How do I receive multiple signals simultaneously at a single receiver (433MHz) with multiple transmitters ?
I am working on a polling system. This one is similar to the audience...
Hello,
I established a connection between my central and peripheral module. Now i want to write characteristic value on peripheral. I tried with sd_ble_gattc_write function...
I am using the NRF24l01 for my products and looking to buy in bulk(100-1000). Now I know where to buy the just the IC but antenna design is a hard point to break right now...
Hi, my friend,
I've been with nrf905. I use a 16-bit CRC check.
But I encountered problems in use:
1.Nrf905 16-bit CRC check format is CRC-16(IBM):X16+X15+X2+1 or other...
I have two custom PCBs, each of which has a microcontroller and an nrf24L01+. Everything related to the transceiver in the designs are complete duplicates (with the exception...
Hello,
I've built a small BLE-device based on the nrf8001.
With my Iphone I can discover this device and I am able to connect to it and listen to notifications of the...
Our pcb is used for gps location data. We have a nrf24L01 nordic chip as the micro process or between the gps module and wireless module (2G). Our engineer needs to capture...
I have a question about using the GPIOs,I found that I can set a ‘1’ at the same bit position of OUTSET register and OUTCLR register. But which one is effective ?
Hello guys,
Looking through the product specification for nRF8001 I am still not clear on whether a master device can be connected to the nRF8001 (in peripheral mode) and...
Hi,
When erasing one page flash for responding one GATT request, it always went into assert_nrf_callback and has to reset the app. So I have to disable SoftDevice before...
Hello,
I am going to start programming BLE application, and I would like to know which enviroment is best to program it. Are there too many differences between programming...
Hello
According to the documentation the optimal CPU frequency is 16 MHz, Please, could someone tell me if that is correct or not?
Thanks for your help
Hi,
I modified the ble_app_hrs sample application with one custom service which includes, some custom characteristics (128 bit uuid), Now the problem i am facing is, i am...
Hi,
How to implement the passkey authentication, we are using nF51822 evaluation board. Is it possible to display the passkey using master control panel? And, we also don...
Howdy,
In a similar vein to my recent question about production programming....and nothing to do with takign an nRF51822 out for a walk :)
We'll write a simple test...
Hi
Before, TX and RX functions run well at iOS6. After we updated to iOS7, RX still worked but TX couldn't send out data. Did you verify nRF UART app at iOS7?
I'm reseaching a tag in low energy-cost using the nRF24le1.Till now,I can receive the message from the tag successfully, but can't send the command to the tag to read or write...
hi,
Now,my pre-Develop product(BLE),that to measure the Tx transmit power not correct with my setting(default 0dbm).
so,i have program a project for to sure the reason(Hardware...
I need to connect an I2C/TWI device to the nRF51822. The I2C device is running at a fixed 3.3V (from a boost DC/DC), but the nRF51822 is powered directly from a CR2032 battery...
Hi,
Is there anyway to keep the RTC going while in reset, device sw has crasched or in powered off mode or would I need an external RTC for this?
Is there any possibility...
I have two NRF24L01+ devices. My aim is to have one as PTX and the other as PRX replying with ACK_PAYLOAD. It is working with ACK enabled (without payload). However when ACK_PAYLOAD...
