766 lines
25 KiB
Python
Executable File
766 lines
25 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# This file is part of the MicroPython project, http://micropython.org/
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#
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# The MIT License (MIT)
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#
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# Copyright (c) 2014-2021 Damien P. George
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# Copyright (c) 2017 Paul Sokolovsky
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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"""
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pyboard interface
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This module provides the Pyboard class, used to communicate with and
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control a MicroPython device over a communication channel. Both real
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boards and emulated devices (e.g. running in QEMU) are supported.
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Various communication channels are supported, including a serial
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connection, telnet-style network connection, external process
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connection.
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Example usage:
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import pyboard
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pyb = pyboard.Pyboard('/dev/ttyACM0')
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Or:
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pyb = pyboard.Pyboard('192.168.1.1')
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Then:
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pyb.enter_raw_repl()
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pyb.exec('import pyb')
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pyb.exec('pyb.LED(1).on()')
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pyb.exit_raw_repl()
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Note: if using Python2 then pyb.exec must be written as pyb.exec_.
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To run a script from the local machine on the board and print out the results:
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import pyboard
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pyboard.execfile('test.py', device='/dev/ttyACM0')
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This script can also be run directly. To execute a local script, use:
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./pyboard.py test.py
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Or:
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python pyboard.py test.py
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"""
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import sys
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import time
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import os
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import ast
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try:
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stdout = sys.stdout.buffer
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except AttributeError:
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# Python2 doesn't have buffer attr
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stdout = sys.stdout
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def stdout_write_bytes(b):
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b = b.replace(b"\x04", b"")
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stdout.write(b)
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stdout.flush()
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class PyboardError(Exception):
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pass
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class TelnetToSerial:
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def __init__(self, ip, user, password, read_timeout=None):
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self.tn = None
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import telnetlib
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self.tn = telnetlib.Telnet(ip, timeout=15)
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self.read_timeout = read_timeout
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if b"Login as:" in self.tn.read_until(b"Login as:", timeout=read_timeout):
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self.tn.write(bytes(user, "ascii") + b"\r\n")
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if b"Password:" in self.tn.read_until(b"Password:", timeout=read_timeout):
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# needed because of internal implementation details of the telnet server
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time.sleep(0.2)
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self.tn.write(bytes(password, "ascii") + b"\r\n")
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if b"for more information." in self.tn.read_until(
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b'Type "help()" for more information.', timeout=read_timeout
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):
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# login successful
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from collections import deque
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self.fifo = deque()
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return
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raise PyboardError("Failed to establish a telnet connection with the board")
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def __del__(self):
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self.close()
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def close(self):
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if self.tn:
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self.tn.close()
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def read(self, size=1):
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while len(self.fifo) < size:
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timeout_count = 0
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data = self.tn.read_eager()
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if len(data):
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self.fifo.extend(data)
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timeout_count = 0
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else:
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time.sleep(0.25)
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if self.read_timeout is not None and timeout_count > 4 * self.read_timeout:
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break
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timeout_count += 1
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data = b""
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while len(data) < size and len(self.fifo) > 0:
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data += bytes([self.fifo.popleft()])
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return data
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def write(self, data):
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self.tn.write(data)
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return len(data)
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def inWaiting(self):
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n_waiting = len(self.fifo)
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if not n_waiting:
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data = self.tn.read_eager()
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self.fifo.extend(data)
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return len(data)
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else:
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return n_waiting
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class ProcessToSerial:
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"Execute a process and emulate serial connection using its stdin/stdout."
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def __init__(self, cmd):
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import subprocess
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self.subp = subprocess.Popen(
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cmd,
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bufsize=0,
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shell=True,
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preexec_fn=os.setsid,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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)
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# Initially was implemented with selectors, but that adds Python3
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# dependency. However, there can be race conditions communicating
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# with a particular child process (like QEMU), and selectors may
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# still work better in that case, so left inplace for now.
