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https://github.com/RfidResearchGroup/proxmark3.git
synced 2025-08-21 13:53:55 -07:00
CHG: minor code clean up, removed commented old code.
ADD: usb_poll_validate_length to some deviceside loops. ADD: @marshmellow42 's fixes to LF
This commit is contained in:
iceman1001
parent
bca7107931
commit
edaf10af99
4 changed files with 66 additions and 61 deletions
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@ -81,38 +81,39 @@ static void setup_timer(void)
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/* Generate Keystream */
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static uint32_t get_key_stream(int skip, int count)
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{
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uint32_t key=0; int i;
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uint32_t key=0; int i;
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/* Use int to enlarge timer tc to 32bit */
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legic_prng_bc += prng_timer->TC_CV;
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prng_timer->TC_CCR = AT91C_TC_SWTRG;
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/* Use int to enlarge timer tc to 32bit */
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legic_prng_bc += prng_timer->TC_CV;
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prng_timer->TC_CCR = AT91C_TC_SWTRG;
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/* If skip == -1, forward prng time based */
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if(skip == -1) {
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i = (legic_prng_bc+SIM_SHIFT)/SIM_DIVISOR; /* Calculate Cycles based on timer */
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i -= legic_prng_count(); /* substract cycles of finished frames */
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i -= count; /* substract current frame length, rewidn to bedinning */
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legic_prng_forward(i);
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} else {
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legic_prng_forward(skip);
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}
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/* If skip == -1, forward prng time based */
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if(skip == -1) {
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i = (legic_prng_bc+SIM_SHIFT)/SIM_DIVISOR; /* Calculate Cycles based on timer */
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i -= legic_prng_count(); /* substract cycles of finished frames */
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i -= count; /* substract current frame length, rewidn to bedinning */
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legic_prng_forward(i);
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} else {
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legic_prng_forward(skip);
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}
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/* Write Time Data into LOG */
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uint8_t *BigBuf = BigBuf_get_addr();
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if(count == 6) { i = -1; } else { i = legic_read_count; }
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BigBuf[OFFSET_LOG+128+i] = legic_prng_count();
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BigBuf[OFFSET_LOG+256+i*4] = (legic_prng_bc >> 0) & 0xff;
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BigBuf[OFFSET_LOG+256+i*4+1] = (legic_prng_bc >> 8) & 0xff;
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BigBuf[OFFSET_LOG+256+i*4+2] = (legic_prng_bc >>16) & 0xff;
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BigBuf[OFFSET_LOG+256+i*4+3] = (legic_prng_bc >>24) & 0xff;
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BigBuf[OFFSET_LOG+384+i] = count;
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/* Write Time Data into LOG */
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uint8_t *BigBuf = BigBuf_get_addr();
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i = (count == 6) ? -1 : legic_read_count;
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/* Generate KeyStream */
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for(i=0; i<count; i++) {
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key |= legic_prng_get_bit() << i;
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legic_prng_forward(1);
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}
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return key;
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BigBuf[OFFSET_LOG+128+i] = legic_prng_count();
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BigBuf[OFFSET_LOG+256+i*4] = (legic_prng_bc >> 0) & 0xff;
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BigBuf[OFFSET_LOG+256+i*4+1] = (legic_prng_bc >> 8) & 0xff;
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BigBuf[OFFSET_LOG+256+i*4+2] = (legic_prng_bc >>16) & 0xff;
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BigBuf[OFFSET_LOG+256+i*4+3] = (legic_prng_bc >>24) & 0xff;
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BigBuf[OFFSET_LOG+384+i] = count;
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/* Generate KeyStream */
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for(i=0; i<count; i++) {
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key |= legic_prng_get_bit() << i;
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legic_prng_forward(1);
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}
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return key;
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}
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/* Send a frame in tag mode, the FPGA must have been set up by
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@ -145,11 +146,11 @@ static void frame_send_tag(uint16_t response, int bits, int crypt)
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int nextbit = timer->TC_CV + TAG_TIME_BIT;
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int bit = response & 1;
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response = response >> 1;
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if(bit) {
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if(bit)
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AT91C_BASE_PIOA->PIO_SODR = GPIO_SSC_DOUT;
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} else {
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else
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AT91C_BASE_PIOA->PIO_CODR = GPIO_SSC_DOUT;
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}
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while(timer->TC_CV < nextbit) ;
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}
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AT91C_BASE_PIOA->PIO_CODR = GPIO_SSC_DOUT;
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@ -171,11 +172,11 @@ static void frame_send_rwd(uint32_t data, int bits)
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int bit = data & 1;
