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11,502 questions

14
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1
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Last activity 2017-05-26 00:59:54 +0200 by RK flag of Singapore

nrf2401+ replacement with NRF52832 via SPI

I have an arduino mega based design working with nrf24L01+ via SPI. As certification is the next step, I found a NRF52832 based module that would meet all certification requirements. Is it possible to just drop that module in and ... (more)

8
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answers
Last activity 2017-05-26 00:18:04 +0200 by Kishore

On connecting the nRF52 dk board to the PC should two of its LED's glow?

The board which I have shows only 1 LED glowing on start up. LED 1 is not blinking. Should I have to change the board?

7
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answers
Last activity 2017-05-26 00:06:02 +0200 by Starbuck

LMP Response Timeout - experimental_ble_app_multiperipheral_pca10040_s132

I’m getting an LMP Response Timeout disconnect reason about 50% of the time when trying to get the nRFConnect App running on either an Android Pixel or iPhone 7 (running the latest OS versions) to connect to the pca10040 ... (more)

41
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no
votes
2
answers
Last activity 2017-05-26 00:00:49 +0200 by ta2

code of protocol stack which part of the Protocol I can modify?

Hi there, I need to add more the function based on Bluetooth, and I need the better security of the function. However, I do not want others read flash data freely and I hope only through my certification could the ... (more)

10
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answers
Last activity 2017-05-25 22:35:56 +0200 by Julie H

Re-work hints for QSPI flash on PCA10056

The design I'm working on will tentatively use "Original SPI" (like "Original Coke" ...), so I started cutting up the QSPI bridges to disconnect DIO2 and DIO3 (which are also other things ...) prior to pulling them up to Vcc.

Has ... (more)

160
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1
answer
Last activity 2017-05-25 21:55:01 +0200 by LulaNord

nRF52 development kit by OHTCOM

Hi, I'm not sure if this forum support that board but if YES, can You explain how to upload some program on that board. I think that process is little bit different that on original board. Thanks.

15
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1
answer
Last activity 2017-05-25 18:22:55 +0200 by endnode

Flashing and Debugging nRF52840 using FTDI

Hi,

I am currently working on nordic PDK. And I am interested in flashing nRF52840 through FTDI SWD interface. I want to know whether it is possible?

If yes, what will be the process of flashing through FTDI to nRF52840 ... (more)

10
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answers
Last activity 2017-05-25 18:21:50 +0200 by Shreyas Shivalkar

remote dfu insufficient resources

image description

I am using nrf52832 BLE chip(10040), sdk 12.2, softdevice s132 with sample example boot-loader code(dual bank).

I modified the boot-loader code for button-less DFU.

The dfu failed with remote dfu error ie remote dfu insufficient resources.

Please ... (more)

13
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1
vote
1
answer
Last activity 2017-05-25 18:18:20 +0200 by endnode

Is it possible do a DFU to switch between SDK versions?

Hi all,

I am experimenting with the DFU to switch between SDK versions from SDK12 to SDK13 and SDK13 to SDK12

Is it possible if I send a whole imagen of SD+BL+APP to switch between SD12+BL12+app12 ... (more)

18
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1
vote
1
answer
Last activity 2017-05-25 18:12:18 +0200 by endnode

Relay Defination and Question

Hey, Just had a quick question... I was doing the Relay example and I don't totally understand what a "relay" is. Can you explain what the purpose and usage of relay is for?

On the same note, if my ... (more)

73
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votes
2
answers
Last activity 2017-05-25 16:52:34 +0200 by Ricardo

Read or change nRF51 mac address on Zephyr

Our project uses a Raspberry Pi compute module 3 connected via UART to 2 nRF51822. I'll go through what is working and than describe the issues I'm having

What's going on without issues:

  • The 2 nRF51822 are ...
(more)

18
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no
votes
1
answer
Last activity 2017-05-25 15:11:43 +0200 by Jon Helge flag of Norway

nRF24LU1+ HID programming descriptor question.

HI

I'm studying how to control mouse and keyboard via HID with nRF24LU1+ module referring to firmware of nAN-22.

Even though I set Descriptor as appropriate for mouse and send dates to USB, it has no response. I have ... (more)

34
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answers
Last activity 2017-05-25 14:58:46 +0200 by phst36

Is there a DeviceFamilyPack supporting the pca10056 that i can use for debugging in Eclipse?

From what i found out there isn't, but maybe i am blind..

18
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Last activity 2017-05-25 12:44:51 +0200 by Mitch996

nrfprog returns wrong family error when programming nrf52840 on a custom board

Hello, I get the

"ERROR: The --family option given with the command (or the default from nrfjprog. ini)

ERROR: does not match the device connected."

message after entering pretty much any command, erase, program etc., for example, this one:

nrfjprog ... (more)

27
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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)

34
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answers
Last activity 2017-05-25 10:46:59 +0200 by Roger flag of South Africa

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)

8
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no
answers
Last activity 2017-05-25 10:21:43 +0200 by Nick

Store data in flash with NRF52832 and MBED and GCC

Hi,

I'm trying to use an existing NRF51822 mbed codebase on a new NRF52832 product and am having some issues.

