Hello,
I established a connection between my central and peripheral module. Now i want to write characteristic value on peripheral. I tried with sd_ble_gattc_write function...
I am using the NRF24l01 for my products and looking to buy in bulk(100-1000). Now I know where to buy the just the IC but antenna design is a hard point to break right now...
Hi, my friend,
I've been with nrf905. I use a 16-bit CRC check.
But I encountered problems in use:
1.Nrf905 16-bit CRC check format is CRC-16(IBM):X16+X15+X2+1 or other...
I have two custom PCBs, each of which has a microcontroller and an nrf24L01+. Everything related to the transceiver in the designs are complete duplicates (with the exception...
Hello,
I've built a small BLE-device based on the nrf8001.
With my Iphone I can discover this device and I am able to connect to it and listen to notifications of the...
Our pcb is used for gps location data. We have a nrf24L01 nordic chip as the micro process or between the gps module and wireless module (2G). Our engineer needs to capture...
Hey folks,
I'm trying to modify the SPI Master loop back example into a 4 line SPI Master_Slave program. Whenever I change the Tx_Buffer_lenght from 10 to lsome other numbers...
Also please let us know if there are any antenna design specifications.
If we use other antenna for NFC is your certification valid or we need to re-certify our product...
Hi,
I've been experiencing some very slow erase times in the erasing / programming stage. Consistently around 10s. I am using SEGGER Embedded Studio, J-Link V7.22, and...
Hi all
According to the PS of the nRF52832, the INFO.VARIANT field in the FICR is ASCII encoded (e.g. 0x41414530 -> AAE0).
Are only capital letters ('A' - 'Z') and numbers...
Hi everyone,
My task is make Uart peripheal advertisments on coded phy, for that i CONFIG_BT_EXT_ADV=1 on autoconfig.h, and I add the function bt_ready of the project peripheral_hr_coded...
Hi
I want to design a GATT service as a connectable peripheral device. My board is NRF5340-DK.
The software which I am using is NCS(based on Zephyr).Which sample code...
I integrate dfu into light_switch example. Current consumption before flash bootloader is 200uA, but when i flash bootloader it increase 1.2mA. How do i disable bootloader...
I got some Holyiot "YJ-17017-USB" dongles, which use the nRF52832. From my Windows dev environment, I want to load firmware on them (SoftDevice, etc.), but I'm not sure how...
I have an NRF52 DK, and an IM21 door sensor that advertises events. I am trying to pick up these events with the nRF52DK in the most robust way possible. I have used the scanning...
Hello Experts,
When I use a X-Ray machine to check appearance of NRF52840 . But I found out that there were some abnormal phenomen as same as a photo below:
Any body...
I'm developing a beacon-like product using an nrf52840 with S140 on CR2032 battery. In PS under sleep current draw, it list 0.97uA for system ON, RAM retention OFF. I'm trying...
Hi, I have developed a BLE/ZigBee application starting from nRF5 SDK for Thread and Zigbee v3.2.0. Now I need to add a "timer" for measurement timing most precise as possible...
Hello all. Is there a possibility to implement a "software watchdog" on the nRF51822 SoC. I would like to react with this watchdog not on external events (e.g. hardware-actions...
Program received signal SIGTRAP, Trace/breakpoint trap. HardFault_Handler () at ../../../../HAL/NRF52/HAL.cpp:122 122 __debugbreak(); (gdb) bt #0 HardFault_Handler () at ...
Hi,
I've added usb function to nRF52840 project accroding to usb sample projects.
The function was all right but the device manager showed the the 52840 as "USB serial...
Using windows 10 OS, and SES v5.40.
I am using nRF52833 device in my project along with nRF5_SDK_for_Thread_and Zigbee_v4.1.0_32ce5f8 SDK.
The timer is called for every...
