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27,094 questions

622
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1
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Last activity 2014-04-18 10:15:33 +0100 by Nadgob

Minor but important bug at ANCS with iOS

I successfully made an Arduino code using nordic library that gets notification from iOS ANCS.

But some minor bug exists: sometimes i don't get any notification from the device. The only thing that I can do in that situation ... (more)

321
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Last activity 2014-04-18 08:47:21 +0100 by Eugene

DFU error on softdevice 7.0.0

i operated in the ordor below (1)i use batch file s110_nrf51822_7.0.0-3.alpha_program.bat to download softdevice 7.0.0.3 into nrf51. (2)i open ...\s110_nrf51822_7.0.0-3.alpha\Examples\DFU\bootloader.uvproj and download dfu program ... (more)

423
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Last activity 2014-04-18 08:31:35 +0100 by xiewen

How does the IOS app or Android app realtime refresh the RSSI value?

Once connected to the peer, the app will begin with "sd_ble_gap_rssi_start()", and the peer will send RSSI sample to the softdevice, and the SD will back to APP with a "BLE_GAP_EVT_RSSI_CHANGED" . Is this the right procedure to refresh the RSSI ... (more)

865
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no
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1
answer
Last activity 2014-04-18 08:07:10 +0100 by Eugene

why the current consumption is so high during advertising?

Hi, I downloaded the example ble_app_hrs and measured the current consumption, i found it was 1mA while advertising, this is so high. what can i do to make it possible to decrease current consumption while advertising? just like cc2540, during ... (more)

142
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Last activity 2014-04-18 07:42:57 +0100 by Eugene

how can i test a multi-role example in sdk5.2, softdevice is 7.0.0

Hi, i want to use multi-role in new softdivice v7.0.0. so i tested ble_app_hrs example in sdk5.2, then i found nrf51 cannot continue to broadcast when it is in a connection. i try to start adverting when ... (more)

1k
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1
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2
answers
Last activity 2014-04-18 06:00:00 +0200 by jimlin

why it returns NRF_ERROR_INVALID_STATE when calling sd_ble_gap_adv_start()? [closed]

Hi,

The err_code shows NRF_ERROR_INVALID_STATE when called sd_ble_gap_adv_start(). I want to know why it happen, and how to handle it. This happened upon the ble disconnected.

Thanks a lot.

179
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answers
Last activity 2014-04-18 05:52:52 +0100 by Kazuya Osaka

Can nRF24LU1+ support USB Selective Suspend?

Hi, I'm working on a Keyboard&Touchpad project, very similar configuration with Smart Remote 2, so I'm considering to use nRF24LU1+ as receiver's MCU. The receiver will be mounted in Windows PC, so it should support USB ... (more)

219
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2
answers
Last activity 2014-04-18 05:02:42 +0100 by Paul

Is nRF51422 QFAAC0 going to fade out?

We have some product using nRF51r22 QFAAC0. E0 version is replacing C0 now. I just want to know when is Nordic going to stop producing the old version? Thanks

223
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answers
Last activity 2014-04-18 04:24:40 +0100 by xiewen

What is the procedure of scanrsp data reception by the central?

uint32_t ble_advdata_set (const ble_advdata_t *p_advdata, const ble_advdata_t *p_srdata)

If I set the second parameter p_srdata, does it mean passing encoded advertising data and scan response data to the stack together (2*31byte)? my first question is : Is the scanrsp data ... (more)

1k
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no
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1
answer
Last activity 2014-04-18 01:46:50 +0100 by lam

What parameters to use to send more packets per connection interval?

It seems that I can send 2 packets per connection interval but not more on the Nexus 4. When I try to send 4 packets per connection interval, it seems that I run out of TX buffers. But according to ... (more)

296
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Last activity 2014-04-18 01:38:21 +0100 by lam

Python / Ruby libraries

Hi developers,

Just wondering if anyone has worked with a good BLE Python library that he can recommend. I have BLE peripherals that send out notifications. What I'd like to use the Python/Ruby libraries for is connecting to ... (more)

462
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no
votes
1
answer
Last activity 2014-04-17 22:36:45 +0100 by Nadgob

Connect to ANCS without bonding

Hi,

I'm using Nordic 8001 with Arduino.

I successfully connected to ANCS. The problem is that i need another iOS App that scans for services on my bluetooth device and after that i receive an alert to enter the ... (more)

402
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no
votes
2
answers
Last activity 2014-04-17 22:23:14 +0100 by Nadgob

Can't restore Bonding

Hi,

I have a problem at restoring the bonding that is saved on Android EEPROM. I'm using Nordic 8001

I'm using the example from proximity. I modified the services.h using NRFGO to support ANCS and i added ... (more)

422
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no
votes
1
answer
Last activity 2014-04-17 20:23:13 +0100 by Erik Larson

How to load a SoftDevice on nRF51822-mKIT

There is no documentation for the nRF51822-mKIT. How do I load the SoftDevice?

821
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3
votes
2
answers
Last activity 2014-04-16 15:21:31 +0100 by Krzysztof Rosinski

How to read scan response data on S120 central

Hi,

Can you please advice how to read "scan response" data on the central device? I'm still using 1.alpha SoftDevice.

Kind Regards, Krzysztof Rosinski

235
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no
votes
1
answer
Last activity 2014-04-16 14:56:57 +0100 by Umair

nRF24lu1p as HID device

Hi all i am working on Student Response System in which there multiple Transmitter and one Receiver and i want Receiver(nRF24lu1p) to behave as HID device. Can any one provide Example code for nRF24lu1p as HID ????

