24,451 questions

My goal is to generate the clock signal of some particular frequency. I am using nrf51822 DK and used the timer example code from github: https://github.com/NordicSemiconducto.... With timer prescalar set to 0 , the output frequency should be ... (more)

I would like to utilize six Sampo S1 readers (yes, I only read for now, I know they can do much more) to count people entering and leaving a conference.

I am looking for the correct byte sequence to send ... (more)

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After flashing light control server or client app on PCA10028 app crashes with HARD FAULT.

Steps how I built the app:

Using freshly downloaded MESH SDK 0.9.1.

ble_mesh_v0.9.1-Alpha>mkdir build
ble_mesh_v0 ...

Hello,

I'm trying to setup a nRF Cloud Bluetooth gateway using my PC (with openSuse 42.2 64bits and rRF Connect v2.1.0 + nRF Cloud Gateway v0.9.7) and a nRF52 DK and I'm facing some ... (more)

hello,

my custom hardware includes 10 buttons connected to 10 GPIOs of a nRF52832. The nRF52 is placed in low power or eventually system OFF all the time, waiting for a pin state change on any of the 10 buttons ... (more)

Hi, I'm contemplating ways to drive a small RGB LED matrix with the nrf52832 in a really space-tight project. Ideally without any external components. I'ts maybe around 40 RGBs (5x8 grid, 120 individual LEDs to drive).

Charlieplexing would ... (more)

Hello dear community !!! I have long wanted to try the nordic chips. I took nrf52840 -preview dk and arducam. I'm still not very familiar with working with the nordic chips. But I wanted something impressive!)). So I decided to ... (more)

Hi

We are trying to port our app from softdevice v3.0.0 to softdevice v5.0.0. We note that the data length and bandwidth configuration procedure has changed drastically, including the introduction of the sd_ble_gap_data_length_update() function. My question ... (more)

hello i am using the nrf52840.

how i can set the 4Khz frequency in low_power_pwm.

low_power_pwm_config_t have period parameters. which value i need to assign to generate the 4Khz Siganl.

before i used the APP_PWM which is much more easy ... (more)

I am evaluating the sdk14 ble_app_uart example. I am able to run this code and connect to this uart service but do not see messages get passed to the uart pin. Only when I power cycle the nrf, then it ... (more)

I am looking at a Bosch GLM50C and when i connect with nrf connect on IOS I can only see device information and a custom service, on android I can also see the generic access service, but when I use ... (more)

I'm trying to reduce the RAM requirements of the softdevice for my application and am looking at some of the options in ble_cfg_t.

What does ble_cfg.gap_cfg.role_count_cfg.central_sec_count actually do?

documentation states

/**< Number of SMP instances shared between ...

According to the NRF52810 datasheet ,The RADIO contains a 2.4 GHz radio receiver and a 2.4 GHz radio transmitter that is compatible withNordic's proprietary 1 Mbps and 2 Mbps radio modes in addition to 1 Mbps Bluetooth ... (more)

Hi

I'm migrating to SDK14 currently. My program seems to hit an infinite loop (or something of the sort) after I call my_service_on_connect() from my_service_on_ble_evt. Here are the two functions:

void ble_my_service_on_ble_evt(ble_evt_t const *p_ble_evt, void *context) {
    ble_my_service_t *p_my_service ...

Hi,

I'm trying to evaluate the IAR simulator, and I'm using it w/ nRF52 samples. Besides getting errors due to the errata and system init, I'm not sure what are the use cases for this simulator. If ... (more)

Hi

I'm migrating to SDK 14 and have my service's on_ble_evt() function registered. However, p_ble_evt->header.evt_id == 65535 (0xFFFF) for every evt, so I think I'm doing something wrong. Every connection cycle I get about five of ... (more)

I want to change the light-control example given in mesh SDK such that instead of using buttons to trigger messages, I want to connect client with mobile and control servers through mobile. At beginning, I am trying with one client ... (more)

Hi

I'm trying to create a custom ble service with 4 notify characteristics. Everything works with one characteristic, but when i add the other the DK hangs.

I'm using SDK11 with S130.

I made it work with two ... (more)

hi, Nordic I'm using your nRF51-DK(PCA10028) board, on android, i disconnect connection by call BluetoothGatt.disconnect (https://developer.android.com/referen...), it's work fine on almost android phones, but on some ones (such as xiaomi4LTE ) we can ... (more)

Hi

I have a PCA10040 V1.1.0 that my company has been using to flash test code onto other nRF52832 chips (I don't know the details, but it has wires attached to the debug out). I'm trying ... (more)

Using nrfConnect the one charactierisitc (128uuid) shows CCCD handle inabled on the nrfConnect (the 3 down arrows) The device structure shows a value for the cccd handle. But there is not a ble_gatts_attr_md_t cccd_md; structure in the char_add function. How ... (more)

Hi,

I'm using nRF5_SDK_13.0 on nRF52840 based on ble_app_hrs_rscs_relay example. I use it to connect a bluetooth 4.0 device and it's ok now. Also I have a bluetooth 5.0 device which use long MTU packet ... (more)

Hi!

I'm having a little trouble with my measurements. A little situation sketch:

I'm using two nRF51822 DK's who act as peripheral and connect to a nRF51 Dongle that acts as central. The peripherals use application code ... (more)

Hello all,

I try to send a command to read device ID (0x9F) of a micron memory device (N25Q064A) using SPI protocol. I have the following hardware configuration :

NRF_SPI_CLK --> N25_CLOCK
NRF_SPI_MOSI --> N25_DQ0
N52_SPI_MISO <----------- N25_DQ1
N52_SPI_SS <----------- N25_SS

N25 is set in ... (more)