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esp-idf/tools/idf_monitor.py

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18 KiB
Python
Czysty Wina Historia

#!/usr/bin/env python
#
# esp-idf serial output monitor tool. Does some helpful things:
# - Looks up hex addresses in ELF file with addr2line
# - Reset ESP32 via serial RTS line (Ctrl-T Ctrl-R)
# - Run "make flash" (Ctrl-T Ctrl-F)
# - Run "make app-flash" (Ctrl-T Ctrl-A)
# - If gdbstub output is detected, gdb is automatically loaded
#
# Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Contains elements taken from miniterm "Very simple serial terminal" which
# is part of pySerial. https://github.com/pyserial/pyserial
# (C)2002-2015 Chris Liechti <cliechti@gmx.net>
#
# Originally released under BSD-3-Clause license.
#
from __future__ import print_function, division
import subprocess
import argparse
import codecs
import re
import os
try:
import queue
except ImportError:
import Queue as queue
import time
import sys
import serial
import serial.tools.miniterm as miniterm
import threading
import ctypes
key_description = miniterm.key_description
# Control-key characters
CTRL_A = '\x01'
CTRL_B = '\x02'
CTRL_F = '\x06'
CTRL_H = '\x08'
CTRL_R = '\x12'
CTRL_T = '\x14'
CTRL_RBRACKET = '\x1d' # Ctrl+]
# ANSI terminal codes
ANSI_BLUE = '\033[0;34m'
ANSI_RED = '\033[1;31m'
ANSI_YELLOW = '\033[0;33m'
ANSI_NORMAL = '\033[0m'
__version__ = "1.0"
# Tags for tuples in queues
TAG_KEY = 0
TAG_SERIAL = 1
# regex matches an potential PC value (0x4xxxxxxx)
MATCH_PCADDR = re.compile(r'0x4[0-9a-f]{7}', re.IGNORECASE)
class StoppableThread(object):
"""
Provide a Thread-like class which can be 'cancelled' via a subclass-provided
cancellation method.
Can be started and stopped multiple times.
Isn't an instance of type Thread because Python Thread objects can only be run once
"""
def __init__(self):
self._thread = None
@property
def alive(self):
"""
Is 'alive' whenever the internal thread object exists
"""
return self._thread is not None
def start(self):
if self._thread is None:
self._thread = threading.Thread(target=self._run_outer)
self._thread.start()
def _cancel(self):
pass # override to provide cancellation functionality
def run(self):
pass # override for the main thread behaviour
def _run_outer(self):
try:
self.run()
finally:
self._thread = None
def stop(self):
if self._thread is not None:
old_thread = self._thread
self._thread = None
self._cancel()
old_thread.join()
class ConsoleReader(StoppableThread):
""" Read input keys from the console and push them to the queue,
until stopped.
"""
def __init__(self, console, event_queue):
super(ConsoleReader, self).__init__()
self.console = console
self.event_queue = event_queue
def run(self):
self.console.setup()
try:
while self.alive:
try:
if os.name == 'nt':
# Windows kludge: because the console.cancel() method doesn't
# seem to work to unblock getkey() on the Windows implementation.
#
# So we only call getkey() if we know there's a key waiting for us.
import msvcrt
while not msvcrt.kbhit() and self.alive:
time.sleep(0.1)
if not self.alive:
break
c = self.console.getkey()
except KeyboardInterrupt:
c = '\x03'
if c is not None:
self.event_queue.put((TAG_KEY, c), False)
finally:
self.console.cleanup()
def _cancel(self):
self.console.cancel()
class SerialReader(StoppableThread):
""" Read serial data from the serial port and push to the
event queue, until stopped.
