22,333 questions

Hi,

We're working on making some more tutorials, we have some thoughts on what we want to do, but we would really like your input. After all it's you, the user, who will benefit from this material.

What ... (more)

Gentlemen,

I apologize if this is not the correct place to post this question.

I have a potential project to start a BLE project but their requirement would be start a new design with the CC2541.

However, I would like ... (more)

On SDK 12.0.0, SDK 12.1.0 and SDK 12.2.0 only

Please Do not judge the quality of SDK based on number of entries here. This thread should be considered as part of Nordic effort to ... (more)

When initializing the S110 softdevice, I can choose between the different clock sources as defined by the nrf_clock_lfclksrc_t enum:

/**@brief Possible lfclk oscillator sources. */
enum NRF_CLOCK_LFCLKSRCS
{
  NRF_CLOCK_LFCLKSRC_SYNTH_250_PPM,                       /**< LFCLK Synthesized from HFCLK.                    */
  NRF_CLOCK_LFCLKSRC_XTAL_500_PPM,                        /**< LFCLK crystal oscillator 500 PPM accuracy.       */
  NRF_CLOCK_LFCLKSRC_XTAL_250_PPM,                        /**< LFCLK ...

On SDK 11.0.0 only (NOT the alpha release)

• Do not judge the quality of SDK based on number of entries here. This thread should be considered part of Nordic effort to main the quality of the release.

GENERAL ... (more)

For my current project, I need to compile the »over the air bootloader« with gcc (because our buildserver runs on linux, developers using Mac … no Windows and no Keil so far).

But unfortunaly, the bootloader example from the sdk (5 ... (more)

Hi, I need to send(using BLE) large amount of data's, which are collected by the accelerometer sensor for 1 hour. I have an external NOR flash where the accelerometer data's are stored and from there data's ... (more)

Hello,

I was puzzled by RM.

I notice POWER control register in peripheral(UART,SPI,TWI) module.

Please answer following questions about the relation between system power and the peripheral power register value.

1. Will UART be powered when system power ...

I am starting my development work with Nordic Semiconductor nRF51822 Device and already purchased the Development kit. What i wanted to ask is do i need to purchase KEIL MDK 500 License to write my code/application? Because the Low ... (more)

I want to play songs wirelessly on speaker ,suppose speaker is connected to one soc and and another soc is connected to storage which contains songs how do transfer that from storage to speaker and play wirelessly and please tell ... (more)

I've sifted through the examples given to me, and none of them seem to explain how to create your own service and add it to the stack. All of the services that are registered in the ble examples (nRF51 ... (more)

Hi everybody,

a while ago I used the approach proposed here https://devzone.nordicsemi.com/questi... to keep the date and time on a NRF51822 device while using Softdevice S110 and the Timeslot advertiser-scanner (https://github.com/NordicSemiconducto...).

In practice ... (more)

Hi, I just read IoT-MQTT example and have almost exactly the same problem but with the Publisher. I am running a PI with Raspberian 4.4.34-v7+. I have installed mosquitto on the PI and have radvd installed. I turned ... (more)

Dear Nordic Developer Zone,

I have a silly question. After searching in the Nordic and Bluetooth documentation, I didn't find what CCCD and SCCD mean. Theses metadata are parts of the characteristics.

Can you explain me what these acronyms ... (more)

After installing nRFgo Studio v1.17.1 on Windows 7 64 Bit (using the administrator account), I get an error message in the Log section just when I start the program:

"JLinkARM.dll is not correctly installed. Please run the ... (more)

Hello. I want to make flashing of devices for production faster. So I want to write application together with bootloader via J-Link simultaneously and not via OTA DFU. I'm using S110 v6 and dual bank BLE DFU from SDK ... (more)

Hello, I use nRF51822 for my project and I would like to purchase some BLE packet sniffer. Does anyone recommend any sniffer? My purpose for that is debugging and check transaction, so it will be good that it has a ... (more)

When I scan BLE device at nRF UARTv2.0 App in Android4.4, it is appar device name(Ex:Nordic_UART) and 6 byte device address(MAC address?). I want to include mac address in device name. How to get 6 ... (more)

I am wondering how you put the nrf51822 chip to sleep. I've determined that the way to do this with the soft device is sd_app_event_wait() in the while loop. What about non-softdevice?

I am wanting to have it sleep ... (more)

Hi,

I use a personnal GAP Address, but it must be the type used: -Public address. -Random Static address. -Private Resolvable address. -Private Non-Resolvable address.

and what is the difference?

Code :

st_Gap_Addr.addr_type = BLE_GAP_ADDR_TYPE_RANDOM_STATIC; st_Gap_Addr.addr [0] = g_stBL[0]; st_Gap_Addr ... (more)

Hi

I want to update the connection parameter and send this request from nrf51822 to a smartphone app. I see there is a function ble_conn_params_change_conn_params() for this. However, every time I call this function, nrf51822 disconnects the current connection and ... (more)

Because of the limitation in the GPIOTE hardware that only one channel can be connected per GPIO, care must be taken when changing a PWM duty cycle. If for instance the compare events that each trigger a GPIOTE toggle happen ... (more)