dlech
commented
2 years ago Contents of main.zip:
"""
Coyt Barringer - 2020
Test program demonstrating data transmission between Adafruit Bluefruit BLE libraries running
on nrf52840 and Python
This uses the Nordic Uart Service (NUS) and should work concurrently with other BLE services such as HID
On the python side, the Bluetooth Low Energy platform Agnostic Klient for Python (Bleak) project
is used for Cross Platform Support and has been tested with windows 10
"""
import platform
import logging
import asyncio
from bleak import BleakClient
from bleak import BleakClient
from bleak import _logger as logger
from bleak.uuids import uuid16_dict
UART_TX_UUID = "6e400002-b5a3-f393-e0a9-e50e24dcca9e" #Nordic NUS characteristic for TX
UART_RX_UUID = "6e400003-b5a3-f393-e0a9-e50e24dcca9e" #Nordic NUS characteristic for RX
dataFlag = False #global flag to check for new data
def notification_handler(sender, data):
"""Simple notification handler which prints the data received."""
print("{0}: {1}".format(sender, data))
global dataFlag
dataFlag = True
async def run(address, loop):
print(address)
print(type(address))
async with BleakClient(address, loop=loop) as client:
#wait for BLE client to be connected
x = await client.is_connected()
print("Connected: {0}".format(x))
#wait for data to be sent from client
await client.start_notify(UART_RX_UUID, notification_handler)
while True :
#give some time to do other tasks
await asyncio.sleep(0.01)
#check if we received data
global dataFlag
if dataFlag :
dataFlag = False
#echo our received data back to the BLE device
data = await client.read_gatt_char(UART_RX_UUID)
await client.write_gatt_char(UART_TX_UUID,data)
if __name__ == "__main__":
#this is MAC of our BLE device
address = (
"E8:20:9F:75:90:08"
)
#loop = asyncio.get_event_loop()
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
loop.run_until_complete(run(address, loop))
snowuyl
xudeyang
Description
main.zip