"""
def __init__(self, serial, event_queue):
super(SerialReader, self).__init__()
self.baud = serial.baudrate
self.serial = serial
self.event_queue = event_queue
if not hasattr(self.serial, 'cancel_read'):
# enable timeout for checking alive flag,
# if cancel_read not available
self.serial.timeout = 0.25
def run(self):
if not self.serial.is_open:
self.serial.baudrate = self.baud
self.serial.rts = True # Force an RTS reset on open
self.serial.open()
self.serial.rts = False
try:
while self.alive:
data = self.serial.read(self.serial.in_waiting or 1)
if len(data):
self.event_queue.put((TAG_SERIAL, data), False)
finally:
self.serial.close()
def _cancel(self):
if hasattr(self.serial, 'cancel_read'):
try:
self.serial.cancel_read()
except:
pass
class Monitor(object):
"""
Monitor application main class.
This was originally derived from miniterm.Miniterm, but it turned out to be easier to write from scratch for this
purpose.
Main difference is that all event processing happens in the main thread, not the worker threads.
"""
def __init__(self, serial_instance, elf_file, make="make"):
super(Monitor, self).__init__()
self.event_queue = queue.Queue()
self.console = miniterm.Console()
if os.name == 'nt':
sys.stderr = ANSIColorConverter(sys.stderr)
self.console.output = ANSIColorConverter(self.console.output)
self.console.byte_output = ANSIColorConverter(self.console.byte_output)
self.serial = serial_instance
self.console_reader = ConsoleReader(self.console, self.event_queue)
self.serial_reader = SerialReader(self.serial, self.event_queue)
self.elf_file = elf_file
self.make = make
self.menu_key = CTRL_T
self.exit_key = CTRL_RBRACKET
# internal state
self._pressed_menu_key = False
self._read_line = b""
self._gdb_buffer = b""
def main_loop(self):
self.console_reader.start()
self.serial_reader.start()
try:
while self.console_reader.alive and self.serial_reader.alive:
(event_tag, data) = self.event_queue.get()
if event_tag == TAG_KEY:
self.handle_key(data)
elif event_tag == TAG_SERIAL:
self.handle_serial_input(data)
else:
raise RuntimeError("Bad event data %r" % ((event_tag,data),))
finally:
try:
self.console_reader.stop()
self.serial_reader.stop()
except:
pass
sys.stderr.write(ANSI_NORMAL + "\n")
def handle_key(self, key):
if self._pressed_menu_key:
self.handle_menu_key(key)
self._pressed_menu_key = False
elif key == self.menu_key:
self._pressed_menu_key = True
elif key == self.exit_key:
self.console_reader.stop()
self.serial_reader.stop()
else:
try:
self.serial.write(codecs.encode(key))
except serial.SerialException:
pass # this shouldn't happen, but sometimes port has closed in serial thread
def handle_serial_input(self, data):
# this may need to be made more efficient, as it pushes out a byte
# at a time to the console
for b in data:
self.console.write_bytes(b)
if b == b'\n': # end of line
self.handle_serial_input_line(self._read_line.strip())
self._read_line = b""
else:
self._read_line += b
self.check_gdbstub_trigger(b)
def handle_serial_input_line(self, line):
for m in re.finditer(MATCH_PCADDR, line):
self.lookup_pc_address(m.group())
def handle_menu_key(self, c):
if c == self.exit_key or c == self.menu_key: # send verbatim
self.serial.write(codecs.encode(c))
elif c in [ CTRL_H, 'h', 'H', '?' ]:
sys.stderr.write(self.get_help_text())
elif c == CTRL_R: # Reset device via RTS
self.serial.setRTS(True)
time.sleep(0.2)
self.serial.setRTS(False)
