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The day after the Bluetooth SIG announced the 1.0 spec of the Bluetooth mesh we are happy to announce the nRF5 SDK for Mesh for our nRF51 and nRF52 Series SoCs. This first (v0.9.1) release is packed with new features and concepts for Bluetooth. What is Bluetooth mesh? The mesh capability is a significant update and enables a radical new approach to making Bluetooth applications. With this update to Bluetooth, there are significant changes and many new concepts to learn for developers and product ma...

We’ve all seen the hype on 2x Speed, 4x Range, and 8x Advertising data increase capabilities in Bluetooth 5.But what does this all mean?? How does it achieve all these improvements? Is it really possible to achieve all these simultaneously?? What about power consumption?In this blog post (first in a series of posts on Bluetooth 5), I go through each of the new Bluetooth 5 features. Other topics covered include: Overview of Bluetooth 5 and its major improvements How Bluetooth 5 achieves higher speed a...

MotivationVery often, while working with Bluetooth LE devices, we encountered a problem having to repeat a sequence of operations to test or demonstrate some functionality. Writing a mobile app every time to show couple of buttons that interact with a device was costly and boring. A more generic and easy to use solution was required.Automated testsOur first approach, the automated tests, allowed to prepare an XML script with sets of operations that were automatically performed producing a report as a resu...

DEVZONE FORUM

24.07.2017

nrf905 usage

hi all,i'm using nrf905 for wireless communication at range of about 30meter @433mhz.and have some question ,maybe your guys can help me.thank you. 1. q1:upclk pin,donot use this pin,how to do?float it? 2. q2:caps.can i use 0805 caps? 3. q3:the on board antenna is 35x20 at 433mhz(datasheet),can i change to 20x35,maybe distance reduced.thanks again....

Hi , I have 2 nrf51822 borads. One is with nRF5_SDK_12.3.0_d7731ad\examples\ble_central\ble_app_hrs_c and the other is with nRF5_SDK_12.3.0_d7731ad\examples\ble_peripheral\ble_app_hrs. And both chip are with s130_nrf51_2.0.1_softdevice.But the test result from central demo is always "disconnected" as following:APP:INFO:Heart rate collector example.APP:INFO:Starting scan.APP:INFO:UUID match send connect_request.APP:INFO:Connected.BLE_DB_DISC:INFO:Starting discovery of service with UUID 0x180d for...

I spoke with someone at Nordic who seemed to imply that utilizing the radio does not necessarily tie up the Cortex processor on nRF5X devices. Is this true? It seemed to me that the Nordic libraries (incl SoftDevice) ran on the Cortex.I see from the radio block diagram in the nRF52 spec that the radio does have its own packetizing and DMA logic. Where can I go to find a more rigorous explanation of what proprietary/BLE radio procedures use the Cortex and which (if any) can be performed concurrently with a...