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43
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1
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Last activity 2017-05-26 14:31:42 +0200 by endnode

nRF52840 availability

When will the nRF52840 be available for production ?

55
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1
vote
1
answer
Last activity 2017-05-26 11:04:58 +0200 by Torbjørn Øvrebekk

OpenThread nRF52840 radio TX power output

Hi All,

I would like to know what the default value is for the radio TX power for the nRF5240. According to Nordic's specification, the output power is programmable from +8 dBm to -20 dBm. I see there is ... (more)

33
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no
votes
2
answers
Last activity 2017-05-25 12:19:56 +0200 by Radosław Koppel

nRF52840 USB MSD Slow Write Speed

Hi, I have recently acquire a nRF52840 preview development board to prototype a USB MSD. With the example provided in the SDK V13, I tested the write speed and it was far from usable.

I am not sure if it ... (more)

59
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1
vote
1
answer
Last activity 2017-05-24 13:20:08 +0200 by Sigurd flag of Norway

nRF52840 packages

Hi Engineers!

have a question about V/T/QFN package version instead of AQFN.

We prepare our PCB (China) for mass production so, need to understand possible packages options for the future.

Thanks

260
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1
vote
1
answer
Last activity 2017-05-23 17:07:50 +0200 by Jørgen Holmefjord flag of Norway

Ble_app_beacon and nrf52840

Hi,

I have downloaded the latest nrf52 v13 sdk. And i am using nrf52840 PDK.

And i would like to use the beaco_n example. But i am seeing that the ble_App_beacon folder does not contain the hex files for pca10056 ... (more)

74
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no
votes
1
answer
Last activity 2017-05-22 13:41:08 +0200 by Kristin flag of Norway

Need some help with nRF52 Beacon Project

Hello everyone,

I am kind of a newbie but I really like tinkering with the Nordic DKs.

I have got two Nordic 52 DKs one nRF52832 DK and nRF52840 PDK.

I flashed the Eddystone beacon protocol on nRF52832 using the ... (more)

17
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no
votes
1
answer
Last activity 2017-05-22 11:27:59 +0200 by Jørgen Holmefjord flag of Norway

nRF52840 CryptoCell Curve Support

Hi

Does the CryptoCell in the nRF52840 support secp256k1? In this documentation it says at one point Koblitz curves using fixed parameters, up to 256 bits, are supported, but then in the table below I don't see the curve listed.

Thanks

63
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1
vote
1
answer
Last activity 2017-05-22 09:43:59 +0200 by Jørgen Holmefjord flag of Norway

s140 nrf52840 freeRTOS

Hi Engineers!

does new s140 nrf52840 support freeRTOS like s132 does ?

Thanks!

39
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no
votes
1
answer
Last activity 2017-05-20 02:03:44 +0200 by RK flag of Singapore

Is only a single async UART supported on the NrF52 832/840 devices?

Is only a single async UART supported on the NrF52 832/840 devices?

68
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no
votes
1
answer
Last activity 2017-05-19 20:56:28 +0200 by Daniel Wang flag of Korea, Republic of

nRF52840 DK 2016.49

We have received few nRF52840 preview DK. And one among them has a white sticker label which says 2016.49 and all others have 2017.14.

Should we be using the ones with 2017.14 (assuming this to be latest)?

56
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1
vote
2
answers
Last activity 2017-05-19 14:32:33 +0200 by Roger flag of South Africa

Including "app_uart.h" in main program of 'simple_coap_server' example

HI All,

I wonder if someone can help me out. I would like to send serial data by modifying the 'simple_coap_server' main program. I added the following header 'app_uart.h' to make use of the functions but when I compile ... (more)

30
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1
vote
1
answer
Last activity 2017-05-19 09:51:17 +0200 by beres1800

SDK13.0 - nrf_strerror.c: No such file or directory

Hi, I am currently going through the GCC and Eclipse tutorial. Now I struggle to compile the project.

I installed the blinky project (nRF5_SDK_11.0.0_blinky_blank_pca10040.zip) and I replaced the makefile in armgcc by the original SDK13 example makefile ... (more)

36
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1
vote
1
answer
Last activity 2017-05-18 17:44:39 +0200 by Roger flag of South Africa

OpenThread multi-hop node testing

Hi All,

I'm currently setting up three nRF52840 DK nodes, two nodes are routers and one is an end-device. My plan is to introduce more node in the network later on. The IP address details of the nodes are ... (more)

44
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1
vote
1
answer
Last activity 2017-05-16 16:35:33 +0200 by Jørgen Holmefjord flag of Norway

Using CLI alongside NRF_LOG_INFO()

Hello,

I'm trying to set up an app that enables the command line interface (CLI) over UART as well as the logging.

This is the what the main looks like:

int main(void)
{
    ret_code_t err_code;

    // Initialize nRF clock driver ...
(more)

97
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no
votes
1
answer
Last activity 2017-05-16 14:36:56 +0200 by Andrzej Kaczmarek

RX on LE Coded PHY

Hi,

I noticed weird behaviour on nRF52840 when using LE Coded PHY.

Connection access address is configured as logical address 1 and it works fine when using 1M and 2M PHYs. As soon as I switch to Coded PHY the ... (more)

32
views
no
votes
no
answers
Last activity 2017-05-16 12:00:33 +0200 by Nicolas Brunner

nrf_serial drv_err

Hello, I'm using a modified version of the serial example of the SDK 13.0.0 with a PCA10056. The modification are that i use nrf_serial_read in non-blocking mode (timeout = 0) and i use NRF_UART_HWFC_DISABLED. When i send data ... (more)

74
views
3
votes
1
answer
Last activity 2017-05-16 09:25:57 +0200 by Roger flag of South Africa

How to set node as child role in OpenThread?

