22,463 questions

I'm an intern in my second year for a bachelor in computer engineering. I've been working with the nRF52832 development kit as part of my assignment. I was looking through Nordic's events when the tech tour caught ... (more)

Hello, I get the

"ERROR: The --family option given with the command (or the default from nrfjprog. ini)

ERROR: does not match the device connected."

message after entering pretty much any command, erase, program etc., for example, this one:

nrfjprog ... (more)

Hi, I have recently acquire a nRF52840 preview development board to prototype a USB MSD. With the example provided in the SDK V13, I tested the write speed and it was far from usable.

I am not sure if it ... (more)

Hi,

I'm trying to use an existing NRF51822 mbed codebase on a new NRF52832 product and am having some issues.

First of all, it seems that I can't use mbedlib, but need to update to mbed-os because BLE ... (more)

Hi,

I have a device with nRF52832 and firmware is composed of Bootloader (BL), softdevice (SD) S132 v2.0.0, application and I am using SDK 11.0.

I have created different firmware updates (BL, SD, App, BL+SD, etc ... (more)

Hello, Help me, please.

I am testing ble_app_uart. Softdevice is S130 and SDK is nRF5_SDK_12.2.0_f012efa.

My development board is Waveshare's NRF51822 Eval Kit.

When I test the ble_app_uart firmware, I cannot send more than 278 packets to ... (more)

Hi;

I do not know the BLE Event(DFU bootLoader/SDK Sample) so I will ask you a question.

The environment using is below.

SDK v10.0.0 (Sample code/dfu_transport_ble.c)

SoftDevice S110&S120(v8.0.0?&v2.1 ... (more)

Hi

So far I have been using the examples from Keil 5 pack installer. Now I tried loading some from the SDK example folder and I have issues with includes. What do I need to adjust to have those includes ... (more)

Currently I am using the NRF52 device to connect with a custom peripheral. The current goal I am trying to reach is toggling an LED by sending the command 0x8900 through Service UUID 0x0001 with Characterisic ID 0x0002.
This is ...
(more)

I am having an app_timer (nRF52832 / SDK12.0.0) that's interval must be changed during its lifetime. I am using following code to change the interval:

app_timer_stop(m_timer_id);
uint32_t interval = APP_TIMER_TICKS(interval_ms, APP_TIMER_PRESCALER);
app_timer_start(m_timer_id, interval, NULL);

So far ... (more)

I have 2 board nrf52840 DK, I now I want to send file ( 1~2 Mbyte) from board_1 to board_2 without use UART. where can I get example to do that ? PS: I also need example with different kit or ... (more)

Hi,

I've seen that SDK 12.3.0 contains a new version of the application sample using the Eddystone protocol for BLE. I would like to know if this version is compatible with nRF51 chips as it was said ... (more)

I am attempting to do a BLE firmware update via command line tools in an attempt to automate programming in a script file. I have zero problems performing an over the air dfu when using nRF Connect, but I can ... (more)

Hi,

I am trying to figure out the reboot reason on an NRF52 in order to solve it in the best way.

We have a design with a dual supply 3.6V/5V going through a 3V LDO. Problem is ... (more)

How can I relocate or manage the transition between the bootloaders interrupt vector map and the applications interrupt vector map which will be at different addresses in FLASH. On the M3/M4, you can remap this but presumably on the ... (more)

Hello,

i have a BLE Peripheral that has a service that we use to simulate UART over BLE. Very similar to the nRF UART. I consider the time to establish a link that allows to send asynchronous data to be ... (more)

Hi,

I'm trying to use the command "mlme_start_req" to setup the device as a pan coordinator to send beacons to the others devices in the network, but after submit the command the callback is not called. For instance, if ... (more)

wqewqeqwe.PNGI want to program the nrf52 chip using J link Edu -SWD mode. I actually connected the SWDCLK, SDI, and Vtref and GND of Jlink EDU programer to SWDCLK,SDI,3.3V& GND of nrf52 in my Self ... (more)

I have written a simple implementation for using the ccm module with mesh. It encrypts and decrypts as it should but when enabled the processor makes a soft reset. It happens quiet often but not on every sent or received ... (more)

Currently, we are trying to have the nRF51 chip working with a type of capacitive pressure sensor. We did quite a lot of work on searching proper circuits of reading the capacitance of the sensor, including capacitance voltage divider, charging ... (more)

In nRF5 SDK 12.1.0 a bug was fixed in nrf_drv_wdt_init(). Watchdog timeout could not be larger than 131 seconds because of (x * 32768) multiplication before. This bug is again present in SDK 12.2.0, 12.3.0 ... (more)

I have not gone into much details of 51822. while interfacing BLE to any MCU, Is it possible to add interrupt lines from BLE module to MCU to receive interrupts in MCU. Like, if we added one RX INTR line ... (more)

Hi,

We're working on the connection params negotiation. Therefore we need a timer to go off 2 seconds after connecting to send a conn params change request.

Most of the time this works as expected. We toggle some pins ... (more)