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Last activity 2017-10-17 13:51:10 +0200 by Martin Børs-Lind flag of Norway

MPU9250 is not showing output

i am working with mpu xx example given in nordic website. it seems code is working fine i.e. compiling and dumping into nrf52 DK, But not showing any output values.

i was trying to run nrf5-mpu-simple example but not ... (more)

41
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1
answer
Last activity 2017-10-17 03:47:55 +0200 by Alex

Performing DFU with nRF Connect v1.8 Fails to Switch from App to Bootloader - Worked on 1.7.5

Since upgrading to nRF Connect on my IOS device the DFU won't reconnect to the BLE in the boot-loader after initiation from the application.

The device will migrate to the boot-loader and begin advertising but nRF connect doesn't ... (more)

34
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no
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1
answer
Last activity 2017-10-16 15:56:36 +0200 by Mateusz

Is re-pairing necessary with MITM protection? [closed]

I am working on a peripheral. This peripheral is IO display only. On the other side, the central is keyboard + display. I have a single, custom service with a single characteristic. Said characteristic is readable and writable and requires both ... (more)

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1
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1
answer
Last activity 2017-10-16 15:54:20 +0200 by Hung Bui

Hardware event handler

Hello, I need to connect an event handler (i.e. a function) to two NRF_RADIO events: -NRF_RADIO->EVENTS_ADDRESS -NRF_RADIO->EVENTS_READY

I know I should use the NRF_RADIO interrupt handler, but I can't. I'm using the bluetooth and then ... (more)

68
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1
answer
Last activity 2017-10-12 15:47:48 +0200 by Martin Børs-Lind flag of Norway

How can i interface MPU9250 with nRF52 DK

As i am new in embedded programming,I was trying to connect MPU 9250 with nRF52 DK by using given examples. now it is showing error

  #error "No MPU defined. Please define MPU in Target Options C/C++ Defines"

where ... (more)

51
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1
answer
Last activity 2017-10-12 10:44:12 +0200 by Sigurd flag of Norway

how to define gpio pins and generate pwm on gpio pins?

Hi There, i am new to nrf51822 and new to program this kind of controller.I searched over the website, I couldn't find a good introductory documentation for programming the nrf51822, specifically the nrf51-dk. i have two problems 1 ... (more)

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Last activity 2017-10-12 07:25:33 +0200 by Ashish

Flash download failed - could not load file

Hi everyone ! I'm working with nRF 52840. I've downloaded softDevice s140 using Keil. Afterwards, I selected the target to nRF52840_xxaa and then build the project of Heart Rate Application and tried to download the code, I get the ... (more)

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Last activity 2017-10-11 13:59:45 +0200 by marmio

Advertising not starting after disconnection -s140

Hi,

I have a problem with advertising, application starts advertising and makes connection normally, but after disconnection advertising is not starting. sd_ble_gap_adv_start() returns no errors. It's a program based on ATT_MTU throughput example with openthread added.

Thanks in advance

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1
answer
Last activity 2017-10-11 11:29:25 +0200 by endnode

GPIOTE Read byte

hi,

I have an external device only one pin, need to use GPIO to read the signal, how do I deal with it?

i need read byte.

18
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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)

33
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1
answer
Last activity 2017-10-11 05:56:37 +0200 by mantap

how to get data ADXL345 using nRF51822 via arduino IDE and mbed compiler

I've already tried before using ADXL345 using nRF51822 using mbed compiler this is the link.. https://os.mbed.com/users/asyrofi/cod...

but that program can't get ADXL345 data, just UART nRF51. I've tried using nrf51822 too ... (more)

45
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1
answer
Last activity 2017-10-09 21:50:34 +0200 by B

Has anyone used nf51 bluetooth with some app mobile?

Has anyone ever used nf51 bluetooth with the app inventor?

I have values ​​coming out of the microcontroller terminal. I want to send them to a mobile application using the app inventor.

But I do not know how to do ... (more)

28
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1
answer
Last activity 2017-10-08 19:07:52 +0200 by endnode

nRF52840 Not detected

Hi,

I bought the nRF52840 in april. The problem is that my iPad doesn't detect the nRF52840. Also, when Itry to upload a .hex file on it, the board tells me that the upload failed.

I am a beginner ... (more)

42
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no
votes
1
answer
Last activity 2017-10-07 11:18:56 +0200 by endnode

What is the bandwidth of nRF51 Series SoC?

Im currently using NRF21l01 (32 byte) however I need more bandwidth any suggestions?

