esp-idf/examples/system/ota/otatool/otatool_example.py

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Python
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#!/usr/bin/env python
#
# Demonstrates the use of otatool.py, a tool for performing ota partition level
# operations.
#
# Copyright 2018 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.
import os
import sys
import argparse
from get_running_partition import get_running_partition
def assert_file_same(file1, file2, err):
with open(file1, "rb") as f1:
with open(file2, "rb") as f2:
f1 = f1.read()
f2 = f2.read()
if len(f1) < len(f2):
f2 = f2[:len(f1)]
else:
f1 = f1[:len(f2)]
if not f1 == f2:
raise Exception(err)
def assert_running_partition(expected, port=None):
running = get_running_partition(port)
if running != expected:
raise Exception("Running partition %s does not match expected %s" % (running, expected))
def main():
COMPONENTS_PATH = os.path.expandvars(os.path.join("$IDF_PATH", "components"))
OTATOOL_DIR = os.path.join(COMPONENTS_PATH, "app_update")
sys.path.append(OTATOOL_DIR)
from otatool import OtatoolTarget
parser = argparse.ArgumentParser("ESP-IDF OTA Tool Example")
parser.add_argument("--port", "-p", help="port where the device to perform operations on is connected")
parser.add_argument("--binary", "-b", help="path to built example binary", default=os.path.join("build", "otatool.bin"))
args = parser.parse_args()
target = OtatoolTarget(args.port)
print("Writing factory firmware to ota_0")
target.write_ota_partition(0, args.binary)
print("Writing factory firmware to ota_1")
target.write_ota_partition("ota_1", args.binary)
# Verify that the contents of the two ota slots are the same as that of the factory partition
print("Checking written firmware to ota_0 and ota_1 match factory firmware")
target.read_ota_partition("ota_0", "app0.bin")
target.read_ota_partition(1, "app1.bin")
assert_file_same("app0.bin", args.binary, "Slot 0 app does not match factory app")
assert_file_same("app1.bin", args.binary, "Slot 1 app does not match factory app")
# Switch to factory app
print("Switching to factory app")
target.erase_otadata()
assert_running_partition("factory")
# Switch to slot 0
print("Switching to OTA slot 0")
target.switch_ota_partition(0)
assert_running_partition("ota_0")
# Switch to slot 1 twice in a row
print("Switching to OTA slot 1 (twice in a row)")
target.switch_ota_partition(1)
assert_running_partition("ota_1")
target.switch_ota_partition("ota_1")
assert_running_partition("ota_1")
# Switch to slot 0 twice in a row
print("Switching to OTA slot 0 (twice in a row)")
target.switch_ota_partition(0)
assert_running_partition("ota_0")
target.switch_ota_partition("ota_0")
assert_running_partition("ota_0")
# Switch to factory app
print("Switching to factory app")
target.erase_otadata()
assert_running_partition("factory")
# Switch to slot 1
print("Switching to OTA slot 1")
target.switch_ota_partition(1)
assert_running_partition("ota_1")
# Example end and cleanup
print("\nOTA tool operations executed successfully!")
clean_files = ["app0.bin", "app1.bin"]
for clean_file in clean_files:
os.unlink(clean_file)
if __name__ == '__main__':
main()