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21,591 questions

9
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Last activity 2017-04-22 02:23:54 +0200 by Anatomy_Park

TWIS Slave and TWI Master mode drivers Example

I am working through the TWIS Slave and TWI Master mode drivers Example using SDK 12 with the nRF52832 PCA10040 board and having issues. I am using Minicom through the terminal on a Mac to talk to the board. After ... (more)

42
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2
votes
1
answer
Last activity 2017-04-22 01:43:55 +0200 by edougal

Weird Problem where Segger RTT breaks if using more than 8kB of RAM

I started a new software project on the nRF52832 a couple of weeks ago. I've been using Segger RTT for a lot of debugging with no problem throughout the beginning of the process. I've recently hit an issue ... (more)

16
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no
votes
1
answer
Last activity 2017-04-21 23:32:03 +0200 by endnode

pheripheral advertising.

I'm using s110 pheripheral mode in my application. I want it to be in sleep mode and do not advertise untill a central want to connect it. Is it possible, when a central start scan my pheripheral device read ... (more)

28
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no
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no
answers
Last activity 2017-04-21 18:31:31 +0200 by Definitely Confused

nRF52832 Internal Oscillator Softdevice Enable Hanging

I'm using the nRF52832 chip without an external crystal. I configured it to use the internal RC with:

nrf_clock_lf_cfg_t clock_lf_cfg;
clock_lf_cfg.source = NRF_CLOCK_LF_SRC_RC;
clock_lf_cfg.rc_ctiv = 16;
clock_lf_cfg.rc_temp_ctiv = 2;
clock_lf_cfg.xtal_accuracy = 0;

// Initialize SoftDevice.
SOFTDEVICE_HANDLER_APPSH_INIT(&clock_lf_cfg, true);

However, the ... (more)

17
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no
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no
answers
Last activity 2017-04-21 18:21:18 +0200 by jhennrich

nRF5 with input-multiplexer on ADC pin, optimization required

Hey, I am trying to sample from 10 analog sensors and stream the results via bluetooth. Since the nRF5 is on a board that only lets me access 5 Pins, I am using a 16:1 multiplexer connected to a ... (more)

26
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no
answers
Last activity 2017-04-21 18:04:32 +0200 by Corey Bird

Does hardware control SPIS MISO Pin?

I've run into some interesting behaviour in my code and wanted to see if anyone can clarify for me. It seems as though the SPIS module doesn't set the MISO pin as high impedance when the CSN pin ... (more)

26
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no
votes
1
answer
Last activity 2017-04-21 18:01:48 +0200 by endnode

nrf_log from debug port

Hi, I'm using nrf51dk board and nrf_log came out correctly on my RTT terminal with built in module. After that I use debug port (P20) to program to my custom module. I've vdd, gnd, swdio and swdclk connected ... (more)

13
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answers
Last activity 2017-04-21 17:01:30 +0200 by Pete

OpenMesh low power

I'm looking to use the nrf open mesh on battery powered devices based on nrf51822. I would like to enable the mesh for short periods of time to transmit values (~50 nodes, each with a single 20 byte attribute ... (more)

23
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answers
Last activity 2017-04-21 16:50:42 +0200 by F0cks

Cannot restart advertising in Beacon example

Hey guys!

I face a problem that I have not been able to solve since several days...

I would like to send only one advertising frame every 4 seconds. I do not want to use connectable mode since I only ... (more)

29
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no
votes
no
answers
Last activity 2017-04-21 16:36:39 +0200 by Devin

How to solve reset problem at ESD status?

Hi, Dear Expert:

 I am an Electronic Engineer. We used nRF51422 or nRF51822 at our products, but found the products was easily  reset when did +/-1KV contact ESD testing at charging  pogo pin. So, I added a 1uF capacitor between ...
(more)

65
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3
votes
2
answers
Last activity 2017-04-21 16:32:45 +0200 by Wojtek flag of Poland

So we made a decision to buy the dev kit, but then what? ( mac)

I am spending the last 3 days trying to make sure somebody on this plant made it using a mac. Write a simple program and flash it to the DK. (before we make our own pcb)

I was able to ... (more)

15
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no
votes
1
answer
Last activity 2017-04-21 16:30:15 +0200 by run_ar

How to read 0x1801 gerneric attribute service in iOS ?

Hi,

I have changed in my services so I have added 0x2A05 (service changed) characteristic in my 0x1801 service. But I am not able to read the service.

In didDiscoverServices I have below code.

- (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError ...
(more)

61
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no
votes
1
answer
Last activity 2017-04-21 15:59:14 +0200 by Jørgen Holmefjord flag of Norway

Android app

Hi, i'm currently using two NRF52 (1 central and 1 peripheral) using the ble_app_blinky and the ble_app_multilink_central.

I would now like to connect my Android phone with the Central in ordrer to control several NRF devices.

How can I ... (more)

27
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no
votes
no
answers
Last activity 2017-04-21 15:35:05 +0200 by Bruce

Can we add capacitor to the swdio pin to improve ESD capacity?

