11,853 questions

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why app preserved data are lost after DFU

I configured the bootloader to preserve one page of data ( I configured #define CODE_PAGE_SIZE 0x0400 on the bootloader project (it's the only configuration i made)

my userdata are located on the page above the bootlaoder (0x0003BC00). I can read ... (more)

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nRF51 - LE ACL or Baseband Packet

Hi,

Is there any method that I can use to get the LE Packet or the Baseband packet ( With Access Address) passed onto the application? (Using S110 or S130)

Thanks

27
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1

DFU not working hrs_freeRtos w/ log

Log 2016-02-10 17:56:38.txtPorted DFU to hrs using FreeRtos and I keep getting GATT ERROR after the image file is opened.

Looked at the DFU how to port. Looked at the ANCS & DFU question and verified all ... (more)

15
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Automatically disconnection iOS

I'm using the NUS service for a sensor design. It was working fine for me. I don't know what is changed, but I experiences the next problem.

When I connect my sensor using an iOS app (own developed ... (more)

24
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HR with pairing over NFC

Hi,

I am trying to get the experimental NFC example "HR with pairing over NFC" to work. I can read the tag correctly with an android phone : the NDEF message is correct and the chip starts to advertise. I confirm ... (more)

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DC/DC power consumption peaks after TX

Hello!

I have PCA10006 with revision QFAA nRF51422

I am testing the buck converter's ability to make the system consume less power when transmitting. Example is ant/broadcast_tx from SDK 11 with S210 ver. 5 soft device.

Seems like ... (more)

14
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nrf52832 RTC & debugger behaviour

Hi I see a very strange behaviour: I am working with RTC module, configured to interrupt every 33 ms. When I work with the debugger connected, I see that I get the interrupt every 33ms as expected. But when I ... (more)

40
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1
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1

Large data transfers on nRF52 - new possibilities with BT 4.2? IoT SoftDevice? Timeslot API?

Hi,

I have already read several posts and articles about how to maximize data throughput on Bluetooth Smart (like sending multiple Notify packets with 20 bytes of data). This will not be sufficient for our next project.

We want to ... (more)

5
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how to measure the coin cell battey voltage in real

Hello Everyone,

I am trying to measure the (3v)battery voltage by having proximity example as reference but intially it is showing 100percent later it is going to 13(percent) voltage approxmiatelry (after 120seconds) i dont understand why it is ... (more)

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LDO vs DCDC (nRF51822)

I am not quite certain what the advantages/disadvantages are of using LDV vs DCDC if you are using an external regulator. In my case i use a LiPo battery outputting ~4.2V so i need to drop the voltage ... (more)

8
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Need to enable reset

Hi all,

there is a nice section in here already about enabling the Reset input (P0.21). Unfortunately the link to the relevant infocenter docu is missing.

Could you tell me how to enable Reset so that my reset button ... (more)

58
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Hello, I am currently working on a hard metal project involving Nordic product with Bluetooth.

I have to implement Bluetooth Smart for a bare metal project and I've already mostly done the l2cap-le and mostly hci parts. But I ... (more)

10
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Where to find SoftDevice S120 V1.0 ?

Where can I find softdevice S120 V1.0? Im working with an old chip (rev 2), and I have problems with newer softdevices. Thank you. Regards.

34
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How to work with twi event handler?

Hi,

At the moment I try to communicate with an external EEPROM. Writing to the EEPROM seems to work. But when reading back the written data, the program breaks... :-(

Is the twi event handler called for every byte, I want ... (more)

19
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Bootloader can't switch to application using mergehex tool

Hi, In my project I need to program softdevice+bootloader+application at a time, for these previously I used mergehex tool to merge Softdevice, Bootloader,application and app_valid_setting_appy.hex and created single hex file and programmed by using nrfjprog.exe ... (more)

13
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1

Wireless DFU with gcc - Redbearlab BLE Nano

Hi, I use nrf51822 with SDK9.0, gcc with makefile, and soft devices S110 or S130 on Windows. I would like to learn how to load firmware using the wireless DFU app from within the nRF Toolbox. I have been ... (more)

56
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iOS (or C) DFU Library

Any chance someone have develop a iOS (Objective-C / Swift) library to wrapping Nordic DFU Protocol?

I'm aware of the availability of the source code of nRFToolBox (https://github.com/NordicSemiconductor/), but I'm agree with @jacobrosenthal (https://github.com ... (more)

311
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all examples softdevice don't work on nRF52832

Hi all.

I am now testing nRF52832 preview DK examples work with softdevice on MDK-ARM version 5.15 I use nRF52832 preview DK and nRF Toolbox and Termite tool. I hope:

->nRF Toolbox(UART app) detected nRF52832 preview DK ->nRF ... (more)

35
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1
vote
2

Little problem with send data to BLE

Good afternoon.

