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This commit is contained in:
iceman1001 2020-07-14 15:57:21 +02:00
commit 99e61f82c0
1 changed files with 14 additions and 13 deletions
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27
armsrc/Standalone/lf_em4100rwc.c
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@ -34,7 +34,7 @@
#endif
#define MAX_IND 16 // 4 LEDs - 2^4 combinations
#define CLOCK 64 //for 125kHz
#define LF_CLOCK 64 // for 125kHz
// low & high - array for storage IDs. Its length must be equal.
// Predefined IDs must be stored in low[].
@ -57,34 +57,35 @@ static uint64_t rev_quads(uint64_t bits) {
}
static void fillbuff(uint8_t bit) {
memset(bba + buflen, bit, CLOCK / 2);
buflen += (CLOCK / 2);
memset(bba + buflen, bit ^ 1, CLOCK / 2);
buflen += (CLOCK / 2);
memset(bba + buflen, bit, LF_CLOCK / 2);
buflen += (LF_CLOCK / 2);
memset(bba + buflen, bit ^ 1, LF_CLOCK / 2);
buflen += (LF_CLOCK / 2);
}
static void construct_EM410x_emul(uint64_t id) {
int i, j;
int binary[4] = {0};
int parity[4] = {0};
buflen = 0;
for (uint8_t i = 0; i < 9; i++)
for (i = 0; i < 9; i++)
fillbuff(1);
for (uint8_t i = 0; i < 10; i++) {
for (uint8_t j = 3; j > 0; j--, id /= 2)
for (i = 0; i < 10; i++) {
for (j = 3; j >= 0; j--, id /= 2)
binary[j] = id % 2;
for (uint8_t j = 0; j < 4; j++)
for (j = 0; j < 4; j++)
fillbuff(binary[j]);
fillbuff(binary[0] ^ binary[1] ^ binary[2] ^ binary[3]);
for (uint8_t j = 0; j < 4; j++)
for (j = 0; j < 4; j++)
parity[j] ^= binary[j];
}
for (uint8_t j = 0; j < 4; j++)
for (j = 0; j < 4; j++)
fillbuff(parity[j]);
fillbuff(0);
@ -207,7 +208,7 @@ void RunMod(void) {
state = 0;
} else if (button_pressed == BUTTON_SINGLE_CLICK) {
// Click - write ID to tag
copy_em410x_to_t55xx(0, CLOCK, (uint32_t)(low[selected] >> 32), (uint32_t)(low[selected] & 0xffffffff));
copy_em410x_to_t55xx(0, LF_CLOCK, (uint32_t)(low[selected] >> 32), (uint32_t)(low[selected] & 0xffffffff));
led_slot(selected);
state = 0; // Switch to select mode
}