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:
environment:
target board: DK52 board and run LWM2M example of IOT-SDK v0.9
router: ubuntu 16.04 on VM and runs bsserver and LWM2M server on ubuntu 16.04 ...
when i am load the the program to my nrf52832 with ble lbs example it show an error : Flash Download failed - "Cortex-M4" . my softdevice is s132 v3.0.0 .... please help me...
Hello everyone,
I have tested my prototype on nRF52840 but the board is pretty big and I want to do a product pilot with a custom hardware of mine. Now I know that the...
Yan,
To test my UART program, I'll need a phone which will receive my GATT MTU, such that I can test it.
Do you have such Demo app, preferably for a Windows phone, or...
Is there any simple way of reading analog values from pin. Setting up SAADC is giving too much of errors like command line action failed or any variable is undeclared whose...
Hi,
I'm interfacing a nrf51822 and a H8/3294. My question is how much can I drain a the txd pin of the H8/3294. That means my question isn't really about nrf51822.
In documentation...
hi,
I have several questions regarding the demo.
I tried to load the provided nrf52840_xxaa.hex to PCA100056 with s140 5 alfa, however, no images is transferred ...
Hello,
I tried to use ADC on pin 31 (A7) in my project* and i have something strange. It looks like if my pin is pulled down inside the nRF52. Does someone have any clue...
Hey guys,
I am currently using the proprietary protocol on the micro_esb.c library with the nRF51822. So far everything has been working great, but I am certain my transmission...
Hello,
I'm trying the bootlader of SDK13.1, with SD S132_nrf52_4.0.2
I manage to send a ZIP file to the bootloader, but the application doesn't launch. I've tested with...
Hi,
I measured the current consumption of nRF52DK with the original code of "nRF5_SDK_13.0.0_04a0bfd\examples\ble_peripheral\ble_app_beacon ",
based on the current measurement...
Hi everyone,
I was wondering if anyone benchmarked the time for reading a word from flash on the nRF52840. I was able to find the write/erase time on the specs document...
Hi,
We use the nrf app (Android smartphone) to establish BLE communication with trackers designed with nrf51822.
When trying to connect, sometimes it works, sometimes...
Hello， for the past I've been trying to migrate unsuccessfully my code from nrf51 to nrf52840 S140. Now that I'm unsuccessful, I'm trying to eliminate the possibility of a...
