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26,199 questions

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Last activity 2013-08-26 11:22:46 +0200 by Viktor

Strange behaviour with nRF51822 and S110

Hello, I'm trying to develop with the nRF51822 Eval kit and GCC and Eclipse. I've been getting some strange behavior and errors lately. I'm not really sure how to describe it better, because I'm not sure ... (more)

315
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1
answer
Last activity 2013-08-26 11:18:32 +0200 by Hans-Christian Otto

Gazell flush FIFO doesnt work

I'm using the Gazell protocol on my NRF51822. On the host side I got a problem with the FIFO length. I put 4 ACK packets into the FIFO but this give me an error if I check it with ... (more)

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7
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3
answers
Last activity 2013-08-26 06:32:56 +0200 by Pablo Garcia

streaming data over BLE (nRF8001) high throughput / bandwidth solution

I want to stream data continuously from a sensor to a host, using BLE.

Using the nRF8001, I have defined a GATT server, with notification. From an Android phone, I open the pipe, and start receiving the information.

However, with ... (more)

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1
answer
Last activity 2013-08-26 04:27:01 +0200 by Harshad

Getting Started with nrf51822a

Hello Everybody,

I am new to Nordic and Bluetooth. I see nrf51822a have BLE + Cortex MCU inbuilt and this suits best to my application.

I have some doubts regarding how can I start my development with nrf51822a. I have used ... (more)

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3
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Last activity 2013-08-25 19:53:41 +0200 by Andre

Why does NRF_GPIO->IN always report the same sense level?

I am using app_gpiote_user_register() and ads_interrupt_enable() to define a ping change interrupt. When the code runs, I can see on my logic analyzer that the GPIO pin assigned to the interrupt is being toggled bt the external source and the ... (more)

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1
vote
1
answer
Last activity 2013-08-25 15:09:38 +0200 by umair

need example code of 1 wire on nrf51822a

Hello, Its me again.First of all I want to say thanks to HÅKON ALSETH, with his help I was able to work with hardware interrrupt. now I am facing another problem, I need to interface DS1820 ( a 1 wire ... (more)

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1
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2
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Last activity 2013-08-24 03:02:14 +0200 by PSRI

Please suggest how to start , expert in RF with nordic product

Dear All i would like to use

nRF51822 nRF51422

i would like to use nordic product, but so shame, too low basic knowledge for make program for embedded, edit library , with little adding and etc,

So i would like to ... (more)

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2
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Last activity 2013-08-23 20:03:18 +0200 by Mathew Stein

Increase UART Buffers

Hi,

We have a hardware application that prevents us from using flow control to interface with external hardware. We require the NRF51822 to be able to buffer up to 256 bytes of high speed UART information (around 256k bps) and ... (more)

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3
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2
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Last activity 2013-08-23 14:20:01 +0200 by Karolina

How to run ble_app_hrs project?

Hello, I have major problem trying to debug/run ble_app_hrs example. The thing is that when I enter debug mode the code is stuck here:


0x000001B4 4908      LDR      r1,[pc,#32]  ; @0x000001D8
0x000001B6 68C9      LDR      r1,[r1,#0x0C]
0x000001B8 2900 ...
(more)

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1
vote
1
answer
Last activity 2013-08-23 13:00:00 +0200 by Karolina

Where can I find docs on setting up a service?

Where to find example/tutorials docs of setting up a BLE service/program? (except bluetooth site)

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2
answers
Last activity 2013-08-23 08:43:46 +0200 by Hisham

NRF8001 fully qualified RF-layout

Hello,

I checked Nordic website for layout of NRF8001 but i didn't find. Please if some one can share a qualified RF-layout.

Help is appreciated. Regards, Hisham

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votes
1
answer
Last activity 2013-08-23 08:42:37 +0200 by Kino

ADC for higher voltages than VCC?

So i am using a LiPo battery at 4.2V and running my nRF51822 at 2.0V. Is it safe to connect the battery to one of the I/O pins to read off the battery voltage (as to calculate ... (more)

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1
vote
1
answer
Last activity 2013-08-23 07:58:17 +0200 by Sébastien Despont

Silicon die temperature value interpretation

Dear Nordic Developer Zone,

I am able to ask a Silicon temperature measurement, but not to correctly interpret the answer.

After last measurement, I have got 0x29C. In your documentation, you specify that the value has 0.25°C precision ... (more)

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-2
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1
answer
Last activity 2013-08-23 07:50:58 +0200 by Jaehee

nRF51822's Peripheral and Central

Hello, I'm M.S. Candadate in Korea. I have a Question. I heard that nRF51822 can operate only as Peripheral role and can't operate as Central role. Now, Does it operate both as Peripheral and Central role?

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4
votes
2
answers
Last activity 2013-08-23 02:59:22 +0200 by Dan Danknick

Where does the MAC address come from?

My project has moved off the devboard and onto prototype PCBAs. I notice that they all seem to have unique MAC IDs on the air! I'm not complaining (one less thing to worry about) but where does that MAC ... (more)

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votes
2
answers
Last activity 2013-08-22 14:35:42 +0200 by shali lv

How do I use nRF51822DK?

