23 questions
1
vote
1
answer
107
views
Is it possible to create a L2CAP Connection oriented Channel between an Android app and a BLE peripheral without using GATT
I use a standard EmptyActivity project in Android Studio with the following code added in the MainActivity.kt:
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(...
- 21
1
vote
1
answer
79
views
Do I need to do something special to disable EasyDMA on an nRF52840?
I'm wanting to repetitively read the SPI buffer as a master to check a status bit. I figure there's no sense in using the DMA when I can read the SPI RXD buffer directly.
A Nordic DevZone question has ...
- 35
0
votes
0
answers
63
views
Sampling characteristics of nRF52840 SAADC
According to the documentation, the SAADC (ADC) device has a maximum sampling rate of 200kHz (ksps), a value that is the sum of a minimum TACQ (acquisition time) of 3us and a conversion time of "&...
- 3,292
1
vote
0
answers
153
views
Undefined reference to mbedtls functions using Zephyr
I am building an application for a Nordic NRF5240 with Zephyr. In my security code I am attempting to derive a session key with the following function:
int derive_session_key(const uint8_t *...
- 4,159
0
votes
0
answers
27
views
code build errors with mcuboot and mass storage: nRF52840
I am trying to implement DFU(with USB&BLE) and USB Mass Storage with FAT FS filesystems on external QSPI flash. I am getting the following build errors- with SDK version 2.9.0
without mcuboot ...
1
vote
1
answer
140
views
Out of Memory on ESP32 with Zephyr 4.1
I have a Zephyr 4.1 application that is reading values from an MPU6050 and calculating Roll and Pitch.
I have been developing on a nRF52840DK and it builds correctly, as such I thought I would try ...
- 11
1
vote
0
answers
132
views
BlueFruit: No Arduino access to Service or Characteristic of nRF52840 devices
I installed a BlueFruit on XIAO Sense nRF52840 to handle 16+ BLE devices.
Bluefruit.begin(0, 8);
Bluefruit.setTxPower(4);
Bluefruit.setName("Bluefruit Scanner");
Bluefruit....
- 1,531
0
votes
0
answers
51
views
BLE Buttonless DFU App Crashes After Setting High on P0.27 and P1.07 – nRF52840 Custom Board (nRF5 SDK v16.0.1)
I'm currently working on a custom board based on the nRF52840, using SoftDevice S140 v7.0.1 and nRF5 SDK v16.0.1. I’ve integrated the BLE Buttonless DFU example (examples/dfu/secure_bootloader/...
0
votes
0
answers
66
views
How to setup openthread border router with multiple instances to handle different networks
I am new to OpenThread. I have set up a Raspberry Pi 3 as a border router and am using an Nrf52840 USB dongle as a radio to communicate with thread-end devices. I am using ESP32s as the end devices.
...
1
vote
1
answer
561
views
nRF52840 DK deep sleep using Zephyr
I used nRF52840 DK module with Zephyr with J-link programmer. The issue is the deep sleep does not work, and also not wake up using GPIO rising edge where interrupt is coming I see on data logger. ...
- 11
1
vote
0
answers
41
views
Allow only authorized connections to nRF52840
This is my current example code. It configures bluetooth, and then waits for bytes sent from PC client (service guid is 6E400001-B5A3-F393-E0A9-E50E24DCCA9E, and characteristic guid is 6E400002-B5A3-...
- 23
0
votes
1
answer
475
views
zephyr central NUS
I have two nrf52840 dongles and I want to get them to communicate with each other. It is worth noting I am very new to embedded programming, so be patient with me. So far I have gotten both the ...
0
votes
1
answer
345
views
BLE is not advertising on nRF52840 dongle; how can I configure this dongle using coding?
I am working on nrf52840 in which the BLE is not Advertising even after I am adding one parameter. I just want to add the parameters at the time of adding the 2 parameters. As you can see in picture
...
- 79
0
votes
1
answer
441
views
How to run Zephyr Echo Client-Server sample using nrf52840dk & nrf52840dongle?
I'm trying to run the Echo Client and Echo Server example of Zephyr.
I want to use nrf5284dk as server and nrf5284dongle as client (or vice versa).
I should also mention that my OS is Windows 11.
...
- 23
0
votes
0
answers
90
views
nrf52840 not achieving sending 2 Mbps
I am developing an accelerometer, which will send the data via Bluetooth to a tablet. I am using the nrf52840 and to program it I am using de nrfConnect SDK. I am sending an 80 position buffer each ...
- 17