RfidResearchGroup/proxmark3
1
1
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-01-02 21:54:10 +08:00
Code Issues Projects Releases Packages Wiki Activity

CHG: Minor tweaks, the tracing dissappeared, the spindelay for powering up too long.

Browse source
This commit is contained in:
iceman1001 2016-09-26 21:40:05 +02:00
parent 323e05cc20
commit 584e28e54b
1 changed files with 3 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
armsrc/legicrf.c
View file

@ -68,10 +68,6 @@ static void setup_timer(void) {
*/
// At TIMER_CLOCK3 (MCK/32)
//#define RWD_TIME_1 150 /* RWD_TIME_PAUSE off, 80us on = 100us */
//#define RWD_TIME_0 90 /* RWD_TIME_PAUSE off, 40us on = 60us */
//#define RWD_TIME_PAUSE 30 /* 20us */
// testing calculating in (us) microseconds.
#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
@ -290,7 +286,6 @@ static void frame_receiveAsReader(struct legic_frame * const f, uint8_t bits) {
AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DIN;
// calibrate the prng.
//
legic_prng_forward(2);
// precompute the cipher
@ -365,7 +360,7 @@ static uint32_t setup_phase_reader(uint8_t iv) {
// Switch on carrier and let the tag charge for 1ms
HIGH(GPIO_SSC_DOUT);
WaitUS(1000);
WaitUS(100);
ResetTicks();
@ -423,7 +418,6 @@ static void switch_off_tag_rwd(void) {
LOW(GPIO_SSC_DOUT);
WaitUS(20);
WDT_HIT();
set_tracing(FALSE);
}
// calculate crc4 for a legic READ command
@ -449,8 +443,8 @@ int legic_read_byte(int byte_index, int cmd_sz) {
// 460 | 690
// 258 | 387
// 244 | 366
WaitTicks(387);
legic_prng_forward(4); // 460 / 100 = 4.6 iterations
WaitTicks(495);
legic_prng_forward(3); // 460 / 100 = 4.6 iterations
frame_sendAsReader(cmd, cmd_sz);
frame_receiveAsReader(&current_frame, 12);