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11,044 questions

3
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Last activity 2017-04-25 01:49:48 +0200 by stefano.luna

Problem with SAADC examples for audio sampling

I am using nRF52 pca10400 and I would sample some audio signal for short periods of time, but I found a lot of difficulties with the SAADC example from sdk 13, since if I put a value greater than 126 ... (more)

5
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Last activity 2017-04-25 00:58:05 +0200 by MarcF

Any way to put system into "OFF" state in hard fault handler with SD enabled?

Long title, but basically sums it up - is there any way to put the nRF51 into the off state from within the hard-fault handler if the soft-device was enabled prior to the fault? The complication is that the soft-device seems ... (more)

13
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1
answer
Last activity 2017-04-25 00:38:42 +0200 by Wojtek flag of Poland

Can I create Characteristic with Notification only, no Read, no Write

Can I create Characteristic with Notification only, no Read, no Write

I can remove the //char_md.char_props.write = 1; and only the Read and Notify Properties show up in MCP (or the iPhone)

When I comment out the char_md.char_props ... (more)

11
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Last activity 2017-04-24 23:25:52 +0200 by stefano.luna

Problem with example fpu_fft sdk13 nRF52832

Hi, i'm using keil and i would like to run the fpu_fft example to perform a fft. The example works if I set 128 or 256 as number of input vector data as you can see in the picture ... (more)

25
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1
answer
Last activity 2017-04-24 22:44:44 +0200 by normanfust

nrf51822 - jlink 0.76V

Hello,

I connected the nrf module to jlink as described:

• vdd(nrf)-----3.3V    
• gnd(nrf)-----gnd
• SDO(nrf)-----SWDIO(jlink)
• SCLK(nrf)-----SWCLK(jlink)
• 3.3V------VTref(jlink)
• gnd------gnd/pin20(jlink)

After executing jlink.exe I receive the following VTref ... (more)

6
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Last activity 2017-04-24 22:41:24 +0200 by normanfust

Eclipse IDE can't build

My setup is based on a jlink clone and yunjia module nrf51822 and nRF51_SDK_10.0.0_dc26b5e. I am following this tutorial successfully till the section Enable auto discovery of symbols, include paths and compiler settings. After rebuilding the project I ... (more)

15
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1
answer
Last activity 2017-04-24 22:11:21 +0200 by Emil Lenngren flag of Sweden

Is it possible to have passkey with Just Works bonding

I noticed some suggestions to add Static Passkey.

I have 10040 nrf52832 sdk13.0.0 s132

The server has no IO, so cannot enter passkey from it. 1) Is there an example to add PIN to the server, even though ... (more)

19
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no
votes
1
answer
Last activity 2017-04-24 22:02:58 +0200 by endnode

NRF52 and beacon ( NRF51) example

Hi,

Is there any ready made app of NRF52 and NRF51 ( beacons), where beacons are communicating with the NRF52 and based on some nordic app for PC we can view that how many beacons are connected at the moment ?

49
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1
answer
Last activity 2017-04-24 21:56:32 +0200 by Dima

Bootloader without SoftDevice

Hello

I am building bootloader. I do not use Softdevice and used example from this topic. Bootloader must read FW from uSD card, update flash and jump to application. uSD card is connected to SPI0 of nrf51. SPI1 is used ... (more)

18
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Last activity 2017-04-24 21:39:31 +0200 by Vijyendra

trying to update date for BLE device but getting this error "Error changing notification state: The request is not supported."

trying to update date for BLE device but getting this error "Error changing notification state: The request is not supported."

Trying to write date: on nRF52 device calling below write method:

converted this date "CD2EFC59 " hex data to nadata and ... (more)

33
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1
answer
Last activity 2017-04-24 21:38:57 +0200 by Aleksander Nowakowski

Automated testing using NRF connect: How to read phone's service characteristics?

I am creating a BLE peripheral device which I want to test using the automated testing feature of NRF Connect. I have connected a android phone to my windows PC and the phone has NRF connect app installed in it ... (more)

8
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answers
Last activity 2017-04-24 20:52:25 +0200 by NateABC

Bonding information lost after DFU OTA update SDK 10.0 SD 8.0

Hi,

We are currently facing this issue, where after a DFU application firmware update (or bootloader update) the bonding information gets wiped out.

We are using a custom board as peripheral based on NRF51822, with Soft Device S110 8.0 ... (more)

6
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answers
Last activity 2017-04-24 20:32:23 +0200 by pbirkner

How can I detect the state of an LPCOMP input?

I am programming a device with a NF52 that uses a hall effect switch o enter/exit sleep mode when BLE is in advertising mode. When connected, It will generate a separate BLE notification for the condition that a magnet ... (more)

73
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5
votes
5
answers
Last activity 2017-04-24 19:43:12 +0200 by lesher

CC2451 as proximity with nrf52832

Hi, Can I use TI (cheap module 2451) as experimental blinky with central NRF52832.Don't need send button command , only UUID (TI:FFE0) check.It is possible?

Thanks

4
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answers
Last activity 2017-04-24 18:48:54 +0200 by Jack

nrf905 433 to 915 rf output

I purchased a bunch of ptr8000 boards off ebay from china to do some testing of the nrf905 without realizing they were setup for 433mhz, and I need 915mhz. Looking at the datasheet reference design, it appears there are just ... (more)

9
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answers
Last activity 2017-04-24 18:47:26 +0200 by Renix

What is the passkey for gls example, where is it set

What is the passkey for gls example, and where is it set

I am using SDK13, 10040 nrf52832 s132

Any help appreciated

7
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answers
Last activity 2017-04-24 18:40:15 +0200 by Ross Belloni

CMSIS_DSP bilinear interpolation help

I'm looking for an example of how the pData data table is configured in the arm_bilinear_interp_instance_f32 structure.

