101 lines
3.1 KiB
C
101 lines
3.1 KiB
C
/***************************************************************
|
|
*
|
|
* OpenPICC - ISO 14443 Layer 2 Type A Sniffer
|
|
* Also serves as PoC code for iso14443_layer2a usage
|
|
*
|
|
* Copyright 2008 Henryk Plötz <henryk@ploetzli.ch>
|
|
*
|
|
***************************************************************
|
|
|
|
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; version 2.
|
|
|
|
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.,
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
|
*/
|
|
|
|
#include <FreeRTOS.h>
|
|
#include <board.h>
|
|
#include <task.h>
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "openpicc.h"
|
|
#include "ssc_buffer.h"
|
|
#include "iso14443.h"
|
|
#include "iso14443_sniffer.h"
|
|
#include "iso14443_layer2a.h"
|
|
#include "iso14443a_miller.h"
|
|
#include "usb_print.h"
|
|
#include "cmd.h"
|
|
#include "led.h"
|
|
|
|
static iso14443_frame *rx_frame;
|
|
|
|
void iso14443_sniffer (void *pvParameters)
|
|
{
|
|
(void)pvParameters;
|
|
int res;
|
|
|
|
/* Delay until USB print etc. are ready */
|
|
vTaskDelay(1000 * portTICK_RATE_MS);
|
|
|
|
do {
|
|
res = iso14443_layer2a_init(0);
|
|
if(res < 0) {
|
|
usb_print_string("Sniffer: Initialization failed\n\r");
|
|
vTaskDelay(10000 * portTICK_RATE_MS);
|
|
}
|
|
} while(res < 0);
|
|
|
|
|
|
//while(1) { static int i=0; vTaskDelay(10*portTICK_RATE_MS); vLedSetBrightness(LED_RED, abs(1000-i)); i=(i+8)%2000; }
|
|
|
|
usb_print_string("Waiting for carrier. ");
|
|
while(iso14443_wait_for_carrier(1000 * portTICK_RATE_MS) != 0) {
|
|
}
|
|
usb_print_string("Carrier detected.\n\r");
|
|
|
|
while(true) {
|
|
res = iso14443_receive(NULL, &rx_frame, 20000 * portTICK_RATE_MS);
|
|
if(res >= 0) {
|
|
//DumpStringToUSB("\n\r");
|
|
DumpTimeToUSB(xTaskGetTickCount());
|
|
usb_print_string(": Frame received, consists of ");
|
|
|
|
DumpUIntToUSB(rx_frame->numbytes);
|
|
usb_print_string(" bytes and ");
|
|
DumpUIntToUSB(rx_frame->numbits);
|
|
usb_print_string(" bits: ");
|
|
DumpBufferToUSB((char*)rx_frame->data, rx_frame->numbytes + (rx_frame->numbits+7)/8 );
|
|
usb_print_string("\n\r");
|
|
|
|
portENTER_CRITICAL();
|
|
rx_frame->state = FRAME_FREE;
|
|
portEXIT_CRITICAL();
|
|
} else {
|
|
if(res != -ETIMEDOUT) {
|
|
usb_print_string("Receive error: ");
|
|
switch(res) {
|
|
case -ENETDOWN: usb_print_string("PLL is not locked or PLL lock lost\n\r"); break;
|
|
case -EBUSY: usb_print_string("A Tx is currently running or pending, can't receive\n\r"); break;
|
|
case -EALREADY: usb_print_string("There's already an iso14443_receive() invocation running\n\r"); break;
|
|
}
|
|
vTaskDelay(1000 * portTICK_RATE_MS); // FIXME Proper error handling, e.g. wait for Tx end in case of EBUSY
|
|
} else if(0) {
|
|
DumpStringToUSB("\n\r");
|
|
DumpTimeToUSB(xTaskGetTickCount());
|
|
usb_print_string(": -- Mark --");
|
|
}
|
|
}
|
|
}
|
|
}
|