added serial test file

Author: davidson-engineering

main.py

@@ -96,7 +96,7 @@ async def main():
         baudrate=115200,
         dict_encoding_map=manager.generate_element_id_map(),
         enable_hex=False,
-        fixed_point_scaling=True,
+        # fixed_point_scaling=True,
     )
 
     # Create the task to update the monitor manager at a fixed rate

serial_test.py

@@ -0,0 +1,58 @@
+import struct
+import serial
+
+SCALING_FACTOR = 1000  # Same scaling factor as on the Arduino
+
+
+def read_serial_data(ser):
+    while ser.in_waiting:
+        start_byte = ser.read(1)
+        if start_byte == b"\xAA":  # Check for start byte
+            main_var_id = ser.read(1)  # Main variable ID (as byte)
+            data_type = ser.read(1)  # Data type byte
+
+            if data_type == b"\x01":  # Fixed-point integer type
+                fixed_point_value = struct.unpack("<i", ser.read(4))[
+                    0
+                ]  # Read 4-byte integer
+                value = fixed_point_value / SCALING_FACTOR  # Convert to float
+            elif data_type == b"\x02":  # Char array type
+                value = b""
+                while True:
+                    char = ser.read(1)
+                    if char == b"\x00":  # Null terminator
+                        break
+                    value += char
+                value = value.decode("utf-8")  # Decode as a UTF-8 string
+
+            params_length = struct.unpack("<B", ser.read(1))[0]  # Params length
+
+            params = []
+            if params_length > 0:
+                for _ in range(params_length):
+                    param_id = ser.read(1)  # Read each param variable ID as a byte
+                    params.append(param_id)
+
+            end_byte = ser.read(1)
+            if end_byte == b"\xFF":  # Ensure proper packet termination
+                data = {
+                    "main_var_id": ord(main_var_id),
+                    "value": value,
+                    "params": [
+                        ord(param) for param in params
+                    ],  # Will be an empty list if no params
+                }
+                print(data)
+            else:
+                print("Error: End byte not found. Invalid packet.")
+        else:
+            print("Error: Start byte not found. Invalid packet.")
+
+
+# Connect to serial port
+# ser = serial.Serial('/dev/ttyUSB0', 9600)
+# Connect to serial port
+ser = serial.Serial("/dev/tty.usbserial-1450", 115200)
+
+while True:
+    read_serial_data(ser)