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Last activity 2017-11-20 07:18:59 +0200 by efiLabs

nrf5x eclipse in linux again

this issue might also be one of others than myself

my main development environment is based on linux ... firmware, QT, android and whatever comes along ... i used to write firmware starting with the 8085, z80, 68k and for the last ... (more)

10
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Last activity 2017-11-19 15:56:13 +0200 by likent

nRF51822 ,cannot find headers which were involved in imported into keil5

image description image description as this screenshots show, i add some headers to nRF_Libraries, and add the directory of the folder nRF_Libraries to Options for targets /c++/include paths,but after building project,I cannot open the header , e.g. boards.h by rightClicking ... (more)

19
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Last activity 2017-11-17 05:42:50 +0200 by milav flag of India

Mobile Application

Hello,

I want to transfer and particular size image from mobile phone to nrf51822 Board.

can anyone know the application which can transfer an jpeg image file from phone to nrf51822 board?

Please help me...

Thank You

25
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Last activity 2017-11-16 17:04:54 +0200 by Brendan PG Ambayan

Eddystone beacon using nrf51822/waveshare ble400 and blackmagic probe in Arduino IDE

Hi! I am currently doing my project on BLE beacons. I am using nordic's nrf51822 and waveshare ble400. I am using a blackmagic probe instead of jlink to program it using Arduino IDE. I want to use sandeep's ... (more)

28
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4
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answers
Last activity 2017-11-16 14:33:10 +0200 by Võ Thanh Hiếu flag of Viet Nam

Differences in nRF51 chip versions

We are moving from a PCB using a nRF51822 QFAB module to a newer PCB using an nRF51822 QFAC module.

We observed that with the new QFAC PCB we have a significant connection drop rate, >20 times an hour. Logging ... (more)

818
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Last activity 2017-11-15 09:55:02 +0200 by Haaris

nRF51 DK mbed I2C/TWI

Hi,

I'm currently building a BLE multi-sensors device, with mbed online IDE. I succeed in implementing BLE API, and releasing a first .hex firmware with multiple services and characteristics.

Now, I want to replace my fake characteristic values by ... (more)

34
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Last activity 2017-11-14 17:05:06 +0200 by Sansei

Nrf51822 stops handling GPIOTE->PORT interrupts

Hi engineers, Here we are facing a critical problem in which the NRF51822 stops handling/processing the GPIOTE->PORT interrupts after some days good working. This problem is occurring randomly whereby our system will stop working completely. Then, we have ... (more)

15
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Last activity 2017-11-14 15:50:33 +0200 by mmarty

nrf51822 flashing using image in external flash

Hello everyone,

I am using nrf51822 chip that has functionality to flash bl, sd or app using mobile app application. I want to reuse this functionality in order to have ability to flash device using very same dfu_package but instead ... (more)

32
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Last activity 2017-11-08 00:33:44 +0200 by DYNAMICTOYS

nRF51822 - fail to upload device firmware through BLE bootloader. ( used to be good)

HI,

I am using nRF51822 S130, SDK12.3.0

I created private key for application code and public key for bootloader. Just few days ago, the zip file can upload to the device ( when device in DFU mode ) through nRF ... (more)

56
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Last activity 2017-11-07 22:00:51 +0200 by Mikael L.

nRF51822 BLE and SPI slave

Hi,

I am working with the BLE Nano module and the mbed online compiler. I have the Nano acting as an SPI slave. The problem occurs when I try to add BLE functionality. As soon as I add the ble ... (more)

25
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Last activity 2017-11-06 11:40:28 +0200 by Trong-Nghia Cheng

How to reconfigure/reset BLE? nrf 51822 - sd s130 2.0.1

Firstly the develop environment.

Windows 10 KEIL as IDE Device: nrf 51822 - sd s130 2.0.1 - SDK 12.1 nRF5_SDK_12.0.0_12f24da.zip

Use case: We have 2 application mode for BLE

Application 1 (using a 3th. framework): only ... (more)

44
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Last activity 2017-11-06 08:58:10 +0100 by ramakrishna

How the ble peripheral knows that ble central was disconnected? if i trying to send continuously some packets to ble peripheral some times peripheral is not responding? what might be the issues?

How the ble peripheral knows that ble central was disconnected? if i trying to send continuously some packets to ble peripheral some times peripheral is not responding? what might be the issues?

23
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Last activity 2017-11-03 12:26:24 +0200 by jdelapena

Sending BLE Authentication to Nordic Device (NUS)

I have a device that runs with nRF51 chip with the NRF UART Service (NUS). I have a Raspberry Pi 3 and I want them to communicate.

The device requires an authentication packet that needs to be sent within the ... (more)

21
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answers
Last activity 2017-11-01 11:10:22 +0200 by phanhust

lost advertising after ble disconnect

hi, i'm newbee in BLE,now i have a trouble about advertising in NRF51822.

in my project,after BLE disconnect, I can't see BLE again that mean BLE can't advertising continuously.

t tried in example in SDk11 ... (more)

44
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Last activity 2017-10-30 19:09:15 +0200 by B

Why is the function "gpiote_init()" conflicting with the bluetooth code?

Hello, I tried to add the code of the bluetooth tutorial called "Bluetooth low energy Characteristics, a beginner's tutorial", with a code that measures the delay of two forms of waves, but when debuging them together there is a ... (more)

34
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answers
Last activity 2017-10-30 15:42:51 +0200 by abosch

Update firmware from flash

Hi all,

I'm using nrf51822, sdk 6.1 and s110 v7.1.

