Add scanner

protocol.py

@@ -1,6 +1,7 @@
 import serial
 import struct
 import time
+import time
 
 def crc8(data: bytes) -> int:
     crc = 0x00
@@ -15,13 +16,16 @@ class I2CPCClient:
     def __init__(self, port, baudrate=115200, timeout=1):
         self.ser = serial.Serial(port=port, baudrate=baudrate, timeout=timeout)
 
-        # Gurantees resync
         self.ser.write(b"~/")
-        self.ser.write(b"\x00"*64)
+        self.ser.write(b"\x00"*128)
         self.ser.flush()
         self.ser.write(b"~/")
         self.ser.flush()
-        while not ((d := self.ser.read_all()) and b"\xff" in d): time.sleep(0.01)
+
+        start = time.monotonic()
+        while not ((d := self.ser.read_all()) and b"\xff" in d):
+            time.sleep(0.01)
+            if ((time.monotonic()) - start) > 5: raise ConnectionError("Could not wake")
 
     def _send_packet(self, payload: bytes, crc: bool = True):
         if len(payload) > 127: raise ValueError("Payload too large")