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# 20,786 questions

653
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no
votes
1
answer

## 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)

527
views
no
votes
1
answer

## 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
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2
votes
1
answer

## 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!

1k
views
1
vote
1
answer

## Timer configuration with Softdevice

Hi,

mi question is about how to configure in a good and complete way Timer1 and Timer2, so trying to be more specific with my Question: I need timers with a Tick of 250ns, and as far as i know ... (more)

316
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no
votes
1
answer

## Load flash image fail with nRFgo studio using PCA1000 (Dongle)

Hi all

I want to load the (UART_example) flash image compile with Keil by nRFgo studio, but a program fail occur as below screenshot:

any idea? Thanks.

2k
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no
votes
2
answers

## nRF51822 DK Module as Master

Hi,

I'm looking to work with a Bluetooth LE master device. From what I read the nRF51822 should be able to function as a Master device (the dongle is configured to be a master device). Is there a way ... (more)

311
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no
votes
3
answers

## Bluetooth profieles

Hi, which Bluetooth prfofiels are supportet from the nrf51822?

Thanks, Nils

374
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no
votes
1
answer

## Can I develop BLE apps on the nrf51822 with uVision in evaluation mode?

Or, do I need to buy the full IDE?

1k
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no
votes
1
answer

## GPIOTE and nrf_gpio_cfg_input/output

Hi, I am using a app_gpiote_user_register to register a gpiote user and then enabling it, before I set the pins this user detect to be input using nrf_gpio_cfg_input. When my program is running I have to switch the pin to ... (more)

773
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no
votes
2
answers

## Custom BLE Client

The Master Control Panel uses the PCA10000 board loaded with a ME (Master Emulator?) firmware.

Is it possible to get the source code to this firmware in order to make your own BLE client, and in turn control it via ... (more)

1k
views
1
vote
3
answers

## nRF24l01+ Through Concrete

We have developed and certified a module which uses the nRF24l01+. We spent a good amount of time tuning the antenna circuitry which has resulted in very good range... in open space. The primary transmitter is located in a plastic ... (more)

899
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no
votes
1
answer

## Does the nRF8001 development system include a compiler toolchain?

Hi,

Does the nRF8001 Development kit from Nordic Semiconductor include a compiler, debugger toolchain ?

689
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no
votes
1
answer

## How to stop the advertising after connecting the master.

Now I am doing the BP by using the "ble_app_bps" project. I find it still advertising after connecting to the master,so the power consumption is high.So I wanth to use the "sd_ble_gap_adv_stop" function to stop the advertising to ... (more)

2k
views
3
votes
1
answer

## 128 bit UUID's [closed]

Hi,

Function call to > err_code = ble_advdata_set(&advdata, NULL);

returns always err_code = 7 (NRF_ERROR_INVALID_PARAMETER) for a 128 bit UUID type (BLE_UUID_TYPE_VENDOR_BEGIN).

For 16 bit UUID types it works fine. Here is the code:



#define UUID_128       1

static void advertising_init(void)
{
uint32_t ...
(more)

465
views
no
votes
1
answer

## How many PPI channels can I use?

When running a BLE stack how many PPI channels are available to me and does it stay fixed?

35k
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9
votes
5
answers

## Is there a serial port profile for BLE?

Is there any equivalent to the SPP profile from Bluetooth Classic? I've always used this as a way to transmit custom data using Bluetooth, but I can't seem to find anything equivalent for BLE.

6k
views
9
votes
2
answers

## How can I use a vendor specific UUID? [closed]

When I try to make a custom service with the S110, how do I set the service and characteristics up to use a custom 128-bit UUID instead of a 16-bit one, based on the Bluetooth SIG base?

3k
views
3
votes
6
answers

## RTC calendar

Hi, I need a RTC calendar ble stack on nrf51822 . (turn on the RTC0 on ble stack and get the count, how to setting the rtc wakeup )

which calendar need follow : track of the time (hours, minutes and seconds) and ... (more)

2k
views
3
votes
3
answers

## _start not found

Using eclipse and code sorcery compiler I got an undefined label error, see below [b]_build/gcc_startup_nrf51.o: In function Reset_Handler': /home/oscar/workspace/Nordic/nrf51822/Source/templates/gcc/gcc_startup_nrf51.s:150: undefined reference to_start'[/b] "/opt/arm-2013.05 ... (more)

1k
views
4
votes
2
answers

## Is there any to set CCCD's default value to be 1(i.e. enabling the notification of an attribute)?

Hi, I am trying to enabling a notification of an attribute(once the attribute changed, the server will push the new value to the client) and I learned I have to first configure the CCCD correctly to do this. In ... (more)

2k
views
1
vote
2
answers

## Get serial IO from evaluation kit nRF51422 via the Segger debug interface

Have you also wondered how to get serial IO (UART) with nRF51422-EK via the Segger debug interface?

[list=1] []Plug Eval kit in the USB port. []In Windows open "device manager" and read the port number from "Ports (COM & LPT ... (more)

4k
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8
votes
1
answer

## What's the difference between nRF51822 Evaluation and Development kits?

I'd like to start developing with the nRF51822, and have found the two kits supplied by Nordic, the nRF51822 Evaluation Kit and the nRF51822 Development Kit. What's the difference between these, and which one should I buy?

1k
views
1
vote
1
answer

## How can I determine if a packet is sent with W_TX_PAYLOAD_NOACK command? (nRF24L01+)

I'm trying to use the NOACK mode for some packets on the transmitter side, and W_ACK_PAYLOAD on the receiver side. My problem is that if the receiver gets a packet with the NOACK flag, then it won't send ... (more)

1k
views
no
votes
3
answers

## PCB layout recommendations for the NRF51822 WLCSP62 package

Where can I find PCB layout recommendations for the NRF51822 WLCSP62 package? In the datasheet, only package details is appearing.

914
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1
vote
1
answer

## Calibrate internal 32khz RC oscillator using the 16MHz crystal?

Is there an example code anywhere for the nRF51822 to calibrate the internal 32khz RC oscillator using the 16mhz crystal when not using the BLE stack/softdevice?

I would like to calibrate it every 4 seconds to meet the 250ppm ... (more)

330
views
no
votes
2
answers

## Maximum I/O - current

Hi, where can i found the maximum current of the I/O Pins, i only can found the maximum voltage.

Thanks, Nils

2k
views
1
vote
3
answers

## UART [closed]

Hi,

is there any Example to use the UART ? I need an monitor while the application is running, is the UART COM Port the right one for this?

Is there an example with the app_uart?

Best regards Nils

340
views
no
votes
1
answer

## 24LE1 can be connected to other vendor's tranceiver?

Hi all,

I would like to use LE1 to control Remote controlled car. But we have been used another vendor's chip in the car by now. Is it possible to connect between them? I have no idea how to ... (more)

730
views
2
votes
1
answer

## how many ble 4.0 devices can connect up to the nRF51822 IC through ble 4.0 while the nRF51822?

hi, I was wondering how many active ble 4.0 devices can the nRF51822 IC support at one time?

thanks, david perreault

319
views
1
vote
1
answer

## Setting up broatcasting time interval

Hi there,

i was trying to implement a firmware for a small device using the nRF8001 only in broadcasting mode.

So far, everything works fine. But one thing mentioned in the nRF8001_PS_v.1.1 manual doesn't seem to work ... (more)

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• Resolved questions: 8868
• Unanswered questions: 2386
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