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/* AT91SAM7 "presence reader" firmware for OpenPCD
*
* (C) 2006 by Milosch Meriac <meriac@openpcd.de>
*
* 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 <errno.h>
#include <string.h>
#include <lib_AT91SAM7.h>
#include <librfid/rfid_layer2_iso14443a.h>
#include "rc632.h"
#include <os/dbgu.h>
#include <os/led.h>
#include <os/pcd_enumerate.h>
#include <os/usb_handler.h>
#include <pcd/rc632_highlevel.h>
#include <librfid/rfid_reader.h>
#include <librfid/rfid_layer2.h>
#include "../openpcd.h"
#include <os/main.h>
#define RAH NULL
u_int32_t delay_scan,delay_blink,last_uid,last_polled_uid;
static struct rfid_reader_handle *rh;
static struct rfid_layer2_handle *l2h;
static int usb_presence_rx(struct req_ctx *rctx)
{
struct openpcd_hdr *poh = (struct openpcd_hdr *) rctx->data;
switch (poh->cmd)
{
case OPENPCD_CMD_PRESENCE_UID_GET:
DEBUGPCRF("get presence UID");
poh->flags |= OPENPCD_FLAG_RESPOND;
if(last_polled_uid)
{
rctx->tot_len += 4;
poh->data[0]=(u_int8_t)(last_polled_uid>>24);
poh->data[1]=(u_int8_t)(last_polled_uid>>16);
poh->data[2]=(u_int8_t)(last_polled_uid>> 8);
poh->data[3]=(u_int8_t)(last_polled_uid );
last_polled_uid=0;
}
break;
default:
DEBUGP("UNKNOWN ");
return USB_ERR(USB_ERR_CMD_UNKNOWN);
break;
}
if (poh->flags & OPENPCD_FLAG_RESPOND)
return USB_RET_RESPOND;
return 0;
}
void _init_func(void)
{
DEBUGPCRF("enabling RC632");
rc632_init();
DEBUGPCRF("turning on RF");
rc632_turn_on_rf(RAH);
DEBUGPCRF("initializing 14443A operation");
rh = rfid_reader_open(NULL, RFID_READER_OPENPCD);
l2h = rfid_layer2_init(rh, RFID_LAYER2_ISO14443A);
DEBUGPCRF("registering USB handler");
usb_hdlr_register(&usb_presence_rx, OPENPCD_CMD_CLS_PRESENCE);
delay_scan=delay_blink=0;
last_uid=0;
}
int _main_dbgu(char key)
{
unsigned char value;
switch (key) {
case '4':
AT91F_DBGU_Printk("Testing RC632 : ");
if (rc632_test(RAH) == 0)
AT91F_DBGU_Printk("SUCCESS!\n\r");
else
AT91F_DBGU_Printk("ERROR!\n\r");
break;
case '5':
opcd_rc632_reg_read(RAH, RC632_REG_RX_WAIT, &value);
DEBUGPCR("Reading RC632 Reg RxWait: 0x%02xr", value);
break;
case '6':
DEBUGPCR("Writing RC632 Reg RxWait: 0x55");
opcd_rc632_reg_write(RAH, RC632_REG_RX_WAIT, 0x55);
break;
case '7':
rc632_dump();
break;
}
return -EINVAL;
}
void _main_func(void)
{
u_int32_t uid;
int status;
status = rfid_layer2_open(l2h);
if (status >= 0 && l2h->uid_len==4)
{
uid=((u_int32_t)l2h->uid[0]) |
((u_int32_t)l2h->uid[1])<< 8|
((u_int32_t)l2h->uid[2])<<16|
((u_int32_t)l2h->uid[3])<<24;
delay_scan=100;
if(uid!=last_uid)
{
last_uid=last_polled_uid=uid;
delay_blink=10;
DEBUGPCR("UID:0x%08X", uid);
}
}
else
if(delay_scan)
delay_scan--;
else
last_uid=0;
led_switch(1,(delay_blink==0)?1:0);
if(delay_blink)
delay_blink--;
/* first we try to get rid of pending to-be-sent stuff */
usb_out_process();
/* next we deal with incoming requests from USB EP1 (OUT) */
usb_in_process();
rc632_unthrottle();
}
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