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88 lines
2.8 KiB
Python
88 lines
2.8 KiB
Python
#!/usr/bin/env python
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#
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# Demonstrates the use of otatool.py, a tool for performing ota partition level
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# operations.
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#
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# Copyright 2018 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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import argparse
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import os
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import re
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import subprocess
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import sys
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from subprocess import CalledProcessError
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import serial
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def get_running_partition(port=None):
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# Monitor the serial output of target device. The firmware outputs the currently
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# running partition
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IDF_PATH = os.path.expandvars('$IDF_PATH')
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sys.path.append(os.path.join(IDF_PATH, 'components', 'esptool_py', 'esptool'))
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import esptool
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ESPTOOL_PY = os.path.join(IDF_PATH, 'components', 'esptool_py', 'esptool', 'esptool.py')
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baud = os.environ.get('ESPTOOL_BAUD', esptool.ESPLoader.ESP_ROM_BAUD)
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if not port:
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error_message = 'Unable to obtain default target device port.\nSerial log:\n\n'
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try:
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# Check what esptool.py finds on what port the device is connected to
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output = subprocess.check_output([sys.executable, ESPTOOL_PY, 'chip_id']) # may raise CalledProcessError
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pattern = r'Serial port ([\S]+)'
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pattern = re.compile(pattern.encode())
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port = re.search(pattern, output).group(1) # may raise AttributeError
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except CalledProcessError as e:
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raise Exception(error_message + e.output)
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except AttributeError:
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raise Exception(error_message + output)
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serial_instance = serial.serial_for_url(port.decode('utf-8'), baud, do_not_open=True)
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serial_instance.dtr = False
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serial_instance.rts = False
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serial_instance.rts = True
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serial_instance.open()
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serial_instance.rts = False
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# Read until example end and find the currently running partition string
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content = serial_instance.read_until(b'Example end')
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pattern = re.compile(b'Running partition: ([a-z0-9_]+)')
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running = re.search(pattern, content).group(1)
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return running.decode('utf-8')
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument('--port', default=None)
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args = parser.parse_args()
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try:
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res = get_running_partition(args.port)
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except Exception as e:
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print(e.message)
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sys.exit(1)
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print(res)
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if __name__ == '__main__':
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main()
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