Hi All,

At the moment, I have three nodes and would like to configure one node as an end-device and the other two as routers. Using CoAP, the simple_coap_server is used for the router nodes and the simple_coap_client is used ... (more)

224
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1
vote
1
answer
Last activity 2017-05-15 22:06:33 +0200 by Roger flag of South Africa

OpenThread API interface with OpenThread stack

Hi Everyone,

I'm currently busy going through the OpenThread API and examples to better understand what all the functions do. However, I don't fully understand where the software is for the OpenThread stack and how it is burned ... (more)

63
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no
votes
1
answer
Last activity 2017-05-15 15:12:11 +0200 by Jørgen Holmefjord flag of Norway

802.15.4 / Thread current consumption

Anyone done or seen current consumption measurements for the Thread SDK on nRF52840?

I need to understand relation with other technologies and other chipses on this, and I of course expect the nRF to be outstanding :) Numbers for routers with ... (more)

40
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no
votes
1
answer
Last activity 2017-05-15 12:57:20 +0200 by Bjørn Spockeli flag of Norway

nRF52840 DEC2 Capacitor

Hello dear Engineers!

the questions are should I connect pins DEC2:A18 and DEC2:E24 externally ?

shuold I use Capacitors to decouple both these pins (in Reference no CAPs)

thanks you!

55
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no
votes
1
answer
Last activity 2017-05-12 09:02:22 +0200 by Bjørn Spockeli flag of Norway

when do I get the S140 SoftDevice Specification documentation?

Hi

I want to porting to nRF52840 but since S140 SoftDevice Specification documentation doesn't exist

I can not proceed with porintg.

I need S140's detail memory map and Hardware peripherals.

when do I get the S140 SoftDevice Specification ... (more)

48
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no
votes
no
answers
Last activity 2017-05-10 04:09:29 +0200 by C. Jimenez

Unable to program NRF52840 PDK

I just received my new NRF52480 PDK, but it will not respond to any commands.

I tried nrfjprog -e -f nrf52 and this is the log output:

--------------------------------------------------------------------------------
C:\Program Files (x86)\Nordic Semiconductor\nrf5x\bin\nrfjprog.exe -e -f nrf52 ...
(more)

44
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1
vote
1
answer
Last activity 2017-05-08 12:36:10 +0200 by Jørgen Holmefjord flag of Norway

Does the Power Profiler Kit support the new nRF52840 Preview DK?

I'm thinking about doing some power consumption experiments with the new BLE5.0 standard.

Has anyone tried to use this power profiler kit (order# nRF6707) on the new Bluetooth5 PDK (order# nRF52840-PDK)?

It is not listed as a 'supported ... (more)

400
views
2
votes
1
answer
Last activity 2017-05-06 06:15:09 +0200 by Porter

Mesh for nRF52840 development Kit?

I want to use the development kit for Bluetooth 5.0 IoT product development.

Is there already a bluetooth mesh software available for the nRF52840 development kit?

Or when will this feature be available for the nRF52840 chip?

62
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no
votes
1
answer
Last activity 2017-05-06 00:14:42 +0200 by Jason Wright

nRF52840 engineering samples availability

Hate to ask this question here, and I have seen the other threads, but I am hoping to buy a small quantity of nRF52840-QIAA engineering samples (just the chip - not the PDK) and have not had any luck with the ... (more)

51
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no
votes
1
answer
Last activity 2017-05-05 18:42:23 +0200 by Vlad Mokhnachov

[Bug Report] SPI frequency not more then 8 MHz

I have used NRF52840 and SDK 13.0.0. Module SPIM.

Nrf driver does not support frequency more then 8 MHz(enum does not have constants for 16MHz and for 32MHz). But I have found constants for mode 16MHz/32MHz ... (more)

24
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no
votes
1
answer
Last activity 2017-05-04 11:47:33 +0200 by Petter Myhre flag of Norway

Advertise Specific Number of Packet

Hello i am using Nrf52840 with sdk 132 and version 12.2

i am using the Heart Rate example as template.now i am just testing. Before making connection,i like to Advertise Specific Number of Packet for example one ... (more)

59
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no
votes
1
answer
Last activity 2017-05-03 15:07:34 +0200 by Petter Myhre flag of Norway

Require BLE 4.2 key exchange but not MITM

I have an application which requires protection from passive eavesdropping, but not man in the middle attacks. I want to enforce the use of diffie hellman key exchange.

Security Mode 1 Level 4 does enforce diffie hellman key exchange, but ... (more)

66
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no
votes
1
answer
Last activity 2017-04-27 20:22:19 +0200 by Jakub Rzeszutko

SPI manager queue limitations

Hi all,

Having a bit of an issue with the SPI manager scheduler. When sending small packets (<4 bytes), I seem to be able to queue as many requests as I want.

However, sending a larger packet - even without any ... (more)

46
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no
votes
1
answer
Last activity 2017-04-26 11:12:02 +0200 by Jørgen Holmefjord flag of Norway

nrf52840 trace pins mapping

Hello,

After looking for pin mapping for TRACECLK and TRACEDATA[*] for nrf52840 I've seen 3 different mappings:

P0.07, P1.00, P0.11, P0.12, P1.09 in http://infocenter.nordicsemi.com/topi... The schematic for the preview development ... (more)

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