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esp-idf/examples/protocols/esp_local_ctrl/scripts/esp_local_ctrl.py

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#!/usr/bin/env python
#
# 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.
#
from __future__ import print_function
import argparse
import os
import ssl
import struct
import sys
from builtins import input
import proto
from future.utils import tobytes
# The tools directory is already in the PATH in environment prepared by install.sh which would allow to import
# esp_prov as file but not as complete module.
sys.path.insert(0, os.path.join(os.environ['IDF_PATH'], 'tools/esp_prov'))
import esp_prov # noqa: E402
# Set this to true to allow exceptions to be thrown
config_throw_except = False
# Property types enum
PROP_TYPE_TIMESTAMP = 0
PROP_TYPE_INT32 = 1
PROP_TYPE_BOOLEAN = 2
PROP_TYPE_STRING = 3
# Property flags enum
PROP_FLAG_READONLY = (1 << 0)
def prop_typestr(prop):
if prop['type'] == PROP_TYPE_TIMESTAMP:
return 'TIME(us)'
elif prop['type'] == PROP_TYPE_INT32:
return 'INT32'
elif prop['type'] == PROP_TYPE_BOOLEAN:
return 'BOOLEAN'
elif prop['type'] == PROP_TYPE_STRING:
return 'STRING'
return 'UNKNOWN'
def encode_prop_value(prop, value):
try:
if prop['type'] == PROP_TYPE_TIMESTAMP:
return struct.pack('q', value)
elif prop['type'] == PROP_TYPE_INT32:
return struct.pack('i', value)
elif prop['type'] == PROP_TYPE_BOOLEAN:
return struct.pack('?', value)
elif prop['type'] == PROP_TYPE_STRING:
return tobytes(value)
return value
except struct.error as e:
print(e)
return None
def decode_prop_value(prop, value):
try:
if prop['type'] == PROP_TYPE_TIMESTAMP:
return struct.unpack('q', value)[0]
elif prop['type'] == PROP_TYPE_INT32:
return struct.unpack('i', value)[0]
elif prop['type'] == PROP_TYPE_BOOLEAN:
return struct.unpack('?', value)[0]
elif prop['type'] == PROP_TYPE_STRING:
return value.decode('latin-1')
return value
except struct.error as e:
print(e)
return None
def str_to_prop_value(prop, strval):
try:
if prop['type'] == PROP_TYPE_TIMESTAMP:
return int(strval)
elif prop['type'] == PROP_TYPE_INT32:
return int(strval)
elif prop['type'] == PROP_TYPE_BOOLEAN:
return bool(strval)
elif prop['type'] == PROP_TYPE_STRING:
return strval
return strval
except ValueError as e:
print(e)
return None
def prop_is_readonly(prop):
return (prop['flags'] & PROP_FLAG_READONLY) != 0
def on_except(err):
if config_throw_except:
raise RuntimeError(err)
else:
print(err)
def get_transport(sel_transport, service_name, check_hostname):
try:
tp = None
if (sel_transport == 'http'):
example_path = os.environ['IDF_PATH'] + '/examples/protocols/esp_local_ctrl'
cert_path = example_path + '/main/certs/rootCA.pem'
ssl_ctx = ssl.create_default_context(cafile=cert_path)
ssl_ctx.check_hostname = check_hostname
tp = esp_prov.transport.Transport_HTTP(service_name, ssl_ctx)
elif (sel_transport == 'ble'):
tp = esp_prov.transport.Transport_BLE(
devname=service_name, service_uuid='0000ffff-0000-1000-8000-00805f9b34fb',
nu_lookup={'esp_local_ctrl/version': '0001',
'esp_local_ctrl/session': '0002',
'esp_local_ctrl/control': '0003'}
)
return tp
except RuntimeError as e:
on_except(e)
return None
def version_match(tp, expected, verbose=False):
try:
response = tp.send_data('esp_local_ctrl/version', expected)
return (response.lower() == expected.lower())
except Exception as e:
on_except(e)
return None
def get_all_property_values(tp):
try:
props = []
message = proto.get_prop_count_request()
response = tp.send_data('esp_local_ctrl/control', message)
count = proto.get_prop_count_response(response)
if count == 0:
raise RuntimeError('No properties found!')