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data = data >> 1;
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if(bit ^ legic_prng_get_bit()) {
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if(bit ^ legic_prng_get_bit())
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bit_end = starttime + RWD_TIME_1;
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} else {
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else
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bit_end = starttime + RWD_TIME_0;
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}
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/* RWD_TIME_PAUSE time off, then some time on, so that the complete bit time is
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* RWD_TIME_x, where x is the bit to be transmitted */
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@ -184,16 +185,15 @@ static void frame_send_rwd(uint32_t data, int bits)
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AT91C_BASE_PIOA->PIO_SODR = GPIO_SSC_DOUT;
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legic_prng_forward(1); /* bit duration is longest. use this time to forward the lfsr */
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while(timer->TC_CV < bit_end) ;
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while(timer->TC_CV < bit_end);
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}
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{
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/* One final pause to mark the end of the frame */
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int pause_end = timer->TC_CV + RWD_TIME_PAUSE;
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AT91C_BASE_PIOA->PIO_CODR = GPIO_SSC_DOUT;
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while(timer->TC_CV < pause_end) ;
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AT91C_BASE_PIOA->PIO_SODR = GPIO_SSC_DOUT;
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}
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/* One final pause to mark the end of the frame */
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int pause_end = timer->TC_CV + RWD_TIME_PAUSE;
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AT91C_BASE_PIOA->PIO_CODR = GPIO_SSC_DOUT;
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while(timer->TC_CV < pause_end) ;
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AT91C_BASE_PIOA->PIO_SODR = GPIO_SSC_DOUT;
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/* Reset the timer, to measure time until the start of the tag frame */
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timer->TC_CCR = AT91C_TC_SWTRG;
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@ -239,8 +239,7 @@ static void frame_receive_rwd(struct legic_frame * const f, int bits, int crypt)
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* since we cannot compute it on the fly while reading */
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legic_prng_forward(2);
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if(crypt)
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{
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if(crypt) {
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for(i=0; i<bits; i++) {
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data |= legic_prng_get_bit() << i;
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legic_prng_forward(1);
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@ -277,9 +276,9 @@ static void frame_receive_rwd(struct legic_frame * const f, int bits, int crypt)
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static void frame_append_bit(struct legic_frame * const f, int bit)
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{
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if(f->bits >= 31) {
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if(f->bits >= 31)
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return; /* Overflow, won't happen */
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}
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f->data |= (bit<<f->bits);
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f->bits++;
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}
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@ -448,12 +447,11 @@ int LegicRfReader(int offset, int bytes) {
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Dbprintf("Unknown card format: %x",tag_type);
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return -1;
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}
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if(bytes == -1) {
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if(bytes == -1)
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bytes = card_sz;
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}
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if(bytes+offset >= card_sz) {
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if(bytes+offset >= card_sz)
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bytes = card_sz-offset;
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}
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perform_setup_phase_rwd(SESSION_IV);
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@ -1304,6 +1304,9 @@ void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT) {
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// load chip config block
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data[0] = T55x7_BITRATE_RF_50 | T55x7_MODULATION_FSK2a | last_block << T55x7_MAXBLOCK_SHIFT;
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//TODO add selection of chip for Q5 or T55x7
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// data[0] = (((50-2)/2)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | last_block << T5555_MAXBLOCK_SHIFT;
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LED_D_ON();
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// Program the data blocks for supplied ID
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// and the block 0 for HID format
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@ -1316,6 +1319,8 @@ void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT) {
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void CopyIOtoT55x7(uint32_t hi, uint32_t lo) {
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uint32_t data[] = {T55x7_BITRATE_RF_64 | T55x7_MODULATION_FSK2a | (2 << T55x7_MAXBLOCK_SHIFT), hi, lo};
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//TODO add selection of chip for Q5 or T55x7
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// data[0] = (((64-2)/2)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 2 << T5555_MAXBLOCK_SHIFT;
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LED_D_ON();
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// Program the data blocks for supplied ID
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@ -1332,6 +1337,9 @@ void CopyIndala64toT55x7(uint32_t hi, uint32_t lo) {
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//Program the 2 data blocks for supplied 64bit UID
