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21,591 questions

102
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Last activity 2017-04-21 12:55:46 +0200 by zcmm

Error 22 GATT_CONN_TERMINATE_LOCAL_HOST

Hi,all SDK:8.1.0 51822 S7 Edge(android V7.0)

i use the sumsung S7 Edge and the oppo R9S connect with my device,nRF Connect is often note:

GATT_CONN_TERMINATE_LOCAL_HOST(after discovery all service ).

And the oppo R9S ... (more)

25
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no
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no
answers
Last activity 2017-04-21 12:30:50 +0200 by nk

How to calculate precise delay in nrf51822 for Timer ?

i m new in nrf51822 controller so help me for coding of my question. any help will be appriciate. thank you.

24
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no
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no
answers
Last activity 2017-04-21 12:23:56 +0200 by arvind

Tanotis Global ARM7 ARM9 ARM11 J Link V8 ARM Emulator cortex m3

Hi everyone, i have J TAG V8 and when i am using this with keil software and try to debugging then its showing-

"The connected emulator can not be used with this software."

Reason: "Broken. No longer used"

help me ... (more)

35
views
no
votes
2
answers
Last activity 2017-04-21 12:19:34 +0200 by Tostikoning

Using app timer in sdk13

Hi all,

I am using a nRF52832 with SD S132 V4.0.2 ion SDK13.

My application currently uses TWI, SPI and BLE and also 1 wire (which is based on delays). Everything works fine. The 1 wire is used ... (more)

54
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no
votes
1
answer
Last activity 2017-04-21 11:56:10 +0200 by Petter Myhre flag of Norway

Timer interrupt don't work in ble_app_uart of SDK6.1.0

Hello everybody

I am working with the Raytac BLE Module "MDBT40", which is based on nrf51822.

And I am testing example project "ble_app_uart" in the SDK6.1.0 now.

But there are some problems when I add a new timer ... (more)

26
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3
votes
1
answer
Last activity 2017-04-21 11:43:00 +0200 by Simen August Tinderholt

nRF51 doesn't show up anymore aftering bootloader mode

Hello,

After (accidentally) entering bootloader mode on my nRF51 DK (PCA10028), the device doesnt show up either in the device manager or using nRFgo Studio (both not normally, as being in the bootloader mode where LD5 is blinking.)

In case ... (more)

15
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answers
Last activity 2017-04-21 11:39:38 +0200 by Ankit

Exact sequence of Peer Manager events at time of pairing.

Hi, I am performing "just pairing" using peer manager ( SDK 11.0 ) in my custom board which uses nrf52 chip.

I am getting this events

1 - PM_EVT_CONN_SEC_START, 2 - PM_EVT_CONN_SEC_SUCCEEDED, 3 - PM_EVT_PEER_DATA_UPDATE_SUCCEEDED - this events i am getting 4 times but sometimes ... (more)

61
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no
votes
2
answers
Last activity 2017-04-21 11:22:29 +0200 by Jørn flag of Norway

Blink an LED in Emulated System OFF ??

Hi, I would like to be able to provide a visual indicator such as a blinking LED when the chip is in the Emulated System OFF mode. Note that if the chip is in DEBUG mode and a System OFF ... (more)

17
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no
answers
Last activity 2017-04-21 11:17:09 +0200 by Sigurd flag of Norway

power consumption problem

Hi,

I'm using nrf51822 / sd130 / sdk 12.1. I am doing minimizing current consumption. My main function is like below. I checked no wakeup in sleep mode. But, current consumption changes variously. It is wide from ~30uA to 1 ... (more)

38
views
2
votes
1
answer
Last activity 2017-04-21 11:14:49 +0200 by Jørgen Holmefjord flag of Norway

sd_ecb_block_encrypt() related question [closed]

Hello, I just want to clarity the sd_ecb_block_encrypt() operation cases (S110).

In pp. 23.1.3 of RM (Shared resources) sayed:

The ECB, CCM, and AAR share the same AES module. The ECB will always have lowest priority and if ...

