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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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2
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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.

380
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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)

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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
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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!

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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)

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2
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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)

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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)

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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)

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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)

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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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votes
1
answer
Last activity 2013-08-21 11:21:39 +0200 by Jeffery

Max size of HID report descriptor.

Hi Could I modify HID report descriptor length over 255 bytes? In Desktop1.2.2.293, the returned descriptor size is only decided by wLength LSB byte and ignores MSB byte.

Jeffery

1k
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3
votes
2
answers
Last activity 2013-08-21 11:21:17 +0200 by Igal Eliyahu

Example code for PWM using PPI, nRF51822

Hello,

I have the nRF51822 Evaluation Kit. I have run the basic code examples like 'Blinky' and the BlueTooth HRS (Heart Rate) application, successfully. Now I would like to start building my application, and this requires a PWM, however I ... (more)

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no
votes
2
answers
Last activity 2013-08-21 11:17:34 +0200 by M

Eclipse compiling [closed]

Hi all,

I have followed the guide (AN-29) for using eclipse with the nRF51822 but it gives me several errors.

First at all, the linker says: ...../arm-none-eabi/bin/ld.exe: cannot find -lnosys. I found that this library was declared ... (more)

421
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1
vote
2
answers
Last activity 2013-08-21 11:17:27 +0200 by Gregor

iPhone demos: location of associated Keil project file(s)?

Hi,

Just bought the nRF51822 eval kit. Looks like it came with some great demos for iPhone (nRF_Demo_Utility, nRF_Proximity, nRF_Temp, nRF_UART), but having trouble getting these demos to work! Did Nordic provide associated Keil project files for these? I think ... (more)

1k
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2
votes
3
answers
Last activity 2013-08-21 11:16:38 +0200 by Nicholas Hosein

Specify Port for L2CAP Communication

Hi all,

I am trying to specify a fixed port for a L2CAP connection on the nRF51822. The client is a Linux box running bluez (which has BLE support). The client software is designed in Qt, which exposes the underlying ... (more)

278
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votes
1
answer
Last activity 2013-08-21 11:14:19 +0200 by Bernard Britton

nRF9E5 developer

Hi My name is Bernard Britton from Trinidad & Tobago and I am looking for someone competent with nRF9E5 to develope a wireless potentiometer position sensor with LCD receiver display for my company. IC of interest Regards Bernard Britton Expanse Ltd 18687869597 expanse@tstt.net.tt

1k
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no
votes
4
answers
Last activity 2013-08-21 11:14:13 +0200 by David

reuse_TX_PL command timing diagram

Hi all,

I'm trying to use NRF24L01, using REUSE_TX_PL command, the data sheet says as long as CE keep high, the chip will transmit the payload continuously, what i wondering is whether there is a delay between packet frame ... (more)

1k
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no
votes
2
answers
Last activity 2013-08-21 10:59:23 +0200 by joshjack

Can't get nRF51822 examples installed

I've got an nRF51822 development kit that I'm trying to get started on. I've gone to Kiel and downloaded uVision 4 (mdk472_a). I install it with all default settings and it seems to install just fine.

I ... (more)

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votes
14
answers
Last activity 2013-08-21 08:22:44 +0200 by Sergy

SPI returns 0x0F on any request after random period of time [closed]

Hi, im using nRF24L01+ to constantly transmit data and all working fine, but at some point SPI fails and the only returned values I get are 0x0F - doesnt matter which register I try to read or write. Any idea why ... (more)

849
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1
vote
1
answer
Last activity 2013-08-20 17:18:29 +0200 by Sébastien Despont

Soft Device app_timer lib : what is the maximum number of timers

Dear Nordic support team,

What is the maximum number of timers that I can create (and use) using the app_timer lib?

    err_code = app_timer_create(&m_timer_m_1_0,
                                APP_TIMER_MODE_REPEATED,
                                timer_m_1_0_timeout_handler);

I have tried to initializate 10 timers this morning which are not all involved ... (more)

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2
answers
Last activity 2013-08-20 16:36:58 +0200 by Frank Zhao

nRF51822, max IO pin voltage while off?

To be more detailed:

One of my ADC pins will be connected to another device that could be providing a voltage of about 3V, but through a 100 kohm resistor. (actually it's 6V, with two 100 kohm resistors as ... (more)

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votes
1
answer
Last activity 2013-08-20 15:33:04 +0200 by Javier Gonzalez Ferreyra

Can I use nRF24L01+ with pic? is there any library?

Hi there. We are developing an IoT device (we are planning to use nRF24L01+) we would like to implement with microchip uC, the question is if there is a library available for CCS or MPIDE, or any other C compiler ... (more)

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votes
1
answer
Last activity 2013-08-20 14:45:18 +0200 by juganu

No CPU DLL specified under 'options for target - debug' !

Hello. I am a starter

Keil say : No CPU DLL specified under 'options for target - debug' !

What I can do.

647
views
no
votes
1
answer
Last activity 2013-08-20 12:57:18 +0200 by TT

ANT HRS demo using UART RX

Hi,

I add UART support using IRQ on the "ant_hrm_tx" example code.

and I'm sending packet of 4 bytes that contains: Delimiter,HeartRate,Battery,Delimiter

the frame is very basic and send every 1000ms from another MCU.

the problem ... (more)

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