Search Result

639 results found on Nordicsemi

Article 109 | News 371 | Product 159 | All results

57773 results found on DevZone

DevZone - first 10 hits

confliction in NFC tap to pair Bluetooth and NFC writeable NDEF message

Hello, the NFC used in our product has two major application 1. read/update configuration data by using the external smart device through NFC TAG here I am setting up type 4 tag and exposing the configuration data from flash memory on the TAG for reading/updating. 2. using the NFC TAG to pair Bluetooth(TAP to pair) and interfere with the device for BOOTLOADER or re-configuring purpose through BLE. here I am using type 2 tag setup and I think the data needed to pair Bluetooth is to be exposed onto TAG. is it possible to expose both the type of data onto the tag at the same time so as to meet the application of the above cases? if not possible, please suggest an alternate method to achieve the same. On what basis does the choosing of TAG type depend (i.e TYPE 1,2,3 or 4)? is it possible to use the

forum

6/1/2020

nrf52810 decreasing current consumption

Hello, I am trying to decrease current consumption as much as possible. I am using ble_app_uart example, sdk 16.0.0, s112 v7.0.1, nrf52810. when I edit #define MAX_CONN_INTERVAL MSEC_TO_UNITS(75, UNIT_1_25_MS) /**< Maximum acceptable connection interval (75 ms), Connection interval uses 1.25 ms units. */ to #define MAX_CONN_INTERVAL MSEC_TO_UNITS(1000, UNIT_1_25_MS) /**< Maximum acceptable connection interval (75 ms), Connection interval uses 1.25 ms units. */ my curreny graph is as follows you can see there are 22-23 mA current pulses in every 1 sec(after I connected successfully). is there a way to decrease these pulses? and another question is, can you please recommend a safe way to uninit and reinit uart on the fly? I also want to close uart when I am not using it to decrease current. thanks!

forum

6/1/2020

read POFCON register value while debugging

Hello, How can I directly read out the POFCON register value on the Watch Window while debugging? Where is it actually located in the library(sdk 14.2) source code? I want to observe POFCON behavior at various stages while my application is running. Thanks,

forum

6/1/2020

BLE OOB Pairing over NFC - Automatic connection without re-bound attempt

My goal is to establish a BLE connection between the DK and the smartphone, using NFC for the OOB pairing . I am using the nRF52 DK and the nRF5 SDK , v.16.0.0. The intended behavior is the following. A user must scan the NFC tag, bond their smartphone with the DK and then (and only then, since this will be the only bonding method accepted), the DK can accept the connection. If a user was not previously bonded, after bonding the DK and smartphone should pair. If the user has already bonded, to initiate a connection we must scan the NFC tag again, which will trigger the BLE to start advertise and allow the smartphone to connect. I tried using the ble_app_hrs_nfc_pairing and the ble_nfc_pairing_reference to make a quick prototype, but I am experiencing two issues: 1. After a successful bond, the DK BLE disconnects from the smartphone and

forum

6/1/2020

nrf52832 memory error!

when I coding this, I can not package my OTA files it shows So where can I find the problem? PLEASE HELP ME

forum

6/1/2020

Device reset is happening again and again while calling the function

Hi, I am working on project which is based on nrf9160. I added the source files and user define header files . and also given the path of source file in CMake file. Build is successful. But when i put the break point in function (function defined in some other source file and i m calling function from some other file) ,it is not juming to the function. Before jumping to function device get reset. Please help me out 2. after reset of device and when debugging is stopped it is showing like this -

forum

6/1/2020

Ble not advertising after adding twis i2c slave configuration.

Hello everyone, I am working with nrf52832 ble_app_uart example project. I added twis i2c slave functionality in this project, and the project is working fine. Whenever I flashed the project in the development kit using segger embedded studio, I can see the device is advertising but when i power off the development and power on it again the device is not advertising. I do not understand why is this thing happening. ble_app_uart project is working fine Without adding the i2c slave functionality. I observed this issue after adding the i2c slave part only. Please help me to solve this, why I am getting this kind of issue. I have attached the project as well sdk version: - 16.0.0 chip: - NRF52832 development platform: - Segger embedded studio Regards Pradeep . devzone.nordicsemi.com/.../test_5F00_BLE.zip

forum

6/1/2020

Replacing nrfjprog with JLinkExe

Hello, I've been evaluating the speed of nrfjprog vs JLinkExe to flash multiple devices and found out that i could use JLinkExe with .jlink scripts to save roughly 50% of the time spent on flashing. It makes a huge difference for me since I'll be flashing quite a few of devices in series. Now everything seems fine and flashed devices seem to be working but I would like to ask if there is something which nrfjprog does which is not so obvious and if I skip it I'll potentially have some issues? My .hex file is already merged with bootloader and softdevice so it is self contained. I'm pasting the .jlink scripts and a bash on to control the process which I'm using as a replacement to the following commands: nrfjprog --recover nrfjprog -e nrfjprog --program fw_merged_with_BL_SD_AP.hex nrfjprog -r nrfjprog --rbp ALL Flash.jlink r h loadfile fw_merged_with_BL_SD_AP.hex sleep 100 r

forum

6/1/2020

UART and UARTE state after reset

Hi, I'm experiencing some UART issues on nRF52832 where it seems like the peripheral is not correctly reset when doing a soft reset. After a soft reset I expect that the UART peripheral is completely reset but it seems like the RX fifo of the device still contains some bytes. I'm using flow control and what seems to happen is that the UART RX fifo is filled up either before or during the reset. making the RTS low. when zephyr 2.2.0 initialized the uart it will clear EVENT_RXDRDY without reading from from RDX. That locks up the RX completely for me because the uart will keep the RTS low. I can workaround the issue by fixing the driver with the code below. /* Empty the rx fifo for stale bytes */ while (nrf_uart_event_check(uart0_addr, NRF_UART_EVENT_RXDRDY)) { nrf_uart_event_clear(uart0_addr, NRF_UART_EVENT_RXDRDY); nrf_uart_rxd_get(uart0_addr); } However this code should not have to exist because the peripheral

forum

6/1/2020

Flashing the code on the external PCB with Nordic nrf52840 SoC without using PDK

Hello, We are looking for the ways using which we can program the nrf52840 SoC without using PDK. We want to set up an automatic programming jig and for that using the PDK is not suitable option. Kindly let me know possible alternatives for the same. Regards,

forum

6/1/2020