I´m using nrf51-dk with SDK 9.0.0, s110 softdevice and uart nordic app on mobile. I have a program in my nrf51-dk that it sends and receives data between nrf51-dk and mobile device.

I want to ... (more)

20
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1
vote
1

nRF52 Preview DK RF Connector

What is the RF Connector on NRF52 Preview DK? It looks like U.FL/IPEX/MHF but it does not have the central pin. I want to find a converter to SMA. Could you please suggest the model and specification ... (more)

18
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1
vote
1

nrf52832 gpio with pullup current

Hi

I have noticed that when I configure any GPIO with "NRF_GPIO_PIN_PULLUP" option, the CPU current is raised by approximatly 200 uA. (It doesn't matter if the GPIO is configured as input or output). Is this the default behaviour ... (more)

11
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1
vote
1

soft device threading - when and what are calls safe?

I would like to learn more about when it is safe to invoke soft device methods and when it is not. For example, are the following 'allowed' to make soft device calls to update a characteristic? If not, what is ... (more)

44
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1

nrf51 lpcomp doesn't work

Hi, this is how I initialize and enable LPCOMP

   nrf_drv_lpcomp_config_t lpcompconfig = {
{NRF_LPCOMP_REF_SUPPLY_SEVEN_EIGHT, NRF_LPCOMP_DETECT_CROSS},
APP_IRQ_PRIORITY_LOW,
NRF_LPCOMP_INPUT_7};
nrf_drv_lpcomp_init(&lpcompconfig, &lpcomphandler);
nrf_drv_lpcomp_enable();


However, my

void lpcomphandler(nrf_lpcomp_event_t event);


is never called when I manually toggle P0.06 pin of nrf51 from GND to ... (more)

8
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nRF51822 BLE example app doesn't work

Hello I am developing an application with BLE and I have just faced to a problem. I want to check my IDE settings and development environment.

I am using the development board "HRM1017" which is described here.

HRM1017
http://www ...
(more)

18
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2
2

Application Timer Tutorial with nRF52 SDK version 0.9.2

I can not find the macro:

 APP_TIMER_DEF(m_led_a_timer_id);


How do I create the timer ID with the SDK 0.9.2 for the nRF52?

28
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1

bootloader_util_arm.c file is not working in nRF51_SDK_10.0.0

When I am trying to use that file for Firmware Over the Air update feature in my application code then program compilation and all is working fine but when I am trying to load that program from Keil tool directly ... (more)

21
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1
vote
1

4 channel pwm from nrf5182 qfaag0

I want to make 4 channel pwm output from the nrf51822 ic. I am using sdk6 and softdevice v7.3. I am able to make 3 channels of pwm output by using the library provided by nordic. But this library ... (more)

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I2C PN532 Problem (Clock Stretching?)

Hi,

I am trying to connect a PN532 (RFID Tag Reader module) to BLE Nano (nrf58122) using I2C. This doesn't work, and I'm trying to figure out why.

I am generating the code via Arduino IDE. The sketch ... (more)

36
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nrf8001 reset

Hi devs,

I'm setting up my own .NET mircro framework stack for the Adafruit nRF8001 Break Out board. When write the Reset port I do get an interrupt on the Ready port, but when I start reading from the ... (more)

23
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sd_ble_gatts_value_get issue with DFU service activated

I'm using this below function to check evey one second if indication is enabled on the central side before sending data

when I call the below function without enabling DFU service, it works fine

but when I call it ... (more)

Statistics

• Total users: 9527
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• Resolved questions: 5384
• Total questions: 11853

Recent blog posts

• Building a BLE application step by step from scratch

Posted 2016-02-11 18:57:38 by Jocelyn Masserot
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Posted 2016-02-04 05:09:41 by Daniel Veilleux
• Bluetooth Smart and the Nordic's Softdevice - Part 2 Connection

Posted 2016-02-01 16:21:31 by Hung Bui
• nrfjprog, pynrfjprog - Intro, Mac OS X & Linux now supported, New Feature

Posted 2016-02-01 14:23:44 by Michael Dietz

Recent questions

• why app preserved data are lost after DFU

Posted 2016-02-11 18:34:17 by makouda
• nRF51 - LE ACL or Baseband Packet

Posted 2016-02-11 17:40:25 by kkptd
• DC/DC power consumption peaks after TX

Posted 2016-02-11 16:15:05 by Sven Kautlenbach
• how to measure the coin cell battey voltage in real

Posted 2016-02-11 15:15:14 by prabhudurai
• nrf52832 RTC & debugger behaviour

Posted 2016-02-11 15:00:41 by yaron