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27,730 questions

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Last activity 2015-04-22 10:47:15 +0200 by Bhuvanchandra DV

nrf51 DK board not detected !

Hi

Recently we bought NRF51 DK board. Initially when i connect the nrf51 DK board to PC via USB it mounts JLINK driver and on IF/BOOT button it mounts BOOTLOADER drive. Updated the bootloader firmware 'ble_default_bootloader_app.hex' (initial FOTA ... (more)

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1
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1
answer
Last activity 2015-04-22 10:35:18 +0200 by Petter Myhre flag of Norway

Beacon Service+Info, How can I use both data?

I want to displayed Service and Info of Beacon. in App(Master Control Panel)

Now, State of my source is only Service displays.

What can I do to fix it? How do I fix my source?

I would like to ... (more)

441
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no
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1
answer
Last activity 2015-04-22 10:31:05 +0100 by Aryan flag of Norway

SPI master error [closed]

I've just trying to get SPI working, everything is compiling OK but when initialising the SPI, when the line below is hit, /* Clear waiting interrupts and events */ p_spi_instance->p_nrf_spi->EVENTS_READY = 0;

I end up in here: void app_error_handler(uint32_t ... (more)

311
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2
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1
answer
Last activity 2015-04-22 09:29:03 +0100 by shibshab

Identify peripheral based on advertised data

For my application I need to identify the peripheral source advertising packets are coming from. How is this best done with BLE and SDK 7.1? I would prefer not to set a a different device name for every source.

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1
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1
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Last activity 2015-04-22 08:34:44 +0200 by RK flag of Singapore

what is pstorage?

What is the role of pstorage exactly?

In what situations do you use pstorage?

Where is pstorage the area occupied by memory?

257
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2
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3
answers
Last activity 2015-04-22 02:16:19 +0100 by shinho

how to upgrade nrf51822-beacon kit using nrf51-dk

Hi, I bought the nrf51822-beacon kit and nrf51-dk including TC2030-CTX-NL connector for connecting them each other through the Debug out pin on the nRF51-DK.

I can't find right source code and don't right compile way using the Keil-uV ... (more)

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3
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1
answer
Last activity 2015-04-21 18:53:52 +0200 by mnhs

How to compare power consumption of 433 MHz and 2.4 GHz?

When i google for power consumption 433mhz 2,4ghz and similar most results tell me that 433MHz consumes less power... but when I look at specifications of explicit chips/modules I can't seem to find a 433MHz module that ... (more)

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1
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1
answer
Last activity 2015-04-21 18:34:57 +0100 by mnhs

nRF51 DK - Keil licensing [closed]

Hello, I've just purchased an nRF51 DK and installed the SDK. I have Keil uVision 5 installed from a previous project, with a "Freescale Only" license key. This seems to be keeping me from compiling for Nordic; I get ... (more)

257
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3
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2
answers
Last activity 2015-04-21 16:52:29 +0100 by David Edwin

To add firmware revision in advertisement packet

Hello Everyone,

I want firmware revision to be added in advertisement packet how can i do it . is it ok to add it to manufacturer data or it is nordic proprietary .

i have done it like this. to add firmware ... (more)

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2
answers
Last activity 2015-04-21 16:43:42 +0100 by Glenn

convert softdevice 110 example project to softdevice 310?

Hello,

I know I have seen the topic on the forum, but can not find it. What changes need to be done to a example project designed for a softdevice 110 to convert it to a softdevice 310?

Thank You, Glenn

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votes
2
answers
Last activity 2015-04-21 15:43:50 +0100 by Texton

nRF51 crashes on startup in Eclipse?

Hi all,

I've spent 4 days now (!!) on getting a "Hello World" project to work in eclipse with GCC. I guess something around the startup-code is setup wrong in my very simple project but I don't know what ... (more)

534
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5
votes
2
answers
Last activity 2015-04-21 15:12:02 +0100 by Stefan Birnir Sverrisson flag of Iceland

Logging realtime sensor data to flash

I would like to know if it is possible to log realtime sensor data to flash while advertising. I would like to have a device which transmits real time ECG data over ble UART to an android device when in ... (more)

662
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no
votes
1
answer
Last activity 2015-04-21 14:52:59 +0100 by guillermo

nrf51822 not detected

Hello I have a nrf51822 mbed kit PCA 10024 V1.0.0. When I connect the kit to the PC (Windows 7 64 bits) the Mkit enumerates as an MSD named MBED:

I updated the firmware to version 2018following the ... (more)

544
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2
votes
1
answer
Last activity 2015-04-21 14:19:37 +0100 by Stefan Birnir Sverrisson flag of Iceland

DA14580 4.9 mA RX / TX at 3 V at 0 dBm output power

This is factor 2 to what I read here. How can they achieve this? Where is the trick? http://www.dialog-semiconductor.com/p...