elif c == CTRL_F: # Recompile & upload
self.run_make("flash")
elif c == CTRL_A: # Recompile & upload app only
self.run_make("app-flash")
else:
sys.stderr.write('--- unknown menu character {} --\n'.format(key_description(c)))
def get_help_text(self):
return """
--- idf_monitor ({version}) - ESP-IDF monitor tool
--- based on miniterm from pySerial
---
--- {exit:8} Exit program
--- {menu:8} Menu escape key, followed by:
--- Menu keys:
--- {menu:7} Send the menu character itself to remote
--- {exit:7} Send the exit character itself to remote
--- {reset:7} Reset target board via RTS line
--- {make:7} Run 'make flash' to build & flash
--- {appmake:7} Run 'make app-flash to build & flash app
""".format(version=__version__,
exit=key_description(self.exit_key),
menu=key_description(self.menu_key),
reset=key_description(CTRL_R),
make=key_description(CTRL_F),
appmake=key_description(CTRL_A),
)
def __enter__(self):
""" Use 'with self' to temporarily disable monitoring behaviour """
self.serial_reader.stop()
self.console_reader.stop()
def __exit__(self, *args, **kwargs):
""" Use 'with self' to temporarily disable monitoring behaviour """
self.console_reader.start()
self.serial_reader.start()
def prompt_next_action(self, reason):
self.console.setup() # set up console to trap input characters
try:
sys.stderr.write(ANSI_RED)
sys.stderr.write("--- {}\n".format(reason))
sys.stderr.write("--- Press {} to exit monitor.\n"
.format(key_description(self.exit_key)))
sys.stderr.write("--- Press {} to run 'make flash'.\n"
.format(key_description(CTRL_F)))
sys.stderr.write("--- Press {} to run 'make app-flash'.\n"
.format(key_description(CTRL_A)))
sys.stderr.write("--- Press any other key to resume monitor (resets target).\n")
sys.stderr.write(ANSI_NORMAL)
k = self.console.getkey()
finally:
self.console.cleanup()
if k == self.exit_key:
self.event_queue.put((TAG_KEY, k))
elif k in [ CTRL_F, CTRL_A ]:
self.event_queue.put((TAG_KEY, self.menu_key))
self.event_queue.put((TAG_KEY, k))
def run_make(self, target):
with self:
sys.stderr.write("%s--- Running make %s...\n" % (ANSI_NORMAL, target))
p = subprocess.Popen([self.make,
target ])
try:
p.wait()
except KeyboardInterrupt:
p.wait()
if p.returncode != 0:
self.prompt_next_action("Build failed")
def lookup_pc_address(self, pc_addr):
translation = subprocess.check_output(
["xtensa-esp32-elf-addr2line", "-pfia",
"-e", self.elf_file, pc_addr],
cwd=".")
if not "?? ??:0" in translation:
sys.stderr.write(ANSI_YELLOW + translation + ANSI_NORMAL)
def check_gdbstub_trigger(self, c):
self._gdb_buffer = self._gdb_buffer[-6:] + c # keep the last 7 characters seen
m = re.match(b"\\$(T..)#(..)", self._gdb_buffer) # look for a gdb "reason" for a break
if m is not None:
try:
chsum = sum(ord(p) for p in m.group(1)) & 0xFF
calc_chsum = int(m.group(2), 16)
except ValueError:
return # payload wasn't valid hex digits
if chsum == calc_chsum:
self.run_gdb()
else:
sys.stderr.write("Malformed gdb message... calculated checksum %02x received %02x\n" % (chsum, calc_chsum))
def run_gdb(self):
with self: # disable console control
sys.stderr.write(ANSI_NORMAL)
try:
subprocess.call(["xtensa-esp32-elf-gdb",
"-ex", "set serial baud %d" % self.serial.baudrate,
"-ex", "target remote %s" % self.serial.port,
"-ex", "interrupt", # monitor has already parsed the first 'reason' command, need a second
self.elf_file], cwd=".")
