# 4,012 questions

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## Nrf ESB using nrf_esb_suspend, nrf_esb_disable functions

Which case i have to use nrf_esb_suspend function instead of nrf_esb_disable/enable?

What function i have to use when i change radio RX to TX mode, changing radio channel?

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## BLE multi communication

Hi, Is it possible to have multiple BLE units that can talk to each and any of the others. ie if two come in close proximity they can connect and communicate a small amount of data ie Rssi?

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I'm trying to use a the COAP server example from SDK 14.2 running on nRF52DK. I've got a RPI3 acting as a router between my Ethernet network and the 6lowpan/BLE link.

I'm running a python ... (more)

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## ANT tx slots missed during channel scanning

I have an NRF52832 configured with 3 ANT+ channels (and BLE). 2 are master and 1 is slave. Anytime the slave channel is opened and scanning for a master the 2 master channels miss a large number of transmission time ... (more)

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## Everything You Need to Know About Printed Lanyards

Printing techniques vary from a hot stamp (basic quality) and silk screen (medium quality) to a more costly dye sublimation process that results in a premium quality print. Printed lanyards are also available in a wide variety of patterns including ... (more)

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Hello, deavteam. This is MANGO.

The Capacitive Touch on the nRF52 series blog post is really impressive.

I'm planning to start a haptic driver project using TI's DRV2605 driver, an LRA (Linear Resonant Actuators), and Nordic's nRF52 ... (more)

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## LPCOMP Interrupt Resets MCU (nRF51-DK)

Hi All,

I am new to nRF development and purchased the nRF51-DK (PCA10028). I have successfully experimented with the examples for ble_app_uart and lpcomp. My Application will require a a combination of these two examples. As such I have added ... (more)

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## ttl converter + NRF52832-QFAA-R7 (QFN48)

Hello. I have a ttl converter (https://goo.gl/images/uFSPHN). Can I write a hex file through it? What are the possibilities to program so as not to buy a debug card?

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Hello, I need to read SAADC input pin of nRF52832 that is multiplexed and wonder what the optimal strategy is to implement that.

Especially: setting a ppi channel so that a timer compare event is triggering sample task in SAADC ... (more)

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Hello I am using nrf51822 .The function of DFU has worked well,but some weird problems puzzle me. 1、After DFU is successful,what is nrf51822's working state? Does it reset?From bootloader?Or directly enter into the BANK1 ... (more)

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## 6KRO protocol

Hi everyone,

Currently, my team is developing a BLE keyboard which uses 6KRO protocol. Are there any examples for the 6KRO protocol using nRF52 chips?

Thanks!

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## SDK14.2 DFU power cycle issue

Situation: Trying to upgrade previous versions of the SD and BL (V3.0.0) to (V5.0.0) Problem: device power cycles after a new application is flashed to the device into the V5.0.0 SD and BL.

Steps ... (more)

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Hello, I am using nrf52840 PDK, sdk 13.0.0. I managed to read accel, gyro data from the MPU9250 using MPU library based on this example. However, I got magnetometer reading 0. I've checked this question and this ... (more)

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## Support for ANT Blaze

I want to implement a multi-protocol firmware stream on nRF52 chips. Does the S332 softdevice ANT Blaze for MESH applications?

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## Mesh Health Model

The mesh health model state is not restored following a reboot in the current version of the Mesh SDK using the light switch example.

According to the documentation, the configuration should be restored automatically so I think this is a ... (more)

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## Power Profiler Kit PPK with DK RTT debug out not working.

Current latest JLink firmware won't allow PPK working with DK RTT debugging.

The cause is the JLink chip on the DUT board won't put the SH_SWO/SH_SWCLK/SH_SWDIO in hi-Z mode when SH_VTG is grounded, which prevents the ... (more)

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I am having problems getting my client to connect to a peripheral I have gone thru the central tutorial and tried many things here on the devzone to no avail.

state: s140, multirole_lesc sdk 14.2

On the peripheral side ... (more)

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Hi all, I'm currently building a bootloader suitable for Dual Channel DFU and SD132. It is on nrf52832, currently on PCA10040. Although the linker script works, and creates a hex file, I am left with an app_error_code 1 after ... (more)

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## app_twi_perform fails with NRF_ERROR_INTERNAL

Hello Nordic Forum!

