CHG: TIMER, it turns out the TC0, TC1 and TC2 is only 16bit. So adjust to use two clocks to get a 32bit timer.
CHG: code clean up in legic device side. consistency with variable names..
# define OPEN_COIL HIGH(GPIO_SSC_DOUT);
#endif
# define OPEN_COIL HIGH(GPIO_SSC_DOUT);
#endif
-uint32_t sendFrameStop = 0;
-
// Pause pulse, off in 20us / 30ticks,
// ONE / ZERO bit pulse,
// one == 80us / 120ticks
// Pause pulse, off in 20us / 30ticks,
// ONE / ZERO bit pulse,
// one == 80us / 120ticks
send = data ^ legic_prng_get_bits(bits);
for (; mask < BITMASK(bits); mask <<= 1) {
send = data ^ legic_prng_get_bits(bits);
for (; mask < BITMASK(bits); mask <<= 1) {
}
// Final pause to mark the end of the frame
COIL_PULSE(0);
}
// Final pause to mark the end of the frame
COIL_PULSE(0);
- sendFrameStop = GET_TICKS;
- uint8_t cmdbytes[] = {
- bits,
- BYTEx(data, 0),
- BYTEx(data, 1),
- BYTEx(send, 0),
- BYTEx(send, 1)
- };
- LogTrace(cmdbytes, sizeof(cmdbytes), starttime, sendFrameStop, NULL, TRUE);
+ // log
+ uint8_t cmdbytes[] = {bits, BYTEx(data, 0), BYTEx(data, 1), BYTEx(send, 0), BYTEx(send, 1)};
+ LogTrace(cmdbytes, sizeof(cmdbytes), starttime, GET_TICKS, NULL, TRUE);
}
/* Receive a frame from the card in reader emulation mode, the FPGA and
}
/* Receive a frame from the card in reader emulation mode, the FPGA and
*/
static void frame_receiveAsReader(struct legic_frame * const f, uint8_t bits) {
*/
static void frame_receiveAsReader(struct legic_frame * const f, uint8_t bits) {
if ( bits > 32 ) return;
uint8_t i = bits, edges = 0;
uint16_t lsfr = 0;
uint32_t the_bit = 1, next_bit_at = 0, data = 0;
if ( bits > 32 ) return;
uint8_t i = bits, edges = 0;
uint16_t lsfr = 0;
uint32_t the_bit = 1, next_bit_at = 0, data = 0;
+ uint32_t old_level = 0;
+ volatile uint32_t level = 0;
- int old_level = 0, level = 0;
-
AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_DIN;
AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DIN;
AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_DIN;
AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DIN;
//FIXED time between sending frame and now listening frame. 330us
uint32_t starttime = GET_TICKS;
//FIXED time between sending frame and now listening frame. 330us
uint32_t starttime = GET_TICKS;
- //uint16_t mywait = TAG_FRAME_WAIT - (starttime - sendFrameStop);
if ( bits == 6) {
//WaitTicks( 495 - 9 - 9 );
WaitTicks( 475 );
} else {
if ( bits == 6) {
//WaitTicks( 495 - 9 - 9 );
WaitTicks( 475 );
} else {
next_bit_at += TAG_BIT_PERIOD;
next_bit_at += TAG_BIT_PERIOD;
- // We expect 42 edges == ONE
+ // We expect 42 edges (ONE)
if ( edges > 20 )
data ^= the_bit;
if ( edges > 20 )
data ^= the_bit;
f->data = data;
f->bits = bits;
f->data = data;
f->bits = bits;
uint8_t cmdbytes[] = {bits, BYTEx(data, 0), BYTEx(data, 1)};
LogTrace(cmdbytes, sizeof(cmdbytes), starttime, GET_TICKS, NULL, FALSE);
}
uint8_t cmdbytes[] = {bits, BYTEx(data, 0), BYTEx(data, 1)};
LogTrace(cmdbytes, sizeof(cmdbytes), starttime, GET_TICKS, NULL, FALSE);
}
}
// calculate crc4 for a legic READ command
}
// calculate crc4 for a legic READ command
-static uint32_t legic4Crc(uint8_t legicCmd, uint16_t byte_index, uint8_t value, uint8_t cmd_sz) {
