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Fix ghost PN5180 mifare cards

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whowechina 2024-05-24 22:10:37 +08:00
parent 0bd8258a9d
commit f326db8329
2 changed files with 16 additions and 2 deletions
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Production/Firmware/aic_pico.uf2
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18
firmware/src/lib/pn5180.c
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@ -251,6 +251,7 @@ static void anti_collision(uint8_t code, uint8_t uid[5], uint8_t *sak)
}
static struct {
uint8_t atqa[2];
uint8_t buf[5];
uint8_t sak;
uint8_t uid[7];
@ -269,12 +270,24 @@ static void poll_mifare_1()
pn5180_or_reg(PN5180_REG_SYSTEM_CONFIG, 0x03);
uint8_t cmd[1] = {0x26};
pn5180_send_data(cmd, 1, 7);
pn5180_read_data(mi_poll.buf, 2);
pn5180_read_data(mi_poll.atqa, 2);
}
static void poll_mifare_2()
{
if ((memcmp(mi_poll.atqa, "\x44\x00", 2) != 0) &&
(memcmp(mi_poll.atqa, "\x04\x00", 2) != 0)) {
mi_poll.len = 0;
return;
}
anti_collision(0x93, mi_poll.buf, &mi_poll.sak);
if (mi_poll.sak == 0x00) {
mi_poll.len = 0;
return;
}
mi_poll.len = 0;
if ((mi_poll.sak & 0x04) == 0) {
memmove(mi_poll.uid, mi_poll.buf, 4);
@ -292,9 +305,10 @@ static void poll_mifare_2()
bool pn5180_poll_mifare(uint8_t uid[7], int *len)
{
DEBUG("pn5180_poll_mifare\n");
poll_mifare_1();
poll_mifare_2();
memcpy(uid, mi_poll.uid, mi_poll.len);
*len = mi_poll.len;
return *len > 0;