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6be69f0d
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henryk
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/***************************************************************
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*
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* OpenPICC - ISO 14443 Layer 2 Type A Sniffer
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* Also serves as PoC code for iso14443_layer2a usage
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*
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* Copyright 2008 Henryk Plötz <henryk@ploetzli.ch>
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*
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***************************************************************
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <FreeRTOS.h>
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#include <board.h>
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#include <task.h>
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#include <errno.h>
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e2e37bea
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henryk
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#include <stdlib.h>
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6be69f0d
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henryk
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#include "openpicc.h"
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ad5b96d5
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henryk
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#include "ssc_buffer.h"
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#include "iso14443.h"
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6be69f0d
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henryk
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#include "iso14443_sniffer.h"
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#include "iso14443_layer2a.h"
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#include "iso14443a_miller.h"
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#include "usb_print.h"
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#include "cmd.h"
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ad5b96d5
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henryk
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#include "led.h"
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6be69f0d
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henryk
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e2e37bea
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henryk
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static iso14443_frame *rx_frame;
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6be69f0d
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henryk
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void iso14443_sniffer (void *pvParameters)
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{
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(void)pvParameters;
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int res;
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/* Delay until USB print etc. are ready */
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vTaskDelay(1000 * portTICK_RATE_MS);
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do {
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res = iso14443_layer2a_init(0);
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if(res < 0) {
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usb_print_string("Sniffer: Initialization failed\n\r");
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vTaskDelay(10000 * portTICK_RATE_MS);
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}
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} while(res < 0);
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e2e37bea
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henryk
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//while(1) { static int i=0; vTaskDelay(10*portTICK_RATE_MS); vLedSetBrightness(LED_RED, abs(1000-i)); i=(i+8)%2000; }
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6be69f0d
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henryk
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usb_print_string("Waiting for carrier. ");
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while(iso14443_wait_for_carrier(1000 * portTICK_RATE_MS) != 0) {
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}
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usb_print_string("Carrier detected.\n\r");
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while(true) {
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e2e37bea
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henryk
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res = iso14443_receive(NULL, &rx_frame, 20000 * portTICK_RATE_MS);
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6be69f0d
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henryk
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if(res >= 0) {
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b7a11d3b
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henryk
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//DumpStringToUSB("\n\r");
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6be69f0d
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henryk
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DumpTimeToUSB(xTaskGetTickCount());
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usb_print_string(": Frame received, consists of ");
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e2e37bea
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henryk
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DumpUIntToUSB(rx_frame->numbytes);
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6be69f0d
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henryk
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usb_print_string(" bytes and ");
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e2e37bea
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henryk
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DumpUIntToUSB(rx_frame->numbits);
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6be69f0d
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henryk
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usb_print_string(" bits: ");
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e2e37bea
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henryk
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DumpBufferToUSB((char*)rx_frame->data, rx_frame->numbytes + (rx_frame->numbits+7)/8 );
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6be69f0d
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henryk
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usb_print_string("\n\r");
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portENTER_CRITICAL();
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e2e37bea
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henryk
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rx_frame->state = FRAME_FREE;
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6be69f0d
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henryk
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portEXIT_CRITICAL();
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} else {
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if(res != -ETIMEDOUT) {
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usb_print_string("Receive error: ");
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switch(res) {
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case -ENETDOWN: usb_print_string("PLL is not locked or PLL lock lost\n\r"); break;
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case -EBUSY: usb_print_string("A Tx is currently running or pending, can't receive\n\r"); break;
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case -EALREADY: usb_print_string("There's already an iso14443_receive() invocation running\n\r"); break;
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}
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vTaskDelay(1000 * portTICK_RATE_MS); // FIXME Proper error handling, e.g. wait for Tx end in case of EBUSY
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} else if(0) {
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DumpStringToUSB("\n\r");
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DumpTimeToUSB(xTaskGetTickCount());
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usb_print_string(": -- Mark --");
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}
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}
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}
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}
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