+static uint32_t legic4Crc(uint8_t cmd, uint16_t byte_index, uint8_t value, uint8_t cmd_sz) {
- uint32_t temp = (value << cmd_sz) | (byte_index << 1) | legicCmd;
+ uint32_t temp = (value << cmd_sz) | (byte_index << 1) | cmd;
crc_update(&legic_crc, temp, cmd_sz + 8 );
return crc_finish(&legic_crc);
}
crc_update(&legic_crc, temp, cmd_sz + 8 );
return crc_finish(&legic_crc);
}
-int legic_read_byte(int byte_index, int cmd_sz) {
+int legic_read_byte( uint16_t index, uint8_t cmd_sz) {
- uint8_t byte = 0, crc = 0, calcCrc = 0;
- uint32_t cmd = (byte_index << 1) | LEGIC_READ;
+ uint8_t byte, crc, calcCrc = 0;
+ uint32_t cmd = (index << 1) | LEGIC_READ;
frame_receiveAsReader(¤t_frame, 12);
byte = BYTEx(current_frame.data, 0);
frame_receiveAsReader(¤t_frame, 12);
byte = BYTEx(current_frame.data, 0);
-
- calcCrc = legic4Crc(LEGIC_READ, byte_index, byte, cmd_sz);
crc = BYTEx(current_frame.data, 1);
crc = BYTEx(current_frame.data, 1);
+
+ calcCrc = legic4Crc(LEGIC_READ, index, byte, cmd_sz);
if( calcCrc != crc ) {
Dbprintf("!!! crc mismatch: expected %x but got %x !!!", calcCrc, crc);
if( calcCrc != crc ) {
Dbprintf("!!! crc mismatch: expected %x but got %x !!!", calcCrc, crc);
-int LegicRfReader(int offset, int bytes, int iv) {
+int LegicRfReader(uint16_t offset, uint16_t len, uint8_t iv) {
- uint16_t byte_index = 0;
+ len &= 0x3FF;
+
+ uint16_t i = 0;
uint8_t isOK = 1;
legic_card_select_t card;
LegicCommonInit();
uint8_t isOK = 1;
legic_card_select_t card;
LegicCommonInit();
- if ( legic_select_card(&card) ) {
+ if ( legic_select_card_iv(&card, iv) ) {
isOK = 0;
goto OUT;
}
switch_off_tag_rwd();
isOK = 0;
goto OUT;
}
switch_off_tag_rwd();
- if (bytes == -1)
- bytes = card.cardsize;
-
- if (bytes + offset >= card.cardsize)
- bytes = card.cardsize - offset;
+ if (len + offset >= card.cardsize)
+ len = card.cardsize - offset;
- // Start setup and read bytes.
setup_phase_reader(iv);
LED_B_ON();
setup_phase_reader(iv);
LED_B_ON();
- while (byte_index < bytes) {
- int r = legic_read_byte(byte_index + offset, card.cmdsize);
+ while (i < len) {
+ int r = legic_read_byte(offset + i, card.cmdsize);
if (r == -1 || BUTTON_PRESS()) {
if (r == -1 || BUTTON_PRESS()) {
- if ( MF_DBGLEVEL >= 3) DbpString("operation aborted");
+ if ( MF_DBGLEVEL >= 2) DbpString("operation aborted");
- cardmem[byte_index++] = r;
WDT_HIT();
switch_off_tag_rwd();
LEDsoff();
WDT_HIT();
switch_off_tag_rwd();
LEDsoff();
- uint8_t len = (bytes & 0x3FF);
cmd_send(CMD_ACK,isOK,len,0,cardmem,len);
return 0;
}
cmd_send(CMD_ACK,isOK,len,0,cardmem,len);
return 0;
}
-void LegicRfWriter(int offset, int bytes, int iv) {
-
- int byte_index = 0, addr_sz = 0;
+void LegicRfWriter(uint16_t offset, uint16_t bytes, uint8_t iv) {
+ int byte_index = 0;
+ uint8_t isOK = 1;
+ legic_card_select_t card;
- if ( MF_DBGLEVEL >= 2) DbpString("setting up legic card");
- uint32_t tag_type = setup_phase_reader(iv);
+ if ( legic_select_card_iv(&card, iv) ) {
+ isOK = 0;
+ goto OUT;
+ }
case 0x0d:
if(offset+bytes > 22) {
Dbprintf("Error: can not write to 0x%03.3x on MIM22", offset + bytes);
return;
}
case 0x0d:
if(offset+bytes > 22) {
