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scripts/libraries: Remove ble_advertising.
aioble should be used instead. There's an example for the temperature using aioble.
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# This work is licensed under the MIT license.
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# Copyright (c) 2013-2023 OpenMV LLC. All rights reserved.
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# https://github.com/openmv/openmv/blob/master/LICENSE
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#
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# This example demonstrates a simple temperature sensor peripheral.
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#
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# The sensor's local value updates every second, and it will notify
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# any connected central every 10 seconds.
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import bluetooth
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import random
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import struct
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import time
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from ble_advertising import advertising_payload
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from machine import LED
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from micropython import const
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_IRQ_CENTRAL_CONNECT = const(1)
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_IRQ_CENTRAL_DISCONNECT = const(2)
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_IRQ_GATTS_INDICATE_DONE = const(20)
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_FLAG_READ = const(0x0002)
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_FLAG_NOTIFY = const(0x0010)
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_FLAG_INDICATE = const(0x0020)
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# org.bluetooth.service.environmental_sensing
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_ENV_SENSE_UUID = bluetooth.UUID(0x181A)
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# org.bluetooth.characteristic.temperature
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_TEMP_CHAR = (
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bluetooth.UUID(0x2A6E),
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_FLAG_READ | _FLAG_NOTIFY | _FLAG_INDICATE,
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)
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_ENV_SENSE_SERVICE = (
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_ENV_SENSE_UUID,
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(_TEMP_CHAR,),
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)
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# org.bluetooth.characteristic.gap.appearance.xml
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_ADV_APPEARANCE_GENERIC_THERMOMETER = const(768)
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class BLETemperature:
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def __init__(self, ble, name="mpy-temp"):
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self._ble = ble
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self._ble.active(True)
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self._ble.irq(self._irq)
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((self._handle,),) = self._ble.gatts_register_services((_ENV_SENSE_SERVICE,))
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self._connections = set()
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self._payload = advertising_payload(
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name=name,
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services=[_ENV_SENSE_UUID],
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appearance=_ADV_APPEARANCE_GENERIC_THERMOMETER,
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)
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self._advertise()
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self.led = LED("LED_BLUE")
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def _irq(self, event, data):
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# Track connections so we can send notifications.
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if event == _IRQ_CENTRAL_CONNECT:
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conn_handle, _, _ = data
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self._connections.add(conn_handle)
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self.led.on()
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elif event == _IRQ_CENTRAL_DISCONNECT:
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conn_handle, _, _ = data
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self._connections.remove(conn_handle)
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# Start advertising again to allow a new connection.
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self._advertise()
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self.led.off()
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elif event == _IRQ_GATTS_INDICATE_DONE:
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conn_handle, value_handle, status = data
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def set_temperature(self, temp_deg_c, notify=False, indicate=False):
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# Data is sint16 in degrees Celsius with a resolution of 0.01 degrees Celsius.
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# Write the local value, ready for a central to read.
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self._ble.gatts_write(self._handle, struct.pack("<h", int(temp_deg_c * 100)))
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if notify or indicate:
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for conn_handle in self._connections:
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if notify:
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# Notify connected centrals.
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self._ble.gatts_notify(conn_handle, self._handle)
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if indicate:
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# Indicate connected centrals.
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self._ble.gatts_indicate(conn_handle, self._handle)
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def _advertise(self, interval_us=500000):
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self._ble.gap_advertise(interval_us, adv_data=self._payload)
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if __name__ == "__main__":
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ble = bluetooth.BLE()
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temp = BLETemperature(ble)
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t = 25
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i = 0
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while True:
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# Write every second, notify every 10 seconds.
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i = (i + 1) % 10
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temp.set_temperature(t, notify=i == 0, indicate=False)
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# Random walk the temperature.
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t += random.uniform(-0.5, 0.5)
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time.sleep_ms(1000)
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@ -1,116 +0,0 @@
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# The MIT License (MIT)
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#
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# Copyright (c) 2013-2021 Damien P. George
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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#
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# Helpers for generating BLE advertising payloads.
