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Last activity 2017-07-21 18:13:10 +0200 by binhnguyens

Are there any particular practices or instructions should i follow if I want to write a custom library

Are there any particular practices or instructions should i follow if I want to write a custom library

We are trying to write a library for LEACH protocol and it is a network algorithm and we can't find an ... (more)

9
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Last activity 2017-07-21 17:21:48 +0200 by remy

my remote 3 of the nrf52's kits doesn't appair on bluetooth with windows or ubuntu?

hello I am on 2 projects the nrf51 and the nrf52 , but I met some problems about the bluetooth on ubuntu and windows . Can you help me please ?

30
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Last activity 2017-07-21 09:34:24 +0200 by Jørgen Holmefjord flag of Norway

I am running MCP9808 on NRF52 EVB, i have this following program which is not giving the correct values on terminal display

I have this program running on KEIL 5, what could be the problem with the code and Do you guys have any sample code for mcp9808? Note- I am using the wired connection not a Bluetooth app to sense the ... (more)

38
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no
votes
1
answer
Last activity 2017-07-21 08:53:40 +0200 by Jørgen Holmefjord flag of Norway

OTA tutorial ?

Hello,

I'm looking to implement the OTA on my nRF52, but I couldn't find any help online. I would like to do it with my iOS and my Android app.

Does anyone have a tutorial link to help ... (more)

31
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Last activity 2017-07-21 05:45:50 +0200 by kte608

Where can I find a simple example project with nrf52, s132, and segger debugging? [closed]

Preferrably under linux using gcc and the command prompt.

I am most interested in project setup, loading the soft device, and making sure all the core systems are working.

If possible, the example should be with the latest SDK (12 ... (more)

64
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answers
Last activity 2017-07-20 14:34:28 +0200 by Bhaskar

NRF52832 - Monopole Antenna on 24mm Dia PCB

Hi,

I need to design a small nRF52 board On 24mm Dia 2-layer PCB, same like nRF51822 Bluetooth Smart Beacon Kit (nRF51822 Coin-Cell design). Please find the attached Schematics and layout files for your reference.

For mono-pole antenna,Layout Reference ... (more)

30
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Last activity 2017-07-20 10:12:59 +0200 by Akinobu Yokawa

Cannot receive UART on ble_app_uart with nRF52382

I am running the ble_app_uart example in SDK 13.0 with nRF52382.

  • First issue

The app can receive data via UART only when I use "Termite" as a terminal emulator. If I use "TeraTerm", "Putty" and "RealTerm" to send data ... (more)

32
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no
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1
answer
Last activity 2017-07-19 14:49:20 +0200 by q

Only one service characteristic appears in nRF Connect

Hello,

I'm implementing a custom service and followed the tutorial here. I added a second characteristic by adding its own char_b_init function, creating a CHAR_B_UUID, creating a new char_b_handles in the my_service_t struct. However, only one of the two ... (more)

67
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Last activity 2017-07-19 02:05:55 +0200 by ChipChipperson

Examples in the NRF52 SDK that show an example of very frequent advertising data packet intervals?

In the examples directory of the NRF52-SDK are there any examples that demonstrate a peripheral sending advertising packets at a very frequent rate?

44
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1
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answers
Last activity 2017-07-17 13:16:49 +0200 by Stian flag of Norway

TWI bus freeze after several thousand tx/rx cycles

I'm periodically polling a TWI sensor with a blocking call, as in

ret_code_t err_code;
m_xfer_done = false;

err_code = nrf_drv_twi_tx(&i2c, address, subAddress, 1, true);
APP_ERROR_CHECK(err_code);
while (m_xfer_done == false) {};

if (err_code == NRF_SUCCESS) {
        m_xfer_done = false;
        err_code = nrf_drv_twi_rx(&i2c, address, dest, count ...
(more)

72
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1
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answers
Last activity 2017-07-16 16:48:07 +0200 by PB

Secure Serial DFU, app with UART stuck at bootloader

Hello,

I'm working on an UART application which uses experimental_bootloader_secure_serial bootloader. I've done a similar thing before with SDK-11 (though not a secure DFU) and after getting through building a secure bootloader, signing, etc. I was able to ... (more)

55
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no
votes
1
answer
Last activity 2017-07-15 14:31:40 +0200 by Manas

IoT DFU on Contiki using CoAP Blocktransfer

[Aim] I am working on a project where I aimed to Integrate/Develop firmware management system using Contiki running over Nordic NRF52.

[Components] Contiki running over Nordic NRF52 + LwM2M (Management server) + CoAP block transfer (Transport Medium) + IoT DFU (Nordic's ... (more)

58
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no
votes
1
answer
Last activity 2017-07-14 20:51:26 +0200 by vich

NRF52 not able to establish a connection (0x3E)

Hello guys,

Hope someone can help me here. I am working with the NRF52 and want to use Zephyr. I am able to flash it. Using the nrf52 as periphal does not cause problems, I can connect with it and ... (more)

43
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no
votes
1
answer
Last activity 2017-07-14 16:30:28 +0200 by Hung Bui

How does radio behave if HFXO is not stable?

When you start a receive task, what will the radio do if the HFXO is not stable? Not begin to ramp up until the HFXO is stable, OR begin to ramp up but not become active until the HFXO is ... (more)

78
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1
vote
3
answers
Last activity 2017-07-13 13:04:31 +0200 by Jørgen Holmefjord flag of Norway

a Nrf52 function mapping to nrf51

Hi all,

I am working on interfacing an SD card as well as an OLED Display with my nrf51422 on SDK 12.2.0.