indices = [i for i in range(count)]
message = proto.get_prop_vals_request(indices)
response = tp.send_data('esp_local_ctrl/control', message)
props = proto.get_prop_vals_response(response)
if len(props) != count:
raise RuntimeError('Incorrect count of properties!')
for p in props:
p['value'] = decode_prop_value(p, p['value'])
return props
except RuntimeError as e:
on_except(e)
return []
def set_property_values(tp, props, indices, values, check_readonly=False):
try:
if check_readonly:
for index in indices:
if prop_is_readonly(props[index]):
raise RuntimeError('Cannot set value of Read-Only property')
message = proto.set_prop_vals_request(indices, values)
response = tp.send_data('esp_local_ctrl/control', message)
return proto.set_prop_vals_response(response)
except RuntimeError as e:
on_except(e)
return False
if __name__ == '__main__':
parser = argparse.ArgumentParser(add_help=False)
parser = argparse.ArgumentParser(description='Control an ESP32 running esp_local_ctrl service')
parser.add_argument('--version', dest='version', type=str,
help='Protocol version', default='')
parser.add_argument('--transport', dest='transport', type=str,
help='transport i.e http or ble', default='http')
parser.add_argument('--name', dest='service_name', type=str,
help='BLE Device Name / HTTP Server hostname or IP', default='')
parser.add_argument('--dont-check-hostname', action='store_true',
# If enabled, the certificate won't be rejected for hostname mismatch.
# This option is hidden because it should be used only for testing purposes.
help=argparse.SUPPRESS)
parser.add_argument('-v', '--verbose', dest='verbose', help='increase output verbosity', action='store_true')
args = parser.parse_args()
if args.version != '':
print('==== Esp_Ctrl Version: ' + args.version + ' ====')
if args.service_name == '':
args.service_name = 'my_esp_ctrl_device'
if args.transport == 'http':
args.service_name += '.local'
obj_transport = get_transport(args.transport, args.service_name, not args.dont_check_hostname)
if obj_transport is None:
print('---- Invalid transport ----')
exit(1)
if args.version != '':
print('\n==== Verifying protocol version ====')
if not version_match(obj_transport, args.version, args.verbose):
print('---- Error in protocol version matching ----')
exit(2)
print('==== Verified protocol version successfully ====')
while True:
properties = get_all_property_values(obj_transport)
if len(properties) == 0:
print('---- Error in reading property values ----')
exit(4)
print('\n==== Available Properties ====')
print('{0: >4} {1: <16} {2: <10} {3: <16} {4: <16}'.format(
'S.N.', 'Name', 'Type', 'Flags', 'Value'))
for i in range(len(properties)):
print('[{0: >2}] {1: <16} {2: <10} {3: <16} {4: <16}'.format(
i + 1, properties[i]['name'], prop_typestr(properties[i]),
['','Read-Only'][prop_is_readonly(properties[i])],
str(properties[i]['value'])))
select = 0
while True:
try:
inval = input("\nSelect properties to set (0 to re-read, 'q' to quit) : ")
if inval.lower() == 'q':
print('Quitting...')
exit(5)
invals = inval.split(',')
selections = [int(val) for val in invals]
if min(selections) < 0 or max(selections) > len(properties):
raise ValueError('Invalid input')
break
except ValueError as e:
print(str(e) + '! Retry...')
if len(selections) == 1 and selections[0] == 0:
continue
set_values = []
set_indices = []
for select in selections:
while True:
inval = input('Enter value to set for property (' + properties[select - 1]['name'] + ') : ')
value = encode_prop_value(properties[select - 1],
str_to_prop_value(properties[select - 1], inval))
if value is None:
print('Invalid input! Retry...')
continue
break
set_values += [value]
set_indices += [select - 1]
if not set_property_values(obj_transport, properties, set_indices, set_values):
print('Failed to set values!')
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