# 78 questions

Tagged
• x
22
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I am trying to configure the CryptoCell on an NRF52840 to use AES-CBC encryption with PKCS7 padding. When I call the following function, it returns SASI_AES_ILLEGAL_PADDING_TYPE_ERROR:

SaSiAesUserContext_t ctx;

SaSiError_t err = SaSi_AesInit(&ctx,
SASI_AES_ENCRYPT,
SASI_AES_MODE_CBC,


Is Padding supported for AES-CBC ... (more)

7
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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)

14
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## sdk 14.2 BLE_UUID_TYPE_VENDOR_BEGIN [closed]

custom UUID will not advertise in sdk 14.2, S140 - see attachment

In s132 sdk13xx I added the scanrsp in the advertising _init function

Doing basically the same thing does not work in 14.2 allways fails with NRF_ERROR_INVALID_PARAM on ... (more)

35
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## Send and receive a string via access layer

Hi Team

I studied the examples for Bluetooth 5 mesh but i didn't find an example to communicate through access leyer. Can you give us some example lines of code, how this can be done? I'm working with ... (more)

40
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1
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1

## NRF52840 USB CDC ACM Secure DFU Bootloader Example

Hi,

I am testing the USB CDC ACM Secure DFU Bootloader example via NRF52840. softdeivce uses 5.0.0-2 alpha and uses SDK version 14.1.

I have a problem.

I ran Erase all through nRFgo Studio and programmed Softdeivce ... (more)

30
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## SD_MBR_COMMAND_IRQ_FORWARD_ADDRESS_SET is missing from s140

SD_MBR_COMMAND_IRQ_FORWARD_ADDRESS_SET is missing from the s140 MBR (nrf_mbr.h). Why is this gone? How do we implement the previous functionality without this MBR function?

72
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hi team, i am using nrf52840. some examples in sdk14.1. the program is compiling but i cant flash it to the device. i had compiled usbd_audio and temperature example. i got this error.

how to solve this?

34
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## There is no debugger connected with the PC. Nrf52840 PCA 10056 [closed]

Helllo, I have PCA 10056 board with me. Somehow, IMy Windows 10 PC is not able to recognize the board. The nrfStudio Go is not able to recognze the board. I remember I programmed board once and now I am ... (more)

72
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## Softdevice 140 not found when trying to flash a pca10056_S140 project via Segger Embedded Studio

Hi guys,

I wanted to try out the experimental "ble_app_att_mtu_throughput" on the newest nRF5240 DK. Using Keil, this project is to big for the free version. Since I knew that starting from SDK 14.1, each example project also has ... (more)

43
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## NRF52840, Can USB CDC and USB HID work simultaneously?

Hi,

I am working on one project.

The background I use now is using SDK14.1 and SDH version 5.0.0-2. The tool is using Keil.

I wonder if I can use two USB descriptors via one USB. My ... (more)

63
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1

hi team, i have made beacon services. in that we can read and write uuid major and minor after the connection is made. i can able see the new written values after the disconnection and connection also. but what i ... (more)

58
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1

## Which SDK should I use for NRF52840?

Hello ,

We are going to use nrf52840 for our product. We are going to use enhanced shockburst to transfer the data to other nrf52480. We are also performing sensor fusion. We have also a wifi module interfaced via UART. Which ... (more)

63
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1

## flash write

hello, Is there any examples to write beacon properties like uuid major and minor in flash memory when i edit the values from mobile app i want to advertise those values. in nrf52840 using sdk 14.1

83
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1
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1

## mpu 6050 with nrf52840

hi, i have downloaded nrf5-mpu-example sdk 13 from github. made necessary changes to work with sdk 14.2 for nrf52840. the kit is advertising when i check it in nrf connect app i am not getting any value. need help ... (more)

41
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## gyroscope services

hi team, i am using nrf52840. is there any hidden services placed in nrf connect app android for gyroscope or we want to create our own services. and also one doubt wat is the twi_scl and twi_sda pin for pca ... (more)

288
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## change phy in mesh

I'm working with the nRF52840 PDK and I'm wondering how to change the PHY (preferably to CODED) in a Mesh. Has that been implemented yet? Or when can we expect this feature?

