I am working on the proj that needed 2 MCU and nrf51822 work as slave.
I would like to know any ref on how to firmware upgrade on board without external tool?
We're looking for a Nordic nRF51822 based low profile/small USB dongle that we can use for our iBeacon software.
It would need to come complete with casing and the ability...
Hi all,
i want to establish connection between two threads in cmsis-rtos, can i use
1) semaphore to do this?
2)message queue should be used or any other ipcs can be...
Hi,
I have two CPU in our product. (STM32F2 and Nordic nrf51422).
I use serialization function to link those two CPU(refer to ble_s110_serialization sample)
But I find...
Hi,
My behavior is as follows
Turn on my device(use 51422) and advertising(2 Service and 3 Characteristic)
Turn on my cell phone(Samsung Note3),scan my device...
Hello:
I used analog IIC write MPU6050. Again after power download programs, mpu6050 can run up there ACK response. But the debug will not run. Simulation IIC because no...
Hello!
How can I communicate with my nRF24L01+ and nRF51822 at the same time. I can set up same channel, CRC-mode and I don't use ESB. But what about address? How do I set...
Hi,
I'm originally iOS app developer.
I have been developing with custom PCB that based on nRF51 chip. (not nordic development kit)
My PCB has a gyro sensor and some...
Hi,
Whenever i m trying to upgrade my application using iphone with binary file then i get "unsupported DFU" error. what is meaning of this error and how can i resolve...
Hi please help,
We are facing a problem of Gazell failure (not getting interrupt on gazell ISR) when i perform external Flash write using SPI.
If i disable gazell and...
hello there i downloaded nrf5 iot sdk. i have nrf51 and nrf52 kit.now it has many example codes like tcp,udp. can anyone tell me how to test it with my kits??
Hi everybody
Can nrf51822 advertise with a Balun whose SE pin is disconnected? (not connected to antenna, just left disconnected)
Just like the reference circuitry above...
Hello,
I can see, that sd_ble_gatts_hvx() returns 13313, if the notification is not enabled for that characteristic from the connected central. --> S120 Softdevice runs...
Hi
I got my new NRF51 DK. I was able to test it with blinky using mbed. I had to add the add the device nRF51-DK. then compile it and drag the .hex file into the mbed drive...
When I first got the nRF51-DK board... I was able to see this board on nRFgo. I then added the s130 hex file to it.. Since then when I connect this board, it does not show...
Hi,
Everyone,
I am trying to achieve minimum current level, I can possibly achieve, with continuous BLE transmission
so, I tried running BLE_POWER_PROFILING_APP given...
Hello to everybody.
I've buy a nrf51822 module with a motherboard.
i struggling to programming an uart over bluetooth example but i think something missing.
With nrfgo...
We configured nrf24LE1 as PRX and nrf52 as PTX and the packet sent out every seconds.
The nrf24LE1 will only received the packets every twice packet sent out and both packet...
I tried to use difference Data Rate for testing the transmit distance. Don't know why using the 250k bit is worse than using the 2M bit & 1M bit. The distance will decrease...
I am debugging a small program for the nRF52, which uses the App Timer and communicates over UART. I am trying to keep up with bug fixes, and so I'm using SDK 11.0.
The...
We have an application that requires a fairly quick disconnect (under 250msec) when the RSSI exceeds a threshold, for example -80db. Unfortunately, around 1 out of every 4...