First of all, it seems that I can't use mbedlib, but need to update to mbed-os because BLE ... (more)

20
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answers
Last activity 2017-05-25 08:27:21 +0200 by san27deep

Interface BLE51822 with FreeRTOS

Hi, I want to interface BLE module with freeRTOS. Does nordic provide BLE stack for freeRTOS? and if yes then is it opensource? or is there any standard BLE stack which can be modified to work with freeRTOS and BLE51822?

37
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votes
1
answer
Last activity 2017-05-25 08:25:20 +0200 by Wojtek flag of Poland

Why can't I keep using S110/120 devices on nrf52840?

It appears that I must use S134 and S140 etc. Is it backward compatible? By that I mean I keep using S110/120 at the cost of not being able to utilize some of the latest feature?

7
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Last activity 2017-05-25 07:10:43 +0200 by satheesh

how to enable and disable softdevice s110 as based my customization

hi, i need to do long process and more flow of functionality that all could stopped by softdevice. so i need to enable and disable soft device. could it could affect my timer2, RTC1,UART0,Pstorage_nosd.c?

please help me any one

6
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answers
Last activity 2017-05-25 07:02:05 +0200 by satheesh

pstorage erase and read and write with sofdevice issue

hi

here i have use block size 16 byte and block count 5096. this is my start address 0x27000

i have tried to clear 79 pages.

and read data from flash with specific block.

write data to flash memory.

it ... (more)

10
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votes
no
answers
Last activity 2017-05-25 06:46:21 +0200 by satheesh

TIMER2 issue with soft device

i could not run timer2 with soft device,. if i start initiaize TIMER2 the bluetooth advertise has disabled. i need this timer to timeout my flow function. i think softdevice has stopped my function. my execution timeslot is high compare ... (more)

21
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answers
Last activity 2017-05-25 03:48:11 +0200 by Paul

what is result err code 3 in app_twi_callback_t

I am getting result code 3 after app_twi_schedule in the call back. What does that mean? Thanks Paul

17
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answers
Last activity 2017-05-25 02:49:03 +0200 by Chae

ble_app_uart packet not sent more than 278 packets

Hello, Help me, please.

I am testing ble_app_uart. Softdevice is S130 and SDK is nRF5_SDK_12.2.0_f012efa.

My development board is Waveshare's NRF51822 Eval Kit.

When I test the ble_app_uart firmware, I cannot send more than 278 packets to ... (more)

10
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no
answers
Last activity 2017-05-25 02:03:37 +0200 by Taku

DFU Security. I do not know the BLE Event

Hi;

I do not know the BLE Event(DFU bootLoader/SDK Sample) so I will ask you a question.

The environment using is below.

SDK v10.0.0 (Sample code/dfu_transport_ble.c)

SoftDevice S110&S120(v8.0.0?&v2.1 ... (more)

28
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answers
Last activity 2017-05-25 01:59:16 +0200 by Dajgoro

Building sdk12 examples

Hi

So far I have been using the examples from Keil 5 pack installer. Now I tried loading some from the SDK example folder and I have issues with includes. What do I need to adjust to have those includes ... (more)

33
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7
votes
1
answer
Last activity 2017-05-25 00:19:50 +0200 by P879

Unable to Send Messages NRF52 BLE Central Custom Device

Currently I am using the NRF52 device to connect with a custom peripheral. The current goal I am trying to reach is toggling an LED by sending the command 0x8900 through Service UUID 0x0001 with Characterisic ID 0x0002.
This is ...
(more)

42
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votes
1
answer
Last activity 2017-05-24 23:48:45 +0200 by rct42

NRF52 Timing Accuracy

I'm developing an accurate and low drift millisecond-resolution timer on the NRF52. I'm limited to the resources on the NRF52 itself. Details of the system:

  • Initialise TIMER0 to be clocked from the main crystal (16MHz 10 ppm, using ...
(more)

32
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-1
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answers
Last activity 2017-05-24 23:11:08 +0200 by priya

How to prgram nRF beacon kit as peripheral with KEIL and nRF DK52. I cannot see the beacon kit to be programmed. KEIL says DLL error

How to prgram nRF beacon kit as peripheral with KEIL and nRF DK52. I cannot see the beacon kit to be programmed. KEIL says DLL error. Please let me know thw KEIL settings to see the beacon as a device

11
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answers
Last activity 2017-05-24 22:19:08 +0200 by Abraão

nRF5 SDK 12.3.0 Eddystone on nRF51822 beacon

Hi,

I've seen that SDK 12.3.0 contains a new version of the application sample using the Eddystone protocol for BLE. I would like to know if this version is compatible with nRF51 chips as it was said ... (more)

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