(more)

47
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1
vote
1
answer
Last activity 2017-04-21 11:04:45 +0200 by Bjørn Spockeli flag of Norway

JLinkExe equivalent of nrfjprog --erasepage

Hello, We're using JLinkExe for production programming. Is there an equivalent of the nrfjprog --erasepage command for JLinkExe?

I'm looking for the equivalent of

nrfjprog -f nrf52 --erasepage 0x0007F000-0x00080000

It would be cool if nrfjprog could provide information ... (more)

29
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answers
Last activity 2017-04-21 10:57:51 +0200 by Petter Myhre flag of Norway

Problem sending 6 bytes to multiple services using sd_ble_gatts_hvx

I would like to confirm my understanding of Problem sending 6 bytes to multiple services using sd_ble_gatts_hvx

I use nrf52832 sdk13.0.0

BLE SPI is master. I dropped the SCK to 1 Mhz I send x18 bytes of data ... (more)

16
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no
answers
Last activity 2017-04-21 10:49:19 +0200 by MVR

making Tune instead of Beep using Bizzer with PWM library

i have added pwm into proximity profile example and now i am able to make beep using buzzer with pwm library.Now i want to make some sort of Tune instead of beep.

Can any one help!....Thanks.

16
views
no
votes
1
answer
Last activity 2017-04-21 10:49:12 +0200 by Jordi

Hardfault when using both UART and GPIOTE, how can I solve this problem?

Hello,

I feel like this question has an answer similar to this question, but I can't seem to get it working https://devzone.nordicsemi.com/questi...

I am using the nrf51422 chip on a board I designed myself and ... (more)

63
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no
votes
2
answers
Last activity 2017-04-21 10:41:39 +0200 by Ray Breslin

Help with restarting, debugging and size-limitations for DFU procedure needed

Hello,

while I already managed to solve a couple of problems regarding a proper handling of the DFU procedure in my previous topic here, there are still 3 problems that remain where I could use some help...

1) How can ... (more)

47
views
no
votes
1
answer
Last activity 2017-04-21 10:31:09 +0200 by Bjørn Spockeli flag of Norway

Does single bank bootloader in SDK7.1 support ZIP-file ?

Does single bank bootloader in SDK7.1 support ZIP-file ? I get error REMOTE DFU INVALID CRC ERROR in the end of flashing by nRF Toolbox when I use ZIP. If I use hex-file without init file I will send file ... (more)

35
views
1
vote
1
answer
Last activity 2017-04-21 10:25:26 +0200 by g.joshi

Interfacing External Sound Sensor with nRF52832

I have made following connection between nordic device and external sound sensor:

  1. VCC--> 5V
  2. GND--> GND
  3. GATE --> Pin 04
  4. ENVELOPE --> A0

I would like to know how to proceed with the code in eclipse. i have a code but i ... (more)

55
views
3
votes
2
answers
Last activity 2017-04-21 08:51:02 +0200 by makerTim

Inversense DMP with nRF51

Hi everybody,

Chip: nRF51422

Board: PCA10028

Firmware: S130_nRF51_2.0.1

I found it really difficult to write DMP driver for nRF51. I've already downloaded motion_driver_6.12 from the official website.

How do I translate it to meet nRF51 APIs ... (more)

27
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no
votes
2
answers
Last activity 2017-04-21 08:45:40 +0200 by makerTim

nrf51 TWI burst write error [closed]

Hi everybody,

Chip: nRF51422

Board: PCA10028

Firmware: S130_nRF51_2.0.1

The system hangs when doing burst write reg. MPU9255 can work fine if all writes are [reg, data[0]]; How to solve the problem?

uint32_t i2c_write(unsigned char addr, unsigned ...
(more)

51
views
no
votes
2
answers
Last activity 2017-04-21 08:09:19 +0200 by mr_sev

how to i use external interrupt ?

