Gpy cannot connect to BLE device

[Skipper90]

Hi,
i have a problem with my Gpy.
I used the example code From https://docs.pycom.io/tutorials/all/ble/.

from network import Bluetooth
import time
bt = Bluetooth()
bt.start_scan(-1)

while True:
  adv = bt.get_adv()
  if adv and bt.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL) == 'Heartrate':
      print('gefunden')
      bt.stop_scan()
      try:
          print(adv.mac)
          conn = bt.connect(adv.mac)
          #bt.connect(b'\xDA\x0F\xA2\x69\x63\xCA')
          print('verbunden')
          services = conn.services()
          for service in services:
              time.sleep(0.050)
              if type(service.uuid()) == bytes:
                  print('Reading chars from service = {}'.format(service.uuid()))
              else:
                  print('Reading chars from service = %x' % service.uuid())
              chars = service.characteristics()
              for char in chars:
                  if (char.properties() & Bluetooth.PROP_READ):
                      print('char {} value = {}'.format(char.uuid(), char.read()))
          conn.disconnect()
          break
      except:
          pass
  else:
      time.sleep(0.050)

Uploading project (main folder)...
Not safe booting, disabled in settings

Reading file status
[1/1] Writing file main.py (1kb)
Upload done, resetting board...
OKets Jun  8 2016 00:22:57

rst:0x7 (TG0WDT_SYS_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff8020,len:8
load:0x3fff8028,len:2136
load:0x4009fa00,len:19880
entry 0x400a05d0
Smart Provisioning started in the background
See https://docs.pycom.io/smart for details
gefunden
b'\xcc\x80\x91J\xfb\x8d'

after the print of the mac adresse nothing happen...

The BLE device work, with NRF Connect its possible to connect and look the services.
Greetings

[sandris]

Hi, you could try to print the exception to get a better understanding of why it's failing.

except Exception as e:
    print("Failed: " + str(e))

[Skipper90]

So now this is printed.

Failed: connection refused

[Skipper90]

Thank you for your help.

Now i searched in the forum an finde a post
ble-connection-issue

my issue is very embarrassing.... my Phone with the NRF app blocked the connection while scanning...
Thank you for your help

[Skipper90]

I don´t know what is wrong...
Now it doesn´t work.

i is nit possible to connect. every time 'connection refused'

I have no idea what i am doing wrong.