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27,773 questions

3k
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4
votes
1
answer
Last activity 2013-08-06 08:25:28 +0200 by Yalcin Akdogan

How to determine Tx Power Level Value? [closed]

Hi,

It is not transparent to me, how can I determine this value? Is it a best practices value? I want to implement Tx Power profile but I don't know where to get this value.

Another question is, how ... (more)

4k
views
10
votes
1
answer
Last activity 2013-08-06 07:16:55 +0200 by Guest

How big should APP_TIMER_OP_QUEUE_SIZE be?

On top of almost all the BLE examples in the SDK, there is an APP_TIMER_OP_QUEUE_SIZE define. How can I know how big this should be for a specific application?

1k
views
1
vote
1
answer
Last activity 2013-08-06 01:21:56 +0100 by Dan Danknick

I'm having trouble advertising a VS service

I'm leveraging off the heart rate sensor example to create my own VS service. I've successfully registered a 128-bit UUID with the Soft Device which is enumerated along with 0x1800, 0x1801, the Battery Service and the Device Information ... (more)

964
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no
votes
1
answer
Last activity 2013-08-05 22:11:56 +0100 by Bret Foreman

APP_BUTTON_INIT and GPIO_WAKEUP_BUTTON_CONFIG

I'm confused about the use of these two functions. I want my app to sleep immediately upon start and then wake up and do a BLE advertise when I press a button.

1) I see that both of these ... (more)

5k
views
5
votes
6
answers
Last activity 2013-08-05 17:11:37 +0100 by Jamie

Cannot recover with NRFgo: "Could not read AHB-AP Id. Could not connect to target."

See subject. The softdevice is currently installed on the chip (v6.0.0-1.alpha)

I searched online, and found some information that the security state of the chip has been set to "locked". Is this true? How to unlock it?

Thanks! Jamie

2k
views
2
votes
2
answers
Last activity 2013-08-05 16:09:16 +0200 by David Rolland

nRF51822 - Internal pull-up/pulldown resistor value of SWDIO and SWDCLK

Hi Nordic devzone,

For the nRF51822 device, I would like to know if there is any internal pull-up/pulldown resistor on SWDIO and on SWDCLK (although a 12 K-ohm pulldown resistor is required on board). Also important is to know ... (more)

2k
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1
vote
1
answer
Last activity 2013-08-05 14:50:28 +0100 by dorafmon

About RSSI of BLE

Hi, I am trying to get the rssi value of a connection, and what I am trying to do is to start the rssi in the beginning at the connection and end it at the end of connection. So in ... (more)

447
views
1
vote
1
answer
Last activity 2013-08-05 13:11:50 +0100 by Robert Taylor

Write long characteristic with the Master Control Panel and Soft Device v6-0-0.alpha

Hi,

I'm using the MCP to send a long to a nrf6310 board loaded with SD v6. The board hangs when I send a long though, is this due to the MCP not being set up to send longs ... (more)

1k
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no
votes
2
answers
Last activity 2013-08-05 12:51:15 +0200 by Nikola

Plotting ECG signal?

Hello,

I have a question....

I have real ECG device and I almost got PCA10001 development board. Studying about PCA10001 I noticed that this board has ADC. I downloaded aplication nRFready iOS demo App from Nordic Semiconductor to my iPhone ... (more)

2k
views
1
vote
3
answers
Last activity 2013-08-05 09:37:53 +0100 by Jan Maltha

nRF24L01+ as MultiCeiver without ACK, is it possible?

I have a system that uses 5-byte addresses. The first 4 bytes are always the same, but the last byte has 4 different values. For test purpose I want to listen, from another unit, and without sending anything, to all ... (more)

784
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5
votes
1
answer
Last activity 2013-08-05 09:03:23 +0200 by S├ębastien Despont

Function address as PPI "Task End-Point"

Hi,

Is it possible to give a function address to the "Task End-Point" of a PPI channel?

Like :

    err_code = sd_ppi_channel_assign(PPI_CHAN0_TO_TOGGLE_LED,
                           &(NRF_TIMER1->EVENTS_COMPARE[0]),
                           &(myTestFunction));

Or the only accepted TEP are timer and GPIOTE tasks?

Thanks

1k
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no
votes
4
answers
Last activity 2013-08-05 07:37:29 +0200 by

Connection between two nrf51822 ICs

Hi,

in my application I have a device that has to be controlled by a remote control. For transmitting data between the remote and the device I would like to use BLE (not the proprietary Nordic protocols).

1) Is it ... (more)

554
views
no
votes
1
answer
Last activity 2013-08-04 17:00:20 +0100 by Nils Minor

More PWM Channels?

Hi,

i get the example for using PWM to run and modfied it to use it in my application. My Prolem is that i only have one PWM Output toggle Pin. How can i build a second PWM output, i ... (more)

447
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no
votes
2
answers
Last activity 2013-08-04 10:01:50 +0100 by slboat

Can i develop in mac system

if i dont wana use windows to do this.

