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...
Hi.
I am using S130 softdevice version.
Basically, I am using NUS Service and make a my own NUS central service as NUS_C.
It is correctly work at normal state.
When...
Hi All,
Please Reviwe for a attached circuit file(Chip ANT of nRF51822.pdf).
I also attach a datasheet of chip antenna applied for that circuit(SDBTPTR3015 Data Sheet...
Hi,
I'm developing with 52840 DK, trying to add peer manager to another project I've modified from ble_app_uart (basically I've added saadc, SPI, USB and I2C module based...
Hello
I was setting up the nordic thing 91 (1.4.0, 2020.23) using this video https://www.youtube.com/watch?v=xQ7hDzRULJQ&ab_channel=NordicSemiconductor .
Things were...
I'm starting to design a custom board around the NRF52820 using a 3.7v battery and there is no reference circuity for VDDH using Battery/Ext. regulator. Any tips on what I...
Hi,
We are in the process of evaluating coded phy transceiver for our next product. The product is a IoT node which will send sensor data to centralized gateway and will...
I am using nrf_drv_twi_rx to initiate an I2C read transfer but the interrupt isn't fired for the RX transfer when the ulTaskNotifyTake is used, but seems to work without ulTaskNotifyTake...
Hello, I am making a system with 20 peripherals to a central base on nRF52840. I followed the firmware."ble_app_uart__saadc_timer_driven__scan_mode" from NORDIC playground...
Hello, i I am designing a prototype, the goal is to be able to control a small engine. This engine will be activated when a message is received in MQTT. I currently succeeded...
Hello, I developed for my customer, a ZigBee coordinator in last 2019, using nRF5 SDK for Thread and Zigbee v3.2.0. I have now two questions: - is ZigBee 3.0 supported by...
I'm currently working on the nrf52832_qfax_dcdc pcb after adding a few components. I need to route to pins p0.22, p0.23 SWDIO and SWDCLK but am unable to route away from the...
Hello,
I noticed that publishing mqttsn messages with a payload larger than ~255 bytes caused an error in the mqttsn library. I think the problem comes from this definition...
I am developing an app for the 51822 with 16KB RAM, which is supposed to integrate the buttonless DFU.
I have attached the whole hex of the merged application+softdevice...
Hi Nordic Tech Support,
Our company is evaluating nRF5340 for future project. I have brought one nRF5340 DK, and I am following the online guide to build and program the...
Setup:
periheral: RF52840, S140 softdevice (SDK 15.3)
central: for test/development: laptop with Linux and BLE adapter build in, and/or Raspberry Pi, using Python testing...
I'm using the nRF5340 (currently nRF5340DK with custom hardware following shortly) and NCS 1.6.0. I'm working on a project that needs at least two UARTs and one SPI master...