Hi, i am new in nrf51822. i want to make a pin as a external interrupt pin, whenever it get high to low pulse it will call in ISR. here i am unknown how to write an ISR here.

please ... (more)

38
views
no
votes
1
answer
Last activity 2017-04-21 04:28:17 +0200 by nine-fox

Can I use one NRF52832 as BLE HID keyboard, and another one is peripheral?

Hi,

I am newbie to NRF52 devices. My scenario is, I want to create a split keyboard which is left-hand part and another is right-hand part. Both 2 parts are wireless. I need these 2 parts WORK LIKE JUST ONE ... (more)

43
views
1
vote
1
answer
Last activity 2017-04-21 01:08:19 +0200 by john

nrf51822 sniffer confusing wireshark output

Hi all,

I'm trying to use the nRF51822 sniffer to troubleshoot my TI CC2650STK sensortag ble communication and the output is slightly confusing. The problem I am having with the sensortag is that the output I am getting from ... (more)

11
views
no
votes
no
answers
Last activity 2017-04-21 00:31:37 +0200 by barry

iOS NrfConnect crashes and NrfToolbox with heart sensor

So we have the Arduino 101 board talking to a heart rate sensor MAX30100. When we run the nrf connect app on android it is able to connect to the sensor with no issues. When we try connect through the ... (more)

27
views
no
votes
1
answer
Last activity 2017-04-21 00:15:15 +0200 by endnode

I2S does not work as expected on nRF52832

Hello,

some time ago I was struggling with interfacing an I2S microphone with the nRF52832. That remained unsuccessful. My conclusion back then was that the selected I2S microphone and the nRF52832 were incompatible (the mic wanted 32-bit word size, which ... (more)

15
views
no
votes
no
answers
Last activity 2017-04-20 21:58:17 +0200 by chalecampb

Disconnect during Connection Process after Successful Disconnect

BTLE connection failure.log

Hi guys,

We have an issue with some iOS devices that are disconnecting with reason 0x08, the connection timed out. The test procedure is,

  1. We use various devices (5 iOS devices right now, also some Android ...

(more)

547
views
2
votes
4
answers
Last activity 2017-04-20 21:35:00 +0200 by Mark

LCD Display Driver

Hello,

I bought a SainSmart display which fits on the PCA10028 development board. This display is a 16x2 character display with a HD44780 display contoller (I guess). Does anybody know if there is a driver available that runs on the ... (more)

74
views
1
vote
3
answers
Last activity 2017-04-20 20:13:11 +0200 by Paulo Becker

Ble Disconnect from peripheral and Stop Advertising

Hello ,

I'm working on custom board, I'm trying to disconnect from the Central (Andriod app) when the battery is below certain level and stop re-advertising. Below is the piece of code i used:

/* Disconnect and then disable advertising ... (more)

64
views
2
votes
1
answer
Last activity 2017-04-20 20:13:00 +0200 by AmbystomaLabs

nRF52840 Meandering Antenna Placement & Layout Questions

Hi,

See attached photo for layout placement of the trace antenna.

image description

Altium PCB File: 108-0013-01 PCBA MAIN.PcbDoc

Background:

This is a design for a wearable watch style product. Tight design mechanically, and hard to find an ideal placement for ... (more)

78
views
1
vote
2
answers
Last activity 2017-04-20 17:23:25 +0200 by Stian flag of Norway

Is it physically possible to set UART RX and TX to same GPIO pin?

I'm trying to implement send && recieve through one wire. Handling of pin state, if it is input or output is done via SW. Also it is going to be half-duplex only.

Is it possible to do something like this ... (more)

30
views
1
vote
1
answer
Last activity 2017-04-20 16:45:15 +0200 by Jørgen Holmefjord flag of Norway

SAADC always busy

Hi!

I am working with PCA10040 (nRF52), s132 and SDK 12.2.0.

I am using the example experimental_ble_app_eddystone. I have configured one slot as TLM, so it reports battery (value should be refreshed every 30 advertisments).

However, the battery ... (more)

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