Dbprintf("Error: can not write to 0x%03.3x on MIM22", offset + bytes);
return;
}
if ( MF_DBGLEVEL >= 2) Dbprintf("MIM22 card found, writing 0x%02.2x - 0x%02.2x ...", offset, offset + bytes);
break;
case 0x1d:
if ( MF_DBGLEVEL >= 2) Dbprintf("MIM22 card found, writing 0x%02.2x - 0x%02.2x ...", offset, offset + bytes);
break;
case 0x1d:
Dbprintf("Error: can not write to 0x%03.3x on MIM256", offset + bytes);
return;
}
Dbprintf("Error: can not write to 0x%03.3x on MIM256", offset + bytes);
return;
}
if ( MF_DBGLEVEL >= 2) Dbprintf("MIM256 card found, writing 0x%02.2x - 0x%02.2x ...", offset, offset + bytes);
break;
case 0x3d:
if ( MF_DBGLEVEL >= 2) Dbprintf("MIM256 card found, writing 0x%02.2x - 0x%02.2x ...", offset, offset + bytes);
break;
case 0x3d:
Dbprintf("Error: can not write to 0x%03.3x on MIM1024", offset + bytes);
return;
}
Dbprintf("Error: can not write to 0x%03.3x on MIM1024", offset + bytes);
return;
}
if ( MF_DBGLEVEL >= 2) Dbprintf("MIM1024 card found, writing 0x%03.3x - 0x%03.3x ...", offset, offset + bytes);
break;
default:
if ( MF_DBGLEVEL >= 2) Dbprintf("MIM1024 card found, writing 0x%03.3x - 0x%03.3x ...", offset, offset + bytes);
break;
default:
- Dbprintf("No or unknown card found, aborting");
//check if the DCF should be changed
if ( ((byte_index+offset) == 0x05) && (bytes >= 0x02) ) {
//write DCF in reverse order (addr 0x06 before 0x05)
//check if the DCF should be changed
if ( ((byte_index+offset) == 0x05) && (bytes >= 0x02) ) {
//write DCF in reverse order (addr 0x06 before 0x05)
- r = legic_write_byte(cardmem[(0x06-byte_index)], (0x06-byte_index), addr_sz);
+ r = legic_write_byte(cardmem[(0x06-byte_index)], (0x06-byte_index), card.addrsize);
- // write second byte on success...
+ // write second byte on success
if(r == 0) {
byte_index++;
if(r == 0) {
byte_index++;
- r = legic_write_byte(cardmem[(0x06-byte_index)], (0x06-byte_index), addr_sz);
+ r = legic_write_byte(cardmem[(0x06-byte_index)], (0x06-byte_index), card.addrsize);
- r = legic_write_byte(cardmem[byte_index+offset], byte_index+offset, addr_sz);
+ r = legic_write_byte(cardmem[byte_index+offset], byte_index+offset, card.addrsize);
}
if ((r != 0) || BUTTON_PRESS()) {
Dbprintf("operation aborted @ 0x%03.3x", byte_index);
}
if ((r != 0) || BUTTON_PRESS()) {
Dbprintf("operation aborted @ 0x%03.3x", byte_index);
- switch_off_tag_rwd();
- LEDsoff();
- return;
}
WDT_HIT();
byte_index++;
}
}
WDT_HIT();
byte_index++;
}
- LEDsoff();
- if ( MF_DBGLEVEL >= 1) DbpString("write successful");
+
+OUT:
+ cmd_send(CMD_ACK, isOK, 0,0,0,0);
+ switch_off_tag_rwd();
+ LEDsoff();
-void LegicRfRawWriter(int address, int byte, int iv) {
+void LegicRfRawWriter(int address, int byte, uint8_t iv) {
int byte_index = 0, addr_sz = 0;
int byte_index = 0, addr_sz = 0;
if ( MF_DBGLEVEL >= 1) DbpString("write successful");
}
if ( MF_DBGLEVEL >= 1) DbpString("write successful");
}
-int legic_select_card(legic_card_select_t *p_card){
+int legic_select_card_iv(legic_card_select_t *p_card, uint8_t iv){
if ( p_card == NULL ) return 1;
if ( p_card == NULL ) return 1;
- p_card->tagtype = setup_phase_reader(0x1);
+ p_card->tagtype = setup_phase_reader(iv);
switch(p_card->tagtype) {