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#
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# import selectors
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# self.sel = selectors.DefaultSelector()
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# self.sel.register(self.subp.stdout, selectors.EVENT_READ)
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import select
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self.poll = select.poll()
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self.poll.register(self.subp.stdout.fileno())
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def close(self):
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import signal
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os.killpg(os.getpgid(self.subp.pid), signal.SIGTERM)
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def read(self, size=1):
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data = b""
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while len(data) < size:
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data += self.subp.stdout.read(size - len(data))
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return data
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def write(self, data):
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self.subp.stdin.write(data)
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return len(data)
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def inWaiting(self):
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# res = self.sel.select(0)
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res = self.poll.poll(0)
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if res:
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return 1
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return 0
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class ProcessPtyToTerminal:
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"""Execute a process which creates a PTY and prints slave PTY as
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first line of its output, and emulate serial connection using
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this PTY."""
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def __init__(self, cmd):
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import subprocess
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import re
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import serial
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self.subp = subprocess.Popen(
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cmd.split(),
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bufsize=0,
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shell=False,
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preexec_fn=os.setsid,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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)
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pty_line = self.subp.stderr.readline().decode("utf-8")
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m = re.search(r"/dev/pts/[0-9]+", pty_line)
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if not m:
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print("Error: unable to find PTY device in startup line:", pty_line)
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self.close()
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sys.exit(1)
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pty = m.group()
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# rtscts, dsrdtr params are to workaround pyserial bug:
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# http://stackoverflow.com/questions/34831131/pyserial-does-not-play-well-with-virtual-port
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self.ser = serial.Serial(pty, interCharTimeout=1, rtscts=True, dsrdtr=True)
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def close(self):
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import signal
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os.killpg(os.getpgid(self.subp.pid), signal.SIGTERM)
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def read(self, size=1):
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return self.ser.read(size)
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def write(self, data):
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return self.ser.write(data)
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def inWaiting(self):
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return self.ser.inWaiting()
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class Pyboard:
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def __init__(
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self, device, baudrate=115200, user="micro", password="python", wait=0, exclusive=True
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):
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self.in_raw_repl = False
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self.use_raw_paste = True
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if device.startswith("exec:"):
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self.serial = ProcessToSerial(device[len("exec:") :])
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elif device.startswith("execpty:"):
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self.serial = ProcessPtyToTerminal(device[len("qemupty:") :])
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elif device and device[0].isdigit() and device[-1].isdigit() and device.count(".") == 3:
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# device looks like an IP address
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self.serial = TelnetToSerial(device, user, password, read_timeout=10)
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else:
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import serial
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# Set options, and exclusive if pyserial supports it
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serial_kwargs = {"baudrate": baudrate, "interCharTimeout": 1}
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if serial.__version__ >= "3.3":
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serial_kwargs["exclusive"] = exclusive
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delayed = False
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for attempt in range(wait + 1):
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try:
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self.serial = serial.Serial(device, **serial_kwargs)
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break
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except (OSError, IOError): # Py2 and Py3 have different errors
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if wait == 0:
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continue
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if attempt == 0:
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sys.stdout.write("Waiting {} seconds for pyboard ".format(wait))
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delayed = True
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time.sleep(1)
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sys.stdout.write(".")
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sys.stdout.flush()
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else:
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if delayed:
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print("")
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raise PyboardError("failed to access " + device)
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if delayed:
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print("")
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def close(self):
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self.serial.close()
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def read_until(self, min_num_bytes, ending, timeout=10, data_consumer=None):
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# if data_consumer is used then data is not accumulated and the ending must be 1 byte long
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assert data_consumer is None or len(ending) == 1
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data = self.serial.read(min_num_bytes)
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if data_consumer:
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data_consumer(data)
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timeout_count = 0
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while True:
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if data.endswith(ending):
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break
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elif self.serial.inWaiting() > 0:
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new_data = self.serial.read(1)
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if data_consumer:
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data_consumer(new_data)
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data = new_data
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else:
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data = data + new_data
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timeout_count = 0
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else:
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timeout_count += 1
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if timeout is not None and timeout_count >= 100 * timeout:
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break
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time.sleep(0.01)
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return data
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def enter_raw_repl(self, soft_reset=True):
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self.serial.write(b"\r\x03\x03") # ctrl-C twice: interrupt any running program
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# flush input (without relying on serial.flushInput())
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n = self.serial.inWaiting()
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while n > 0:
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self.serial.read(n)
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n = self.serial.inWaiting()
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self.serial.write(b"\r\x01") # ctrl-A: enter raw REPL
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if soft_reset:
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data = self.read_until(1, b"raw REPL; CTRL-B to exit\r\n>")
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if not data.endswith(b"raw REPL; CTRL-B to exit\r\n>"):
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print(data)
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raise PyboardError("could not enter raw repl")
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self.serial.write(b"\x04") # ctrl-D: soft reset
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# Waiting for "soft reboot" independently to "raw REPL" (done below)
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# allows boot.py to print, which will show up after "soft reboot"
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# and before "raw REPL".
