My sensor is off-standard,so I have to use gpio to read and write my sensor.
Gpio IIC will take about 0.5ms to get data.
My app need send data every 7.5ms,it seems that...
Hi,
My android Proximity application fails on service discovery only for the very first time it connects with the devices(nrf51822 evaluation kit with sdk 5.2.0). Actually...
Has anyone converted the app note AN34 DTM Python script to C# or C/C++ ?
The Python DTM script is works OK with the setup specified in the app note AN34 figure 2, which...
Hi,
I have a serious problem, when I use uart of NRF51822 QFAAC0 to receive data from another MCU, I found that it will lost one bit at same position everytime. my SDK is...
Hello
I wrote a tutorial on using the nrF52 Development Kit with Keil MDK.
www.keil.com/appnotes/docs/apnt_308.asp
This document features essential debugging capabilities of the nrF52 series.
ETM Instruction…
1.Profile
During connection procedure of BLE, there are three packages: SCAN_REQ, SCAN_RSP 和 CONNECT_REQ。
SCAN_REQ: Scan request, issued by MASTER DEVICE, send to SLAVE DEVICE,sent by the Link Layer…
1.Profile
MTU: ATT Maximum Transmission Unit (MTU) is the maximum length of an ATT packet. The ATT MTU is defined by the L2CAP and can be
anywhere between 23 and infinity. The implementation of the…
Before we begin
Scope
Topics that will be covered include:
Before we begin
Necessary equipment and software
Necessary prior knowledge
Some basic theory
The Generic Attribute Profile (GATT)
Services…
Setting up the Timeslot API
When you want to use the radio while still maintaining a BLE connection or have a task that you need to do uninterrupted by radio activity, you can set up a timeslot. The timeslot…
Radio Notification
In this tutorial we will set up a beacon example and modify it to use radio notification. Then we will use radio notification to light a LED when the radio is transmitting.
While this…
Board Support Package
In this tutorial we will use the Board Support Package to control hardware peripherals on the nRF51 or nRF52 DK.
Required tools
Keil 5.20
nRF SDK 11nRFgo Studio 1.21.…
nRF51 Low power modes and power profiles documentation
The low power modes for the nRF51 series are System On and System Off. You can read about them in the nRF51 Series Reference Manual v3.0 sections…
###Note: This tutorial is for the legacy DFU module included in SDK version 11 and earlier. To get started with the new DFU included in SDK 12 and above, please see the SDK documentation in the Infocenter…