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#!/usr/bin/env python
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# This script requires Python 3.
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# $ pip install pyserial
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# $ python gm30ctl.py
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import io
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import struct
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import argparse
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import typing as t
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from pathlib import Path
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import serial
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def send_ack(port):
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port.write(bytes([0x06]))
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port.flush()
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def receive_ack(port):
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response = port.read(1)
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assert response == bytes([0x06])
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def read_memory(port, address: int, size: int) -> bytes:
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# Request: 0x52 ADDRx2 0x00 SIZEx1
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request = bytearray([0x52, 0x00, 0x00, 0x00, 0x00])
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struct.pack_into('<HxB', request, 1, address, size)
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port.write(request)
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port.flush()
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# Response: 0x57 ADDRx2 0x00 SIZEx1 [DATAx1 .. DATAx1]
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expected_response_size = 5 + size
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response = port.read(expected_response_size)
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assert len(response) == expected_response_size
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assert response[0] == 0x57
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assert response[1:5] == request[1:5]
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send_ack(port)
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receive_ack(port)
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return response[5:]
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def read_memory_bytes(port, addresses: t.List[int]) -> bytes:
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buffer = io.BytesIO()
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for address in addresses:
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buffer.write(read_memory(port, address, 0x01))
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buffer.seek(0)
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return buffer.read()
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def read_memory_range(port, address: int, size: int, chunk_size: int = 0x40) -> bytes:
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buffer = io.BytesIO()
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read_address = address
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read_bytes_remaining = size
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while read_bytes_remaining > 0:
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read_size = min(chunk_size, read_bytes_remaining)
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buffer.write(read_memory(port, read_address, read_size))
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read_bytes_remaining -= read_size
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read_address += read_size
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buffer.seek(0)
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return buffer.read()
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def read(device_path: Path):
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with serial.Serial(
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port=str(device_path),
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baudrate=57600,
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bytesize=serial.EIGHTBITS,
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parity=serial.PARITY_NONE,
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stopbits=serial.STOPBITS_ONE,
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xonxoff=False,
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rtscts=True,
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dsrdtr=True
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) as port:
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# PSEARCH
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port.write(b'PSEARCH')
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port.flush()
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receive_ack(port)
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response = port.read(7)
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assert response.decode() == 'P13GMRS'
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# XXX
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port.write(b'PASSSTA')
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port.flush()
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response = port.read(3)
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assert response[:1].decode() == 'P'
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assert response[1] == 0x00
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assert response[2] == 0x00
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# XXX
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port.write(b'SYSINFO')
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port.flush()
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receive_ack(port)
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# XXX
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port.write(bytes([0x56, 0x00, 0x00, 0x0A, 0x0D]))
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port.flush()
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response = port.read(3)
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assert response == bytes([0x56, 0x0D, 0x0A])
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response = port.read(10)
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print(' '.join([f"0x{b:x}" for b in response]))
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# assert response == bytes([
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# 0x0A,
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# 0x0D,
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# 0x00,
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# 0x00,
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# 0x00,
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# 0x11,
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# 0xCA,
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# 0x00,
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# 0x08,
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# 0x01])
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send_ack(port)
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receive_ack(port)
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# XXX
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port.write(bytes([0x56, 0x00, 0x10, 0x0A, 0x0D]))
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port.flush()
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response = port.read(3)
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assert response == bytes([0x56, 0x0D, 0x0A])
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response = port.read(10)
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print(' '.join([f"0x{b:x}" for b in response]))
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# assert response == bytes([
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# 0x0A,
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# 0x0D,
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# 0x00,
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# 0x00,
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# 0x00,
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# 0x11,
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# 0xCA,
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# 0x00,
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# 0x08,
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# 0x01])
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send_ack(port)
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receive_ack(port)
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# XXX
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port.write(bytes([0x56, 0x00, 0x20, 0x0A, 0x0D]))
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port.flush()
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response = port.read(3)
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assert response == bytes([0x56, 0x0D, 0x0A])
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response = port.read(10)
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print(' '.join([f"0x{b:x}" for b in response]))
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# assert response == bytes([
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# 0x0A,
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# 0x0D,
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# 0x00,
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# 0x00,
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# 0x00,
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# 0x11,
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# 0xCA,
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# 0x00,
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# 0x08,
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# 0x01])
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send_ack(port)
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receive_ack(port)
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# XXX
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port.write(bytes([0x56, 0x00, 0x00, 0x00, 0x0A]))
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port.flush()
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response = port.read(3)
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print(' '.join([f"0x{b:x}" for b in response]))
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# assert response == bytes([0x56, 0x0D, 0x0A])
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response = port.read(3)
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print(' '.join([f"0x{b:x}" for b in response]))
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# assert response == bytes([0x56, 0x0A, 0x08])
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response = port.read(5)
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print(' '.join([f"0x{b:x}" for b in response]))
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# assert response == bytes([0x00, 0x10, 0x00, 0x00, 0xFF])
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send_ack(port)
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receive_ack(port)
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# XXX
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port.write(bytes([0xFF, 0xFF, 0xFF, 0xFF, 0x0C]))
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port.flush()
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port.write(b'P13GMRS')
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port.flush()
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receive_ack(port)
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# XXX
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port.write(bytes([0x02]))
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port.flush()
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response = port.read(8)
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assert response == bytes([0xFF] * 8)
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send_ack(port)
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receive_ack(port)
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# XXX
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data = read_memory_bytes(port, [
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0x1FFF,
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0x2FFF,
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0x3FFF,
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0x4FFF,
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0x5FFF,
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0x6FFF,
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0x7FFF,
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0x8FFF,
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0x9FFF,
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0xAFFF,
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0xBFFF,
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0xCFFF,
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0xDFFF,
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0xEFFF,
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0xFFFF])
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with open('region_1FFF.bin', 'wb') as output_file:
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output_file.write(data)
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# XXX (data file 0x2000 offset)
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data = read_memory_range(port, 0x1000, 0xFC0, 0x40)
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with open('region_1000.bin', 'wb') as output_file:
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output_file.write(data)
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# XXX
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data = read_memory_range(port, 0xF000, 0xFC0, 0x40)
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with open('region_F000.bin', 'wb') as output_file:
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output_file.write(data)
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# XXX
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data = read_memory_range(port, 0x3000, 0xFC0, 0x40)
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with open('region_3000.bin', 'wb') as output_file:
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output_file.write(data)
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# XXX
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data = read_memory_range(port, 0xB000, 0xFC0, 0x40)
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with open('region_B000.bin', 'wb') as output_file:
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output_file.write(data)
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# XXX
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data = read_memory_range(port, 0xD000, 0xFC0, 0x40)
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with open('region_D000.bin', 'wb') as output_file:
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output_file.write(data)
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument(
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'-d', '--device',
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type=Path,
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default='/dev/ttyUSB0')
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args = parser.parse_args()
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# XXX
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read(device_path=args.device)
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if __name__ == '__main__':
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main()
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