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data = self.read_until(1, b"soft reboot\r\n")
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if not data.endswith(b"soft reboot\r\n"):
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print(data)
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raise PyboardError("could not enter raw repl")
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data = self.read_until(1, b"raw REPL; CTRL-B to exit\r\n")
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if not data.endswith(b"raw REPL; CTRL-B to exit\r\n"):
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print(data)
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raise PyboardError("could not enter raw repl")
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self.in_raw_repl = True
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def exit_raw_repl(self):
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self.serial.write(b"\r\x02") # ctrl-B: enter friendly REPL
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self.in_raw_repl = False
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def follow(self, timeout, data_consumer=None):
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# wait for normal output
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data = self.read_until(1, b"\x04", timeout=timeout, data_consumer=data_consumer)
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if not data.endswith(b"\x04"):
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raise PyboardError("timeout waiting for first EOF reception")
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data = data[:-1]
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# wait for error output
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data_err = self.read_until(1, b"\x04", timeout=timeout)
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if not data_err.endswith(b"\x04"):
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raise PyboardError("timeout waiting for second EOF reception")
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data_err = data_err[:-1]
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# return normal and error output
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return data, data_err
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def raw_paste_write(self, command_bytes):
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# Read initial header, with window size.
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data = self.serial.read(2)
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window_size = data[0] | data[1] << 8
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window_remain = window_size
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# Write out the command_bytes data.
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i = 0
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while i < len(command_bytes):
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while window_remain == 0 or self.serial.inWaiting():
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data = self.serial.read(1)
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if data == b"\x01":
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# Device indicated that a new window of data can be sent.
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window_remain += window_size
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elif data == b"\x04":
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# Device indicated abrupt end. Acknowledge it and finish.
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self.serial.write(b"\x04")
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return
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else:
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# Unexpected data from device.
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raise PyboardError("unexpected read during raw paste: {}".format(data))
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# Send out as much data as possible that fits within the allowed window.
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b = command_bytes[i : min(i + window_remain, len(command_bytes))]
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self.serial.write(b)
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window_remain -= len(b)
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i += len(b)
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# Indicate end of data.
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self.serial.write(b"\x04")
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# Wait for device to acknowledge end of data.
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data = self.read_until(1, b"\x04")
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if not data.endswith(b"\x04"):
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raise PyboardError("could not complete raw paste: {}".format(data))
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def exec_raw_no_follow(self, command):
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if isinstance(command, bytes):
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command_bytes = command
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else:
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command_bytes = bytes(command, encoding="utf8")
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# check we have a prompt
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data = self.read_until(1, b">")
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if not data.endswith(b">"):
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raise PyboardError("could not enter raw repl")
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if self.use_raw_paste:
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# Try to enter raw-paste mode.
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self.serial.write(b"\x05A\x01")
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data = self.serial.read(2)
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if data == b"R\x00":
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# Device understood raw-paste command but doesn't support it.
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pass
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elif data == b"R\x01":
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# Device supports raw-paste mode, write out the command using this mode.
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return self.raw_paste_write(command_bytes)
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else:
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# Device doesn't support raw-paste, fall back to normal raw REPL.
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data = self.read_until(1, b"w REPL; CTRL-B to exit\r\n>")
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if not data.endswith(b"w REPL; CTRL-B to exit\r\n>"):
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print(data)
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raise PyboardError("could not enter raw repl")
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# Don't try to use raw-paste mode again for this connection.
