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...
Hi,
I just started to interface the lcd display with nrf51822 evaluation board. The display i'm using is, spi compatible, 18" tft (160x130) from tiny lcd. I took spi master...
Hi,
We are using the nRF905 device in an application where it needs to switch between auto-retransmitting and sending single packets, due to it communicating with several...
Hi,
I need to have long attributes. So I need 'Read Blob' operation for read and Queued writes ('Prepare Write' and 'Execute Write'). Does Soft Device for nrf51822 support...
Hello everyone , can i use UART which is not a services or characteristic in bluetooth low energy . It will result in some question or bad effection?
By the way . why I cannot...
Dear all:
recently, I follow heart rate profile to write custom BLE profile,but I also went to a number of issues. how to wake up the device when entered power system off...
Hello,
This is the first time i use NRF8001 chip, i was reading the ic manual nrf8001_PS_v1.1.pdf (see attached file).
It was written that in case i used DC/DC converter...
Hello,
I checked Nordic website for layout of NRF8001 but i didn't find.
Please if some one can share a qualified RF-layout.
Help is appreciated.
Regards,
Hisham
from training document from Nordic company(see the attachments),it mentioned that we can add scan response .but i can not find any information in BLE_HRS demo.could you tell...
Hello,
I made a PWM with the TIMER2 of my nRF51822 (with the SoftDevice) and was working fine, till I read that I should not use the "NRF_PPI" functions and use the "sd_ppi_XXX...
I've got an nRF51822 development kit that I'm trying to get started on. I've gone to Kiel and downloaded uVision 4 (mdk472_a). I install it with all default settings and it...
Hi,
I add UART support using IRQ on the "ant_hrm_tx" example code.
and I'm sending packet of 4 bytes that contains: Delimiter,HeartRate,Battery,Delimiter
the frame...
Hi, I am trying to test my UART using some simple loopback test, and I have noticed that the service discovery command of BLE will occupy the CPU a quite long time. I am just...
I was unaware that the 'manufacturer data' in the advertising packets is limited to less than a full payload. However, whenever I set it to >6 the program "crashes".
...
When I use keil to download the software to the chip, there are two questions:
like attached.
2.NRFGO CAN'T SEE J-LINK LITE CORTEXM BOARD
Is there any way to solve...
We have recently moved to a new PCB which puts the nRF8001 on the layout instead of plugging into a nRF2741 development module. The nRF8001 connects to a TI Cortex-M4 Tiva...