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from micropython import const
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import struct
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import bluetooth
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# Advertising payloads are repeated packets of the following form:
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# 1 byte data length (N + 1)
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# 1 byte type (see constants below)
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# N bytes type-specific data
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_ADV_TYPE_FLAGS = const(0x01)
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_ADV_TYPE_NAME = const(0x09)
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_ADV_TYPE_UUID16_COMPLETE = const(0x3)
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_ADV_TYPE_UUID32_COMPLETE = const(0x5)
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_ADV_TYPE_UUID128_COMPLETE = const(0x7)
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_ADV_TYPE_UUID16_MORE = const(0x2)
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_ADV_TYPE_UUID32_MORE = const(0x4)
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_ADV_TYPE_UUID128_MORE = const(0x6)
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_ADV_TYPE_APPEARANCE = const(0x19)
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# Generate a payload to be passed to gap_advertise(adv_data=...).
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def advertising_payload(limited_disc=False, br_edr=False, name=None, services=None, appearance=0):
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payload = bytearray()
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def _append(adv_type, value):
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nonlocal payload
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payload += struct.pack("BB", len(value) + 1, adv_type) + value
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_append(
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_ADV_TYPE_FLAGS,
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struct.pack("B", (0x01 if limited_disc else 0x02) + (0x18 if br_edr else 0x04)),
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)
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if name:
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_append(_ADV_TYPE_NAME, name)
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if services:
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for uuid in services:
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b = bytes(uuid)
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if len(b) == 2:
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_append(_ADV_TYPE_UUID16_COMPLETE, b)
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elif len(b) == 4:
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_append(_ADV_TYPE_UUID32_COMPLETE, b)
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elif len(b) == 16:
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_append(_ADV_TYPE_UUID128_COMPLETE, b)
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# See org.bluetooth.characteristic.gap.appearance.xml
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if appearance:
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_append(_ADV_TYPE_APPEARANCE, struct.pack("<h", appearance))
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return payload
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def decode_field(payload, adv_type):
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i = 0
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result = []
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while i + 1 < len(payload):
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if payload[i + 1] == adv_type:
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result.append(payload[i + 2 : i + payload[i] + 1])
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i += 1 + payload[i]
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return result
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def decode_name(payload):
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n = decode_field(payload, _ADV_TYPE_NAME)
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return str(n[0], "utf-8") if n else ""
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def decode_services(payload):
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services = []
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for u in decode_field(payload, _ADV_TYPE_UUID16_COMPLETE):
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services.append(bluetooth.UUID(struct.unpack("<h", u)[0]))
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for u in decode_field(payload, _ADV_TYPE_UUID32_COMPLETE):
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services.append(bluetooth.UUID(struct.unpack("<d", u)[0]))
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for u in decode_field(payload, _ADV_TYPE_UUID128_COMPLETE):
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services.append(bluetooth.UUID(u))
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return services
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def demo():
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payload = advertising_payload(
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name="micropython",
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services=[bluetooth.UUID(0x181A), bluetooth.UUID("6E400001-B5A3-F393-E0A9-E50E24DCCA9E")],
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)
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print(payload)
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print(decode_name(payload))
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print(decode_services(payload))
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if __name__ == "__main__":
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demo()
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@ -29,4 +29,3 @@ freeze ("$(OMV_LIB_DIR)/", "mutex.py")
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# Bluetooth
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# Bluetooth
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require("aioble")
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require("aioble")
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freeze ("$(OMV_LIB_DIR)/", "ble_advertising.py")
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@ -24,4 +24,3 @@ require("logging")
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# Bluetooth
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# Bluetooth
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require("aioble")
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require("aioble")
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freeze ("$(OMV_LIB_DIR)/", "ble_advertising.py")
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@ -29,4 +29,3 @@ freeze ("$(OMV_LIB_DIR)/", "mutex.py")
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# Bluetooth
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# Bluetooth
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require("aioble")
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require("aioble")
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freeze ("$(OMV_LIB_DIR)/", "ble_advertising.py")
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@ -33,4 +33,3 @@ freeze ("$(OMV_LIB_DIR)/", "mutex.py")
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# Bluetooth
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# Bluetooth
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require("aioble")
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require("aioble")
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freeze ("$(OMV_LIB_DIR)/", "ble_advertising.py")
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@ -32,4 +32,3 @@ freeze ("$(OMV_LIB_DIR)/", "mutex.py")
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# Bluetooth
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# Bluetooth
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require("aioble")
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require("aioble")
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freeze ("$(OMV_LIB_DIR)/", "ble_advertising.py")
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