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// and the Config for Indala 64 format (RF/32;PSK1 with RF/2;Maxblock=2)
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uint32_t data[] = { T55x7_BITRATE_RF_32 | T55x7_MODULATION_PSK1 | (2 << T55x7_MAXBLOCK_SHIFT), hi, lo};
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//TODO add selection of chip for Q5 or T55x7
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// data[0] = (((32-2)/2)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_PSK1 | 2 << T5555_MAXBLOCK_SHIFT;
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WriteT55xx(data, 0, 3);
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//Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=2;Inverse data)
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// T5567WriteBlock(0x603E1042,0);
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@ -1344,6 +1352,8 @@ void CopyIndala224toT55x7(uint32_t uid1, uint32_t uid2, uint32_t uid3, uint32_t
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// and the block 0 for Indala224 format
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//Config for Indala (RF/32;PSK1 with RF/2;Maxblock=7)
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data[0] = T55x7_BITRATE_RF_32 | T55x7_MODULATION_PSK1 | (7 << T55x7_MAXBLOCK_SHIFT);
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//TODO add selection of chip for Q5 or T55x7
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// data[0] = (((32-2)/2)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_PSK1 | 7 << T5555_MAXBLOCK_SHIFT;
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WriteT55xx(data, 0, 8);
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//Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=7;Inverse data)
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// T5567WriteBlock(0x603E10E2,0);
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@ -1415,19 +1425,20 @@ void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo) {
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// Write EM410x ID
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uint32_t data[] = {0, id>>32, id & 0xFFFFFFFF};
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if (card) {
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clock = (card & 0xFF00) >> 8;
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clock = (clock == 0) ? 64 : clock;
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Dbprintf("Clock rate: %d", clock);
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if (card & 0xFF) { //t55x7
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clock = GetT55xxClockBit(clock);
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if (clock == 0) {
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Dbprintf("Invalid clock rate: %d", clock);
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return;
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}
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data[0] = clock | T55x7_MODULATION_MANCHESTER | (2 << T55x7_MAXBLOCK_SHIFT);
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} else {
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data[0] = (0x1F << T5555_BITRATE_SHIFT) | T5555_MODULATION_MANCHESTER | (2 << T5555_MAXBLOCK_SHIFT);
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} else { //t5555 (Q5)
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clock = (clock-2)>>1; //n = (RF-2)/2
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data[0] = (clock << T5555_BITRATE_SHIFT) | T5555_MODULATION_MANCHESTER | (2 << T5555_MAXBLOCK_SHIFT);
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}
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WriteT55xx(data, 0, 3);
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@ -141,7 +141,7 @@ uint32_t DoAcquisition(uint8_t decimation, uint32_t bits_per_sample, bool averag
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uint32_t sample_total_numbers =0 ;
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uint32_t sample_total_saved =0 ;
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while(!BUTTON_PRESS()) {
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while(!BUTTON_PRESS() && !usb_poll_validate_length() ) {
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WDT_HIT();
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if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
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AT91C_BASE_SSC->SSC_THR = 0x43;
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@ -269,7 +269,7 @@ void doT55x7Acquisition(size_t sample_size) {
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uint8_t curSample = 0;
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uint8_t firstSample = 0;
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uint16_t skipCnt = 0;
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while(!BUTTON_PRESS() && skipCnt<1000) {
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while(!BUTTON_PRESS() && !usb_poll_validate_length() && skipCnt<1000) {
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WDT_HIT();
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if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
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AT91C_BASE_SSC->SSC_THR = 0x43;
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@ -1220,10 +1220,6 @@ int CmdFSKdemodIO(const char *Cmd)
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//print full AWID Prox ID and some bit format details if found
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int CmdFSKdemodAWID(const char *Cmd)
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{
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//int verbose=1;
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//sscanf(Cmd, "%i", &verbose);
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//raw fsk demod no manchester decoding no start bit finding just get binary from wave
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uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
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size_t size = getFromGraphBuf(BitStream);
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@ -1254,7 +1250,7 @@ int CmdFSKdemodAWID(const char *Cmd)
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// | | | | | | |
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// 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
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// -----------------------------------------------------------------------------
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// 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
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// 00000001 000 1 110 1 101 1 011 1 1 d01 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
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// premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
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// |---26 bit---| |-----117----||-------------142-------------|
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// b = format bit len, o = odd parity of last 3 bits
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