Although, both are on SPI and hence i need to configure them as multiple slaves using ... (more)

418
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5
votes
2
answers
Last activity 2017-07-13 10:37:12 +0200 by Jørgen Holmefjord flag of Norway

NRF52 as SPI master with Multiple Slaves

Hello, my project has 3 different devices (2 sensor and flash memory) on the same SPI bus all with their own CS. I ran across the following question, which has a response for a workaround for the NRF51. Upon jumping ... (more)

94
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3
votes
2
answers
Last activity 2017-07-13 02:33:11 +0200 by Youngjun

nRF52832 connection problem with some android device

Hi, I'm using nRF52832 with sdk 13.0.0(softdevice 4.0.2). I had trouble to connect nRF52 and some android 7.0(or upper version) smart device. I tested samsung galaxy tap 10.1 A6 (android 7 ... (more)

43
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1
vote
1
answer
Last activity 2017-07-12 20:11:50 +0200 by John DeWitt flag of United States

Examples of nRF52 Development Kit connected to piezo sensor?

Hello,

I've done this with an Arduino and 1Sheeld Bluetooth LE shield, but want to try with the nRF52 dev kit. Just looking for any starter code/examples/tutorials to help me with integrating a basic piezo sensor to ... (more)

41
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no
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no
answers
Last activity 2017-07-12 08:07:45 +0200 by Mike Wirth

nRF52 BLE debugging tutorial (e.g., using error logging macros)

Folks,

Have been using Keil MDK Lite in the past, in a Win VM. Larger code (over 32KB) plus the convenience of running without a VM layer have led me to switch to NetBeans/gcc/gdb directly on my MacBook ... (more)

98
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7
votes
1
answer
Last activity 2017-07-11 13:24:57 +0200 by Emil Lenngren flag of Sweden

Radio Timing and PPI

Hi,

to investigate a timing problem in my Bluetooth stack, I've hard wired the Radio ADDRESS and END events to a GPIO pin using the PPI. The ADDRESS event is used to toggle the pin to high, and the ... (more)

64
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1
vote
1
answer
Last activity 2017-07-11 11:00:35 +0200 by Jørgen Holmefjord flag of Norway

Can we connect two I2C(TWI) masters at same time to nrf52?

I am specific about master as I have to connect two simultaneously(obviously to two different pins pair). Plz provide any code outline if you have, Thank you in Advance

64
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no
votes
1
answer
Last activity 2017-07-10 18:58:37 +0200 by Sigurd flag of Norway

current consumption of nRF52 DK

Hi, I measured the current consumption of nRF52DK with the original code of "nRF5_SDK_13.0.0_04a0bfd\examples\ble_peripheral\ble_app_beacon ", based on the current measurement guidelines. The results is that the current in the system on idle mode is 2.1uA ... (more)

65
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3
votes
2
answers
Last activity 2017-07-10 18:46:41 +0200 by Mabbas

NORIC eveloution board without debugger

Hello,

I want to use NORDIC nrf52 to perform some power consumption Analysis. Is there any eveloution board from NORDIC that don,t have debugger connected to it? I want to use an external debugger to configure the board and ... (more)

51
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no
votes
3
answers
Last activity 2017-07-10 11:58:09 +0200 by Mahesh Venkitachalam flag of India

Can adafruit feather be programmed with nrf51 sdk?

I'm not sure exactly how to word that,

I am about to try and get the adafruit feather to consume less power in standby and I've been told the arduino library isn't well documented so I am ... (more)

48
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no
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no
answers
Last activity 2017-07-10 05:17:22 +0200 by ALE

LFXO active with 0.5μA higher current

Hi, On the 3.30 of nRF52832_Rev_1_Errata_v1.5.pdf, the sleep current with LFXO active is 0.5μA higher. I am using a nRF52832 module with the low frequency crystal oscillator installed and "nRF5_SDK_13.0.0_04a0bfd\examples\ble_peripheral\ble_app_beacon "coded ... (more)

49
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2
votes
1
answer
Last activity 2017-07-08 14:25:37 +0200 by Turbo J

Jlink RTT Viewer not detecting Target Device Automatically

Hi,

I installed the latest version of Jlink 6.16f. I connected my nrf52-dk and on opening the RTT viewer, I always need to specify the target device manually instead of it being detected automatically. I am also attaching a ... (more)

25
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no
votes
1
answer
Last activity 2017-07-08 01:50:51 +0200 by micallef25

device match

Hello, I am trying a simple btle application where one mcu will send a "help" message and another will respond with its address. The mcu that asks for stores the address of the responder and sets the dev match readio ... (more)

36
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no
votes
1
answer
Last activity 2017-07-07 12:52:03 +0200 by Petter Myhre flag of Norway

advertise solicited service UUID [closed]

badAdvert.c

SDK132 SD 4.02 #define PAVLOK_BASE_ADV_UUID (0x1b00)

I am always getting NRF_ERROR_INVALID_PARAM (7) on return of the advertising when I add the scanrsp structure in the advertising init call

It is failing in the function uuid_list_sized_encode on line ... (more)

32
views
2
votes
1
answer
Last activity 2017-07-07 08:59:41 +0200 by endnode

NRF52832 - real time tasks(CAN Open)

Would it be advisable for system design to use CAN(CAN Open) and BT simultaneously on nRF52832 IC?

Why this bothers me is because capabilities of nRF BT MCU's are growing both in processor power and memory size, but ... (more)

31
views
1
vote
1
answer
Last activity 2017-07-06 16:35:00 +0200 by Andy

DFU - Copying application from Bank1 to Bank0? [closed]

Hello,

I'm currently experimenting with the dual-bank bootloader in SDK 13.1. According to the documentation, if the new application can be activated, it is copied from bank 1 to bank 0.

Where and when does this happen? I ... (more)

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  • Resolved questions: 9858
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  • Total questions: 23733