435
views
no
votes
1
answer
Last activity 2013-08-04 10:01:33 +0100 by slboat

IAP example for nrf51822

hi,i wana use iap for nrf51822,so it can firmware upgrade like ti's oad,is nrf51822 have such spec?

532
views
no
votes
1
answer
Last activity 2013-08-04 10:01:13 +0100 by slboat

related about nrf51822 and cortex-m0

does nrf51822 support the function of cortex-m0?i cant see any document about this

1k
views
3
votes
2
answers
Last activity 2013-08-04 07:14:38 +0100 by lee joongkeun

how can i make system tick funtion?

I know that nrf51822 is not supported system tick handler ? I need system tick function. How can i make system tick function for nrf51822?

587
views
no
votes
1
answer
Last activity 2013-08-03 13:25:11 +0100 by Stephan

Bluetooth Low Energy basics?

Hi everyone,

do you know of an explanation or some kind of tutorial to see how Bluetooth Low Energy works? For example some detailed information on those nrf51822 examples. What is definately needed for running BLE, and what is not ... (more)

658
views
2
votes
1
answer
Last activity 2013-08-02 16:48:12 +0100 by Joe Drewn

Can the nRF8001 be used as a Central ?

I am designing a device that needs to operate both as a Peripheral (such as a Heart Rate sensor) and also as a Central so it can optionally connect and gather data from other Peripheral devices. Is this possible with ... (more)

1k
views
1
vote
2
answers
Last activity 2013-08-02 08:46:25 +0100 by Joseph

nRF51822 - wireless firmware update through BLE

Hello,

Do the softdevice stack support wireless firmware update through BLE?

Thank you! Joseph

882
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3
votes
1
answer
Last activity 2013-08-02 03:04:50 +0100 by cho jae young

Radio Transmitter/Receiver example

Your served radio tramsmitter/receiver example using PCA 10000 USB dongle, PCA 10001 evaluation kit. It's just only one byte data communication. It works well. If I communication multi-byte data with one packet, what did I fixed source code ... (more)

412
views
1
vote
2
answers
Last activity 2013-08-02 03:03:56 +0100 by cho jae young

Is it possible multi-bytes sending/receiving in one-packet with RF radio?

Your served radio transmitter/receiver example using PCA 10000 USB dongle with PCA 10001 evaluation kit. There is only one-byte send/receiving example. So, I was to send(receive) ten-bytes in one-packet, I changed source code "main.c","radio_config.c ... (more)

7k
views
no
votes
10
answers
Last activity 2013-08-02 01:12:49 +0200 by steven

halt Flash write

Dear everyone:

Can you tell me Using built-in flash and use restrictions,

because it halt at ble_flash_page_write() function.

629
views
no
votes
1
answer
Last activity 2013-08-02 00:57:36 +0200 by Sam Wei Quan

how to determine nRF51822 laser mark

Recently i have bought 4 nRF51822 custom board and unable to program it. The laser mark of the nRF51822 for custom board is N51822 QFAAC0 1308AE

I failed to program with the firmware that function properly on the nRF51822 Dev ... (more)

621
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no
votes
1
answer
Last activity 2013-08-01 16:50:49 +0100 by sd

No response received for ReadRequest on handle

I'm attempting to write my own Service based on an example; there are two simple Characteristics in the design. During the discovery process, however, I'm getting the following:

...
[16:16:23.6] Received Read Response, handle: 0x0007, value ...
(more)

703
views
no
votes
3
answers
Last activity 2013-08-01 16:50:21 +0100 by sd

Assigning a functional block to a GPIO

I'm confused about how to assign a functional block's I/O (TWI in my case) to a particular pin on the device. Is there a worked and documented example? Is there a relevant application note?

544
views
1
vote
1
answer
Last activity 2013-08-01 16:50:07 +0100 by sd

Services initialisation and setup template?

Now that I have TWI and the BLE stack initialising, I'd like to create services. The Server (peripheral) sends out a few bytes to the client when a local trigger happens, and also needs to be able to accept ... (more)

739
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no
votes
1
answer
Last activity 2013-08-01 16:49:55 +0200 by sd

Triggering a task when a TIMER event

I'm looking at the led.c example in the heart rate monitor example. What this shows is how to tie a TIMER event to toggling an LED. I understand most of the mechanism there. The novice that I am ... (more)

549
views
no
votes
1
answer
Last activity 2013-08-01 16:49:28 +0200 by sd

Bonding only when client is close to server?

What's the proper way to implement bonding that depends on proximity (rather than a whitelist)? So when the client (phone) is close (say, five to ten centimeters) to the server (BTLE peripheral) then there is a bond created and ... (more)

1k
views
2
votes
1
answer
Last activity 2013-08-01 16:49:07 +0100 by sd

Multiple concurrent connections on the nRF51822?

Can the nRF51822 handle more than one connection at a time? I suspect that the answer 'no' based on some indicators, but it'd be good for me to get a conclusive answer. Thanks!

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