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23,725 questions

29
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Last activity 2017-07-21 09:34:24 +0200 by Jørgen Holmefjord flag of Norway

I am running MCP9808 on NRF52 EVB, i have this following program which is not giving the correct values on terminal display

I have this program running on KEIL 5, what could be the problem with the code and Do you guys have any sample code for mcp9808? Note- I am using the wired connection not a Bluetooth app to sense the ... (more)

42
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1
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1
answer
Last activity 2017-07-21 09:17:27 +0200 by Jørgen Holmefjord flag of Norway

nrf52 timer example, over 5 minutes event handler.

When I test the timer example with nrf52832 DK, it so nice to 4 minutes.

uint32_t time_ms = 240000;

But when I set the time interval over 5 minutes, then the event handler run more rapidly.

So, what should I do ... (more)

23
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Last activity 2017-07-21 08:57:22 +0200 by wen

how to achieve telec certification

how to achieve telec certification

36
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1
answer
Last activity 2017-07-21 08:53:40 +0200 by Jørgen Holmefjord flag of Norway

OTA tutorial ?

Hello,

I'm looking to implement the OTA on my nRF52, but I couldn't find any help online. I would like to do it with my iOS and my Android app.

Does anyone have a tutorial link to help ... (more)

33
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1
answer
Last activity 2017-07-21 08:50:29 +0200 by Jørgen Holmefjord flag of Norway

Is the peer manager still experimenting?

I saw an answer that the peer manager is experimenting in SDK 9.

Is the peer manager still experimenting in SDK 11,12 ??

30
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Last activity 2017-07-21 05:45:50 +0200 by kte608

Where can I find a simple example project with nrf52, s132, and segger debugging? [closed]

Preferrably under linux using gcc and the command prompt.

I am most interested in project setup, loading the soft device, and making sure all the core systems are working.

If possible, the example should be with the latest SDK (12 ... (more)

32
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1
answer
Last activity 2017-07-21 03:23:26 +0200 by Sparqq

Using NRF52-DK for production testing DTM

Soon we will start production and this is my first time using a Nordic chip. During production I want to test for output power en center frequency with a development kit as described in An34.

The chip we wil use ... (more)

17
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Last activity 2017-07-21 02:37:43 +0200 by Jim

connection without nrf toolbox

Hi, all.

I test using ble_app_uart in example folder.

Test result, I can't connect without nRF toolbox .

How can I connect without nRF toolbox?

191
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2
votes
4
answers
Last activity 2017-07-20 21:53:51 +0200 by JG

nRF52840 over the air firmware/software update

Does nRF52840 support over air firmware/software update? Is there any white paper or app note available?

43
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1
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1
answer
Last activity 2017-07-20 21:48:07 +0200 by leonwj

improved softdevice debugging

I remember reading somewhere an article on how debugging with softdevice was going to be easier, with the debugger doing something along the lines of actually not stopping execution when hitting a breakpoint, but rather executing a loop in the ... (more)

41
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Last activity 2017-07-20 20:38:43 +0200 by amjabb

CoAP IOT Cloud Example Server Requests

I have set up the Cloud Coap example in the Iot SDK using a nrf52 Dk. I have been successful in sending a serialized byte array from the nordic to my cloud server. I need to be able to communicate ... (more)

49
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1
vote
1
answer
Last activity 2017-07-20 19:39:25 +0200 by purgoufr

How to get rssi without connection via central device

I use nrf51822 sdk130 (central device) and nrf51822 sdk110(peripheral device). I want to get rssi value of the peripheral device using the central device without connection. Is it possible to read rssi value of peripheral device without connection?

58
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2
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1
answer
Last activity 2017-07-20 19:27:07 +0200 by endnode

DK to DK using SWD [closed]

I have looked and looked and it may be out there but I haven't found it.
The goal is to use one DK 840 to program another DK840 using the SWD port on the RX side and using the ...
(more)

62
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1
answer
Last activity 2017-07-20 19:13:57 +0200 by endnode

nRF52840 DFU

Hi Hung Bui,

I am working DFU now, all the thing's good for nFR52832, but in same way nFR52840 not work, I just wonder nFR52840 is ready for DFU?

Thanks.

JG

24
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Last activity 2017-07-20 18:48:46 +0200 by maxishev

nRF52832_QFAA problem with NFC pins

Hello!

We designed and manufactured board with nRF52832_QFAA. The NFC pins was configured as IO and connected to sensors. The problem is that we see that those pins get 3.3V with power-up of Nordic. We tried to make different ... (more)

18
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answers
Last activity 2017-07-20 18:46:52 +0200 by Louis

[FDS] Unable to free storage (garbage collector doesn't work)

No matter flash is full or not, calling fds_file_delete() and fds_gc() does not free storage. We checked the content in flash are not 0xFF. Moreover, after this issue, always fail to create files or records.

