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fix(iso15): request 1-slot inventory in scan() so UID parses correctly

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scan() sent flags=0x06 (16-slot inventory). Since 16-slot became the firmware default, the device replies with an iso15_slot_result_t struct, which this parser misread as a zeroed UID (response_flags 16, uid 0000...). Set SLOT1 (0x26) to get the simple single-tag [flags][dsfid][uid] response. Use hf 15 reader --all for multi-tag anti-collision.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
michael
2026-07-04 22:13:50 -07:00
parent 8f0da9640c
commit 687c92a7f7
1 changed files with 6 additions and 2 deletions
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8
pm3py/core/hf_iso15.py
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@@ -27,8 +27,12 @@ class HF15Commands:
async def scan(self) -> dict:
"""Scan for ISO15693 tags using inventory command."""
# ISO15693 inventory: flags=0x06 (high data rate + inventory), cmd=0x01
iso_cmd = bytes([0x06, 0x01, 0x00]) # flags, inventory cmd, mask_len=0
# ISO15693 inventory: flags=0x26 (high data rate + inventory + 1-slot), cmd=0x01.
# SLOT1 (0x20) is required: without it the firmware runs a 16-slot anti-collision
# round and replies with an iso15_slot_result_t struct, not [flags][dsfid][uid],
# so this parser would read the struct header as a zeroed UID. 1-slot gives the
# simple single-tag response this method expects. Use hf 15 reader --all for many.
iso_cmd = bytes([0x26, 0x01, 0x00]) # flags, inventory cmd, mask_len=0
flags = ISO15_CONNECT | ISO15_READ_RESPONSE | ISO15_APPEND_CRC
payload = struct.pack("<BH", flags, len(iso_cmd)) + iso_cmd
resp = await self._t.send_ng(Cmd.HF_ISO15693_COMMAND, payload, timeout=5.0)