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23,732 questions

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3
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Last activity 2014-03-07 13:27:50 +0200 by gootoomoon flag of China

sd_power_system_off() cause reboot

I write this code to set my ble device power down,but it causes reboot without any error report.


     GPIO_WAKEUP_BUTTON_CONFIG(LEFT_BUTTON_PIN_NO);
     GPIO_WAKEUP_BUTTON_CONFIG(RIGHT_BUTTON_PIN_NO);

     err_code = sd_power_system_off();

when I comment out this two lines


       //GPIO_WAKEUP_BUTTON_CONFIG(LEFT_BUTTON_PIN_NO);
       //GPIO_WAKEUP_BUTTON_CONFIG(RIGHT_BUTTON_PIN_NO);

        err_code = sd_power_system_off();

power down ... (more)

542
views
2
votes
1
answer
Last activity 2014-03-07 12:26:33 +0200 by Adrian Eggenberger flag of Switzerland

NRF51822 TWI Master (Software) results in BLE Disconnects

Hi

I've a reproducable behavior i'm not able to explain. I'm using the softdevice S110 6.0 on a nRF51822.

The firmware implements some BLE profiles and uses TWI Master with the software TWI master driver from ... (more)

674
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no
votes
2
answers
Last activity 2014-03-07 12:18:33 +0200 by cocoa

Mapping external program memory , possible ?

Is there a way to map external memory (SPI connected) to force the app to start execution from there ?

If not feasable , there is a way to transfer the execution from internal flash to an external one and switching off ... (more)

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no
votes
3
answers
Last activity 2014-03-07 05:46:35 +0200 by luoluochao

CAN I MODIFY UART TXD INTERRUPT FLAG? (SET NRF_UART0->EVENTS_TXDRDY to 1 in software)

Hello: I am using NRF51822 to design somethings. And I want to use interrupt send method instead of polling send method. NRF51822's UART0 provides TXDRDY interrupt. After serial output one frame, Hardware set TXDRDY to 1, and then program ... (more)

241
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no
votes
1
answer
Last activity 2014-03-07 05:28:32 +0200 by gootoomoon flag of China

How can I bypass the bug of bonds of Android?

I am developing hid_mouse . When I connect Android once and ubond hid_mouse I must set bluetooth off and on again to connect ble device otherwise it will connect again to the Android auto but can not work normal.

nRF51822

Android ... (more)

271
views
no
votes
1
answer
Last activity 2014-03-06 22:59:45 +0200 by David Smoot

ANT Firmware Update OTA, Would this work?

I have a 51422 board design and I just got Ant-FS working with our firmware so I can now download data from an external SPI flash to a desktop application.

I want to be able to update my code on ... (more)

604
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1
vote
1
answer
Last activity 2014-03-06 14:19:55 +0200 by Joe Merten

nRF51822 & s110 - cannot stop & continue my peogram?

When my application is running on the nRF51822 (e.g. the hrs example from the sdk), I want to stop this application (e.g. at a breakpoint), investigate some memory and than continue the execution. But it looks, that it ... (more)

1k
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3
votes
2
answers
Last activity 2014-03-06 13:51:16 +0200 by Sébastien Despont

sd_power_gpregret_set doesn't work??!!

Hi,

I am trying to set a value in the NRF_POWER->GPREGRET when softdevice is running, but it doesn't work. I don't get any error, but the value is always 3 and not 1 like I would.

Here ... (more)

1k
views
2
votes
4
answers
Last activity 2014-03-06 13:09:31 +0200 by Augusto

NRF51822 pwm

Is possible to generate 4 different pwm with the NRF51822 ?

523
views
no
votes
no
answers
Last activity 2014-03-06 10:50:02 +0200 by Terry

nrf51822 UART Lost bit

Hi, I have a serious problem, when I use uart of NRF51822 QFAAC0 to receive data from another MCU, I found that it will lost one bit at same position everytime. my SDK is 4.4.2, and SD is ... (more)

954
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no
votes
3
answers
Last activity 2014-03-06 10:46:58 +0200 by Kuba

nRFGo Studio flash erase/programming issue

Hi to all, Ihave a problem with erasing flash on nRF51422 Evaluation Kit. When i click on Erase all button in nRFGo Studio everything is looking normal ( segger led is blinking, no errors in nRFGo Studio), and i receive "Erase ... (more)

592
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no
votes
1
answer
Last activity 2014-03-06 04:30:25 +0200 by Jin Lu

Urgent, a big problem happened ! I can't download and debug。

my application is based on the BLE example: ble_app_hrs. it works well before, but when I add some functions to configure the GPIOTE , and then download to the Device, it doesn't work . And I can't download or debug ... (more)

1k
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4
votes
1
answer
Last activity 2014-03-06 04:16:57 +0200 by Nathan Hill

Change Characteristics' Read/Write Permissions While Connected

Greetings, and thank you ahead of time to anyone willing to lend some advice.

I'm implementing application-layer security by requiring central devices to supply a user-configurable password. This is being done in order to maintain compatibility with a security ... (more)

1k
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no
votes
3
answers
Last activity 2014-03-06 02:08:44 +0200 by Bryan

Issue w/ nRF24L01 Tx

I am having an interesting issue trying to send packets. Only a very small number are being received (~1 per second even when transmitting one after another), and they are only partially correct (receiving 0x9DAFAAAA when transmitting 0xAAAAAAAA).