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votes
2
answers
Last activity 2015-04-21 13:43:30 +0200 by Stefan Birnir Sverrisson flag of Iceland

Reading ADC value from analog input

Hello, I'm using nRF51822-mKIT for a research.

image description

To verify ADC readings from analog input, I've connected P0_5 to GND and ran the following code:

uint16_t adc_result;    

NRF_ADC->INTENSET = (ADC_INTENSET_END_Disabled << ADC_INTENSET_END_Pos);     /*!< Interrupt enabled. */

// config ADC
NRF_ADC->CONFIG = (ADC_CONFIG_EXTREFSEL_None << ADC_CONFIG_EXTREFSEL_Pos ...
(more)

534
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1
answer
Last activity 2015-04-21 13:20:28 +0100 by Hung Bui

concurrent characteristic write and notify

Hi,

I was just wondering what the sequence of events would be in the following scenario:

A S110 peripheral device (GATT server) has a characteristic with write access and notifications enabled (by the GATT client). The GATT client performs a ... (more)

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3
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2
answers
Last activity 2015-04-21 13:13:30 +0100 by Stefan Birnir Sverrisson flag of Iceland

How to program the Smart Beacon Kit.

I have looked over the entire site and can not figure out what is needed to change the Smart Beacon Kit firmware and uploaded it to the beacon.

Is there a way to recompile the source firmware (what tools do ... (more)

996
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votes
1
answer
Last activity 2015-04-21 13:05:06 +0100 by Martin Børs-Lind flag of Norway

How much mechanical stress can the nRF51288 ( PTR5528 ) take? [closed]

For my project I would like to use this bluetooth module: http://freqchina.en.alibaba.com/produ...

Does it resist 4 bar pressure? Does it resist circular motion > 100 rounds/second (radius 7cm)? (And how does that may effect the bluetooth signal..?)

319
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2
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Last activity 2015-04-21 13:04:23 +0100 by Hung Bui

vendor UUID

I am trying to connect to a peripheral through s120 central and vendor has a 128 bit fixed UUID

I am trying to add it on central using sd_ble_uuid_vs_add(...,...) but it is not working and everytime I am getting charachtreristics ... (more)

300
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no
votes
1
answer
Last activity 2015-04-21 12:36:50 +0100 by Stian flag of Norway

Information on Taiyo Yuden EYSFCNZXX BLE module [closed]

Is anyone using the third-party BLE module from Taiyo Yuden? If so, where did you find the recommended footprint?

Taiyo Yuden's website only gives very limited information about the module. I have requested further info through the form on ... (more)

370
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votes
2
answers
Last activity 2015-04-21 12:03:36 +0100 by Stanislav

PWM Motor control

Hello, I am working on an application based on the "Motor control example". However instead of just setting two different values for the duty cycle I am trying to either increase or decrease it for every button press. I am ... (more)

205
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no
votes
1
answer
Last activity 2015-04-21 10:55:04 +0100 by Petter Myhre flag of Norway

How to detect Connection or link loss from peripheral

Hi, I would like to know how I can immediately detect when a connection link is loss either from the central or peripheral. I need to know which error or notification to look out for when a data exchange fails ... (more)

64
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1
answer
Last activity 2015-04-21 10:01:52 +0100 by shibshab

ble_app_template with S120

Hi there,

What changes need to be made to the ble_app_template example so that it will succesfully run as a central (with S120).

Thanks

137
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3
votes
1
answer
Last activity 2015-04-21 08:32:10 +0100 by Håkon Alseth

Verify a unique identifier

Hello everyone,

I'm developing a security scheme in which the firmware verifies that the nRF51822 is the same as the one in the factory to which the firmware was installed, i.e. whether it's running on authentic hardware ... (more)

304
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votes
1
answer
Last activity 2015-04-21 01:03:47 +0100 by bishop

s130 peripheral_template example [closed]

Hello! I'm trying to use s130 as peripheral. I flashed nrf51822 with s130 stack. Opened peripheral example and build it with .ld file for s130. After it I flashed this project into the nrf51822. Started nrf51822. in Nrf Master ... (more)

87
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2
votes
1
answer
Last activity 2015-04-20 21:16:11 +0100 by John DeWitt flag of United States

can the fn advertising_start be called in the main loop?

we have a 2 chip soln. nrf for Ble, Atmel for main application. config data is located in the Atmel part. Config data also has BT Device name, ADDR, Adv Params etc.

I need to start advertising only after i ... (more)

424
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votes
3
answers
Last activity 2015-04-20 20:50:34 +0100 by PW flag of Poland

[nRF51422] Flash write and background scanning [closed]

Hello. Can I use flash_write example functions (nrf_nvmc_write_byte, nrf_nvmc_page_erase) after open channel on background scanning? Regards, PW.

272
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2
votes
1
answer
Last activity 2015-04-20 17:46:01 +0100 by David

J2 debug connector on nRF51-Dongle

Hello--

The nRF51-Dongle has these 20 pads which I think correspond to a debug port:

image description

On the schematic, it looks like these feed into JTAG signals:

image description

My question is: can I solder a connector onto these pins and use the ... (more)

114
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1
vote
1
answer
Last activity 2015-04-20 16:57:56 +0100 by Torbjørn Øvrebekk

PWM Library - glitch definition/status?

What exactly are the "glitch" issues with the PWM master library? I see there have been some recent updates, but no clear indication as to what issues remain or have been resolved? I take it the 4 channel (non-glitchless?) version ... (more)

361
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no
votes
1
answer
Last activity 2015-04-20 16:39:31 +0100 by Håkon Alseth

GZLL host not responding to more than 3 pipes

I am trying to set up a GZLL star network on the 51822. I understand that a single GZLL host can support up to eight devices but whenever my host attempts to communicate with more than 2 devices each communicating ... (more)

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