except KeyboardInterrupt:
pass # happens on Windows, maybe other OSes
self.prompt_next_action("gdb exited")
def main():
parser = argparse.ArgumentParser("idf_monitor - a serial output monitor for esp-idf")
parser.add_argument(
'--port', '-p',
help='Serial port device',
default=os.environ.get('ESPTOOL_PORT', '/dev/ttyUSB0')
)
parser.add_argument(
'--baud', '-b',
help='Serial port baud rate',
type=int,
default=os.environ.get('MONITOR_BAUD', 115200))
parser.add_argument(
'--make', '-m',
help='Command to run make',
type=str, default='make')
parser.add_argument(
'elf_file', help='ELF file of application',
type=argparse.FileType('r'))
args = parser.parse_args()
serial_instance = serial.serial_for_url(args.port, args.baud,
do_not_open=True)
serial_instance.dtr = False
serial_instance.rts = False
args.elf_file.close() # don't need this as a file
# remove the parallel jobserver arguments from MAKEFLAGS, as any
# parent make is only running 1 job (monitor), so we can re-spawn
# all of the child makes we need (the -j argument remains part of
# MAKEFLAGS)
try:
makeflags = os.environ["MAKEFLAGS"]
makeflags = re.sub(r"--jobserver[^ =]*=[0-9,]+ ?", "", makeflags)
os.environ["MAKEFLAGS"] = makeflags
except KeyError:
pass # not running a make jobserver
monitor = Monitor(serial_instance, args.elf_file.name, args.make)
sys.stderr.write('--- idf_monitor on {p.name} {p.baudrate} ---\n'.format(
p=serial_instance))
sys.stderr.write('--- Quit: {} | Menu: {} | Help: {} followed by {} ---\n'.format(
key_description(monitor.exit_key),
key_description(monitor.menu_key),
key_description(monitor.menu_key),
key_description(CTRL_H)))
monitor.main_loop()
if os.name == 'nt':
# Windows console stuff
STD_OUTPUT_HANDLE = -11
STD_ERROR_HANDLE = -12
# wincon.h values
FOREGROUND_INTENSITY = 8
FOREGROUND_GREY = 7
# matches the ANSI color change sequences that IDF sends
RE_ANSI_COLOR = re.compile(b'\033\\[([01]);3([0-7])m')
# list mapping the 8 ANSI colors (the indexes) to Windows Console colors
ANSI_TO_WINDOWS_COLOR = [ 0, 4, 2, 6, 1, 5, 3, 7 ]
GetStdHandle = ctypes.windll.kernel32.GetStdHandle
SetConsoleTextAttribute = ctypes.windll.kernel32.SetConsoleTextAttribute
class ANSIColorConverter(object):
"""Class to wrap a file-like output stream, intercept ANSI color codes,
and convert them into calls to Windows SetConsoleTextAttribute.
Doesn't support all ANSI terminal code escape sequences, only the sequences IDF uses.
Ironically, in Windows this console output is normally wrapped by winpty which will then detect the console text
color changes and convert these back to ANSI color codes for MSYS' terminal to display. However this is the
least-bad working solution, as winpty doesn't support any "passthrough" mode for raw output.
"""
def __init__(self, output):
self.output = output
self.handle = GetStdHandle(STD_ERROR_HANDLE if self.output == sys.stderr else STD_OUTPUT_HANDLE)
self.matched = b''
def write(self, data):
for b in data:
l = len(self.matched)
if b == '\033': # ESC
self.matched = b
elif (l == 1 and b == '[') or (1 < l < 7):
self.matched += b
if self.matched == ANSI_NORMAL: # reset console
SetConsoleTextAttribute(self.handle, FOREGROUND_GREY)
self.matched = b''
elif len(self.matched) == 7: # could be an ANSI sequence
m = re.match(RE_ANSI_COLOR, self.matched)
if m is not None:
color = ANSI_TO_WINDOWS_COLOR[int(m.group(2))]
if m.group(1) == b'1':
color |= FOREGROUND_INTENSITY
SetConsoleTextAttribute(self.handle, color)
else:
self.output.write(self.matched) # not an ANSI color code, display verbatim
self.matched = b''
else:
self.output.write(b)
self.matched = b''
def flush(self):
self.output.flush()
if __name__ == "__main__":
main()
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