# 5,879 questions

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## NRF51822 AES HW module clarification

hi,

I was reading documentation and forum but failed to get a clear picture how AES module work. So far my understanding is:

There are two ways to access AES either in Softdevice using sd_ecb_block_encrypt or using directly from code ... (more)

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## nRFGo Studio crash during launching

Hi, Since version v1.16, nRFGo Studio don't start. The installation is correctly done, but when I launch software nothing occured. I can see it briefly in process list.

The version 1.14 launch correctly. I'm working on ... (more)

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## sending with sd_ble_gatts_hvx()

Hi all,

I am trying to send data(rssi+MAC address) from GATT server to GATT client using sd_ble_gatts_hvx(). I added the service and the characteristic into the ATT table. I want to send data just when establishing a connection ... (more)

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## Starting stdk setup for nrf51822

Sir, We designed a prototype card including "rfd22301" containing nrf51822. We will use in mass production directly the nrf51822. We will use the BT as a transparent UART port to communicate with our mobile software.

We need the stack S110 ... (more)

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## nrf51822 ble read the data send from smartphone

Hi all,

I am new to nRF51822,now I want to used a simple ble application to send a data,and nRF51822 ble device read this data to control RC servo motor ,for example app send value 1 then RC ... (more)

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## Can't get a ADC result that makes sense

Hi,

I'm working on a simple ADC application where I sample using analog channel 1 and then read the value through the debugger. However my results are nonsense. I have connected a potmeter with VDD on the right pin ... (more)

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Hi, I am developing an application to capture data on a PC over ANT+ using the ANTUSB-m as slave and the nRF51 DK as master.

In order to test my program I want to be able to measure a GPIO ... (more)

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## S120 - incomplete advertising data (no service data, name)

Hi,

I'm developing beacon-scanner software using nrf51822 and S120 softdevice. Using softdevice v1.0.1.

I need to scan ibeacon type advertising devices and get service-specific data from them, which is broadcasted.

I cannot get some data on S120 ... (more)

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## bluetooth 4.1 features

​i have broadcom bluetooth usb 4.0 dongle..which part of bluetooth stack it contains...?to support simultaneous master and slave connections will it need any firmware update...?

whether linux kernel and bluez supports this simultaneous colnnections...? or i have ... (more)

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## DAC 7562 With NRF51822

Hi, Basically, I have a DAC 7562 chip with inputs connected to pin 0.17(SYNC pin), 0.18(SCLK pin), 0.19(TX/Din pin), 0.13(CLR pin), 0.14(LDAC pin) with outputs connected to an op-amp ... (more)

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## Concurrent broadcast in S130 with both central and peripheral connections

We are using S130 v0.9 stack,

and when BLE device A is connected as peripheral of iphone

and central of BLE device B at the same time

iPhone --> A ---> B

The err_code ... (more)

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## What is role of bootloader?

I looked up method about Transferring files.

and became interested about the example of dfu.

if I understand dfu example, I think it would help to me

so..

What is role of bootloader when I use DFU?

if I update ... (more)

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## Anyone do successfully DFU OTA for SDK7.0.1 & Softdevice S110 V7.1.0 ?

Hi, I purchased Nordic new reference platform nRF51-DK(pca10028) and try to work for DFU OTA. In my test, first of all program S110 V7.1.0 by nRFgoStudio and downloads bootloader/dual_bank_ble on Keil. nRF51-DK starts advertising "DfuTarg" and ... (more)

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## NRF_ERROR_NO_MEM

Hi, I have created up to 5 custom services with several characteristics (4 at maximum) each one. They all use the same base UUID. The problem I'm facing now is that when I execute 'services_init' function, the function 'sd_ble_gatts_service_add ... (more)

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## twi_sw_master.c compilation error

Hello,

I am working with the nRF DK trying to read a sensor over I2C. I wrote some code in Keil uVision and I finally could read the sensor. The problem now is, for some weird reason I can't ... (more)

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## How to keep HRM device alive (win_0.3.0-alpha API)

Here's my config:

Dongle part :

• PCA10000
• Soft device : s120_nrf51822_1.0.1_softdevice.hex
• Application : nRF51-ble-driver_win_0.3.0-alpha/s120/hex/hexconnectivity_1M.hex

Peripheral part :

• PCA10028
• Soft device : s110_nrf51822_7.1.0_softdevice.hex
• Application : hex file compiled from ble_app_hrs_s110_pca10028.uvprojx

PC: Simply compiled ... (more)

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## Help me to choose nRF platform that best suits to my needs

Hello there,

I'm in doubt which of your various products to choose and integrate into my system. Let me give you some details about it:

1. The system is battery powered (3V CR2032 coin cell battery) and should be able ...

(more)

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## how to count pulse with nrf51822

i am very confused about how to count pulse by using nrf51822? I am going to make a heart rate counter, but i don't know how to config registers to achieve this function. could you please give some sample codes?

