16,752 questions

HI,

I am reading LIS2DH accelerometer sensor data to nRF51822 MCU and displaying on hyper terminal. The LIS2DH sensor gives output in the form of digital through SPI or I2c. I am configuring through SPI. The problem is whenever accelerometer ... (more)

Hi all Nordic Developer,

Currently I am working on nrf51-dk(as a BLE central) and I wish to connect one of its pin to a power supply(as a input). If the power breakdown, it should send out a warning ... (more)

Hi

Today I have recieved the new nRF52 Development kit PCA10040. I have downloaded the latest version of SDK nRF5_SDK_12.0.0_12f24da working with ANT_s212_nrf52_2.0.0.

I was able to successfully compile the Blinky example, but when I flash ... (more)

Hi,

referring to the SoftDevice Specification, S132 Softdevice vx.0, paragraph 15.2 (Attribute table size) I wonder how one does work out the size of the attribute table.

The reference given at the bottom of the paragraph refers to ... (more)

Hi,

we are now in the second round of prototyping - we'd like to move away from the chip-antenna based design to a PCB antenna. We have come up with two different ideas (see images enclosed).

Would anyone at Nordic ... (more)

Github said it works in sdk8.1, But I place it under *nRF51_SDK_10.0.0_dc26b5e\examples* It works well in the demo board. Question,Can it be used in sdk10? What I want to do this in sdk10 because I ... (more)

Hi,

Context

The chip will be a slave of a powerful CPU which is responsible for many coordinating tasks. The chip will connect the CPU via UART. I am interested in BLE.

It is important to minimise the interrupt rate ... (more)

I have difficulties understanding the COMP APIs, this function below starts after initializing the COMP the peripheral.

nrf_drv_comp_start(NRF_DRV_COMP_EVT_EN_CROSS_MASK,NRF_DRV_COMP_SHORT_STOP_AFTER_CROSS_EVT);

It expects a secoend argument which set the the shortcut register.

It is no where mentioned in the documentation that ... (more)

We love the radio range of the Nordic bluetooth chips. I am looking to see if anyone is developing a long-range bluetooth pendant or wearable? if so, I interested in perhaps adding it to the safety solution we offer. Happy ... (more)

Here My device (chip nrf51822_xxAA) exist softdevice 8.0.3 and BLE uart application work fine which flash by the ST-link in Keil MDK(5.20). Now I try to add bootloader to my device from the example project of ... (more)

The nrf905 has a CD (carrier detect) pin that is pulled high if the nrf905 detects another device communicating on the same channel. This can be used on the MCU for collision avoidance. But what happens if you use the ... (more)

Hi,

Is there an example available for Nrf51822 BLE HID (nrf5 SDK v11) with Feature and Output reports? I've added an output HID report to HID mouse example from SDK and Windows recognize it. But when I try to ... (more)

I can't build ble_app_proximity_pca10040 example due to uv5 core size limit. One user suggested that I port the old device_manager to SDK 12 proximity example to reduce core size.

I replaced peer_manager.h with device_manager.h and corresponding function ... (more)

Are there plans to create a nRF5x micro that has finer control over the RF power output? I'm currently using an nRF52, and the 4dBm steps are pushing the limits of our intended application. Ideally, I would love to ... (more)

Hi All,

we currently move our custom design to CE testing and already did some successful EMC pretesting. However, our testing house asked us to prepare a firmware for fixed frequency testing with different packet types (DH1,DH3,DH5).

Looking ... (more)

Hi

I am trying to put nrf52 device to system off mode, and wake up by button press.

If I do not enable the softdevice everything works fine, and button press wakes up the device. But if I enable the ... (more)

i am confused how to build a nrf52832 demo that use mbed os and other mbed things. and i tried link text download the demo from github, but do not know how to put in it in a keil project ... (more)

Hi All,

I have enabled the UART service in my beacon application.I Configured write access and write permission to characteristic UUID. I got connected to the device and after disconnecting the beacon is not coming back to advertising mode ... (more)

I am using app_timer to measure the time taken to execute a function. I am using ble_app_template code. As mentioned in the documentation, app_timer needs to initialize the LFCLK. It doesn't need to initialize a LFCLK if softdevice is ... (more)

Hi!

I am new to the embedded world and am trying to interface a NRF52 DK with a MPU 6050 accelerator/gyroscope. Right now, I have been able to interface the MPU 6050 with an arduino. Now, I want to ... (more)

I want to combine two applications, both of them having two services. One application resides at 0x16000 and other one resides at 0x249f0. I am using softdevice 7.3 and sdk 6. What I wanted to do is that, when ... (more)

I'm having no success getting the FDS (Flash storage) to work on my nRF52 PCA10040 board with SD130 2.0.0 and SDK11. I am using the Nordic example on Github here: https://github.com/hubuhubu/nRF52-fds...

My system ... (more)

Hi,

I'm using a PCA10040 board with the UART example provided with the v12 SDK, and the data seems to get corrupted somewhere along the way between my Ubuntu machine and the nrf52.

When I do:

 pr@pr:~/nRF5 ...