From d9e17b5233129adb91c81fc3cc7327e44fe4646f Mon Sep 17 00:00:00 2001
From: Florian Jung <flo@windfisch.org>
Date: Sat, 5 Apr 2014 19:53:55 +0200
Subject: code cleanup

---
 main.c | 84 ++++++++++++++++++++++++++----------------------------------------
 1 file changed, 33 insertions(+), 51 deletions(-)

diff --git a/main.c b/main.c
index 8cb3146..ef9c55c 100644
--- a/main.c
+++ b/main.c
@@ -114,7 +114,6 @@ USB_PUBLIC uchar usbFunctionSetup(uchar data[8])
     if ((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS  &&
         (rq->bRequest == USBRQ_HID_GET_REPORT))
     {  
-    	debug(32);
             // wValue: ReportType (highbyte), ReportID (lowbyte)
             usbMsgPtr = (void *)&reportBuffer; // we only have this one
             return sizeof(reportBuffer);
@@ -300,8 +299,7 @@ char decode_byte(char* bufptr)
 
 int main (void)
 {
-	char rand=123;
-	unsigned char ltrig=0, rtrig=0;
+	unsigned char ltrig=0, rtrig=0; // only used for rumbling test.
 
 	DDRC=0x00;
 	PORTC=0x00;
@@ -325,74 +323,61 @@ int main (void)
 
 	sei();
 debug(4);
-	int temp=5;
 	int n_received;
 	
 	int toggle=0;
-	int count=0;
 	int count2=0;
 	int count3=0;
 	while(1)
 	{
-		toggle=~toggle;
+		wdt_reset();
+
+
+
+		// DEBUGGING CODE starts here
+
+		toggle=~toggle; // debug mainloop duration
 		debug(toggle);
 
-		count++;
-		if (count>=1500) count=0;
-		count2++;
-		if (count2>=512-ltrig) count2=0;
+		count2++;       // debug rumble
+		if (count2>=256+ltrig) count2=0;
 		count3++;
 		if (count3>=25) count3=0;
 
-		wdt_reset();
+		// DEBUGGING CODE ends here.
+
+
+
+		// USB CODE starts here
+
 		usbPoll();
 		
 		if(usbInterruptIsReady())
-		{
-
 		    usbSetInterrupt((void *)&reportBuffer, sizeof(reportBuffer));
 
-//		    debug(2);
-		}
+		// USB CODE ends here
 
 
 
-/*		temp++;
-		if (!(PIND & 0x08)) // check if uC is hung up
-		{
-			//PORTB=~(1 << ((temp>>9)%6));
-			PORTB=~temp;
-		}
-		else if (!(PIND & 0x20)) // debug num_received
-		{
-			PORTB=~n_received>>3;
-		}
-		else if (!(PIND & 0x40)) // clear debug output
-		{
-			PORTB=~0x00;
-		}
-		else*/
-		{
-			// decode "buffer" and write button states to PORTB
+		_delay_us(10);
 
-			//PORTB=~buffer[4];
-		}
 
 
-		//debug(temp % 64);
-//		_delay_ms(0.3);
-		_delay_us(10);
-		char foo[] = { 0x40, 0x03, 0x00 };
-		//char foo[] = { 0x40, 0x03, 0x02 };
+		// GAMECUBE COMMUNICATION starts here
+
+		char getid_msg=0x00;
+		send_recv_gc(&getid_msg, 1);  // send get-id message; probably unneccessary.
 
-		if (count2<256 && count3<rtrig/10)
-			foo[2]|=0x01;
+
+
+		char getstatus_msg[] = { 0x40, 0x03, 0x00 };
+
+		if (count2<256 && count3<rtrig/10) // set rumbling bit, if appropriate
+			getstatus_msg[2]|=0x01;
 		
-		char foo2=0x00;
-		send_recv_gc(&foo2, 1);
-		n_received=send_recv_gc(foo, 3);
-		if (n_received == 64)
-		{
+		n_received=send_recv_gc(getstatus_msg, 3); // send get-status message.
+		if (n_received == 64) // sanity check to detect corrupted communication.
+		{                     // this happens once in a while because USB interrupt kicks in.
 			
 			reportBuffer.x=decode_byte(buffer+16);
 			reportBuffer.y=~decode_byte(buffer+24);
@@ -411,12 +396,9 @@ debug(4);
 
 			ltrig=decode_byte(buffer+48);
 			rtrig=decode_byte(buffer+56);
-			
-		}
-		else
-		{
-			temp++;
 		}
+
+		// GAMECUBE COMMUNICATION ends here.
 	}
 
 	return 0; // never reached
-- 
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