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1
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/* main_reqa - OpenPCD firmware for generating an endless loop of
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2
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* ISO 14443-A REQA packets. Alternatively we can send WUPA, or
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3
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* perform a full ISO14443A anti-collision loop.
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*
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* If a response is received from the PICC, LED1 (Red) will be switched
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* on. If no valid response has been received within the timeout of the
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* receiver, LED1 (Red) will be switched off.
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*
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* (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
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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; either version 2 of the License, or
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* (at your option) any later version.
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*
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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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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <errno.h>
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#include <string.h>
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#include <lib_AT91SAM7.h>
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#include <librfid/rfid_layer2_iso14443a.h>
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31
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#include "rc632.h"
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32
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#include <os/dbgu.h>
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33
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#include <os/led.h>
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34
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#include <os/pcd_enumerate.h>
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35
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#include <os/trigger.h>
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36
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#include <pcd/rc632_highlevel.h>
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37
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#include <librfid/rfid_reader.h>
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39
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#include <librfid/rfid_layer2.h>
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40
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41
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#include "../openpcd.h"
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42
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#ifdef WITH_TC
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#include "tc.h"
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#endif
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46
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47
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#define RAH NULL
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48
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static struct rfid_reader_handle *rh;
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50
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static struct rfid_layer2_handle *l2h;
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51
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52
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void _init_func(void)
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{
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54
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trigger_init();
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55
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DEBUGPCRF("enabling RC632");
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56
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rc632_init();
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57
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#ifdef WITH_TC
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58
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DEBUGPCRF("enabling TC");
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59
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tc_cdiv_init();
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60
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#endif
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61
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DEBUGPCRF("turning on RF");
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rc632_turn_on_rf(RAH);
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63
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DEBUGPCRF("initializing 14443A operation");
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rh = rfid_reader_open(NULL, RFID_READER_OPENPCD);
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l2h = rfid_layer2_init(rh, RFID_LAYER2_ISO14443A);
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66
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}
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67
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#define MODE_REQA 0x01
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#define MODE_WUPA 0x02
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#define MODE_ANTICOL 0x03
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#define MODE_14443A 0x04
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72
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static volatile int mode = MODE_REQA;
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74
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75
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static const char frame_14443a[] = {
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0x00, 0xff, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66,
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77
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0x00, 0xff, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66,
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78
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0x00, 0xff, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66,
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79
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0x00, 0xff, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66,
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80
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0x00, 0xff, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66,
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81
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0x00, 0xff, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66,
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0x00, 0xff, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66,
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0x00, 0xff, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66,
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84
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};
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85
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86
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static void reg_inc(uint8_t reg)
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{
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uint8_t val;
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opcd_rc632_reg_read(RAH, reg, &val);
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opcd_rc632_reg_write(RAH, reg, val++);
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DEBUGPCRF("reg 0x%02x = 0x%02x", reg, val);
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}
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93
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static void reg_dec(uint8_t reg)
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{
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uint8_t val;
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opcd_rc632_reg_read(RAH, reg, &val);
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opcd_rc632_reg_write(RAH, reg, val--);
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DEBUGPCRF("reg 0x%02x = 0x%02x", reg, val);
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}
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101
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static uint8_t ana_out_sel;
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103
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static uint8_t mfout_sel;
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static uint8_t speed_idx;
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105
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106
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static void help(void)
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{
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DEBUGPCR("r: REQA w: WUPA a: ANTICOL\r\n"
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"A: 14443A +: inc speed -: dec speed\r\n"
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"y: inc cw cond x: dec cond c: inc mod cond");
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DEBUGPCR("v: dec mod cond o: dec ana_out p: dec ana_out\r\n"
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"h: trigger high l: trigger low u: dec MFOUT mode");
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DEBUGPCR("i: inc MFOUT md <: dec cdiv ph >: inc cdiv phase\r\n"
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114
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"{: dev cdiv }: inc cdiv");
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}
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116
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static uint16_t cdivs[] = { 128, 64, 32, 16 };
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118
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119
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int _main_dbgu(char key)
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{
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int ret = 0;
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122
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static int cdiv_idx = 2;
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123
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switch (key) {
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case '?':
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help();
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break;
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case 'r':
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mode = MODE_REQA;
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break;
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case 'w':
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mode = MODE_WUPA;
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break;
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case 'A':
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135
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mode = MODE_14443A;
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136
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break;
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case 'a':
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mode = MODE_ANTICOL;
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break;
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/* Those below don't work as long as
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141
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* iso14443a_init() is called before
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142
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* every cycle */
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143
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case 'y':
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reg_inc(RC632_REG_CW_CONDUCTANCE);
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145
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break;
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case 'x':
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reg_dec(RC632_REG_CW_CONDUCTANCE);
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break;
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149
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case 'c':
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150
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reg_inc(RC632_REG_MOD_CONDUCTANCE);
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151
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break;
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152
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case 'v':
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153
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reg_dec(RC632_REG_MOD_CONDUCTANCE);
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154
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break;
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155
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case 'o':
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156
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if (ana_out_sel > 0) {
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157
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ana_out_sel--;
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158
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DEBUGPCR("switching to analog output mode 0x%x\n", ana_out_sel);
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159
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opcd_rc632_reg_write(RAH, RC632_REG_TEST_ANA_SELECT,
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160
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ana_out_sel);
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161
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}
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ret = 1;
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break;
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164
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case 'p':
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165
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if (ana_out_sel < 0xc) {
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166
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ana_out_sel++;
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167
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DEBUGPCR("switching to analog output mode 0x%x\n", ana_out_sel);
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168
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opcd_rc632_reg_write(RAH, RC632_REG_TEST_ANA_SELECT,
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ana_out_sel);