My idea is to use the GPRS module of my board to receive the new firmware (the module works with UART), save it to the flash(if ... (more)

142
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answers
Last activity 2017-10-28 07:01:22 +0200 by milav flag of India

File Transfer in DFU mode

Hello

can we do JPEG file transfer in DFU mode instead of .Hex File?

Thank You

17
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answers
Last activity 2017-10-27 17:11:41 +0200 by nagaraj

Debug mode is not working with IAR and nrf51822

Hi, I am using nrf51822 (pca10004) with SDK110 softdevice programmed through j-link LITE SEGGER. After programming the custom code (Basic I2C code) and when we try to debug the code, we are getting "Warning: T-bit of XPSR is 0 but ... (more)

42
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Last activity 2017-10-26 16:14:33 +0200 by milav flag of India

flash write with defined address

Hello,

I want to save Image data which are come from the central device to flash memory of peripheral side.

The image data size is vary from 3KBytes to 10KBytes.

i want to save at particular address so that application ... (more)

31
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Last activity 2017-10-25 09:42:05 +0200 by Ricky

Mesh example light_switch can not work in PCA10028 downloading by SEGGER embedded studio

Environment:

mesh SDK: V0.10.1

example: light_switch

compile and download IDE: SEGGER embedded studio v3.26a

Problem:

light onoff server and client can not provide success and control.

BUT:

When download using nrfjprog, it woks!

Question:

Is there some ... (more)

47
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answers
Last activity 2017-10-25 05:18:43 +0200 by misslove

Simulated I2C

HI! The use of simulation software I2C and the sensor module communication in my program, without the use of the protocol stack, the normal running of the program, but after entering the protocol stack, when I want to read the ... (more)

63
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1
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answers
Last activity 2017-10-23 16:25:25 +0200 by purgoufr

how to use Simple UART driver?

From the SDK8 s110 device, I want to send the string("hello") to the other device via the uart, and in the meantime I want the battery voltage to come through uart.

I defined ;

void uart_event_handle(app_uart_evt_t * p_event)
{
    static uint8_t ...
(more)

34
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answers
Last activity 2017-10-19 16:40:33 +0200 by alidaf

nRF51822 broadcasting off-the-shelf?

Should these beacons be advertising as bought off-the-shelf? I've got six and was expecting to be able to pick up their advertisements but I'm getting nothing.

28
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1
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answers
Last activity 2017-10-18 00:57:33 +0200 by Rajneesh

nRF51 DFU for BLE_central example

Hello Everyone,

Is there any example code is available which supports DFU in central mode for nRF51 devices?

Any help will be appreciated.

Thanks

Regards,

Rajneesh

47
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no
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no
answers
Last activity 2017-10-17 18:15:05 +0100 by Ruediger

Maximum power consumption

Hi, were are looking forward to redesign our PCB. The nRF51822 will communicate via I2C which sinks up to 3 mA and 15 IOs will source the maximum rate of 15mA. Additional to this, the Bluetooth will consume power.

I ... (more)

107
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answers
Last activity 2017-10-17 15:18:18 +0200 by ASHISH

how to write a functions(program) for transmitting and receiving data over uart using nrf 51822?

Hi, there i am using nrf51822 to communicate with quectel ec25 .i want to send AT commands over uart and receive some response from quectel.for eg. i am sending a "AT" command i should get "ok" response in return ... (more)

49
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answers
Last activity 2017-10-16 09:19:43 +0200 by Jørn flag of Norway

can not disable Rx or TX

i need to disable RX when data was transmit and enable RX again when data transmit complete. i tried :

NRF_UART0->TASKS_STOPRX = 1;
NRF_UART0->TASKS_STARTRX=1;
NRF_UART0->TASKS_STOPTX=1;  
NRF_UART0->TASKS_STARTX=1;

( i use SDK11 pca10028) but nothing happend,i still ... (more)

43
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answers
Last activity 2017-10-15 10:25:40 +0200 by lalit-tmt

iot stack compile for nrf52822

Hi,

I get following error when i try to compile nRF5_IoT_SDK_v0.9.x for target nrf52822

compiling x509_csr.c... assembling arm_startup_nrf51.s... <command line>(13): error: A1517E: Unexpected operator equal to or equivalent to < compiling x509_crt.c... compiling system_nrf51.c ... (more)

31
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answers
Last activity 2017-10-11 07:30:44 +0200 by KETAN_PATEL

How to turn on Leds only for advertising time?

Hi, i am using SDK v8.0 and in main function, initialization like this err_code = bsp_init(BSP_INIT_LED | BSP_INIT_BUTTONS, APP_TIMER_TICKS(100, APP_TIMER_PRESCALER), button_event_handler); and

in advertising_start function, calling function is err_code = bsp_indication_set(BSP_INDICATION_ADVERTISING); this is working. but i want like this ... (more)

27
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Last activity 2017-10-02 11:16:33 +0200 by Sigurd flag of Norway

NRF51 Custom Board - Keil Works but Makefile Does Not

Hello,

I have an NRF51822 custom board. I am trying to flash the code under

C:\Users\Home\Desktop\nrf51\nRF5_SDK_12.3.0_d7731ad\examples\ble_peripheral\ble_app_uart\pca10028\s130

I am trying to flash it with KEIL and it works. I ... (more)

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