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...
The address miss event is not shown as a transition in Figure 22 of the NRF51 Reference Manual. What state does the NRF51 enter upon an address miss and how long after the...
To use BEL application, the soft device must be downloaded before programming.
i can find a table shows that which soft device version is suitable for chip version.
how...
Our application is developing RC units for small (indoor) model airplanes - we want to be able to have multiple planes flying at once without "stepping" on each other.
...
I'm developing a NUS-based peripheral and adding a timeout to force a disconnect after a period of inactivity (i.e. no incoming NUS data). However my peripheral also provides...
Hi all,
I'm trying to use Ant+ HRM RX demo profile from nRF51_SDK_10 ( nRF51422 ) between my board PCA10028 and a Garmin rate sensor but I get some trouble.
Let me explain...
In the example iOS app and the DFU service in the firmware there is a DFU revision characteristic UUID 0x1534. The Nordic SDK documentation don't mention this characteristic...
HI，I'm having trouble in flash operation.I I did an experiment of flash operation.I call pstorage_store( ) or pstorage_load( ) very second after nrf51822 connected with app...
I would like to know how long TXIDLE state takes, between sending two data packets, for NRF51822? I want to minimize the time between sending two data packets, to maximize...
Hi,
Everyone,
I am trying to understand BLE app code and using debugger to find the values of the data sent over BLE during advertising mode.
But during debugging I...
Hello,
I am designing a custom protocol using the radio as a peripheral. The protocol has the chance for two nodes to transmit at the same time on the same channel. My...
Dear Sirs,
We compile the bootloader in dfu folder, sdk 10.0.0, with IAR, and download on 51822 QFAA chip. When trying the DFU function with MCP tool with version 3.10.0...
Hi, I have peripheral device using the nRF8001. I'm using the Android BLE SDK on the MCU to talk to it. I am having a problem where I am using lib_aci_set_local_data() SDK...
Hello,
I would like to implement the sniffer on PCA10036 (I have two, they are no more useful with the latest SDK). I programmed the hex file from this post:
link text...
Hi,
Can i use internal 16Mhz clock of nrf51822, to run peripheral uart example? I don't want to use any external clocks?
If yes what are the changes i need to make in...