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self.use_raw_paste = False
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# Write command using standard raw REPL, 256 bytes every 10ms.
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for i in range(0, len(command_bytes), 256):
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self.serial.write(command_bytes[i : min(i + 256, len(command_bytes))])
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time.sleep(0.01)
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self.serial.write(b"\x04")
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# check if we could exec command
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data = self.serial.read(2)
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if data != b"OK":
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raise PyboardError("could not exec command (response: %r)" % data)
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def exec_raw(self, command, timeout=10, data_consumer=None):
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self.exec_raw_no_follow(command)
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return self.follow(timeout, data_consumer)
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def eval(self, expression):
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ret = self.exec_("print({})".format(expression))
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ret = ret.strip()
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return ret
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def exec_(self, command, data_consumer=None):
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ret, ret_err = self.exec_raw(command, data_consumer=data_consumer)
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if ret_err:
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raise PyboardError("exception", ret, ret_err)
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return ret
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def execfile(self, filename):
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with open(filename, "rb") as f:
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pyfile = f.read()
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return self.exec_(pyfile)
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def get_time(self):
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t = str(self.eval("pyb.RTC().datetime()"), encoding="utf8")[1:-1].split(", ")
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return int(t[4]) * 3600 + int(t[5]) * 60 + int(t[6])
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def fs_ls(self, src):
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cmd = (
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"import uos\nfor f in uos.ilistdir(%s):\n"
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" print('{:12} {}{}'.format(f[3]if len(f)>3 else 0,f[0],'/'if f[1]&0x4000 else ''))"
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% (("'%s'" % src) if src else "")
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)
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self.exec_(cmd, data_consumer=stdout_write_bytes)
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def fs_cat(self, src, chunk_size=256):
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cmd = (
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"with open('%s') as f:\n while 1:\n"
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" b=f.read(%u)\n if not b:break\n print(b,end='')" % (src, chunk_size)
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)
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self.exec_(cmd, data_consumer=stdout_write_bytes)
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def fs_get(self, src, dest, chunk_size=256):
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self.exec_("f=open('%s','rb')\nr=f.read" % src)
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with open(dest, "wb") as f:
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while True:
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data = bytearray()
