250 lines
8.4 KiB
Python
250 lines
8.4 KiB
Python
# Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http:#www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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""" DUT for IDF applications """
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import os
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import os.path
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import sys
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import re
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import functools
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import tempfile
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from serial.tools import list_ports
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from collections import namedtuple
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import DUT
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try:
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import esptool
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except ImportError: # cheat and use IDF's copy of esptool if available
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idf_path = os.getenv("IDF_PATH")
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if not idf_path or not os.path.exists(idf_path):
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raise
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sys.path.insert(0, os.path.join(idf_path, "components", "esptool_py", "esptool"))
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import esptool
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class IDFToolError(OSError):
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pass
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def _uses_esptool(func):
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""" Suspend listener thread, connect with esptool,
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call target function with esptool instance,
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then resume listening for output
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"""
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@functools.wraps(func)
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def handler(self, *args, **kwargs):
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self.stop_receive()
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settings = self.port_inst.get_settings()
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rom = esptool.ESP32ROM(self.port_inst)
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rom.connect('hard_reset')
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esp = rom.run_stub()
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ret = func(self, esp, *args, **kwargs)
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self.port_inst.apply_settings(settings)
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self.start_receive()
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return ret
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return handler
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class IDFDUT(DUT.SerialDUT):
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""" IDF DUT, extends serial with esptool methods
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(Becomes aware of IDFApp instance which holds app-specific data)
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"""
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# /dev/ttyAMA0 port is listed in Raspberry Pi
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# /dev/tty.Bluetooth-Incoming-Port port is listed in Mac
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INVALID_PORT_PATTERN = re.compile(r"AMA|Bluetooth")
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# if need to erase NVS partition in start app
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ERASE_NVS = True
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def __init__(self, name, port, log_file, app, **kwargs):
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super(IDFDUT, self).__init__(name, port, log_file, app, **kwargs)
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@classmethod
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def get_mac(cls, app, port):
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"""
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get MAC address via esptool
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:param app: application instance (to get tool)
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:param port: serial port as string
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:return: MAC address or None
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"""
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try:
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esp = esptool.ESP32ROM(port)
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esp.connect()
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return esp.read_mac()
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except RuntimeError:
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return None
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finally:
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esp._port.close()
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@classmethod
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def confirm_dut(cls, port, app, **kwargs):
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return cls.get_mac(app, port) is not None
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@_uses_esptool
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def _try_flash(self, esp, erase_nvs, baud_rate):
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"""
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Called by start_app() to try flashing at a particular baud rate.
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Structured this way so @_uses_esptool will reconnect each time
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"""
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try:
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# note: opening here prevents us from having to seek back to 0 each time
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flash_files = [(offs, open(path, "rb")) for (offs, path) in self.app.flash_files]
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if erase_nvs:
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address = self.app.partition_table["nvs"]["offset"]
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size = self.app.partition_table["nvs"]["size"]
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nvs_file = tempfile.TemporaryFile()
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nvs_file.write(b'\xff' * size)
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nvs_file.seek(0)
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flash_files.append((int(address, 0), nvs_file))
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# fake flasher args object, this is a hack until
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# esptool Python API is improved
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Flash_Args = namedtuple('write_flash_args',
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['flash_size',
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'flash_mode',
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'flash_freq',
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'addr_filename',
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'no_stub',
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'compress',
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'verify',
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'encrypt'])
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flash_args = Flash_Args(
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self.app.flash_settings["flash_size"],
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self.app.flash_settings["flash_mode"],
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self.app.flash_settings["flash_freq"],
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flash_files,
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False,
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True,
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False,
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False
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)
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esp.change_baud(baud_rate)
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esptool.write_flash(esp, flash_args)
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finally:
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for (_,f) in flash_files:
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f.close()
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def start_app(self, erase_nvs=ERASE_NVS):
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"""
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download and start app.
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:param: erase_nvs: whether erase NVS partition during flash
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:return: None
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"""
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for baud_rate in [921600, 115200]:
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try:
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self._try_flash(erase_nvs, baud_rate)
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break
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except RuntimeError:
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continue
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else:
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raise IDFToolError()
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@_uses_esptool
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def reset(self, esp):
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"""
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hard reset DUT
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:return: None
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"""
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esp.hard_reset()
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@_uses_esptool
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def erase_partition(self, esp, partition):
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"""
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:param partition: partition name to erase
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:return: None
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"""
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raise NotImplementedError() # TODO: implement this
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# address = self.app.partition_table[partition]["offset"]
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size = self.app.partition_table[partition]["size"]
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# TODO can use esp.erase_region() instead of this, I think
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with open(".erase_partition.tmp", "wb") as f:
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f.write(chr(0xFF) * size)
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@_uses_esptool
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def dump_flush(self, esp, output_file, **kwargs):
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"""
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dump flush
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:param output_file: output file name, if relative path, will use sdk path as base path.
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:keyword partition: partition name, dump the partition.
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``partition`` is preferred than using ``address`` and ``size``.
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:keyword address: dump from address (need to be used with size)
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:keyword size: dump size (need to be used with address)
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:return: None
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"""
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if os.path.isabs(output_file) is False:
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output_file = os.path.relpath(output_file, self.app.get_log_folder())
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if "partition" in kwargs:
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partition = self.app.partition_table[kwargs["partition"]]
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_address = partition["offset"]
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_size = partition["size"]
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elif "address" in kwargs and "size" in kwargs:
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_address = kwargs["address"]
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_size = kwargs["size"]
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else:
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raise IDFToolError("You must specify 'partition' or ('address' and 'size') to dump flash")
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content = esp.read_flash(_address, _size)
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with open(output_file, "wb") as f:
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f.write(content)
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@classmethod
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def list_available_ports(cls):
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ports = [x.device for x in list_ports.comports()]
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espport = os.getenv('ESPPORT')
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if not espport:
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# It's a little hard filter out invalid port with `serial.tools.list_ports.grep()`:
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# The check condition in `grep` is: `if r.search(port) or r.search(desc) or r.search(hwid)`.
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# This means we need to make all 3 conditions fail, to filter out the port.
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# So some part of the filters will not be straight forward to users.
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# And negative regular expression (`^((?!aa|bb|cc).)*$`) is not easy to understand.
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# Filter out invalid port by our own will be much simpler.
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return [x for x in ports if not cls.INVALID_PORT_PATTERN.search(x)]
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# On MacOs with python3.6: type of espport is already utf8
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if isinstance(espport, type(u'')):
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port_hint = espport
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else:
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port_hint = espport.decode('utf8')
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# If $ESPPORT is a valid port, make it appear first in the list
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if port_hint in ports:
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ports.remove(port_hint)
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return [port_hint] + ports
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# On macOS, user may set ESPPORT to /dev/tty.xxx while
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# pySerial lists only the corresponding /dev/cu.xxx port
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if sys.platform == 'darwin' and 'tty.' in port_hint:
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port_hint = port_hint.replace('tty.', 'cu.')
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if port_hint in ports:
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ports.remove(port_hint)
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return [port_hint] + ports
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return ports
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