case 0x0d:
p_card->cmdsize = 6;
switch(p_card->tagtype) {
case 0x0d:
p_card->cmdsize = 6;
p_card->cardsize = 22;
break;
case 0x1d:
p_card->cmdsize = 9;
p_card->cardsize = 22;
break;
case 0x1d:
p_card->cmdsize = 9;
p_card->cardsize = 256;
break;
case 0x3d:
p_card->cmdsize = 11;
p_card->cardsize = 256;
break;
case 0x3d:
p_card->cmdsize = 11;
p_card->cardsize = 1024;
break;
default:
p_card->cmdsize = 0;
p_card->cardsize = 1024;
break;
default:
p_card->cmdsize = 0;
p_card->cardsize = 0;
return 2;
break;
}
return 0;
}
p_card->cardsize = 0;
return 2;
break;
}
return 0;
}
+int legic_select_card(legic_card_select_t *p_card){
+ return legic_select_card_iv(p_card, 0x01);
+}
for ( uint8_t i = 0; i < sizeof(card->uid); ++i) {
int r = legic_read_byte(i, card->cmdsize);
if ( r == -1 ) {
for ( uint8_t i = 0; i < sizeof(card->uid); ++i) {
int r = legic_read_byte(i, card->cmdsize);
if ( r == -1 ) {
card->uid[i] = r & 0xFF;
}
card->uid[i] = r & 0xFF;
}
- cmd_send(CMD_ACK, 1 ,0 , 0, buf, sizeof(legic_card_select_t));
+ cmd_send(CMD_ACK, 1, 0, 0, buf, sizeof(legic_card_select_t));
OUT:
switch_off_tag_rwd();
OUT:
switch_off_tag_rwd();
#include "legic.h" // legic_card_select_t struct
extern void LegicRfSimulate(int phase, int frame, int reqresp);
#include "legic.h" // legic_card_select_t struct
extern void LegicRfSimulate(int phase, int frame, int reqresp);
-extern int LegicRfReader(int offset, int bytes, int iv);
-extern void LegicRfWriter(int offset, int bytes, int iv);
-extern void LegicRfRawWriter(int address, int data, int iv);
+extern int LegicRfReader(uint16_t offset, uint16_t len, uint8_t iv);
+extern void LegicRfWriter(uint16_t offset, uint16_t byte, uint8_t iv);
+extern void LegicRfRawWriter(int address, int data, uint8_t iv);
extern void LegicRfInfo(void);
uint32_t get_key_stream(int skip, int count);
void frame_send_tag(uint16_t response, uint8_t bits, uint8_t crypt);
void frame_sendAsReader(uint32_t data, uint8_t bits);
extern void LegicRfInfo(void);
uint32_t get_key_stream(int skip, int count);
void frame_send_tag(uint16_t response, uint8_t bits, uint8_t crypt);
void frame_sendAsReader(uint32_t data, uint8_t bits);
+int legic_read_byte( uint16_t index, uint8_t cmd_sz);
+
int legic_select_card(legic_card_select_t *p_card);
int legic_select_card(legic_card_select_t *p_card);
+int legic_select_card_iv(legic_card_select_t *p_card, uint8_t iv);
void ice_legic_setup();
#endif /* __LEGICRF_H */
void ice_legic_setup();
#endif /* __LEGICRF_H */
// -------------------------------------------------------------------------
void StartTicks(void){
//initialization of the timer
// -------------------------------------------------------------------------
void StartTicks(void){
//initialization of the timer
+ // tc1 is higher 0xFFFF0000
+ // tc0 is lower 0x0000FFFF
AT91C_BASE_PMC->PMC_PCER |= (1 << 12) | (1 << 13) | (1 << 14);
AT91C_BASE_TCB->TCB_BMR = AT91C_TCB_TC0XC0S_NONE | AT91C_TCB_TC1XC1S_TIOA0 | AT91C_TCB_TC2XC2S_NONE;
AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS;
AT91C_BASE_PMC->PMC_PCER |= (1 << 12) | (1 << 13) | (1 << 14);
AT91C_BASE_TCB->TCB_BMR = AT91C_TCB_TC0XC0S_NONE | AT91C_TCB_TC1XC1S_TIOA0 | AT91C_TCB_TC2XC2S_NONE;
AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS;
- AT91C_BASE_TC0->TC_CMR = AT91C_TC_CLKS_TIMER_DIV3_CLOCK; //clock at 48/32 MHz
+ AT91C_BASE_TC0->TC_CMR = AT91C_TC_CLKS_TIMER_DIV3_CLOCK | // MCK(48MHz) / 32
+ AT91C_TC_WAVE | AT91C_TC_WAVESEL_UP_AUTO | AT91C_TC_ACPA_CLEAR |
+ AT91C_TC_ACPC_SET | AT91C_TC_ASWTRG_SET;
+ AT91C_BASE_TC0->TC_RA = 1;
+ AT91C_BASE_TC0->TC_RC = 0xBFFF + 1; // 0xC000
+
+ AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKDIS; // timer disable
+ AT91C_BASE_TC1->TC_CMR = AT91C_TC_CLKS_XC1; // from TC0
+
AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
+ AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
AT91C_BASE_TCB->TCB_BCR = 1;
AT91C_BASE_TCB->TCB_BCR = 1;
// wait until timer becomes zero.
// wait until timer becomes zero.
- while (AT91C_BASE_TC0->TC_CV > 1);
+ while (AT91C_BASE_TC1->TC_CV >= 1);
}
// Wait - Spindelay in ticks.
// if called with a high number, this will trigger the WDT...
}
// Wait - Spindelay in ticks.
// if called with a high number, this will trigger the WDT...
}
// Starts Clock and waits until its reset
void ResetTicks(){
}
// Starts Clock and waits until its reset
void ResetTicks(){
- ResetTimer(AT91C_BASE_TC0);
+ AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
+ AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
+ while (AT91C_BASE_TC1->TC_CV >= 1);
}
void ResetTimer(AT91PS_TC timer){
timer->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
}
void ResetTimer(AT91PS_TC timer){
timer->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
#include "proxmark3.h"
#ifndef GET_TICKS
#include "proxmark3.h"
#ifndef GET_TICKS
-# define GET_TICKS AT91C_BASE_TC0->TC_CV
+# define GET_TICKS ((AT91C_BASE_TC1->TC_CV << 16) | AT91C_BASE_TC0->TC_CV)
#endif
void SpinDelay(int ms);
#endif
void SpinDelay(int ms);
int CmdLegicRFRead(const char *Cmd) {
// params:
int CmdLegicRFRead(const char *Cmd) {
// params:
- // offset in data
- // number of bytes.
+ // offset in data memory
+ // number of bytes to read
char cmdp = param_getchar(Cmd, 0);
if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_read();
char cmdp = param_getchar(Cmd, 0);
if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_read();
// OUT-OF-BOUNDS check
if ( len + offset > MAX_LENGTH ) {
len = MAX_LENGTH - offset;
// OUT-OF-BOUNDS check
if ( len + offset > MAX_LENGTH ) {
len = MAX_LENGTH - offset;
- PrintAndLog("Out-of-bound, shorten len to %d",len);
+ PrintAndLog("Out-of-bound, shorten len to %d", len);
}
if ( (IV & 0x7F) != IV ){
}
if ( (IV & 0x7F) != IV ){
PrintAndLog("LSB of IV must be SET");
}
PrintAndLog("LSB of IV must be SET");
}
- PrintAndLog("Using IV: 0x%02x", IV);
+ //PrintAndLog("Using IV: 0x%02x | Offset: 0x%02x | Len: 0x%02x ", IV, offset, len);
UsbCommand c = {CMD_READER_LEGIC_RF, {offset, len, IV}};
clearCommandBuffer();
UsbCommand c = {CMD_READER_LEGIC_RF, {offset, len, IV}};
clearCommandBuffer();
uint8_t uid[4];
uint32_t tagtype;
uint8_t cmdsize;
uint8_t uid[4];
uint32_t tagtype;
uint8_t cmdsize;
+ uint8_t addrsize;
+ uint16_t cardsize;
} legic_card_select_t;
#endif // _LEGIC_H_
} legic_card_select_t;
#endif // _LEGIC_H_