I have read the online notes which I've copied below, but I don't understand how to implement this

The instance ... (more)

14
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answers
Last activity 2017-04-24 18:05:23 +0200 by Gordon

nRF52 IPv6 SDK/examples

Hi,

I'm looking at adding IPv6 connectivity to my nRF52-equipped product. When I last looked a year ago, things seemed to be moving along very quickly. However, looking again at how to get started, I only see this SDK ... (more)

19
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Last activity 2017-04-24 17:19:23 +0200 by MANGO

Plans for the AirFuel stuff?

Hi, I'm interested in the nRF5 SDK for AirFuel.

I have received a task to replace parts in a product which formerly used wireless charging and the CSR BLE chip.

I think choosing the nRF51 or nRF52 that support ... (more)

8
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no
answers
Last activity 2017-04-24 17:10:22 +0200 by gian

Blinky_freeRTOS linker issues

Hi, I am working with the example Blinky_freertos present on the SDK_13.0.0_04a0bfd. I have built the example w/o issues in compilation but I have the following problems with the linker:

  1. undefined reference to `nrf_drv_clock_lfclk_request'

  2. undefined reference to ...

(more)

19
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answers
Last activity 2017-04-24 16:35:26 +0200 by Mario Amigot

NRF52840 + SDK 13.0.0 (S140): MULTI-ROLE NOT WORKING & IAR COMPILER OPTIMIZATION ISSUES

Hi, I’m using nRF52840 with softdevice s140 and nRF5 SDK v13.0.0 and I’m having some issues regarding the optimization set up for the IAR Compiler (IAR Embedded Workbench v7.70.1). The application that I’m ... (more)

20
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1
answer
Last activity 2017-04-24 16:18:42 +0200 by Hung Bui

NRF51 simple vector deflection function?

I use STM32F4+nRF51822 through the SPI interface. I want to achieve nRF51822 DFU with SPI operation, now upgrade the simple LED to work properly. But can not work when using Gazlle. I know it is because the interrupt vector ... (more)

9
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answers
Last activity 2017-04-24 15:54:15 +0200 by Raju

error is observed in both sd_ble_evt_get and ble_ancs_c_init

for ble_app_ancs_c_s130_pca10028 example of sdk11,s130 version 2.0.0

The preferred RAM,ROM and UUID COUNT is shown below

FLASH (rx) : ORIGIN = 0x0001B000, LENGTH = 0x25000 RAM (rwx) : ORIGIN = 0x20002790, LENGTH = 0x2790

ble_enable_params.common_enable_params.vs_uuid_count = VENDOR_SPECIFIC_UUID_COUNT;

VENDOR_SPECIFIC_UUID_COUNT= 4;

with th ... (more)

17
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answers
Last activity 2017-04-24 15:50:06 +0200 by sword

How to make 51822 not discoverable to phone

Hi, I have 52832(ble_app_multilink_central 12.2) which is connected to 5 51822 (experimental_ble_app_blinky) modules. How to make 51822 not discoverable or not connectable to phone/tablet(android/ios )?

22
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votes
1
answer
Last activity 2017-04-24 15:45:56 +0200 by Torbjørn Øvrebekk

Unpredictable behaviour of RTC2 on nRF24le1

I found a problem using the RTC2 on the nRF24le1 which i dont know how to solve it.

I am using the RTC2 on the master to generate a TICK interrupt exactly every 1s. With the formula on page 97 ... (more)

35
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votes
1
answer
Last activity 2017-04-24 15:44:32 +0200 by Hampus

Using nRFgo Studio when producing 18000 units

I need to do the following when assembling a device with nrf-52 at the factory.

  • Add firmware onto device
  • Add a unique serial number for the device
  • Print a sticker and add on the outside of the device box with ...
(more)

23
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no
votes
1
answer
Last activity 2017-04-24 15:32:57 +0200 by Sigurd flag of Norway

Nrf52840 Advertising Paket Size

Hello is this possible to send the 255 byte in the Advertising Paket ? if yes then do you have any example ?

Best Wishes

Ati

101
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no
votes
1
answer
Last activity 2017-04-24 15:32:06 +0200 by Jørn flag of Norway

How can I disable the GPIO irq

hi how can i disable the gpio irq, can how can i enable it.

and if i disable one pin irq not effect the other one?

Thank you very much.

71
views
2
votes
2
answers
Last activity 2017-04-24 15:28:16 +0200 by akshaey

pwm hardware individual loading mode nrf52

Please can anyone help me on how to use(program) PWM hardware with individual loading mode? My goal is to control 12 LEDs individually with different duty cycles and playbacks using pwm hardware which has 12 outputs to make a ... (more)

21
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1
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answers
Last activity 2017-04-24 15:17:38 +0200 by peter237

How to read Power Profiler Kit Measurements

Hi,

I have a beacon that uses 4 AA batteries, each has 1.5V and 2600 mAh. When connecting the board to the PPK I get the attached measurements when doing a lot of scanning and advertising:

image description

It is weird ... (more)

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  • Latest user: Opal Akers
  • Resolved questions: 9161
  • Unanswered questions: 2522
  • Total questions: 21630