591
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no
votes
1
answer
Last activity 2014-04-16 12:30:00 +0100 by Jeffery

[nRF51822] Questions for ANCS

Hi As far as I known, ANCS profile is for iOS7 and Alert Notification profile is for Android.

  1. I can find ANCS example (ble_app_alert_notification) in SDK. I followed the SDK document to set up it, then open iOS7 bluetooth to ...

(more)

503
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no
answers
Last activity 2014-04-16 12:02:35 +0100 by Ahmed Gadallah

Writing to the flash during the on air run time!!

Hi guys,

I am new to Nordic and I am using the evaluation kit "pca10001".

I have managed to run the LED BUTTON example which was declared in application note "nAN-36"

Now, I am trying to write to the flash ... (more)

132
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no
votes
1
answer
Last activity 2014-04-16 10:56:54 +0100 by Daniil

there is the product key?

i`he received the nRF8001-DK from mouser. rev 1.4 2013.42 sn 10001954 there is no product key inside it! what is wrong?

410
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Last activity 2014-04-16 10:09:44 +0100 by Kah-Yong Lee

S110 v7 bootloader function

Hi,

I am having problem with the bootloader function of s110 v7. I am able to download the s110 softdevice. My application code was recompile with v7 header files. Able to download it and run my application. So far so ... (more)

1k
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1
vote
3
answers
Last activity 2014-04-16 09:46:56 +0200 by Robin

Bootloader for nRF51422 ?

Hello Everybody,

I need to write a boot loader for nRF51422. Any suggestion for it, reference site ,sample code for quick reference ?

thanks and regards Robin Singh

1k
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no
votes
3
answers
Last activity 2014-04-16 09:46:25 +0200 by Robin

is it possible to Run the nrf51822 DFU program on nrf51422 new version ?

Hi All ,

I am trying to run the nRF51822 DFU sample code(SDK5.1) on nRF51422 new chip set(QFAAE0).but when i am running on nrf51422 i am getting below message and able to jump in bootloader but this ... (more)

2k
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no
votes
2
answers
Last activity 2014-04-16 09:05:16 +0200 by steven

CONNECTABLE MODES - PERIPHERA and CENTRAL

hi, i survey the Bluetooth again , i have some issue about the Connectable mode

  1. Connectable mode.

i see the peripheral connectable setting : PERIPHERAL :

Non-Connectable Mode (BLE_GAP_ADV_TYPE_ADV_NONCONN_IND) Undirected Connectable Mode(BLE_GAP_ADV_TYPE_ADV_IND) Directed Connectable Mode (BLE_GAP_ADV_TYPE_ADV_DIRECT_IND)

On the other hand , On Central ... (more)

837
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1
vote
3
answers
Last activity 2014-04-16 09:04:48 +0100 by steven

how to close the spi interface

hi, now ,i have save the power,so need to close the spi interface at some time. but when i call follow function (hal_spi_disable). it see not close the spi interface,

if any issue about this?


uint32_t hal_spi_disable(SPIModuleNumber module_number ...
(more)

2k
views
no
votes
4
answers
Last activity 2014-04-16 06:22:15 +0200 by FU HUNG KWAN

nRF51822 Heap Size change from 2048 to 1024

Dear Sir,

What is effect, if I change the Heap Size from 2048 to 1024 in arm_startup_nrf51.s file?

On my project, my device (nrf51822) connect iphone with ANCS, sometime I find the device nothing response, I am worried the ... (more)

329
views
no
votes
1
answer
Last activity 2014-04-16 06:20:24 +0100 by FU HUNG KWAN

Master Control Panel log file

Dear Sir,

I open the Master Control Panel log.txt file, I can see Serial port read: 04-3E-13-01-00-00-00-00 and Serial port write: 02-00-00-09

Where can find the full list command?

Because I direct control the COM-Port, I do not how ... (more)

1k
views
1
vote
1
answer
Last activity 2014-04-16 06:19:51 +0200 by FU HUNG KWAN

CPU lock-up detected

Dear Sir,

I used nRF51822, I found sometime the program reset itselft. Then I made a test program to send out the "RESET REASON"by BLE message. I found the reset reason = 0x1000C. refer to "AIRCR.SYSRESETREQ"& "CPU lock-up" detected ... (more)

190
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answers
Last activity 2014-04-16 03:15:24 +0100 by Chris

Undergraduate Student in Need of Advice

Hello everyone,

I am a college engineering student working on a circuits project, and I need some help. The project is to design a proximity device that sounds an alarm when a transmitter is out of range. The device includes ... (more)

736
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no
votes
2
answers
Last activity 2014-04-15 23:05:25 +0100 by Tiit Rätsep

SD120 central device RSSI problem

Hi,

We are developing a pair of devices - one central and one peripheral at the moment and we would like to be able to read the value of RSSI on both of them on demand. The way I want to ... (more)

1k
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no
votes
12
answers
Last activity 2014-04-15 21:18:38 +0100 by mtsunstrum

S120 Multilink Central app connects, then very quickly disconnects (Reason: BLE_HCI_CONN_FAILED_TO_BE_ESTABLISHED)

I have taken the S120 app, and am trying to have it connect to an external peripheral (not the provided S120 Multilink Peripheral app)

The S120 app successfully discovers the peripheral's advertising, and proceeds to establish a connection, and ... (more)

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