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armsrc/sam_seos.c: cleanup in sam_seos_copy_payload_nfc2sam

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This commit is contained in:
Jakub Kramarz 2025-01-05 20:45:30 +01:00
commit d8ebec6baa
1 changed files with 13 additions and 17 deletions
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30
armsrc/sam_seos.c
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@ -135,26 +135,22 @@ inline static uint16_t sam_seos_copy_payload_nfc2sam(uint8_t *sam_tx, uint8_t *
// 81 02
// 00 00
sam_tx[0] = 0xBD;
const uint8_t payload[] = {
0xbd, 4,
0xa0, 2,
0xa0, 0
};
sam_tx[2] = 0xA0;
const uint8_t tag81[] = {
0x00, 0x00
};
sam_tx[4] = 0xA0;
memcpy(sam_tx, payload, sizeof(payload));
sam_tx[6] = 0x80;
sam_tx[7] = nfc_len;
memcpy(sam_tx+8, nfc_rx, nfc_len);
sam_tx[8+nfc_len] = 0x81;
sam_tx[9+nfc_len] = 0x02;
sam_tx[10+nfc_len] = 0x00;
sam_tx[11+nfc_len] = 0x00;
// fix lengths
sam_tx[5] = 2 + nfc_len + 4;
sam_tx[3] = sam_tx[5] + 2;
sam_tx[1] = sam_tx[3] + 2;
return sam_tx[1] + 2;
sam_append_asn1_node(sam_tx, sam_tx+4, 0x80, nfc_rx, nfc_len);
sam_append_asn1_node(sam_tx, sam_tx+4, 0x81, tag81, sizeof(tag81));
return sam_tx[1] + 2; // length of the ASN1 tree
}
/**