23,073 questions

Is it possible with Nordic NRF51422 to perform accurate proximity ranging to make sure that a circle of 2 to 3m but not more is identified in a reliable way? What is the accuracy for RSSI measurement or for proximity ... (more)

Hi all,

I am a new user to the BLE technology and to the Nordic's development tools/chips. I use the nRF51822 development kit and the nRFgo Starter kit to develop a BLE application and the PCA10000 USB dongle ... (more)

Hi, I'm using PCA10001 connect to a sensor chip.I would like to set the register values for sensor chip as SPI master role and I need to switch to slave role to read the sensor data from sensor ... (more)

Hi, For providing OTA function , I add dfu service into my own application APP1. and create another application App2 to copy the new firmware(named APP3) and cover the flash area, where APP1 is burned. the new firmware is received ... (more)

Hi Guys,

i'm a newbie, trying to get the heart rate demo project working.

I've connected the nRF8001 to my own hardware, using a PIC processor.

i'm able to connect to the master emulator, and enable services ... (more)

Hi guys, Is there any way that I can re program the MAC ID of the nRF51822 devices through the SWD interface? I was able to do this using the UART interface with the BL600 (Laird) module which is based ... (more)

My application would like to receieve notifications at several different times before a radio notification event. Specifically the application needs to receive notification 250mS before and the flash manager requires notification 50mS before.

Does ble_radio_notification_init support multiple event handlers and ... (more)

Hi all,

When I receive data from the phone app, I do it via this service handler (and it works):

err_code = ble_services_init(&my_device_service, ble_receive_handler);
APP_ERROR_CHECK(err_code);

Now I would like to set something up to send data up to the ... (more)

Hi, I'm trying to add more user services to LBS demo. I generated 128b UUIDs for my services. Then I should add them to list returned by scan response in function advertising_init() - there are 2 structs: ble_advdata_t advdata, scanrsp ... (more)

For some sort of geofencing application, we want to include the BLE module nRF51822 into a Base Station (BS), and a small mobile device (MS). The MS should detect the presence of a signal from the BS. If it is ... (more)

Hi,

i am using the adc module to read 3 channels in an app_timer handler. I configure the adc each time i get into the handler to read the desired input and read it twice (first a dummy read out ... (more)

I am trying to manage the bonds as follows. I've defined the max bonded masters as 4 on my slave. When this list gets full, I delete a random bonded master on the slave (not the last one in ... (more)

Hello,

i have two operation modes: 1. One or more devices are bonded and advertising mode with whitelist (BLE_GAP_ADV_FP_FILTER_CONNREQ) 2. A new proximity central device should be added to the whitelist. When an unknown proximity is close to the proximity ... (more)

Hi,

On a nRF51822 (QFAAG0) with S120 softdevice (using the recent PCA 10001 v2.2.0 board), i'm trying to perform these operations successively: - a simple RSSI scan - stop scanning - start advertising

Refering to this topic : Can nRF51822 support ... (more)

Hi, I created firmware to nRF51822 Development Kit but I have a problem with connection. PCA10004 board is programmed to advertising packets whole the time and measure battery voltage level every hour (APP_TIMER_PRESCALER 8, BATTERY_LEVEL_MEAS_INTERVAL APP_TIMER_TICKS(3600000, APP_TIMER_PRESCALER)) but from ... (more)

I am developing packet exchange process for betwween nRF51822 BLE to My MCU. I modify to use nordic demo project. It is place C:\Keil\ARM\Device\Nordic\nrf51822\Board\pca10001\s110\experimental\ble_app_uart Now, I can transmit 26 packet ... (more)

Hi,

There were similar questions already anwsered but none of them work for me. So the situation is as follows. When i program the chip though SWD interface the chip probably enters debug mode and the power consumption is around ... (more)

I try to use 51822 to run ANCS sample(ble_app_ancs). It work well and I can get notification source and notification attributes. But I don't see any source code for get App attributes. Is it right? This sample don ... (more)

to control IOS by HID, for example, the volume up and down is 0xE9 and 0xEA in consumer page(0x0C). what's the brightness down and up?

I have test Display Brightness( 0x46) in the alphanumeric display page(0x14), there ... (more)

I want to use a UICR for device serial number. Correct me if I am wrong but it is my understanding that a UICR cannot be changed programmatically like onboard flash can. So right now I can use the free ... (more)

In the example of hid_mouse, ble device will bond master when disconnect event happen.

I try to add this two codes to Implement my idea.

            err_code = ble_bondmngr_bonded_masters_store();
            APP_ERROR_CHECK(err_code);

But when I did this error appears

error:-559038737 ...line:783 ... (more)

I'm using the UART to talk to a GSM modem. It has hardware flow control and supports a baud rate of 115200. I'm using app_uart_fifo.c, not app_uart.c. I'm using the SoftDevice and have it enabled ... (more)

I'm developing a next generation device using nrf51822. To replicate existing behavior I'm trying to sniff the previous generation product behavior using the ble sniffer on pca 10000. The previous generation uses TI cc2540 which advertises across multiple ... (more)

Hi,

I need something that can be the Master and talk to the Evaluation Kit Board to try to send a large amount of data. Do the Master Control Panel, or the mobile app nRF Master Control, support that? In ... (more)

Hi,

I need to delete all centrals using ble_bondmngr_bonded_centrals_delete ble_bondmngr.c function. It is working but it is not cleaning the whitelist.

So, when I do:

 err_code = ble_bondmngr_whitelist_get(&whitelist);
 APP_ERROR_CHECK(err_code);

if ((whitelist.addr_count != 0) || (whitelist.irk_count != 0)) {..}

The whitelist ... (more)

SDK version: 5.1.0 S110 version: 6.0.0 chip: nRF51822

I am experimenting a generic Data transfer hid device, the report map is as follows:

 0x05, 0x0C, // Usage Page (Consumer devices),
 0x09, 0x00, // Usage (unassigned),
 0xa1, 0x02, // Collection ...