From c3b38e3665207d029f617fc67bc9d19142ce5cd7 Mon Sep 17 00:00:00 2001
From: Michal Idziorek <m.i@gmx.at>
Date: Tue, 9 Sep 2014 11:46:49 +0200
Subject: mouse support

---
 kernel/mouse.c | 48 ++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 40 insertions(+), 8 deletions(-)

(limited to 'kernel/mouse.c')

diff --git a/kernel/mouse.c b/kernel/mouse.c
index bee595c..d000b30 100644
--- a/kernel/mouse.c
+++ b/kernel/mouse.c
@@ -11,9 +11,9 @@
 
 
 static volatile uint8_t mouse_cycle;
-static volatile int8_t mouse_byte[3];
-static volatile uint8_t mouse_x;
-static volatile uint8_t mouse_y;
+static volatile uint8_t mouse_byte[3];
+volatile int16_t mouse_x;
+volatile int16_t mouse_y;
 static volatile uint8_t mouse_a;
 
 
@@ -30,7 +30,8 @@ int8_t mouse_get_y()
 
 void mouse_init()
 {
-    mouse_cycle=mouse_x=mouse_y=0;
+   mouse_x=mouse_y=0;
+   mouse_cycle=1;
 
   uint8_t _status;  //unsigned char
 
@@ -62,7 +63,41 @@ void mouse_init()
 
 void mouse_log()
 {
-    log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"%d delta x: %d delta y: %d ",mouse_a, mouse_x,mouse_y);
+    //log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"%02x / %02x / %02x ",mouse_byte[0], mouse_byte[1],mouse_byte[2]);
+    
+    if(mouse_byte[0]&0x80||mouse_byte[0]&0x40)return; //skip packet on overflow
+    if(!(mouse_byte[0]&0x8))panic(FOOLOS_MODULE_NAME,"mouse packets out of sync!?"); // this bit is always 1, otherwise panic!
+
+    //
+    if(mouse_byte[1]>127){
+	mouse_x-=256;
+	mouse_x+=mouse_byte[1];
+    }
+    else
+    {
+	mouse_x+=mouse_byte[1];
+    }
+    if(mouse_byte[2]>127){
+	mouse_y-=256;
+	mouse_y+=mouse_byte[2];
+    }
+    else
+    {
+        mouse_y+=mouse_byte[2];
+    }
+
+
+
+    
+    if(mouse_x<0)mouse_x=0;
+    if(mouse_y<0)mouse_y=0;
+    if(mouse_x>800)mouse_x=800;
+    if(mouse_y>600)mouse_y=600;
+    
+
+    //log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"%d / %d / %02x ",mouse_x, mouse_y,mouse_byte[2]);
+    PutFont('X', mouse_x,600-mouse_y, 0xffffff);
+
 }
 //Mouse functions
 void mouse_handler()//struct regs *a_r) //struct regs *a_r (not used but just there)
@@ -81,9 +116,6 @@ void mouse_handler()//struct regs *a_r) //struct regs *a_r (not used but just th
       break;
     case 2:
       mouse_byte[2]=x86_inb(0x60);
-      mouse_a=mouse_byte[0];
-      mouse_x=mouse_byte[1];
-      mouse_y=mouse_byte[2];
       mouse_cycle=0;
       mouse_log();
       break;
-- 
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