# 10,579 questions

no
views
no
no

Hi,

i have following Problem: I want to flash the example "ATT_MTU Throughput Example". I work with the latest s132 v5.0.0 soft device and i flashed it with nRFgo Studios. Now i want to Flash the example with ... (more)

2
views
no
no

## nRF 52832 first time programming

Hi, I'm designing a new PCB using nRF52832 and I'm wondering what is the way to programm it for the first time. I'm connecting pins 25 (SWDCLK), 24 (SWDIO), 31(VSS to GND) and 36 (VDD) to ... (more)

2
views
no
no

## nRF5_SDK_11 incompatibility with ANT s212_nrf52_2.0.1

I'm attempting to build the ANT+ examples within SDK 11 and am hitting an issue in compile:

C:/Compilers/nRF5_SDK_11.0.0_89a8197/components/ant/ant_stack_config/ant_stack_config.c:30:17: error: macro "ANT_ENABLE_GET_REQUIRED_SPACE" requires 4 arguments, but only 3 given ... (more)

8
views
no
no

We're using nRF52 to read two sensors data: one is an ADC chip using SPI; the other is a PPG sensor using I2C. MCU sampling rate is 250Hz, meaning every 4ms, MCU will poll the two sensor chips in ... (more)

3
views
no
no

## S332 BLE CONNECT IOS DEVICE

i used SoftDevice s332,and download the example:<InstallFolder>\examples\multiprotocol\ble_ant_app_hrm i find that using android device can connect pca10040 ble well,but use ipad or iphone(lightblue) both can't connect. i want to know how to solve ... (more)

3
views
no
no

7
views
no
no

## app_uart_fifo.c compiling error with nRF5_SDK_12.2.0_f012efa

Dear Nordic Developer,

I can compile and ran examples of uart, saadc, pwm_driver, pwm_libraries. Now I would like to include uart in pwm_libraries to get inputs from PUTTY (COM port) but I got compiling error with app_uart_fifo.c . I added ... (more)

7
views
no
no

## How many centrals can be connected?

Hi. I'm using nRF528332, SDK13, S132.

I'm making multi-link peripheral refering to "experimental_ble_app_multiperipheral".

This example code says as below.

So i want to know how many centrals can be connected at the same time?

As ... (more)

17
views
no
1

## DFU without interface MCU

Hello Nordic community,

I have a question about implementing DFU on the custom board. By looking at NRF52 DK and reading explanation in Nordic infocenter, I can see that button 5 (IF BOOT/RESET) is connected to the interface MCU ... (more)

10
views
no
no

## Problem with BLE read data

Hello ! I'm beginning work with BLE . I have a project in which nrf51 is a central. App from smartphone will sending to central any key for example "3214941E0" when central accept this key for example led light up. I ... (more)

8
views
no
no

## Program external board using NRF52 DK P20

Hi,

I am have a custom breakout board that uses the NRF52832 chip and I was able to program it using the J-link programmer and seperating ribbon cable to expose the Vtarg, GND, SWDIO and SWDCLK lines.

Now I want ... (more)

9
views
no
no

## JTAG Debug Specification for nRF24LE

Hi Nordic team,

Do you publish the JTAG Debug specification for nRF24LE? I am interested in developing a low-cost debug probe for nRF24LE for SDCDB.

10
views
no
1

## How to fetch peer's base uuid?

Hi experts,

I have just tried lbs example. I saw in the ble_lbs_c.h, the base uuid and service uuid are defined for the peripheral peers who are going to be connected. However, if I don't know these uuids ... (more)

14
views
no
1

## Block of NRF52 Flash memory

On datasheet of nRF52, i found that a page have 8 blocks. But i could not find the usage of the block. Anyone know the usage of this?

11
views
no
no

## Buttonless Secure DFU with WDT needs DFU twice

I use nrf51822xxAC，SDK 12.2，Buttonless Secure DFU and WDT in application.

I added NRF_WDT->RR[0] = WDT_RR_RR_Reload; to the wait_for_event loop in the DFU to pet the dog.

But it needs to DFU twice to let the chip ... (more)

109
views
no
no

## If no use bonding and secure fuction may I just mask the pm_conn_secure in central device project

Hi I use nRF52832 and SDK13 and Central Device project. and my device has not bonding function so may I mask my central device pm_conn_secure call here is my part of code

#define SEC_PARAM_BOND  0//1
static void peer_manager_init(void ...
(more)

265
views
3
2

## Maximize range on nRF52840 pdk

How do I maximize range for BT5?

