NRF_ERROR_TIMEOUT when executing advertising example given in pc-ble-driver-py

[djedjiga salmi]

hello,

I'm working with nRF52840 dongle, i installed nRF Connect for desktop v3.6.1 on ubunto 18.4 and i am using python3. After programming  connectivity_4.1.4_usb_with_s132_5.1.0.hex and installling pc-ble-driver version 0.15.0, i tried to execute the example (Advertising)  given in pc-ble-driver i got this error when i type the comand

python3 ./advertising.py NRF52 /dev/ttyACM0

Serial port used: /dev/ttyACM0
Traceback (most recent call last):
  File "./advertising.py", line 107, in <module>
    main(sys.argv[2])
  File "./advertising.py", line 65, in main
    driver.open()
  File "/home/my_pc/.local/lib/python3.6/site-packages/pc_ble_driver_py/ble_driver.py", line 107, in wrapper
    error_code=err_code,
pc_ble_driver_py.exceptions.NordicSemiException: Failed to open. Error code: NRF_ERROR_TIMEOUT

i have obtained the same error with sudo python3 ./advertising.py NRF52 /dev/ttyACM0

Has anyone else had an issue like this ?

[Sigurd]

Hi,

Are you sure that ttyACM0 is correct ? Maybe it's ttyACM1,ttyACM2 or similar ?

Have you granted serial port access permissions to your user? To do this, run the following command:

sudo usermod -a -G dialout <username>

[djedjiga salmi]

Thank you, yes i'm sure it is ttyACM0, i have  also the serial port access permissions to my user ut i have always the same error. should i install the nRF connect SDK also?

[Sigurd]

I'm not able to reproduce this.

Did you install pc_ble_driver_py using pip? Can you double check the version that you are using?

pip show pc_ble_driver_py

[djedjiga salmi]

yes, it is 0.15.0 version

[Sigurd]

Check what this command returns:

ls -l /dev/serial/by-id

then use the com-port listed with this command, e.g. for ttyACM1:

sudo chmod a+rw /dev/ttyACM1

and then try again with the pc-ble-driver-py advertising.py script

[djedjiga salmi]

Thank you,

it return this :

total 0
lrwxrwxrwx 1 root root 13 mai    7 09:43 usb-Nordic_Semiconductor_Open_DFU_Bootloader_D6F9B927D70E-if00 -> ../../ttyACM0

i executed it by using this command : sudo python3 ./advertising.py NRF52 /dev/ttyACM0
but it is the same thing, i don't understand the reason.

Serial port used: /dev/ttyACM0
Traceback (most recent call last):
  File "./advertising.py", line 107, in <module>
    main(sys.argv[2])
  File "./advertising.py", line 65, in main
    driver.open()
  File "/home/My-pc/.local/lib/python3.6/site-packages/pc_ble_driver_py/ble_driver.py", line 107, in wrapper
    error_code=err_code,
pc_ble_driver_py.exceptions.NordicSemiException: Failed to open. Error code: NRF_ERROR_TIMEOUT

[Sigurd]

djedjiga salmi said:

Nordic_Semiconductor_Open_DFU_Bootloader_D6F9B927D70E

This means that you are in bootloader mode, and the connectivity firmware is not running.

Is the LED on the dongle blinking red ?

Could you try to program the connectivity_4.1.4_usb_with_s132_5.1.0.hex again, with nRF Connect programmer app?