I can't get response from nrf52832

RE: I can't get response from nrf52832

MOHAMED AHMED ALI MAHMOUD ELSABAGH — Wed, 02 May 2018 23:18:15 GMT

it didn't work but I notice something strange according to this page here https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v12.0.0%2Fser_phy_uart_page.html&cp=4_0_0_3_2_2_2

and https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v12.0.0%2Fser_phy_uart_hci_page.html&cp=4_0_0_3_2_2_3

the first 2 bytes are the header and they contains the length of the payload bytes, and from the logic analyzer image I sent on my first post this is the sequence of bytes sent from the python script on UART

0xC0 0x00 0x05 0x00 0xFB 0xC0, ...

so does this means that the upcoming bytes for the first command is 192 bytes, because the python library is definitely not sending 192 bytes but is sending 4 bytes in the payload, so maybe that's why the nrf52 is not responding

RE: I can't get response from nrf52832

Mttrinh — Wed, 25 Apr 2018 14:02:28 GMT

Your schemtic seems fine. Try putting a supply on REG1/VDD, don't think it will make a difference but you can try.

RE: I can't get response from nrf52832

MOHAMED AHMED ALI MAHMOUD ELSABAGH — Tue, 17 Apr 2018 18:27:20 GMT

for me I am using Fanstel BT832x DVK, here is the schematic of the board https://static1.squarespace.com/static/561459a2e4b0b39f5cefa12e/t/5905ee34579fb3c5cc57eeff/1493560884625/EV+BT840+V3.pdf

I am not sure if there is something wrong with the dc-dc coil or external clock that needs special configuration in the firmware instead of using the out of the box percompiled hex files, I tried using the same hex file you are using I switched SW5 on which means the external crystal is connected

I am still getting same error

```

Serial port used: /dev/ttyUSB0
Traceback (most recent call last):
File "advertising.py", line 79, in <module>
    main(sys.argv[2])
File "advertising.py", line 55, in main
    driver.open()
File "/usr/local/lib/python2.7/dist-packages/pc_ble_driver_py-0.11.3-py2.7.egg/pc_ble_driver_py/ble_driver.py", line 127, in wrapper
    raise NordicSemiException('Failed to {}. Error code: {}'.format(wrapped.__name__, err_code))
pc_ble_driver_py.exceptions.NordicSemiException: Failed to open. Error code: 13

```

I can see packets send from my Ubuntu machine but yet I can't see any response from the Fanstel DVK

RE: I can't get response from nrf52832

Mttrinh — Wed, 14 Mar 2018 13:25:56 GMT

I used the connectivity firmware found here:

https://github.com/NordicSemiconductor/pc-ble-driver/blob/v2.2.1/hex/sd_api_v3/connectivity_1.2.2_115k2_with_s132_3.0.hex

I am using nRF52832. I am using a RF52-DK so I am using an USB cable to connect to my machine. I am running Windows on my machine.

Did you follow this to setup the pc-ble-driver correctly?

https://github.com/NordicSemiconductor/pc-ble-driver/blob/master/Installation.md

RE: I can't get response from nrf52832

MOHAMED AHMED ALI MAHMOUD ELSABAGH — Mon, 12 Mar 2018 15:54:45 GMT

Ok great can you please confirm the following

which version of firmware is flashed on your nordic chip?

are you using nrf5281 or nrf52832?

What is your machine type, is it Ubuntu?

How did you connect your machine with the nrf52 (pin out)?

if you have a logic analyzer, can you see same bytes sent over the UART tx from your machine?

Thanks so much in advance

RE: I can't get response from nrf52832

Mttrinh — Mon, 12 Mar 2018 15:36:03 GMT

Yes, it seems to work fine on my machine. I managed to run the advertising example and connect.

RE: I can't get response from nrf52832

MOHAMED AHMED ALI MAHMOUD ELSABAGH — Thu, 08 Mar 2018 15:37:22 GMT

Could you please verify that on your machine you can run the python driver on github, and connect to the Nordic running connectivity firmware in the github repo and run the example code?

I really appreciate your help

RE: I can't get response from nrf52832

MOHAMED AHMED ALI MAHMOUD ELSABAGH — Thu, 08 Mar 2018 13:14:15 GMT

I read this before it helped me with older errors, but as you can see the pi is now sending packets over UART so I am assuming the pc ble driver python is sending what it's supposed to send but problem nordic connectivity board is not replying

RE: I can't get response from nrf52832

Mttrinh — Thu, 08 Mar 2018 12:55:31 GMT

This seems to be a similiar issue, it not exactly the same but think it is worth a shot.

https://github.com/NordicSemiconductor/pc-ble-driver/issues/38

RE: I can't get response from nrf52832

MOHAMED AHMED ALI MAHMOUD ELSABAGH — Wed, 07 Mar 2018 16:04:11 GMT

I tried this also but it didn't work, it's like nordic connectivity board doesn't get the messages on tx, but I had another test which is as follows

I get 2 Nordic chip DVK and installed the sdk v12 on my machine, following this guide for serialization and flashed both connectivity firmware and soft device v 3.1.0 on my connectivity board, and flashed a serialization example on nrf52932 application board and I can see it's working and I can scan for the BLE and find it.

When I disconnect the application board and connect the RPI instead to connectivity board and run python advertising example code, I still don't get response from the nrf52832 connectivity board

RE: I can't get response from nrf52832

Mttrinh — Wed, 07 Mar 2018 09:42:40 GMT

The problem might be related to issues that have been fixed in pc-ble-driver, but have not yet made it to pc-ble-driver-py since the submodule reference has not been updated.

It is possible to try it out by updating the pc-ble-driver submodule folder to [v2.2.1](https://github.com/NordicSemiconductor/pc-ble-driver/tree/v2.2.1), and recompiling.

RE: I can't get response from nrf52832

MOHAMED AHMED ALI MAHMOUD ELSABAGH — Tue, 06 Mar 2018 16:19:15 GMT

I tried but still the same error

RE: I can't get response from nrf52832

Mttrinh — Tue, 06 Mar 2018 15:45:11 GMT

Can you try this connectivity firmware?

github.com/.../connectivity_1.2.2_115k2_with_s132_3.0.hex

RE: I can't get response from nrf52832

MOHAMED AHMED ALI MAHMOUD ELSABAGH — Fri, 02 Mar 2018 17:02:02 GMT

My main intention is to control the nordic BLE from my RPI that's why I am building from the source, and I am using the pinned version on the python library

RE: I can't get response from nrf52832

MOHAMED AHMED ALI MAHMOUD ELSABAGH — Fri, 02 Mar 2018 16:50:55 GMT

I am using this firmware version, from the C library pinned in the py repo

https://github.com/NordicSemiconductor/pc-ble-driver/blob/99b5e78f96de60ee70e749bb89b280116275fb97/hex/sd_api_v3/connectivity_1.2.0_115k2_with_s132_3.0.hex

it's not in the master branch

I suspect there is a problem in the hardware connection, do I have to connect reset pin of the connectivity board?

RE: I can't get response from nrf52832

Mttrinh — Fri, 02 Mar 2018 16:15:39 GMT

Hi,

Which version of pc-ble-driver are you using?

pc-ble-driver-py are not compatible with v5, but with v3. So you have to use pc-ble-driver tav v2.x and not master branch:

https://github.com/NordicSemiconductor/pc-ble-driver/releases

Note: v2.x releases are for SD API v2 & v3, v3.x releases are for SD_API v2 & v5.