I have two nRF52840 pdk units and I have loaded the ble_app_att_mtu_throughput app and tried it out. I have been seeing around 70 meters range before the link drops out. What can I ... (more)

19
views
no
no

## [nRF52832] Can DETECT signal be edge detect?

Hi all,

I am thinking of using a GPIO pin's "SENSE LOW" to wake up my device from SYSTEM OFF mode. In order to avoid the device keeps waking up in case the pin stays low (e.g. a ... (more)

14
views
no
no

## SDK 12.2 dual bank DFU

Hi all, Is there any DFU example using dual bank to the SDK 12.2? The secure bootloader example is for single or dual bank? . Sorry for the question it is no clear to me.

Thanks

8
views
no
no

Hi all:

I use sdk11.0 <nRF5_SDK_11.0.0_89a8197\examples\ble_central_and_peripheral\experimental\ble_app_hrs_rscs_relay> this example, scan heart sensor , sdk return BLE_GAP_EVT_ADV_REPORT event, I print the adv_report data, find the heart sensor name is not in the data ,please see picture.

12
views
no
no

## Example code for Google Fitness using nRF51/52 DK?

Does anyone have experience with using nRF52 as Bluetooth sensor for Google Fitness? If so, is there have any existing example code from Nordic SDK ... (more)

12
views
no
no

## is it possible port zephyr working with Softdevice ?

Hello

in the zephyr 1.7 release there have NRF52 and NRF51 porting without softdevice . in the SDK 13 ,there has Freertos example working softdevice ,is there any plan or roadmap to porting zephyr working with softdevice or is it ... (more)

10
views
no
no

## nRF52840 Coded PHY for long range application

Hi

I have got two nRF52840-pdk for long range application design. After reading posts here I realized that the softdevice s140 can only change PHY to CODED after a connection has been established. It does not support advertising or scanning ... (more)

60
views
3
2

## SWD JTag to a Sparkfun nRF52832

Hi

I have gotten a Nordic PCA10040 hooked up to a Sparkfun nRF52832 as described near the bottom of the page here: https://learn.sparkfun.com/tutorials/... (Resources and Going Further).

I have also got a working build environment and ... (more)

26
views
no
1

## FDS initial state

Hi, Id like to understand the FDS state after flashing the device. Im trying to check if the record exists then I use it, otherwise I write a valid info into the record. For some reason after flashing the record ... (more)

37
views
no
2

## formatting an uSDcard from ext4 to fat32

Hi, I have a problem that when formatting an uSDcard from ext4 to fat32 it gets with both file systems.

(more)

12
views
no
no

## nRF5 SDK v13.0.0 ble_app_att_mtu_throughput example

Hi,

what is the default tx_power value in new v13.0.0 SDK in the ble_app_att_mtu_throughput example?

I can't find the use of the sd_ble_gap_tx_power_set() function which was present in the 13.0.0-1.alpha SDK with the default ... (more)

27
views
no
1

## SPI with BLE

Hello All

Could you please guide me. i want implement BLE with SPI interface...if i sent any command via mobile Bluetooth..then NRF51 DK should receive the Command and then it should transfer the data via SPI interface .could ... (more)

5
views
no
no

## Not able to flash BLE with SPI

Hello All

softdevice version "s130_nrf51_2.0.1_API" sdk version "nRF5_SDK_11.0.0_89a8197

i am try to flash BLE with SPI code i am not able to flash the hex..while flashing i am facing some problem...and more thing if ... (more)

16
views
no
1

## Getting started with wearable development using nRF51822

Hi, my first post here. I'm a undergraduate student and newcomer to this field. I've some programming background but few in electronics and embedded systems (so probably this question will be to silly for most of us).

I ... (more)

#### Statistics

• Total users: 17303
• Latest user: Natalie Heffron
• Resolved questions: 8878
• Total questions: 20843

## Recent blog posts

• ### Getting started with Nordic's Secure DFU bootloader, a step by step guide

Posted 2017-03-20 17:13:52 by Hung Bui
• ### From Nordic UART Service to MicroPython using PolyMCU and Gattlib

Posted 2017-02-27 16:40:00 by Olivier
• ### Throughput and long range demo

Posted 2017-02-28 16:48:25 by Ole Bauck
• ### nRF52840 long range demo

Posted 2017-02-14 12:46:03 by Ole Bauck
• ### Setup and Running the OpenMesh DFU on the nRF52 DK v2.0

Posted 2017-02-06 22:33:25 by martindavidb

## Recent questions

Posted 2017-03-27 08:34:19 by Bene
• ### nRF 52832 first time programming

Posted 2017-03-27 08:20:50 by Enrique
• ### nRF5_SDK_11 incompatibility with ANT s212_nrf52_2.0.1

Posted 2017-03-27 07:50:39 by syrinx
• ### S332 BLE CONNECT IOS DEVICE

Posted 2017-03-27 05:07:33 by jwx