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## Could we get rid of sd_rpc_serial_port_name_set?

I'm using s120_nrf51_ble_driver on PC.

To connect the BLE dongle, we need to COM port number to be known (parameter of sd_rpc_serial_port_name_set). Is there really no way to get rid of that when one single dongle is connected to ... (more)

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## Mapping HWID to revision information

This thread provides some references for those of us who need to have firmware that runs on multiple releases, but don't necessarily know what revisions are in the field. Unfortunately, the new release 2.0 of nWP-21 removes all ... (more)

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## Are there any cases soft device resets system?

I encountered a strange problem system reset. My application runs on iOS or android. My device was connected by iPhone 6 plus(128G) with iOS 8.1.2. ANCS was turned on. I have never seen the same problem by ... (more)

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## nRF51 DK Debug Out Connector

Hi all,

I cannot find the exact connector to use for the P19 Debug out header on the pca10028 board. The one I have has the plastic around too big so it doesn't fit. Is it possible to know ... (more)

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## PWM in nRF51822

Hi, I am using nRF51822 to generate two channels PWM to control motors. Softdevice is V5.2.1. But I found the the Blue tooth connection sometimes dead if the PWM frequency is high. I set the frequency to 300Hz ... (more)

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## How do I know that characteristic has been subscribed to?

I've tried getting a notification of subscription from a bluetooth event handler like so:

1. ble_evt_dispatch() is being called from main:

static void ble_evt_dispatch(ble_evt_t * p_ble_evt)
{
on_ble_evt(p_ble_evt);
ble_conn_params_on_ble_evt(p_ble_evt);
ble_MY_SERVICE_on_ble_evt(&MY_SERVICE_handle, p_ble_evt); // <- My service's event handler
}

2. My service ...

(more)

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## TWI with S110 softdevice Enabled

Hello Everyone

I want to implement TWI interface in my project.Presently I am using Keil UV5 IDE, PCA10028 Development board and s110 7.1.0 softdevice, along with that PWM , UART and ADC peripherals are being used. I search ... (more)

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## Getting started, can't connect to nRF51 dev board

Hey guys,

Sorry to a basic question here, but it's been a few hours and I still can't get a connection to either of two brand new nRF51 dev boards, trying both on WindowsXP and MacOS.

See attached ... (more)

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## Is it possible to change GAP device name in runtime without system reset?

Hi, I am developing on a nrf51822 based board using s110 softdevice v. 6.0.0. In my program I need to change the bluetooth GAP device name in runtime during connection session. I tried to change it by sd_ble_gap_device_name_set ... (more)

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## IoT SDK with mbed

Can I use nRF51 IoT SDK with mbed tool chain?

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## nRF8001 Setup Question

Hello,

Working on my own code to integrate an arm chip with the nRF8001, after I read the device status, which says it's in Setup-mode, I'm sending the setup configuration to the device, as specified in services.h ... (more)

82
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## nRF51822 - BASIC Questions - Getting Started

Hi,

So am new to all this BLE stuff, I have been using the nRF24L01 modules but want to move to the BLE variant, nRF51822.

I am these days figuring out the toolchain and stuff and what software etc I ... (more)

#### Statistics

• Total users: 4209
• Latest user: pvh
• Resolved questions: 2837
• Total questions: 5879

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## Recent questions

• ### NRF51822 AES HW module clarification

Posted 2015-03-04 17:35:43 by Larry
• ### sending with sd_ble_gatts_hvx()

Posted 2015-03-04 17:27:54 by mohBOSS
• ### Starting stdk setup for nrf51822

Posted 2015-03-04 17:04:42 by catelain
• ### nrf51822 ble read the data send from smartphone

Posted 2015-03-04 16:36:52 by Peter
• ### GPIO ADC and S210

Posted 2015-03-04 16:14:22 by DazzaNL