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self.exec_("print(r(%u))" % chunk_size, data_consumer=lambda d: data.extend(d))
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assert data.endswith(b"\r\n\x04")
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try:
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data = ast.literal_eval(str(data[:-3], "ascii"))
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if not isinstance(data, bytes):
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raise ValueError("Not bytes")
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except (UnicodeError, ValueError) as e:
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raise PyboardError("fs_get: Could not interpret received data: %s" % str(e))
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if not data:
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break
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f.write(data)
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self.exec_("f.close()")
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|
|
def fs_put(self, src, dest, chunk_size=256):
|
|
self.exec_("f=open('%s','wb')\nw=f.write" % dest)
|
|
with open(src, "rb") as f:
|
|
while True:
|
|
data = f.read(chunk_size)
|
|
if not data:
|
|
break
|
|
if sys.version_info < (3,):
|
|
self.exec_("w(b" + repr(data) + ")")
|
|
else:
|
|
self.exec_("w(" + repr(data) + ")")
|
|
self.exec_("f.close()")
|
|
|
|
def fs_mkdir(self, dir):
|
|
self.exec_("import uos\nuos.mkdir('%s')" % dir)
|
|
|
|
def fs_rmdir(self, dir):
|
|
self.exec_("import uos\nuos.rmdir('%s')" % dir)
|
|
|
|
def fs_rm(self, src):
|
|
self.exec_("import uos\nuos.remove('%s')" % src)
|
|
|
|
|
|
# in Python2 exec is a keyword so one must use "exec_"
|
|
# but for Python3 we want to provide the nicer version "exec"
|
|
setattr(Pyboard, "exec", Pyboard.exec_)
|
|
|
|
|
|
def execfile(filename, device="/dev/ttyACM0", baudrate=115200, user="micro", password="python"):
|
|
pyb = Pyboard(device, baudrate, user, password)
|
|
pyb.enter_raw_repl()
|
|
output = pyb.execfile(filename)
|
|
stdout_write_bytes(output)
|
|
pyb.exit_raw_repl()
|
|
pyb.close()
|
|
|
|
|
|
def filesystem_command(pyb, args):
|
|
def fname_remote(src):
|
|
if src.startswith(":"):
|
|
src = src[1:]
|
|
return src
|
|
|
|
def fname_cp_dest(src, dest):
|
|
src = src.rsplit("/", 1)[-1]
|
|
if dest is None or dest == "":
|
|
dest = src
|
|
elif dest == ".":
|
|
dest = "./" + src
|
|
elif dest.endswith("/"):
|
|
dest += src
|
|
return dest
|
|
|
|
cmd = args[0]
|
|
args = args[1:]
|
|
try:
|
|
if cmd == "cp":
|
|
srcs = args[:-1]
|
|
dest = args[-1]
|
|
if srcs[0].startswith("./") or dest.startswith(":"):
|
|
op = pyb.fs_put
|
|
fmt = "cp %s :%s"
|
|
dest = fname_remote(dest)
|
|
else:
|
|
op = pyb.fs_get
|
|
fmt = "cp :%s %s"
|
|
for src in srcs:
|
|
src = fname_remote(src)
|
|
dest2 = fname_cp_dest(src, dest)
|
|
print(fmt % (src, dest2))
|
|
op(src, dest2)
|
|
else:
|
|
op = {
|
|
"ls": pyb.fs_ls,
|
|
"cat": pyb.fs_cat,
|
|
"mkdir": pyb.fs_mkdir,
|
|
"rmdir": pyb.fs_rmdir,
|
|
"rm": pyb.fs_rm,
|
|
}[cmd]
|
|
if cmd == "ls" and not args:
|
|
args = [""]
|
|
for src in args:
|
|
src = fname_remote(src)
|
|
print("%s :%s" % (cmd, src))
|
|
op(src)
|
|
except PyboardError as er:
|
|
print(str(er.args[2], "ascii"))
|
|
pyb.exit_raw_repl()
|
|
pyb.close()
|
|
sys.exit(1)
|
|
|
|
|
|
_injected_import_hook_code = """\
|
|
import uos, uio
|
|
class _FS:
|
|
class File(uio.IOBase):
|
|
def __init__(self):
|
|
self.off = 0
|
|
def ioctl(self, request, arg):
|
|
return 0
|
|
def readinto(self, buf):
|
|
buf[:] = memoryview(_injected_buf)[self.off:self.off + len(buf)]
|
|
self.off += len(buf)
|
|
return len(buf)
|
|
mount = umount = chdir = lambda *args: None
|
|
def stat(self, path):
|
|
if path == '_injected.mpy':
|
|
return tuple(0 for _ in range(10))
|
|
else:
|
|
raise OSError(-2) # ENOENT
|
|
def open(self, path, mode):
|
|
return self.File()
|
|
uos.mount(_FS(), '/_')
|
|
uos.chdir('/_')
|
|
from _injected import *
|
|
uos.umount('/_')
|
|
del _injected_buf, _FS
|
|
"""
|
|
|
|
|
|
def main():
|
|
import argparse
|
|
|
|
cmd_parser = argparse.ArgumentParser(description="Run scripts on the pyboard.")
