first try for ps2, time to debug

device/ps2controller.cc

@@ -89,8 +89,11 @@ enum ControllerCommand {
  *
  *  \param value data to be sent
  */
-[[maybe_unused]] static void sendData(uint8_t value) {
-  // TODO: You have to implement this method
+ static void sendData(uint8_t value) {
+  
+  if (!(ctrl_port.inb()&HAS_OUTPUT)) {
+    data_port.outb(value);
+  }
   (void)value;
 }
 
@@ -106,8 +109,20 @@ void init() {
 
 bool fetch(Key &pressed) {
   // TODO: You have to implement this method
-  (void)pressed;
-  return false;
+  uint8_t status_reg = ctrl_port.inb();
+  if(status_reg & IS_MOUSE || !(status_reg & HAS_OUTPUT) )
+    return false; // TODO Remove mouse events from buffer 
+  
+  uint8_t out_buffer = data_port.inb();
+  
+  pressed = key_decoder.decode(out_buffer);
+  
+
+  if (pressed.alt() || pressed.ctrl() || pressed.shift) {
+    return false;
+  }
+  else
+    return true;
 }
 
 void setRepeatRate(Speed speed, Delay delay) {