Create mouse.c

kernel/inc/mouse.c

@@ -0,0 +1,116 @@
+#include "mouse.h"
+
+uint8 mouse_cycle=0;     //unsigned char
+int8 mouse_byte[3];    //signed char
+int8 mouse_x=0;         //signed char
+int8 mouse_y=0;         //signed char
+
+//Mouse functions
+void mouse_handler(registers_t regs) //struct regs *a_r (not used but just there)
+{
+  static uint8 cycle = 0;
+  static int8 mouse_bytes[3];
+  mouse_bytes[cycle++] = inportb(0x60);
+
+  if (cycle == 3) { // if we have all the 3 bytes...
+    cycle = 0; // reset the counter
+
+
+    if ((mouse_bytes[0] & 0x80) || (mouse_bytes[0] & 0x40))
+ print("\nButton is pressed",2);
+      return; // the mouse only sends information about overflowing, do not care about it and return
+    if (!(mouse_bytes[0] & 0x20))
+ print("\nButton is pressed",2);
+    //  y |= 0xFFFFFF00; delta-y is a negative value
+    if (!(mouse_bytes[0] & 0x10))
+ print("\nButton is pressed",2);
+   //   x |= 0xFFFFFF00; //delta-x is a negative value
+    if (mouse_bytes[0] & 0x4)
+
+      print("\nMiddle button is pressed",2);
+    if (mouse_bytes[0] & 0x2)
+      print("\nRight button is pressed!n",2);
+    if (mouse_bytes[0] & 0x1)
+      print("\nLeft button is pressed!n",2);
+    // do what you want here, just replace the puts's to execute an action for each button
+    // to use the coordinate data, use mouse_bytes[1] for delta-x, and mouse_bytes[2] for delta-y
+  }
+}
+
+void mouse_wait(uint8 a_type) //unsigned char
+{
+  uint32 _time_out=100000; //unsigned int
+  if(a_type==0)
+  {
+    while(_time_out--) //Data
+    {
+      if((inportb(0x64) & 1)==1)
+      {
+        return;
+      }
+    }
+    return;
+  }
+  else
+  {
+    while(_time_out--) //Signal
+    {
+      if((inportb(0x64) & 2)==0)
+      {
+        return;
+      }
+    }
+    return;
+  }
+}
+
+void mouse_write(uint8 a_write) //unsigned char
+{
+  //Wait to be able to send a command
+  mouse_wait(1);
+  //Tell the mouse we are sending a command
+  outportb(0x64, 0xD4);
+  //Wait for the final part
+  mouse_wait(1);
+  //Finally write
+  outportb(0x60, a_write);
+}
+
+uint8 mouse_read()
+{
+  //Get's response from mouse
+  mouse_wait(0); 
+  return inportb(0x60);
+}
+
+void mouse_install()
+{
+  uint8 _status;  //unsigned char
+
+  //Enable the auxiliary mouse device
+  mouse_wait(1);
+  outportb(0x64, 0xA8);
+
+  //Enable the interrupts
+  mouse_wait(1);
+  outportb(0x64, 0x20);
+  mouse_wait(0);
+  _status=(inportb(0x60) | 2);
+  mouse_wait(1);
+  outportb(0x64, 0x60);
+  mouse_wait(1);
+  outportb(0x60, _status);
+
+  //Tell the mouse to use default settings
+  mouse_write(0xF6);
+  mouse_read();  //Acknowledge
+
+  //Enable the mouse
+  mouse_write(0xF4);
+  mouse_read(); 
+
+ //Acknowledge
+
+  //Setup the mouse handler
+  register_interrupt_handler(IRQ12, mouse_handler);
+}