LOPY BLE Peripheral

[mitchlau]

Hi i am beginner of LOPY

I am trying to send pysense data to i phone from BLE
As a result i am trying to {lopy as Peripheral -------(send data)------->i phone (central)}
My question is

1. Is there any Peripheral example to follow??
2. I have import the library on the code however there is no file Bluetooth or network (Not sure where to find the library if i need to upload with Pymakr )
3. why the code below result as 9999999999999??

I use the code below

import ubinascii
from network import Bluetooth
from time import sleep

bt = Bluetooth()
bt.init()

bt.set_advertisement(name="lopy", manufacturer_data="lopy_v1")
if bt.isscanning():
    bt.stop_scan()

bt.start_scan(-1)
while bt.isscanning():
    adv = bt.get_adv()
    if adv:
        print(adv)

RESULT::

mode:DIO, clock div:1
load:0x3fff8028,len:8
load:0x3fff8030,len:1728
load:0x4009fa00,len:0
load:0x4009fa00,len:14612
entry 0x400a059c
9
9
9
9
9
9
9
9

[mitchlau]

@mitchlau

I get it pair with IOS however i dont know how to sent data over,
Is anyone can give me an example on this

import binascii
from network import Bluetooth
from machine import Timer
import time

bluetooth = Bluetooth()
bluetooth.set_advertisement(name='LoPy', service_uuid=b'1234567890123456')

def conn_cb (bt_o):
    events = bt_o.events()   # this method returns the flags and clears the internal registry
    if events & Bluetooth.CLIENT_CONNECTED:
        print("Client connected")
        while True:
            print("data send")
            bluetooth.set_advertisement(name='LoPy',manufacturer_data="lopy_v1")
            time.sleep(2.050)
    elif events & Bluetooth.CLIENT_DISCONNECTED:
        print("Client disconnected")

bluetooth.callback(trigger=Bluetooth.CLIENT_CONNECTED | Bluetooth.CLIENT_DISCONNECTED, handler=conn_cb)

bluetooth.advertise(True)

[johand]

For BLE pairing is not needed.

Look at this example: https://docs.pycom.io/firmwareapi/pycom/network/bluetooth/gattscharacteristic.html

To send data, use:

chr2.value(MyData)

Johan

[mitchlau]

@johand

Thanks for the answer this work prefect