35
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Last activity 2017-10-07 07:54:12 +0200 by Rahul

Any one can help me with source code of mpu9250 and nrf52 DK

As i am new i don't know from where i have to start if anyone help me with this it would be a great help to me

57
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2
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2
answers
Last activity 2017-10-05 10:27:44 +0200 by Massimo Pilia

Application does not start beside DFU bootloader

Hy everybody,

I'm trying to implement DFU bootloader in our custom board, starting from the "bootloader_secure_example", where I just changed leds and button pins in order to adapt them to our board. I successful flashed the soft device and ... (more)

63
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1
vote
2
answers
Last activity 2017-10-04 12:11:23 +0200 by Martin Børs-Lind flag of Norway

issue antenna

Hi everybody,

I have an issue with my application, I want to use the ble with the same antenna that it use in the development board PCA10036, Could you please tell me if the matching and the circuit for antenna ... (more)

57
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1
vote
1
answer
Last activity 2017-10-04 10:34:18 +0200 by David Edwin

How i interface WiFi module with nRF52832?

Hello sir,

we have completely develop product using nRF52832 and S132, sdk13.1, and its great working fine with BLE. But for same application we want to use wifi module for controlled by anywhere. One device is working with BLE ... (more)

39
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no
votes
1
answer
Last activity 2017-10-03 13:20:05 +0200 by Sigurd flag of Norway

start and stop advertising packet of every 5 min?

hi, i want to advertise packet every interval of 5min. how can i start and stop advertise packet.

71
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1
vote
1
answer
Last activity 2017-10-03 12:32:35 +0200 by Sigurd flag of Norway

Can you not call sd_ble_gatts_hvx() in a loop?

I basically need clarification on the last point of this question, which seems to imply that: the first time you call sd_ble_gatts_hvx() while the SoftDevice's transmit buffer is full, it reliably returns NRF_ERROR_RESOURCES, but you should not call it ... (more)

21
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no
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1
answer
Last activity 2017-10-03 10:08:59 +0200 by Sigurd flag of Norway

RTC and nrf_timer2 with BLE SOFTDEVICE nRF51_SDK_8.0.0

hi, i want to use 2 timer in my application and BLE continuous advertising. i'm able to do with NRF_TIMER2 and BLE continuous advertising and it's working fine. but when i add RTC0 part in my code, it ... (more)

52
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no
votes
2
answers
Last activity 2017-10-02 22:00:11 +0200 by Emil Lenngren flag of Sweden

nrf52840 can we scan while connected to a device in BLE

I always have to stop scanning before making a connection. If i keep the scanning on, the two devices wouldn't connect.

40
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no
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1
answer
Last activity 2017-10-02 10:41:36 +0200 by Sigurd flag of Norway

how to send and receive data using i2c and spi protocol

hello there, i want to send and receive data using spi and i2c protocol and i am using nrf51422 .how to interface which pins should i use to make spi and i2c communication.

good help appriciated!!

cheers, Abhijeet

34
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no
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1
answer
Last activity 2017-09-29 18:21:26 +0200 by Febin

How to set up a GAP peripheral using nRF connect ?

I am trying to use nRF connect's advertiser feature to simulate some sensor output for my testing. The sensors use BLE advertisements with scan response to send out data. The issue I am facing is that the advertisers have ... (more)

94
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Last activity 2017-09-28 15:45:08 +0200 by Sansei

Is there any relation between connection parameters and occasionally disconnection

I have a system, with cc2540 as central and n51822 as peripheral with s130. Sometimes while they are close to each other, the connection link gets lost. I disabled updating the connection parameters on the client(cc2540), and I set ... (more)

1k
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no
votes
1
answer
Last activity 2017-09-28 08:53:54 +0200 by Jørgen Holmefjord flag of Norway

which pins of nRF52832 can support PWM and how many pins can support.

i need to connect 8 DC motors to it,using PWM channel.It is possible to connect with it

192
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2
votes
2
answers
Last activity 2017-09-27 16:59:21 +0200 by endnode

what are the documents require to start programming with nRF52

examples are given but how can we apply them as per our requirement

131
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5
votes
2
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Last activity 2017-09-27 11:41:04 +0200 by Martin Børs-Lind flag of Norway

RSSI switching values

Hi, (I'm a computer scientist, please be kind)

In the below attached image, I have collected the data outdoors (so no signal reflection or signal fading) from a single BLE beacon at two different pre-set power levels. I see ... (more)

31
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answers
Last activity 2017-09-26 20:52:47 +0200 by Vishb

How i use battery service level measurement?

Hello,

I am using NRF52832 boars s132 and sdk is 13.1. I have developed my application is read analog accelerometer valie and send to mobile apps. Now i want to also battery indicator in my android apps. So how ... (more)

165
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4
votes
1
answer
Last activity 2017-09-26 09:26:48 +0200 by MANGO

Can somebody provide me the the tutorial of how to interface nrf51822 with MPU6050 ?

Hi there, I am begineer for nrf51822 and I want to interface MPU6050 WITH nrf51822 so can somebody provide me the tutorial with full detail.i want to read just raw values of mpu6050. How to use Neil I'd ... (more)

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