96
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1
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1

## nRF52840 nrf528xx-ble-throughput-demo

Hello, I am trying to compile this demo with Segger Embedded Studio but compilation always fail with the error "Cannot open file C:/nRF5_SDK_14.2.0_17b948a/examples/ble_central_and_peripheral/experimental/nrf528xx-ble-throughput-demo-master/ble_app_att_mtu_throughput/pca10056/s140/arm5_no_packs/Output/ble_app_att_mtu_throughput_pca10040_s132 nrf52832_xxaa/Obj/ble_app_att_mtu_throughput_pca10040_s132.ind ... (more)

32
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1
vote
1

## having problem in services

hi team, i am using nrf52840. i have given permission to tx power read and write and also wrote on_write() in BLE_GATTS_EVT_WRITE. to control the bluetooth range everything works fine in tx power services. when i try to write all ... (more)

40
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## cant able to broadcast [closed]

hi, i am using nrf52840. with sdk 14.1. i am trying to broadcast my dk as beacon. with your neccessary examples. i have created my own services and started advertising. when i search my beacon through mobile app using ... (more)

89
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2
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## Is this the current state of support for Bluetooth 5?

I’ve been working in a small group to use the advertising extensions in BT5 to send 12 hours of temperature measurements in one advertising packets. We’ve been developing with the nRF2840 PDK, and trying loads of SDK and ... (more)

48
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## Package structure BLE Theory

Hi all , I am learning theory about BLE . I'm exploring the relationship between layer . But I am quite difficult to understand the package structure from upper layer to low layer . So , can you give me overview about package structure ... (more)

231
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1
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1

## nRF52840 long range demo

Hello,

I have see this demo

.hex are available witch is already nice, but I would like to get everything needed to reproduce it. Does someone know if it's possible to get the client application, the GPS cabling schema ... (more)

66
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1

## PHY update has no effect

I'm attempting to change phy in a program based on the UART example and am following the same process used in the att_mtu_throughput for changing PHY.

Calling sd_ble_gap_phy_request appears to be successful, a BLE_GAP_EVT_PHY_UPDATE is generated with successful status ... (more)

51
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2
1

## [nRF52840 & S140 & SDK14.1] USB MSC Example Data Transport

Hi,

I am currently testing with a USB MSC example.

FATFS_QSPI is disabled because the file system is not used, Subclass has also been modified to 0x06 -> 0xFF.

This is my main question. I created a TOOL on Computer (HOST ... (more)

117
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1
vote
2

## gatt error and gatt connection timeout

hi team, i am using nrf52840. sdk 14.1. when i connect the device and write the tx power value using nrf connect. the device is automatically disconnected and going to discovery mode. and i am getting the error 133 ... (more)

42
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1
vote
1

## [nRF52840 & S140 & SDK14.1] BLE & USB BULK

Hi,

I am working on another project. I want to make BLE and USB BULK communication operate at the same time.

My development environment is Keil, It uses nRF52840 and S140 (5.0.0-2 alpha), SDK14.1.

Simply put, Device ... (more)

58
views
1
vote
1

## changed the values of uuid, major and minor

hi team,

i want to read/ write uuid, major and minor value by nrf connect app. and whatever value written from mobile must advertising after that.(note: now i can able to read/ write uuid, major and minor using nrf ... (more)

48
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no
1

## Why 52DK(10056) reset when I connected the nrfUART app?

Hi, I add the NUS in the ble_app_hids_mouse example which the sdk version is 14.0. There are four services in the project: dis, bas, hids and nus. When I connceted the 52DK from the nrfUART app, a reset ocurred ... (more)

105
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1
vote
no

## mesh health model

How is the health model supposed to work? I'm currently doing some tests with the light switch example and I don't really understand the different roles of the nodes in the health model. Does the health client send ... (more)

94
views
1
vote
1

## change the values of uuid

hi team, i want to edit my uuid, major and minor. i searching for the example. i am using nrf52840. i didnt get any example. but there is a example for nrf51 ble_app_beacon_bcs. is there any example like this for ... (more)

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