static inline void
rfid_init_emulator (void)
{
/* enable timer 32_0 */
LPC_SYSCON->SYSAHBCLKCTRL |= EN_CT32B0;
/* reset and stop counter */
LPC_TMR32B0->TCR = 0x02;
LPC_TMR32B0->TCR = 0x00;
/* enable CT32B0_CAP0 timer clock */
LPC_IOCON->PIO1_5 = 0x02;
/* no capturing */
LPC_TMR32B0->CCR = 0x00;
/* no match */
LPC_TMR32B0->MCR = 0;
LPC_TMR32B0->EMR = 0;
LPC_TMR32B0->PWMC = 0;
/* incremented upon CAP0 input rising edge */
LPC_TMR32B0->CTCR = 0x01;
/* disable prescaling */
LPC_TMR32B0->PR = 0;
/* run counter */
LPC_TMR32B0->TCR = 0x01;
/* enable RxMultiple mode */
rfid_write_register (0x6303, 0x0C);
/* disable parity for TX/RX */
rfid_write_register (0x630D, 0x10);
/* enable SVDD switch */
rfid_write_register (0x6306, 0x2F);
rfid_write_register (0x6307, 0x03);
rfid_write_register (0x6106, 0x10);
/* enable secure clock */
rfid_write_register (0x6330, 0x80);
rfid_write_register (0x6104, 0x00);
/* output envelope to AUX1 */
#if 1
rfid_write_register (0x6321, 0x34);
rfid_write_register (0x6322, 0x0E);
#else
rfid_write_register (0x6321, 0x32);
rfid_write_register (0x6322, 0x02);
#endif
rfid_write_register (0x6328, 0xF9);
/* WTF? FIXME !!! */
LPC_SYSCON->SYSAHBCLKCTRL |= EN_CT32B0;
}
static void
loop_rfid (void)
{
int res;
static unsigned char data[80];
/* release reset line after 400ms */
pmu_wait_ms (400);
rfid_reset (1);
/* wait for PN532 to boot */
pmu_wait_ms (100);
/* fully initialized */
GPIOSetValue (LED_PORT, LED_BIT, LED_ON);
/* read firmware revision */
debug_printf ("\nreading firmware version...\n");
data[0] = PN532_CMD_GetFirmwareVersion;
while ((res = rfid_execute (&data, 1, sizeof (data))) < 0)
{
debug_printf ("Reading Firmware Version Error [%i]\n", res);
pmu_wait_ms (450);
GPIOSetValue (LED_PORT, LED_BIT, LED_ON);
pmu_wait_ms (10);
GPIOSetValue (LED_PORT, LED_BIT, LED_OFF);
}
debug_printf ("PN532 Firmware Version: ");
if (data[1] != 0x32)
rfid_hexdump (&data[1], data[0]);
else
debug_printf ("v%i.%i\n", data[2], data[3]);
/* enable debug output */
debug_printf ("\nenabling debug output...\n");
rfid_write_register (0x6328, 0xFC);
// select test bus signal
rfid_write_register (0x6321, 6);
// select test bus type
rfid_write_register (0x6322, 0x07);
/* enable debug output */
GPIOSetValue (LED_PORT, LED_BIT, LED_ON);
while (1)
{
/* wait 10ms */
pmu_wait_ms (10);
/* detect cards in field */
data[0] = PN532_CMD_InListPassiveTarget;
data[1] = 0x01; /* MaxTg - maximum cards */
data[2] = 0x00; /* BrTy - 106 kbps type A */
if (((res = rfid_execute (&data, 3, sizeof (data))) >= 11) && (data[1]
== 0x01)
&& (data[2] == 0x01))
{
GPIOSetValue (LED_PORT, LED_BIT, LED_ON);
pmu_wait_ms (50);
GPIOSetValue (LED_PORT, LED_BIT, LED_OFF);
debug_printf ("card id: ");
rfid_hexdump (&data[7], data[6]);
}
else
{
GPIOSetValue (LED_PORT, LED_BIT, LED_ON);
if (res != -8)
debug_printf ("PN532 error res=%i\n", res);
}
/* turning field off */
data[0] = PN532_CMD_RFConfiguration;
data[1] = 0x01; /* CfgItem = 0x01 */
data[2] = 0x00; /* RF Field = off */
rfid_execute (&data, 3, sizeof (data));
}
}