25
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1
vote
1
answer
Last activity 2017-07-20 17:55:57 +0200 by endnode

Changing BLE connection interval time

I'd like to be able to change the ble connection interval during during runtime to save power. I followed this post and found that p_ble_evt->evt.gap_evt.params.connected.conn_params.max_conn_interval was 24 (ms?). However I can't get ... (more)

16
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Last activity 2017-07-20 17:14:39 +0200 by fteng

lfclk, rtc issue on SDK13

I am trying to set up RTC2 by following an example https://github.com/NordicSemiconducto... I ported it to my project which is running a softdevice on nRF52. It works perfectly fine on SDK11 but has problems on SDK13.0 ... (more)

43
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1
vote
2
answers
Last activity 2017-07-20 17:13:45 +0200 by annapalu

Advertising timeout can not be closed

HI, I want to turn off the broadcast timeout, but when I change the broadcast timeout macro to 0 when the program does not work, Modify as follows:

#define APP_ADV_TIMEOUT_IN_SECONDS      0//180

72
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votes
3
answers
Last activity 2017-07-20 16:09:01 +0200 by vidal

Antenna tuning with chipset antenna

Hello,

I developed a Nordic board with 2450AT18B100 chipset antenna. I follow the design of Solar Powered Sensor Beacon.

http://infocenter.nordicsemi.com/inde... I test it and it works fine, but I want to tuning the antenna in order ... (more)

25
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2
votes
1
answer
Last activity 2017-07-20 15:43:15 +0200 by Adrian Lita

nRF51422 radio issues

Dear Nordic,

I have built a board using nRF51422, and I've just manage to populate it and start it up. I'm using a modified example (peripheral_lbs), and everything seems to work ok (leds and buttons), but the radio ... (more)

64
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Last activity 2017-07-20 14:34:28 +0200 by Bhaskar

NRF52832 - Monopole Antenna on 24mm Dia PCB

Hi,

I need to design a small nRF52 board On 24mm Dia 2-layer PCB, same like nRF51822 Bluetooth Smart Beacon Kit (nRF51822 Coin-Cell design). Please find the attached Schematics and layout files for your reference.

For mono-pole antenna,Layout Reference ... (more)

63
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votes
1
answer
Last activity 2017-07-20 14:31:08 +0200 by Ehsan

Schematic for custom PCB

Hi,

I am designing a custom PCB using the nRF51422 chip. I have a program that I developed on the nRF51-DK. The program reads the capacitance value of a proximity sensor at one of the analogue input pins and then ... (more)

47
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1
answer
Last activity 2017-07-20 14:26:17 +0200 by khosla

Sniffer not functioning.

Hi, I am using radio with ppi to advertize packets as shown in the mainc file attached. Even after allocating the access address of Bluetooth on line 196 as set_address0(0x8E89BED6); and advertizing channel selected as 37 as shown in ... (more)

41
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1
answer
Last activity 2017-07-20 14:23:32 +0200 by Krzysztof Loska flag of Poland

nRF52840 OpenThread NCP with wpantund on Linux

Hi everyone,

I was wondering if the nRF52840 DK will have NCP OpenThread support for wpantund Linux (other than Raspberry Pi) or if it already exists. I flashed the nRF52840 DK with the NCP binary from the 0.10.0 ... (more)

28
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Last activity 2017-07-20 13:28:35 +0200 by Andy

Best way to update a 32-bit word in flash - SDK13.1

Hi,

I want to store the CRC of the current firmware in the flash, for DFU purposes. Almost all of the threads I've seen so far reference the pstorage API but it's no longer supported since SDK12. There ... (more)

34
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answers
Last activity 2017-07-20 13:26:53 +0200 by Celik

The advertising interval changing to 2000ms?

Hi! Im trying to figure out the power consumption of two types of beacons that uses nRF51 and nRF52. I have connected a small resistor in between the supply and measuring the voltage drop. In the beginning I observed that ... (more)

209
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3
votes
1
answer
Last activity 2017-07-20 13:09:42 +0200 by Hung Bui

Does any softdevice support Mesh, per BLE5?

Hello, I'm pretty sure the new BLE 5 will come out soon and it will integrate the mesh. And if mesh needs to be done at a protocol level, it must be the softdevice.

So, any softdevice so far ... (more)

22
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Last activity 2017-07-20 12:10:59 +0200 by annapalu

Delete bonding/Whitelist clear

Hi All,

i need some helps. I need a device that can connect with one phone only, so i have created a whitelist wih size of 1.

During the life of device the device can be delete the bonding information ... (more)

34
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1
vote
1
answer
Last activity 2017-07-20 11:56:40 +0200 by levshkatov

Can't connect Android to nRF52832

I'm trying to create a connection between Android 6.0 and nRF52832. I created a service, like in tutorial, added it's uuid to adv packet (I seeit in nRF Connection). I can connect to it using nRF Connection ... (more)

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