71 lines
2.6 KiB
Python
71 lines
2.6 KiB
Python
import bleak as b
|
|
import asyncio
|
|
|
|
TARGET_NAME = "ArduinoTENG"
|
|
|
|
TENG_SUUID = "00010000-9a74-4b30-9361-4a16ec09930f"
|
|
TENG_STATUS_CUUID = "00010001-9a74-4b30-9361-4a16ec09930f"
|
|
TENG_COMMAND_CUUID = "00010002-9a74-4b30-9361-4a16ec09930f"
|
|
TENG_READING_CUUID = "00010003-9a74-4b30-9361-4a16ec09930f"
|
|
|
|
TENG_COMMANDS = {
|
|
"NOOP": int(0).to_bytes(1),
|
|
"MEASURE_BASELINE": int(1).to_bytes(1),
|
|
}
|
|
TENG_STATUS = ["ERROR", "BUSY", "WAIT_CONNECT", "MEASURING_BASELINE", "READING"]
|
|
|
|
|
|
|
|
def teng_status_callback(characteristic, data):
|
|
value = int.from_bytes(data, byteorder="big", signed=False)
|
|
if 0 <= value and value < len(TENG_STATUS):
|
|
print(f"Status change: {TENG_STATUS[value]}")
|
|
else:
|
|
print(f"Status change (invalid): status={value}")
|
|
|
|
async def main():
|
|
devices = await b.BleakScanner.discover(return_adv=True)
|
|
# print(devices)
|
|
target_device = None
|
|
for adr, (device, adv_data) in devices.items():
|
|
if device.name == TARGET_NAME:
|
|
print(adv_data)
|
|
target_device = device
|
|
break
|
|
if target_device is None:
|
|
print("ERROR: Could not find target device")
|
|
return
|
|
print(f"Found target device: {target_device.name}: {target_device.metadata}, {target_device.details}")
|
|
print(target_device.name, target_device.details)
|
|
try:
|
|
async with b.BleakClient(target_device) as client:
|
|
for service in client.services:
|
|
print(f"Service: {service.uuid}: {service.description}")
|
|
for c in service.characteristics:
|
|
print(f"\t{c.uuid}: {c.properties}, {c.descriptors}")
|
|
teng_status = client.services.get_characteristic(TENG_STATUS_CUUID)
|
|
teng_command = client.services.get_characteristic(TENG_COMMAND_CUUID)
|
|
teng_reading = client.services.get_characteristic(TENG_READING_CUUID)
|
|
client.start_notify(teng_status, teng_status_callback)
|
|
|
|
await client.write_gatt_char(teng_command, TENG_COMMANDS["NOOP"])
|
|
await asyncio.sleep(5)
|
|
await client.write_gatt_char(teng_command, TENG_COMMANDS["MEASURE_BASELINE"])
|
|
|
|
while client.is_connected:
|
|
data = await client.read_gatt_char(teng_reading)
|
|
|
|
|
|
value = int.from_bytes(data, byteorder="little", signed=False)
|
|
print(f"Reading: {value}")
|
|
await asyncio.sleep(0.5)
|
|
except KeyboardInterrupt:
|
|
pass
|
|
except asyncio.exceptions.CancelledError:
|
|
pass
|
|
print("Disconnected")
|
|
|
|
|
|
if __name__ == "__main__":
|
|
asyncio.run(main())
|