|
|
cmd_parser.add_argument(
|
|
"-d",
|
|
"--device",
|
|
default=os.environ.get("PYBOARD_DEVICE", "/dev/ttyACM0"),
|
|
help="the serial device or the IP address of the pyboard",
|
|
)
|
|
cmd_parser.add_argument(
|
|
"-b",
|
|
"--baudrate",
|
|
default=os.environ.get("PYBOARD_BAUDRATE", "115200"),
|
|
help="the baud rate of the serial device",
|
|
)
|
|
cmd_parser.add_argument("-u", "--user", default="micro", help="the telnet login username")
|
|
cmd_parser.add_argument("-p", "--password", default="python", help="the telnet login password")
|
|
cmd_parser.add_argument("-c", "--command", help="program passed in as string")
|
|
cmd_parser.add_argument(
|
|
"-w",
|
|
"--wait",
|
|
default=0,
|
|
type=int,
|
|
help="seconds to wait for USB connected board to become available",
|
|
)
|
|
group = cmd_parser.add_mutually_exclusive_group()
|
|
group.add_argument(
|
|
"--follow",
|
|
action="store_true",
|
|
help="follow the output after running the scripts [default if no scripts given]",
|
|
)
|
|
group.add_argument(
|
|
"--no-follow",
|
|
action="store_true",
|
|
help="Do not follow the output after running the scripts.",
|
|
)
|
|
group.add_argument(
|
|
"--no-exclusive",
|
|
action="store_true",
|
|
help="Do not try to open the serial device for exclusive access.",
|
|
)
|
|
cmd_parser.add_argument(
|
|
"-f",
|
|
"--filesystem",
|
|
action="store_true",
|
|
help="perform a filesystem action: "
|
|
"cp local :device | cp :device local | cat path | ls [path] | rm path | mkdir path | rmdir path",
|
|
)
|
|
cmd_parser.add_argument("files", nargs="*", help="input files")
|
|
args = cmd_parser.parse_args()
|
|
|
|
# open the connection to the pyboard
|
|
try:
|
|
pyb = Pyboard(
|
|
args.device, args.baudrate, args.user, args.password, args.wait, not args.no_exclusive
|
|
)
|
|
except PyboardError as er:
|
|
print(er)
|
|
sys.exit(1)
|
|
|
|
# run any command or file(s)
|
|
if args.command is not None or args.filesystem or len(args.files):
|
|
# we must enter raw-REPL mode to execute commands
|
|
# this will do a soft-reset of the board
|
|
try:
|
|
pyb.enter_raw_repl()
|
|
except PyboardError as er:
|
|
print(er)
|
|
pyb.close()
|
|
sys.exit(1)
|
|
|
|
def execbuffer(buf):
|
|
try:
|
|
if args.no_follow:
|
|
pyb.exec_raw_no_follow(buf)
|
|
ret_err = None
|
|
else:
|
|
ret, ret_err = pyb.exec_raw(
|
|
buf, timeout=None, data_consumer=stdout_write_bytes
|
|
)
|
|
except PyboardError as er:
|
|
print(er)
|
|
pyb.close()
|
|
sys.exit(1)
|
|
except KeyboardInterrupt:
|
|
sys.exit(1)
|
|
if ret_err:
|
|
pyb.exit_raw_repl()
|
|
pyb.close()
|
|
stdout_write_bytes(ret_err)
|
|
sys.exit(1)
|
|
|
|
# do filesystem commands, if given
|
|
if args.filesystem:
|
|
filesystem_command(pyb, args.files)
|
|
del args.files[:]
|
|
|
|
# run the command, if given
|
|
if args.command is not None:
|
|
execbuffer(args.command.encode("utf-8"))
|
|
|
|
# run any files
|
|
for filename in args.files:
|
|
with open(filename, "rb") as f:
|
|
pyfile = f.read()
|
|
if filename.endswith(".mpy") and pyfile[0] == ord("M"):
|
|
pyb.exec_("_injected_buf=" + repr(pyfile))
|
|
pyfile = _injected_import_hook_code
|
|
execbuffer(pyfile)
|
|
|
|
# exiting raw-REPL just drops to friendly-REPL mode
|
|
pyb.exit_raw_repl()
|
|
|
|
# if asked explicitly, or no files given, then follow the output
|
|
if args.follow or (args.command is None and not args.filesystem and len(args.files) == 0):
|
|
try:
|
|
ret, ret_err = pyb.follow(timeout=None, data_consumer=stdout_write_bytes)
|
|
except PyboardError as er:
|
|
print(er)
|
|
sys.exit(1)
|
|
except KeyboardInterrupt:
|
|
sys.exit(1)
|
|
if ret_err:
|
|
pyb.close()
|
|
stdout_write_bytes(ret_err)
|
|
sys.exit(1)
|
|
|
|
# close the connection to the pyboard
|
|
pyb.close()
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|