Hi experts,

Can we add capacitor to the swdio pin to improve ESD capacity? We have make some sample that add 1uF capacitor to the swdio, indeed have improved the ESD capacity. But we don't know whether it will ... (more)

67
views
1
vote
1
answer
Last activity 2017-04-21 15:13:58 +0200 by Kristin flag of Norway

[nrf52832][S132 4.0.0] connection fails: exchange MTU request is not received on evt.common_evt.conn_handle=2

Configuration:

(1) 52832 PCA10040;(2) softdevice: s132_nrf52_4.0.2; (3) sdk 13.0.0(4) 52832 configure 4 conccurent peripheral connections:

ble_cfg_t ble_cfg;
memset(&ble_cfg, 0, sizeof(ble_cfg));
ble_cfg.gap_cfg.role_count_cfg.periph_role_count  = 4;
ble_cfg.gap_cfg.role_count_cfg.central_role_count = 0;
ble_cfg.gap_cfg ...
(more)

52
views
1
vote
1
answer
Last activity 2017-04-21 15:02:32 +0200 by Bjørn Spockeli flag of Norway

HRM Example on Sparkfun nRF52 board

Hi

I have this board: https://www.sparkfun.com/products/13990 connected to a PCA10040 Nordic board. I am able to write and debug the Sparkfun board (the blinky LED example). I am now trying to get the ANT+ HRM ... (more)

26
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no
votes
1
answer
Last activity 2017-04-21 15:00:46 +0200 by Jørgen Holmefjord flag of Norway

Running Zephyr beacon sample without dev kit

I'm having issues executing any Zephyr project on a breadboard connected to a ISP1302. It works fine on the nRF51-DK but anything I try a final hardware nothing happens. Tried LED blink, UART comms and now a beacon (because ... (more)

16
views
no
votes
1
answer
Last activity 2017-04-21 15:00:17 +0200 by Rishi

Secure DFU - Issue in updating the application. [closed]

Hello, I am trying to implement OTA firmware update using Secure DFU.

SDK - 12.2

Softdevice - s132

Board - PCA10040 (nRF52)

I followed instructions mentioned here

Issues:

  • Once the bootloader code has been uploaded, device advertises as DFUTARG.

  • Able to connect ...

(more)

25
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no
votes
no
answers
Last activity 2017-04-21 14:58:39 +0200 by bart

pstorage block size

I was wondering what would be a good block size, and saw this in the documentation:

For example, if a module has a table with 10 entries, and each entry is 64 bytes in size, it can request 10 blocks ...

(more)

63
views
no
votes
1
answer
Last activity 2017-04-21 14:50:50 +0200 by Jørgen Holmefjord flag of Norway

PCA10040 mechanical specification [closed]

Hello,

Is there a mechanical specification document for the nRF52 development kit (PCA10040)?

I can extrapolate from the Arduino Uno Rev 3 specification (P1-4 connectors and holes) but I can't do it for the P20 connector (with precision).

Thanks ... (more)

160
views
4
votes
2
answers
Last activity 2017-04-21 14:43:48 +0200 by Sanjay Shreedharan

Integrating Buttonless DFU: with extra custom 128bit UUID (SDK 12.x)

Assuming SDK 12.x

For those people that want to integrate the Buttonless DFU service to their app, which uses already one custom base 128bit UUID, please make sure to:

  1. Edit softdevice_handler.c (located at components/softdevice/common/softdevice_handler/):

    uint32_t ...
(more)

41
views
no
votes
2
answers
Last activity 2017-04-21 14:40:09 +0200 by Jørgen Holmefjord flag of Norway

Connectable ble Beacon data advertising

I need to add connectable beacon advertising data instead of normal advertising for proximity profile example (NRF52 DK -> PCA10040 ->S132 -> nrf52832).During Advertisement it should show beacon data and in connected state it should stop.

I tried of doing ,but ... (more)

39
views
no
votes
2
answers
Last activity 2017-04-21 14:36:30 +0200 by Constantin

sleep mode during multiprotocol timeslot API

Hi,

I've just started to implement the example

https://github.com/NordicSemiconducto...

for the nrf52. And it is now running so I can send and receive stuff via BLE and at the same time send something via ESB to ... (more)

16
views
no
votes
1
answer
Last activity 2017-04-21 14:32:34 +0200 by Sigurd flag of Norway

ble-sniffer_win_1.0.1_1111_Sniffer.exe fail

hi,all
      i use ble-sniffer_win_1.0.1_1111_Sniffer.exe,but it note as follow:

image description image description

     and Why sometimes not get the connection of the data? Sometimes it stop 60 CONNECT_REQ or else

image description

31
views
no
votes
3
answers
Last activity 2017-04-21 14:19:53 +0200 by run_ar

how to read values for characterstic.

I am not able to read value from characteristics. Always getting isNotify=NO.

48
views
no
votes
1
answer
Last activity 2017-04-21 14:15:24 +0200 by run_ar

not able to call back didUpdateValueForDescriptor method for desritor

not able to call back didUpdateValueForDescriptor method for desritor

28
views
no
votes
1
answer
Last activity 2017-04-21 14:02:06 +0200 by Moritz

FDS save under same id and key

Hey, I want to save stuff to flash under the same id and key which should be no problem as shown in the documentation. But when I save it and retrieve the data only the last saved data is in ... (more)

17
views
no
votes
1
answer
Last activity 2017-04-21 13:47:58 +0200 by Bjørn Spockeli flag of Norway

GPIOs are not reset after DFU

Hi,

We had a power issue with our custom board related to DFU updates. After performing a DFU we were seeing 8mA idle current, and when we had programmed the firmware directly with the JLink Flasher, we were seeing ~500µA ... (more)

30
views
no
votes
1
answer
Last activity 2017-04-21 13:32:50 +0200 by Usman

Tx power Beacon and NRF52

Hi,

I want to know Tx power and duty cycle information of Beacon and NRF52 for the following cases:

In our case NRF52 will be our receiver and Beacon will be transmitter.

Consider NRF52 as an master and beacon as ... (more)

33
views
1
vote
1
answer
Last activity 2017-04-21 13:03:15 +0200 by Bjørn Spockeli flag of Norway

TWI Stuck Bus Recovery

What is the best method for attempting to recover from a stuck TWI bus after init?

I am currently initializing the TWI instance with .clear_bus_init=true but this only happens once during the init.

For example in the past we ... (more)

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