import struct

filepath = "/home/prathiyuman/Prathiyuman/ContecMonitor/fiveparaminte-main/scratch/raw_contec_stream.bin"

try:
    with open(filepath, "rb") as f:
        stream = f.read()
except Exception as e:
    print(f"Error: {e}")
    import sys
    sys.exit(1)

# Find latest 288-byte and 989-byte packets
pkt_288 = None
pkt_989 = None
i = 0
while i < len(stream) - 4:
    b0, b1, b2, b3 = stream[i], stream[i+1], stream[i+2], stream[i+3]
    if b3 == 0x46:
        pkt_len = b0 | (b1 << 8)
        if pkt_len == 288 and i + pkt_len <= len(stream):
            pkt_288 = stream[i:i + pkt_len]
        elif pkt_len == 989 and i + pkt_len <= len(stream):
            pkt_989 = stream[i:i + pkt_len]
        i += max(pkt_len, 4)
    else:
        i += 1

if pkt_288:
    print("=== Scanning 288-byte packet (tail, offsets 250-287) for values 75-90 ===")
    for off in range(250, len(pkt_288) - 1, 2):
        val = struct.unpack_from('<H', pkt_288, off)[0]
        if 75 <= val <= 95:
            print(f"  Offset {off}: u16 LE = {val}")

if pkt_989:
    print("\n=== Scanning 989-byte packet (tail, offsets 900-988) for values 75-90 ===")
    for off in range(900, len(pkt_989) - 1, 2):
        val = struct.unpack_from('<H', pkt_989, off)[0]
        if 75 <= val <= 95:
            print(f"  Offset {off}: u16 LE = {val}")