Our product relies heavily in the TWI Bus, we use it to communicate with different sensors periodically. The most "important" one is read once every 4 ms.

Additionally we have a TWI controlled IO expander, which has ... (more)

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## NRF24L01+ ACTIVATE COMMAND

The question is related to "nRF24L01P_Product_Specification_1_0.pdf" datasheet in "https://www.nordicsemi.com/eng/content/download/2726/34069/file/nRF24L01P_Product_Specification_1_0.pdf" and to NRF24L01P chip.

In the Page 51, ACTIVATE command is not present. What happens if use ... (more)

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## Store beacon parameters in flash (fstorage)

hello, I modified the beacon example that allows me to modify major and minor value from mobile app, but when i restart the nrf52840 dev board, the modified values are reset to the their initial values,

so, how can i ... (more)

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## LSM9DS1 driver for nrf5 SDK

Hi,

I've been searching for a LSM9DS1 driver compatible with the nRF5 SDK >= 14.0 but I couldn't find any which uses the nrf_drv_twi so I started to write my own but it takes quite a bit of ... (more)

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## What's static OOB in bluetooth mesh?

Hi all !!!

I understand Output OOB, Input OOB. I case of No OOB, value which is attached to Confirmation value is 0x00, what happens in case of static OOB?

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## How to use PCA10040 as Dongle Scanner

Hi,

I'm trying to have a PCA10040 working as a scanner of BLE peripherals to be able to connect to my own BLE Nordic device, write a characteristic and close the connection. To do that I followed those steps ... (more)

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## Drivers from nRF5_SDK to Mesh SDK

Hello,

I would like to add the ST7735 driver from the nRF5_SDK to the Mesh SDK along with the necessary components (SPI,..). I copied the entire components directory to my Mesh SDK. But I have an issue with the cmake ... (more)

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## Bug report: BLE multirole example SDK 13.1

Hello,

I'm working on a project based on the ble_app_multirole_lesc example, under examples/ble_central_and_peripheral/experimental and I found a bug.

In ble_evt_dispatch when there hasn't been a connection yet and the advertising times out, the event is not ... (more)

17
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## P0.09 and P0.10 on nRF52810

Hi,

I'm developing on nrf52810 using the SDK14.1.0 and I've take as starting point a template application that targets nRF52810 running on the nRF52 Development Kit. But I'm working on nrf52810 hardware, NOT the nrf52DK ... (more)

6
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## Neither a disconnect nor a timeout after a LL_TERMINATE_IND

Hi,

we have an issue, related to an older post, but we don't get the timeout outlined in that post.

Our setup: we use the nRF52832 with the S132 V4.0.2 in the peripheral role and a iPhone ... (more)

19
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## Erase multiple pages not working(nrf51822)

I want to erase selected pages from the NRFflash memory (Not whole flash).

I have defined one function for NRF memory erase. In that, I have followed following sequence of operations:

for (Number of page erase) {

1. Set NVMC mode: Erase ...
(more)

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## Suggestion for Custom nRF52832 specially RF Antenna

Hello Sir,

we have designed custom PCB using nRF52832, I am little confused for is it OK. I have attached top and bottom layer layout of my PCB please sir review it and is it ok like antenna and Specially ... (more)

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## Recent questions

• ### Nrf ESB using nrf_esb_suspend, nrf_esb_disable functions

Posted 2018-01-20 19:31:28 by Amigo
• ### BLE multi communication

Posted 2018-01-20 18:30:08 by paul
• ### ANT tx slots missed during channel scanning

Posted 2018-01-20 18:27:27 by dlip
• ### Everything You Need to Know About Printed Lanyards

Posted 2018-01-20 18:01:16 by Fermin Murtagh
• ### LPCOMP Interrupt Resets MCU (nRF51-DK)

Posted 2018-01-20 15:32:47 by Anthony