Additionally, if ... (more)

246
views
no
votes
1
answer
Last activity 2014-03-05 22:02:57 +0200 by lam

MCP/Dongle packet throughput limitation

Hi,

It has been mentioned in several threads that the MCP/dongle (on laptop) cannot support transmission of more than 1 packet per connection interval. Could you help clarifying whether this limitation is due to MCP implementation or is it ... (more)

214
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no
votes
no
answers
Last activity 2014-03-05 19:49:08 +0200 by Eliot Stock flag of United Kingdom

float arithmetic confuses GDB

Why does this simple float arithmetic cause my GDB client to hang and my GDB server to say "GDB closed TCP/IP connection"? I'm sure I've got other float operations working just fine.

    float a, b, c;

    a ...
(more)

668
views
2
votes
2
answers
Last activity 2014-03-05 19:14:28 +0200 by Gil dePaula flag of United States

How can I get an 8 MHz (PWM) signal out of a GPIO line?

I'm trying to just set up a Timer for 8 MHz frequency and have that output on a pin. It seems simple but I'm having some problems (the frequency is a lot lower). What am I doing wrong ... (more)

290
views
no
votes
1
answer
Last activity 2014-03-05 16:27:59 +0200 by sriharsha kuchimanchi

BLE communication link, data exchange

I have a development dongle PCA10000 , PCA10001 board and nRF pebble.

My aim is to come up with a project where one of these devices

a) would advertise, b) the other device would do active scan, send a scan request ... (more)

1k
views
no
votes
4
answers
Last activity 2014-03-05 14:36:49 +0200 by Marcus Rundgren

Throughput with nRF UART example

Hi,

I have set up the UART example with PCA10000 and PCA10001. Everything works fine but one strange thing is the time to send 100kB of data. See my times below:

38 seconds 57 seconds 57 seconds 58 seconds

Then ... (more)

172
views
1
vote
2
answers
Last activity 2014-03-05 14:00:39 +0200 by Zlatko

nRF51822 problem restoring the demo app

Hello all,

I have nRF51822 and after one attempt to use it as a sniffer I have erase the demo app or everything else on it. Since then I was unable to turn back as it as it was. Also ... (more)

987
views
no
votes
5
answers
Last activity 2014-03-05 12:59:07 +0200 by Shey

nRF51822 J-link Suppy Voltage too low. But firmware is running and connectable BLE

Hi,

I am having trouble in downloading firmware to my development kit. Previously, everything worked and the module already flashed with my BLE firmware. Today, as usual I power up the device and everything works well (detectable and connectable with ... (more)

1k
views
no
votes
7
answers
Last activity 2014-03-05 10:27:34 +0200 by cocoa

j-link issue if used with Nordic EK j-link OB

I wish to inform Nordic about this issue with jlink OB used on EK boards when used in OS X environment.

J-link OB returns " Can not connect to J-Link via USB." and a CDC disabling is due to establish a ... (more)

345
views
no
votes
no
answers
Last activity 2014-03-05 05:09:28 +0200 by Karl

Problem with Notify (Custom and Standard Services) [closed]

Hi,

i took the example in AN36 (with the led but deleted the button stuff) and added the Battery Level service. Both are working fine together. On top of that I took the battery service and coustomized it like shown ... (more)

684
views
2
votes
1
answer
Last activity 2014-03-05 04:11:33 +0200 by Elliot.Chao

About ANCS

Hi,

We survey APPLE's ANCS right now! But we have a question that need your help

We see the sample code experimental\ble_app_ancs There are 1 base uuid and 3 service ID(cp,ns,ds) those need to added ... (more)

567
views
no
votes
1
answer
Last activity 2014-03-05 02:07:08 +0200 by Quantum Dimension

BLE Sensor simulator

Hello,

I see a master control panel software that can be used to control a PCA10000 USB dongle for BLE applications. Is there such a Sensor simulator application for the same dongle to simulate HRM, Cadence etc sensors? This would ... (more)

295
views
no
votes
1
answer
Last activity 2014-03-05 00:00:19 +0200 by Anthony Reynolds

Arduino capabilities

I'd like to have a short email dialogue with someone familiar with Arduino programming. Probably not a suitable forum topic; would someone be willing to email me? or.. message me. TIA Tony

533
views
2
votes
2
answers
Last activity 2014-03-04 19:48:30 +0200 by omega

nrf51 development WITHOUT MDK-ARM

This is my first time working on Nordic-made IC.

My previous experience is on PIC which has its own compiler (relatively cheap at 200$). I'm shifting to nRF51822 development kit and I recently read a document about development with ... (more)

4k
views
no
votes
1
answer
Last activity 2014-03-04 18:41:32 +0200 by Paul

Where to buy an ANT+ adapter for iPhone 5?

I found one from Garmin, but it is for iPhone 4. not the 5's superduper lightening connector :D

Or I have to get an i5 to i4 adapter??:(

304
views
no
votes
3
answers
Last activity 2014-03-04 18:33:53 +0200 by Peeter Vois

Multiple HoG services

I am using soft device S110 ver 6.0.0 with nrf51822. SDK version is 5.1.0. Reading the source of SDK, I see that it must be possible to create multiple hid services. I am having few difficulties ... (more)

951
views
no
votes
1
answer
Last activity 2014-03-04 18:28:22 +0200 by robtsai

BLE_GATTS_VLOC_USER and sd_ble_gatts_value_set

When using BLE_GATTS_VLOC_USER with a variable-length characteristic, we still need to use sd_ble_gatts_value_set to keep SoftDevice appraised of updates to characteristic value length (and presumably other bookkeeping).

A major motivation for using VLOC_USER (for us, at least) is for large ... (more)

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  • Resolved questions: 9858
  • Unanswered questions: 2925
  • Total questions: 23732