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Fix DoA reading — skip 1-byte status header in USB response

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Response format is [status_byte, angle_lo, angle_hi, vad_lo, vad_hi],
not [angle_lo, angle_hi, vad_lo, vad_hi]. Was reading the status byte
(0x42=66) as the angle, which is why DoA was always stuck at 66.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Alex
2026-04-12 17:23:07 -05:00
parent 9b72666f78
commit 8d73aaad5e
1 changed files with 4 additions and 3 deletions
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7
xvf3800.py
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@@ -86,11 +86,12 @@ class XVF3800:
# --- DoA --- # --- DoA ---
def read_doa(self) -> tuple[int, bool]: def read_doa(self) -> tuple[int, bool]:
"""Read Direction of Arrival. Returns (angle 0-359, vad True/False).""" """Read Direction of Arrival. Returns (angle 0-359, vad True/False).
Response format: 1 status byte + 2 uint16 words (angle, vad)."""
data = self._read(GPO_RESID, DOA_VALUE_CMD, 2) # 2 uint16 words data = self._read(GPO_RESID, DOA_VALUE_CMD, 2) # 2 uint16 words
if len(data) < 4: if len(data) < 5: # 1 header + 4 data bytes
return 0, False return 0, False
angle, vad = struct.unpack_from("<HH", data) angle, vad = struct.unpack_from("<HH", data, 1) # skip 1-byte header
return angle % 360, bool(vad) return angle % 360, bool(vad)
# --- LEDs --- # --- LEDs ---