# 6,048 questions

Tagged
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## nRF UART App [closed]

where is "nRF UART App" nRF51822 code ?

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## Is there an example code for using PWM on the nRF51822 with a SoftDevice? [closed]

I'm looking to add PWM functionality to my design to drive an LED. Examples exist for other devices, and those don't use the SoftDevice. Is there an example or some reference design for making the PWM module work ... (more)

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## License for KEIL MDK is EXPENSIVE. Any way around??

I am starting my development work with Nordic Semiconductor nRF51822 Device and already purchased the Development kit. What i wanted to ask is do i need to purchase KEIL MDK 500 License to write my code/application? Because the Low ... (more)

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## How to configure debuging options

Hi, my name is nils. I am trying to develop on the nrf51822 eval board. I use eclipse an gcc with the j-link under windows 7 to programm/compile/and flash. I got it to work, that i can complie ... (more)

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## Programming different nRF51822 boards

Hi, student here, so go easy if you can :)

I have successfully programmed the evaluation kit and development with the softdevice and loaded my app on.

Now I am trying to work with some boards that I ordered online. One ... (more)

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## BLE Sniffer recommendation [closed]

Hello, I use nRF51822 for my project and I would like to purchase some BLE packet sniffer. Does anyone recommend any sniffer? My purpose for that is debugging and check transaction, so it will be good that it has a ... (more)

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## bonding issue [closed]

i was trying to implement bonding in ble_app_hrs example(SDK V6.1.0 and soft device v7.0.0) i have given params

#define SEC_PARAM_TIMEOUT                    30
#define SEC_PARAM_BOND                         1
#define SEC_PARAM_MITM                          1
#define SEC_PARAM_IO_CAPABILITIES           BLE_GAP_IO_CAPS_DISPLAY_YESNO
#define SEC_PARAM_OOB                            0
#define SEC_PARAM_MIN_KEY_SIZE ...
(more)

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## FreeRTOS

Has anyone tryed or know if freertos is working with nRF51822?

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## Mesh protocol!

Is there any plan to implement a mesh protocol our anyone know some open source mesh library that can be used?

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## nRF51822 over the air bootloader with gcc

For my current project, I need to compile the »over the air bootloader« with gcc (because our buildserver runs on linux, developers using Mac … no Windows and no Keil so far).

But unfortunaly, the bootloader example from the sdk (5 ... (more)

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## comprehension question Timer

Hi,

maybe i have a silly question, but i didn't programm timers before. I know how they work. But how is it possible that there are only three Timers in the 51822 and so many parts of the programm ... (more)

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## Problem programming custom PCBs on nrf51822

Hi, I tried my best to solve my problem via forum but unfortunately no success. I got nrf51 DK and played with it a lot. successfully program the samples and tweak them a bit. using SDK 5.1 and s110 ... (more)

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Hi,

can someone post tutorial how to do Over Air Download? I mean new SDK 4.4

I get error from cmd: ImportError: No module named intelhex

Regards, Konstantin

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## Disconnect Reason = HCI Error Code 0x2A(Updated)

Hi,
i am using nrf51822 to develop our product. I'll try to describe more details to make you understand more clearly.

STEPS:

1) While testing my project, I had trouble with bluetooth disconnecting too much.

2) I turn on ... (more)

2k
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## How to make the Nrf51822 flash jump successful without Softdevice? [closed]

Hi everyone, I trying to make a flash jump on Nrf51822 in my project. there are 2 programs(program A and program B) below. i am working on to make program A jump to program B correctly.

my problem is ... (more)

2k
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## nrf51822 Debug

Hi Team,

My application is based on nrf51822 SoC in which I am using BLE and UART interfaces.

There is single UART available and I have used it in communicating with other serial device. Now the problem is to debug ... (more)

2k
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## Long Attributes

Hi, I need to have long attributes. So I need 'Read Blob' operation for read and Queued writes ('Prepare Write' and 'Execute Write'). Does Soft Device for nrf51822 support mentioned commands?

Best regards, Artem Zemlyanukhin

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## Best place to get started

Hello everyone.

I've got the nRF51822 Evaluation Kit and Dongle. The heartbeat demo is working, so I got the toolchain -- Nordic, Keil, Segger under Win7 -- set up correctly, as far as I can tell.

I need to interface with ... (more)

2k
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## Reading a subset of data on a BLE server

I am definitely missing something here, but I can't figure out how to specify a subset of data to read from my peripheral.

Here's the setup: my nrf51822 device is a server, publishing a custom service with custom ... (more)

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## CMSIS RTOS with nRF51822 and S110

I'm looking into using the CMSIS RTOS on the nRF51822 with the S110 softdevice which I've used successfully with other Cortex M0 MCUs. I realize the S110 isn't well tested with various RTOS, but documentation indicates it ... (more)

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## Nordic nrf51822 project templates for Eclipse [closed]

Following along after my nrfjprog mini-tool for OS X, I've just released a plugin for Eclipse which exposes a template for setting up projects with the right settings for Eclipse native building (i.e. no Makefile).

My plugin builds ... (more)

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## How are you going about Production Programming for nRF51 parts? [closed]

Howdy,

We're gearing up to program about 4,000 nRF51822s. They'll get the BLE version of DFU plus a stable version of our own code. For future production runs, we'll likely have our partner in Japan program ... (more)

1k
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1
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6

## LDO current consumption, low voltage mode.

Hi Nordic guys,

How much is the current consumption of the LDO only (quiescent current), without DC / DC converter, in uA? How much is dropout voltage and PSRR (ripple rejection) ?

When powering nRF51822 in low power mode, LDO has a ... (more)

2k
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no
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## Maximum number of services

Hi,

Could you tell me please the maximum supporting number of services?

This number may be varied depending on number of attributes in each service and its size. So how can I evaluate maximum size of GATT table?

I decided ... (more)

1k
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## Insertion loss of BAL-NRF01D3

Hi,

I recently made a custom board using the nRF51822 and the LC network using values from the reference design. After fabrication and assembly, I tested the insertion loss of the resulting design and found it to be between 1-2dB ... (more)

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## PINCODE

Hi everyone,

Somebody knows if its possible and how to configure a Pin code to establish the connection between the nRF51 peripheral and a phone as a central? Something like 4 or 5 digit pass code.

Thanks!

2k
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1
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6

## File name too long

Hello: When I try to open an example project from nordik, keil doesn't open some files and I get the following error: "no source": Error: #5: cannot open source input file "............\components\serialization\connectivity\codecs\s130\serializers\ble_gatts_evt_rw_authorize_request.c ... (more)

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## Newbie having trouble getting started...

Hello, I just received my BMD-200 eval board today and cannot get any of the examples working. I started out trying to get blinky to work using GCC and the make files provided. I am able to successfully build the ... (more)

8k
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## nRF51822 Peripheral with Passkey [closed]

Hi, like many others, I'm confused with Peripheral Passkey Connection.

I'm playing with the ble_app_hrs, in order to be able to setup a Connection Passkey (for the moment I would like to have a static hard-coded passkey). The ... (more)

1k
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## HOGP / ble_app_hids_keyboard / iOS 7.1 / softdevice versions

Hi,

Been testing the ble_app_hids_keyboard that comes with the nrf SDK and have some questions.

Notes: - The PCA10001 EK is V2.2.0 (2014.04) - I downloaded the nrf SDK today (filename: nrf51_sdk_v5_2_0_39364), so I assume it's the latest ... (more)

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