hz timer (~1Hz polling).');
+end;
+
+end.

src/kernel.pas

@@ -66,7 +66,8 @@ uses
      rand,
      hashmap, vfs,
      video, vesa, doublebuffer, color, lvgl, desktop, uidebug,
-     vterminal;
+     vterminal,
+     graphicsrefresh, usbhotplug;
  
 procedure kmain(mbinfo: Pmultiboot_info_t; mbmagic: uint32); stdcall;
  
@@ -103,18 +104,14 @@ begin
     pop_trace;
 end;
 
-procedure myUserLandFunction;
-var
-    i : uint32;
-
+procedure yield();
 begin
-    i:=0;
-    while true do begin 
-        i:=i+1;
-        asm
-            MOV EAX, i
-        end;
-    end;
+    asm
+         sti
+     @idle:
+         hlt
+         jmp @idle
+     end;
 end;
 
 procedure kmain(mbinfo: Pmultiboot_info_t; mbmagic: uint32); stdcall; [public, alias: 'kmain'];   
@@ -132,6 +129,7 @@ begin
 
      { Syslog Init — right after serial so log hooks work }
      syslog.init();
+     syslog.writestringln('Booting Asuro...');
 
      { Store Multiboot info }
      multibootinfo:= mbinfo;
@@ -140,10 +138,8 @@ begin
      { Ensure tracer is frozen }
      tracer.freeze();
 
-     syslog.writestringln('Booting Asuro...');
-
-     syslog.writestringln('Checking for Multiboot Compliance');
      { Check for Multiboot }
+     syslog.writestringln('Checking for Multiboot Compliance');
      if (multibootmagic <> MULTIBOOT_BOOTLOADER_MAGIC) then begin
         syslog.logln('KERNEL', 'Multiboot Compliant Boot-Loader Needed!');
         syslog.logln('KERNEL', 'HALTING.');
@@ -276,16 +272,13 @@ begin
      usb_keyboard.UnitTest;
      usb_mouse.UnitTest;
 
-     { Main render loop — USB completions are now interrupt-driven }
-     syslog.logln('KERNEL', 'Entering main render loop.');
-     while true do begin
-        desktop.update;
-        uidebug.update;
-        lvgl_handler;
-        usbcore.usb_check_hotplug;
-        video.Flush();
-     end;
+     { Register timer-driven tasks }
+     graphicsrefresh.init;
+     usbhotplug.init;
 
+     { All work is now driven by timer interrupts — idle the CPU }
+     syslog.logln('KERNEL', 'All tasks registered. Halting into idle.');
+     kernel.yield();
 end;
  
 end.