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170
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}
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ret = 1;
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break;
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173
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case 'u':
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if (mfout_sel > 0) {
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175
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mfout_sel--;
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176
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DEBUGPCR("switching to MFOUT mode 0x%x\n", mfout_sel);
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opcd_rc632_reg_write(RAH, RC632_REG_MFOUT_SELECT, mfout_sel);
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178
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}
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ret = 1;
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180
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break;
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181
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case 'i':
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182
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if (mfout_sel < 5) {
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183
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mfout_sel++;
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184
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DEBUGPCR("switching to MFOUT mode 0x%x\n", mfout_sel);
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185
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opcd_rc632_reg_write(RAH, RC632_REG_MFOUT_SELECT, mfout_sel);
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186
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}
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187
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ret = 1;
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188
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break;
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189
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case 'h':
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190
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AT91F_PIO_SetOutput(AT91C_BASE_PIOA, OPENPCD_PIO_TRIGGER);
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191
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break;
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192
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case 'l':
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193
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AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, OPENPCD_PIO_TRIGGER);
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194
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break;
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195
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#ifdef WITH_TC
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196
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case '<':
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197
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tc_cdiv_phase_inc();
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198
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break;
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199
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case '>':
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200
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tc_cdiv_phase_dec();
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201
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break;
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202
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case '{':
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203
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if (cdiv_idx > 0)
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204
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cdiv_idx--;
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205
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tc_cdiv_set_divider(cdivs[cdiv_idx]);
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206
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break;
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207
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case '}':
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208
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if (cdiv_idx < ARRAY_SIZE(cdivs)-1)
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209
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cdiv_idx++;
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210
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tc_cdiv_set_divider(cdivs[cdiv_idx]);
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211
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break;
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212
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#endif
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213
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case '-':
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214
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if (speed_idx > 0)
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215
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speed_idx--;
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216
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break;
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217
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case '+':
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218
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if (speed_idx < 3)
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219
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speed_idx++;
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220
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break;
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221
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default:
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222
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return -EINVAL;
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223
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}
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224
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|
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225
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return ret;
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226
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}
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227
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|
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228
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void _main_func(void)
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229
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{
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230
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int status;
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231
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struct iso14443a_atqa atqa;
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232
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volatile int i;
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233
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|
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234
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/* FIXME: why does this only work every second attempt without reset or
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235
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* power-cycle? */
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236
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//rc632_turn_off_rf();
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237
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//rc632_reset();
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238
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//rc632_turn_on_rf();
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239
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|
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240
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opcd_rc632_reg_write(RAH, RC632_REG_TEST_ANA_SELECT, ana_out_sel);
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241
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opcd_rc632_reg_write(RAH, RC632_REG_MFOUT_SELECT, mfout_sel);
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242
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for (i = 0; i < 0xfffff; i++) {}
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243
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//rc632_dump();
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244
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#ifdef WITH_TC
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245
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tc_cdiv_print();
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246
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#endif
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247
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|
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248
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switch (mode) {
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249
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case MODE_REQA:
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250
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status = iso14443a_transceive_sf(l2h, ISO14443A_SF_CMD_REQA, &atqa);
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251
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if (status < 0)
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252
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DEBUGPCRF("error during transceive_sf REQA");
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253
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else
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254
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DEBUGPCRF("received ATQA: %s", hexdump((char *)&atqa, sizeof(atqa)));
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255
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break;
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256
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case MODE_WUPA:
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257
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status = iso14443a_transceive_sf(l2h, ISO14443A_SF_CMD_WUPA, &atqa);
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258
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if (status < 0)
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259
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DEBUGPCRF("error during transceive_sf WUPA");
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260
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else
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261
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DEBUGPCRF("received WUPA: %s", hexdump((char *)&atqa, sizeof(atqa)));
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262
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break;
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263
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case MODE_ANTICOL:
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264
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status = rfid_layer2_open(l2h);
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265
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if (status < 0)
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266
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DEBUGPCR("error during anticol");
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267
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else
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268
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DEBUGPCR("Anticol OK");
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269
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break;
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270
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case MODE_14443A:
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271
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{
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272
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char rx_buf[4];
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273
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int rx_len = sizeof(rx_buf);
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274
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rfid_layer2_setopt(l2h, RFID_OPT_14443A_SPEED_RX,
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275
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&speed_idx, sizeof(speed_idx));
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276
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rfid_layer2_setopt(l2h, RFID_OPT_14443A_SPEED_TX,
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277
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&speed_idx, sizeof(speed_idx));
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278
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rfid_layer2_transceive(l2h, RFID_14443A_FRAME_REGULAR,
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279
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&frame_14443a, sizeof(frame_14443a),
|
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280
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&rx_buf, &rx_len, 1, 0);
|
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281
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}
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282
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break;
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|
283
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}
|
|
284
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|
|
285
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if (status < 0)
|
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286
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led_switch(1, 0);
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287
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else
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288
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led_switch(1, 1);
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289
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|
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290
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led_toggle(2);
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291
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|
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292
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}
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