- iso14443a_code_nvb_bits(&acf.nvb, 7*8);
- ret = iso14443a_transcieve(handle, (unsigned char *)&acf, 7,
- (unsigned char *) &sak, &rx_len,
- TIMEOUT, 0);
- if (ret < 0)
- return ret;
-
- if (sak[0] & 0x04) {
- /* Cascade bit set, UID not complete */
- switch (acf.sel_code) {
- case ISO14443A_AC_SEL_CODE_CL1:
- /* cascading from CL1 to CL2 */
- if (acf.uid_bits[0] != 0x88) {
- DEBUGP("Cascade bit set, but UID0 != 0x88\n");
- return -1;
- }
- memcpy(&uid[0], &acf.uid_bits[1], 3);
- acf.sel_code = ISO14443A_AC_SEL_CODE_CL2;
- handle->priv.iso14443a.level = ISO14443A_LEVEL_CL2;
- break;
- case ISO14443A_AC_SEL_CODE_CL2:
- /* cascading from CL2 to CL3 */
- memcpy(&uid[3], &acf.uid_bits[1], 3);
- acf.sel_code = ISO14443A_AC_SEL_CODE_CL3;
- handle->priv.iso14443a.level = ISO14443A_LEVEL_CL3;
- break;
- default:
- DEBUGP("cannot cascade any further than CL3\n");
- handle->priv.iso14443a.state = ISO14443A_STATE_ERROR;
- return -1;
- break;
- }
- goto cascade;
-
- } else {
- switch (acf.sel_code) {
- case ISO14443A_AC_SEL_CODE_CL1:
- /* single size UID (4 bytes) */
- memcpy(&uid[0], &acf.uid_bits[0], 4);
- break;
- case ISO14443A_AC_SEL_CODE_CL2:
- /* double size UID (7 bytes) */
- memcpy(&uid[3], &acf.uid_bits[0], 4);
- break;
- case ISO14443A_AC_SEL_CODE_CL3:
- /* triple size UID (10 bytes) */
- memcpy(&uid[6], &acf.uid_bits[0], 4);
- break;
- }
- }