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/* main_reqa - OpenPCD firmware for generating an endless loop of
* ISO 14443-A REQA packets.
*
* If a response is received from the PICC, LED1 (Red) will be switched
* on. If no valid response has been received within the timeout of the
* receiver, LED1 (Red) will be switched off.
*
*/
#include <errno.h>
#include <string.h>
#include <librfid/rfid_layer2_iso14443a.h>
#include "rc632.h"
#include "dbgu.h"
#include "led.h"
#include "trigger.h"
#include "pcd_enumerate.h"
void _init_func(void)
{
//udp_init();
trigger_init();
rc632_init();
DEBUGPCRF("turning on RF");
rc632_turn_on_rf(RAH);
DEBUGPCRF("initializing 14443A operation");
rc632_iso14443a_init(RAH);
}
#define MODE_REQA 0x01
#define MODE_WUPA 0x02
#define MODE_ANTICOL 0x03
static volatile int mode = MODE_REQA;
static void reg_inc(u_int8_t reg)
{
u_int8_t val;
rc632_reg_read(RAH, reg, &val);
rc632_reg_write(RAH, reg, val++);
DEBUGPCRF("reg 0x%02x = 0x%02x", reg, val);
}
static void reg_dec(u_int8_t reg)
{
u_int8_t val;
rc632_reg_read(RAH, reg, &val);
rc632_reg_write(RAH, reg, val--);
DEBUGPCRF("reg 0x%02x = 0x%02x", reg, val);
}
int _main_dbgu(char key)
{
switch (key) {
case 'r':
mode = MODE_REQA;
break;
case 'w':
mode = MODE_WUPA;
break;
case 'a':
mode = MODE_ANTICOL;
break;
/* Those below don't work as long as
* iso14443a_init() is called before
* every cycle */
case 'y':
reg_inc(RC632_REG_CW_CONDUCTANCE);
break;
case 'x':
reg_dec(RC632_REG_CW_CONDUCTANCE);
break;
case 'c':
reg_inc(RC632_REG_MOD_CONDUCTANCE);
break;
case 'v':
reg_dec(RC632_REG_MOD_CONDUCTANCE);
break;
default:
return -EINVAL;
}
return 0;
}
void _main_func(void)
{
int status;
struct iso14443a_atqa atqa;
struct rfid_layer2_handle l2h;
volatile int i;
memset(&atqa, 0, sizeof(atqa));
/* fake layer2 handle initialization */
memset(&l2h, 0, sizeof(l2h));
l2h.l2 = &rfid_layer2_iso14443a;
l2h.priv.iso14443a.state = ISO14443A_STATE_NONE;
l2h.priv.iso14443a.level = ISO14443A_LEVEL_NONE;
trigger_pulse();
/* FIXME: why does this not work without reset or power-cycle? */
rc632_turn_off_rf();
//rc632_reset();
rc632_turn_on_rf();
rc632_iso14443a_init(RAH);
for (i = 0; i < 0xfff; i++) {}
//rc632_dump();
switch (mode) {
case MODE_REQA:
status = rc632_iso14443a_transceive_sf(RAH, ISO14443A_SF_CMD_REQA, &atqa);
if (status < 0)
DEBUGPCRF("error during transceive_sf REQA");
else
DEBUGPCRF("received ATQA: %s", hexdump((char *)&atqa, sizeof(atqa)));
break;
case MODE_WUPA:
status = rc632_iso14443a_transceive_sf(RAH, ISO14443A_SF_CMD_WUPA, &atqa);
if (status < 0)
DEBUGPCRF("error during transceive_sf WUPA");
else
DEBUGPCRF("received WUPA: %s", hexdump((char *)&atqa, sizeof(atqa)));
break;
case MODE_ANTICOL:
status = iso14443a_anticol(&l2h);
if (status < 0)
DEBUGPCR("error during anticol");
else
DEBUGPCR("Anticol OK");
break;
}
if (status < 0)
led_switch(1, 0);
else
led_switch(1, 1);
led_toggle(2);
}
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