From 324c5ba9098c1010d0aa8c1e26b95509878ce9f2 Mon Sep 17 00:00:00 2001
From: Yves Fischer <yvesf-git@xapek.org>
Date: Tue, 11 Oct 2011 21:50:49 +0200
Subject: Mini-Octopus build from r@171

---
 firmware/usbn2mc.c | 153 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 153 insertions(+)
 create mode 100644 firmware/usbn2mc.c

(limited to 'firmware/usbn2mc.c')

diff --git a/firmware/usbn2mc.c b/firmware/usbn2mc.c
new file mode 100644
index 0000000..d9b0fdd
--- /dev/null
+++ b/firmware/usbn2mc.c
@@ -0,0 +1,153 @@
+/* usbn960x.c
+* Copyright (C) 2005  Benedikt Sauter
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation; either version 2 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include "usbn2mc.h"
+#include "uart.h"
+
+//*******************************************************************
+// add own vendor requests          
+// ********************************************************************
+
+// decode your own vendor requests
+
+void
+USBNDecodeVendorRequest (DeviceRequest * req)
+{
+#if 0
+  //SendHex(req->bRequest);       // decode request code
+  SendHex (req->wLength);	// decode request code
+  USBNWrite (RXC0, RX_EN);
+  USBNRead (RXD0);
+  USBNRead (RXD0);
+
+  //USBNWrite(TXC0,FLUSH);
+  //USBNWrite(TXD0,0x24);
+  //USBNWrite(TXD0,0x25);
+#endif
+}
+
+
+void
+USBNDecodeClassRequest (DeviceRequest * req)
+{
+#if 0
+  //SendHex(req->bRequest);       // decode request code
+  SendHex (req->wLength);	// decode request code
+  USBNWrite (RXC0, RX_EN);
+  USBNRead (RXD0);
+  USBNRead (RXD0);
+#endif
+}
+
+
+
+// ********************************************************************
+// This subroutine handles the communication with usbn9604          
+// ********************************************************************
+
+
+// Read data from usbn96x register
+
+void
+USBNInitMC (void)
+{
+  // interrupt on INT4 pin falling edge (atmega128)
+  //EICRB = (0 << ISC41) | (1 << ISC40);
+  EICRB = (1 << ISC40);
+  // interrupts on!
+  //EIMSK = (1 << INT4);		// allow extern irq4
+  EIMSK = (1 << INT4);
+
+  USB_CTRL_DDR |= (1 << PF_A0) | (1 << PF_RD) | (1 << PF_WR);	// output (a0,rd,wr)
+  //USB_CTRL_PORT |= ((1 << PF_RD) | (1 << PF_WR) & ~(PF_A0));
+  USB_CTRL_PORT |= ((1 << PF_RD) | (1 << PF_WR));
+  USB_CS_DDR |= (1 << PF_CS);
+  USB_CS_PORT |= (1 << PF_CS);
+
+  sei ();
+}
+
+
+unsigned char
+USBNRead (unsigned char Adr)
+{
+  USB_DATA_DDR = 0xff;		// set for output
+  USB_DATA_OUT = Adr;		// load address
+
+  USB_CS_PORT ^= (1 << PF_CS);
+  USB_CTRL_PORT ^= (1 << PF_WR) | (1 << PF_A0);	// strobe the CS, WR, and A0 pins
+  USB_CS_PORT ^= (1 << PF_CS);
+  USB_CTRL_PORT ^= (1 << PF_WR) | (1 << PF_A0);	// strobe the CS, WR, and A0 pins
+//      USB_CS_PORT ^=(1<<PF_CS);       
+//      USB_CTRL_PORT ^= (1<<PF_WR) |(1<<PF_A0);
+  asm ("nop");			// pause for data to get to bus
+  USB_DATA_DDR = 0x00;		// set PortD for input
+  return (USBNBurstRead ());	// get data off the bus
+}
+
+
+unsigned char
+USBNBurstRead (void)
+{
+  unsigned char result;
+
+  USB_CS_PORT ^= (1 << PF_CS);
+  USB_CTRL_PORT ^= (1 << PF_RD);
+
+  asm ("nop");			// pause for data to get to bus
+  asm ("nop");
+  result = USB_DATA_IN;
+  USB_CS_PORT ^= (1 << PF_CS);
+  USB_CTRL_PORT ^= (1 << PF_RD);
+  return result;
+}
+
+
+// Write data to usbn96x register
+void
+USBNWrite (unsigned char Adr, unsigned char Data)
+{
+  USB_DATA_OUT = Adr;		// put the address on the bus
+  USB_DATA_DDR = 0xff;		// set for output
+  USB_CS_PORT ^= (1 << PF_CS);
+  USB_CTRL_PORT ^= (1 << PF_WR) | (1 << PF_A0);
+  USB_CS_PORT ^= (1 << PF_CS);
+  USB_CTRL_PORT ^= (1 << PF_WR) | (1 << PF_A0);
+  USBNBurstWrite (Data);
+}
+
+
+void
+USBNBurstWrite (unsigned char Data)
+{
+  USB_DATA_OUT = Data;		// put data on the bus
+  USB_CS_PORT ^= (1 << PF_CS);
+  USB_CTRL_PORT ^= (1 << PF_WR);
+  USB_CS_PORT ^= (1 << PF_CS);
+  USB_CTRL_PORT ^= (1 << PF_WR);
+}
+
+
+
+void
+USBNDebug (char *msg)
+{
+//  UARTWrite (msg);
+}
-- 
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