#define RWD_TIME_1 120 // READER_TIME_PAUSE 20us off, 80us on = 100us 80 * 1.5 == 120ticks
#define RWD_TIME_0 60 // READER_TIME_PAUSE 20us off, 40us on = 60us 40 * 1.5 == 60ticks
#define RWD_TIME_PAUSE 30 // 20us == 20 * 1.5 == 30ticks */
-#define TAG_BIT_PERIOD 142 // 100us == 100 * 1.5 == 150ticks
+#define TAG_BIT_PERIOD 143 // 100us == 100 * 1.5 == 150ticks
#define TAG_FRAME_WAIT 495 // 330us from READER frame end to TAG frame start. 330 * 1.5 == 495
#define RWD_TIME_FUZZ 20 // rather generous 13us, since the peak detector + hysteresis fuzz quite a bit
//FIXED time between sending frame and now listening frame. 330us
uint32_t starttime = GET_TICKS;
- //if ( bits == 6 || bits == 7) {
- // its about 9+9 ticks delay from end-send to here.
- //WaitTicks( 495 - 9 - 9 );
- WaitTicks( 477 );
- //} else {
-// WaitTicks( 477 );
-// }
+ // its about 9+9 ticks delay from end-send to here.
+ WaitTicks( 477 );
next_bit_at = GET_TICKS + TAG_BIT_PERIOD;
// Switch on carrier and let the tag charge for 1ms
HIGH(GPIO_SSC_DOUT);
- WaitUS(1000);
+ WaitUS(5000);
ResetTicks();
AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT;
// reserve a cardmem, meaning we can use the tracelog function in bigbuff easier.
- cardmem = BigBuf_malloc(LEGIC_CARD_MEMSIZE);
+ cardmem = BigBuf_get_EM_addr();
memset(cardmem, 0x00, LEGIC_CARD_MEMSIZE);
clear_trace();
//WaitTicks(366);
WaitTicks(330);
- //WaitTicks(50);
frame_sendAsReader(cmd, cmd_sz);
frame_receiveAsReader(¤t_frame, 12);
crc_update(&legic_crc, addr, addr_sz);
crc_update(&legic_crc, byte, 8);
uint32_t crc = crc_finish(&legic_crc);
-
uint32_t crc2 = legic4Crc(LEGIC_WRITE, addr, byte, addr_sz+1);
- if ( crc != crc2 )
+ if ( crc != crc2 ) {
Dbprintf("crc is missmatch");
-
+ return 1;
+ }
// send write command
uint32_t cmd = ((crc <<(addr_sz+1+8)) //CRC
|(byte <<(addr_sz+1)) //Data
legic_prng_forward(2); /* we wait anyways */
- WaitUS(TAG_FRAME_WAIT);
+ WaitTicks(330);
frame_sendAsReader(cmd, cmd_sz);
-
- // wllm-rbnt doesnt have these
+
AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_DIN;
AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DIN;
edges = 0;
next_bit_at += TAG_BIT_PERIOD;
while(timer->TC_CV < next_bit_at) {
- int level = (AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_DIN);
+ volatile uint32_t level = (AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_DIN);
if(level != old_level)
edges++;
old_level = level;
}
- if(edges > 20 && edges < 60) { /* expected are 42 edges */
+ if(edges > 20 ) { /* expected are 42 edges */
int t = timer->TC_CV;
int c = t / TAG_BIT_PERIOD;
WDT_HIT();
switch_off_tag_rwd();
LEDsoff();
- cmd_send(CMD_ACK,isOK,len,0,cardmem,len);
+ cmd_send(CMD_ACK, isOK, len, 0, cardmem, len);
return 0;
}
LED_B_ON();
setup_phase_reader(iv);
+
int r = 0;
while(byte_index < bytes) {