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,
Setting the scene:
I have several sensors that are decoded via an external device that outputs UART serial data (115200 baud rate).
The data looks like this: Received...
I am building an non-secure app and have a few questions.
1. Looking at the DTS file for pca10090 the partition table has both non-secure and secure slots for mcuboot. Totalling...
I have recently upgraded FTD code which was based on nrf sdk for thread and zigbee v2.0.0 to nrf sdk for thread and zigbee v4.0.0
On compiling the FTD I am having the following...
Hello,
When CONFIG_PROVISION_CERTIFICATES is y and certificates are defined in certificates.h the program fails in provision_certificates() function, the modem_key_mgmt_delete...
Hi,
I am working on Bluetooth peripheral and pin_interrupt_change program in nrf51422 on sdk 12.3 .
so I added pin_interrupt_change program in the ble_app_uart program...
I'm attempting to synchronize/correlate measurements made by two separate nRF9160 devices and was hoping to use a timestamp to do so. Essentially I would like to measure the...
I am using GPIO interrupt event.
And I added the following code because I wanted to observe PA / LNA.
Adding this code stopped the GPIO interrupts. Can the two coexist...
Hi,
For nRF82540 dev board, the secure bootloader code has embedded many NRF_LOG_DEBUG(...). But they are not displayed or output to virtual COM port. Is there anyway to...
Hi all,
I'm looking to develop a proprietary start network that may support around 30 devices, with very low bandwidth (pretty much just a keep alive and a sensor state...
I just came upon a blog post from ARM about the use of the Cortex-M4's FPU:
https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/10-useful...
Hi, I am looking for sample code that can reconnect to bonded devices and share the encryption keys with DFU-OTA.
I have worked using DFU-OTA (JUST_WORKS option); I question...
hi all,
i can't update new nrf cloud certificate
"There was an error generating the certificate: No Nordic product with device id nrf-xxxx...(imei)and ownershipCode...
Hi.
I have a Thingy91 that I will use as a remote wake up for another system. I am trying to estimate how long the system will be able to run on a single charge with the...