How do I use nRF51822DK without "nRFgo Starter Kit Motherboard"? I have read "nRF51822 Development Kit User Guide v1.2" and have no result how can I only use nRF51822DK hardware and keil enviroment to work.

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no
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1
answer
Last activity 2013-08-22 10:45:36 +0200 by Adavid

Can I use UART in BLE service ?

Hello everyone , can i use UART which is not a services or characteristic in bluetooth low energy . It will result in some question or bad effection? By the way . why I cannot use sd_nvic_EnableIRQ(UART0_IRQn) function instead NVIC_EnableIRQ(UART0_IRQn) function ... (more)

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3
answers
Last activity 2013-08-22 10:39:04 +0200 by Adavid

How can I wake up BLE device from power system off mode without buttons

Dear all: recently, I follow heart rate profile to write custom BLE profile,but I also went to a number of issues. how to wake up the device when entered power system off mode via software . By the way . why ... (more)

306
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1
answer
Last activity 2013-08-22 03:11:13 +0200 by Johnson CHEN

S110 spec: Detail time and current consumption data for connection event

Hello Nordic expert, We can find connection event diagram (figure 5) in S110_SoftDevice_Specification_v1.1.pdf. But customer needs more accuracy data for time and current calculation. For instance, please refer to attached file "Bluetooth® low energy, A Very Low Power ... (more)

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2
answers
Last activity 2013-08-22 02:12:46 +0200 by andy2003hunan

can we get the source code of nRF Temp APP for Glaxy S4?

Will NORDIC open this source code for the NRF51822 user?if yes,when we can get the source code? tks!

2k
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no
votes
5
answers
Last activity 2013-08-22 02:04:17 +0200 by andy2003hunan

adding scan response

from training document from Nordic company(see the attachments),it mentioned that we can add scan response .but i can not find any information in BLE_HRS demo.could you tell me.how can i find it ,and how to add ... (more)

405
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votes
2
answers
Last activity 2013-08-22 01:43:07 +0200 by marschen

About ble_app_hids_mouse consumer function

Based on nRF51822\Board\nrf6310\ble\ble_app_hids_mouse example, Used hid consumer page function, like play/pause or volume+ or volume- ...etc function,

In nRF51822 device with PC (windows 8 OS) connected, Before this media function it working, After power off ... (more)

762
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3
answers
Last activity 2013-08-21 20:17:07 +0200 by Hisham

NRF8001 dc/dc converter enabled schematic

Hello,

I attached the schematic found in the manual for NRF8001, in the case of DC/DC converter enabled. It shows that an external 32.768KHZ crystal is used, while in the table(also attached) shows that in case the ... (more)

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1
answer
Last activity 2013-08-21 19:42:02 +0200 by Hisham

NRF8001 DC/DC converter enabled

Hello,

This is the first time i use NRF8001 chip, i was reading the ic manual nrf8001_PS_v1.1.pdf (see attached file). It was written that in case i used DC/DC converter to step down the voltage it can ... (more)

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votes
2
answers
Last activity 2013-08-21 15:57:14 +0200 by Alvaro

sd_ppi_channel_xxx funtions

Hello,

I made a PWM with the TIMER2 of my nRF51822 (with the SoftDevice) and was working fine, till I read that I should not use the "NRF_PPI" functions and use the "sd_ppi_XXX". I change them in my code and ...
(more)

1k
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2
votes
2
answers
Last activity 2013-08-21 11:24:00 +0200 by Kieran M

Slow set up with nRF8001 on custom board

We have recently moved to a new PCB which puts the nRF8001 on the layout instead of plugging into a nRF2741 development module. The nRF8001 connects to a TI Cortex-M4 Tiva MCU (previously a TI Cortex-M3).

Two issues have now ... (more)

2k
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no
votes
4
answers
Last activity 2013-08-21 11:23:30 +0200 by zhimi

How to develop a GATT Client application?

I have a central device , that acting as a gatt server. the service is customize, and 128bit- primary serivice UUID ,its characteristics' UUIDs(128bit) are all known, how to discovery the service and characteristics in nrf51822 peripheral? I don't ... (more)

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2
answers
Last activity 2013-08-21 11:23:15 +0200 by Jeffery

Power consumption of nRFready Desktop2

Hi Could you provide the power current in System on Active, System on Sleep, and System OFF for nRFready Desktop2 keyboard and mouse? nRF51 was programmed Desktop 2 v1.0.4 firmware. Thanks.

Regards, Jeffery

2k
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4
votes
2
answers
Last activity 2013-08-21 11:22:44 +0200 by Rashid

nRF51822 Average current consumption

Hi Where do I find a measurement report from Nordic which shows the average current consumption for a typical BLE application (1 seconds advertising period e.g.)?

Until now, I could not find any official AppNote or numbers even though ... (more)

1k
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no
votes
3
answers
Last activity 2013-08-21 11:22:08 +0200 by Łukasz S.

BLE scanner on nrf51822

Hi,

I want do make BLE scanner on nrf51822. As I checked the nrf51822 should be in GAP Central role and perform acitve/passive scans. Is is correct that S110 SoftDevice doesn't support GAP Central? So how it is ... (more)

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