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...
Hello, I was wondering what the proper process is to set the measured RSSI values at 1 meter is. RSSI at 1 meter is a part of the iBeacon standard, and is also useful for...
I am PHD student in china and doing research about gait retraining. I am designing wearable sensor that monitoring gait and giving vibration feedback to retrain the gait and...
I've implemented my DFU app on Android(4.3). During the test, I found a strange problem, that the performance of writing image data into swap area is very very slow. My Softdevice...
Hi
I thought: let us quickly migrate to the latest SDK.
But that seems to be harder than anticipated.
I run into a number issues when compiling with the new code:
...
Dear Nordic developers,
I'm trying radio reciever example. I want to stay 7 ms in listening mode, if there is no event turn off the radio. For that I'm using timer interrupt...
When connect to iphone4s, whitelist.irk will be generate,and whitelist.irk_count will be add 1
After that connect to Nexus 7 II bouth irk and addr will be generate,and...
Hello all,
I've had problems for several weeks with RF24 Library (enhanced fork). I use different Arduino and NRF24l01+. I know very well different documentation, and I...
use s130-0.5.0
A1 connect B1 with BLE_GAP_ADV_TYPE_ADV_DIRECT_IND, after this, A1 is slave, B1 is master,A1 can't send any type advertisement
use s130-1.0.0
A1...
Good afternoon,
I have developed a custom board based on nRF51822 device and SD-110-v8. For debugging I have been usign the Ulink2 tool with Keil. Now, I want to implement...
This is not working for me. My goal is to use printf() in my code. I follow the steps outlined in this link
..including calling initialise_monitor_handles(); before calling...
I was able to measure current with the test probes I have. However, I really liked the idea of test probes that were like the ones in the drawing below. I have not seen test...
I am using the PWM library in this repository for a nRF51822. I write the following code to generate a ~ 30% dutycycle 500 kHz PWM output:
#define V_CLK 5
static void...
Hello,
I am using Timer_2 with two CC registers configured, 2 PPI channels (one for each CC register in the timer), and one GPTIO_TE to make a PWM to control dimming on...
hi,
my nrf51822dk was downloaded s110 hrs demo,and it was advertising,i used a ble sniffer dongle to get the advertising data.the AdvData is "0B 09 4E 6F 72 64 69 63 5F 48...
