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Last activity 2017-08-15 12:38:49 +0200 by zqclzz

Why does the hardfault "line_num=1436 , rem.c" occur?

Hello, dear Nordic employee,

MCU: 51822QFACA1 The using SDK is : SDK 7.2.0 The using SD is : s110_nrf51822_7.3.0_softdevice

There was one device (our product) runing into the hardfault state, and just only one device got the problem ... (more)

31
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no
votes
2
answers
Last activity 2017-08-14 09:53:46 +0200 by Joakim Jakobsen flag of Norway

ble as a scanning device

Dear Guys,

I wonder if there is any possibility to have my ble as a scanning device but for softdevice version s110, I'm asking because I found all the examples are with S120 and S130.

and of course if ... (more)

32
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no
votes
1
answer
Last activity 2017-08-11 07:45:30 +0200 by Nguyen Hoan Hoang flag of Canada

What is the differences between "ble_nus" and "ble_nus_c"

In "ble_nus_c" file we can get nus_data with "ble_nus_c_evt_handler" function. We can do the same with "nus_data_handler" in "ble_nus" file. So why are there two separate ble_nus files? Also on a device I have defined as peripheral (sdk8.0.0 ... (more)

34
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1
vote
1
answer
Last activity 2017-08-10 13:25:35 +0200 by Hung Bui

nRF51 pstorage during ble_radio_active_evt

I've been banging my head against this for a couple days now, and need some help. First the layout.

In our setup we have an accelerometer with a movement interrupt pin (high when movement detected) tied to a sense ... (more)

83
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5
votes
4
answers
Last activity 2017-08-10 10:13:40 +0200 by haakonsh

SDK and SoftDevice licenses

Hello,

Since this seems to be a very hard topic to find info about (its very contradictory and confuse) I'd like to ask a Nordic employee directly.

I'm planning to build a product that will use the NRF51822 ... (more)

48
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answers
Last activity 2017-08-09 03:32:21 +0200 by Milk

The device breakdown for several times,no matter what you do

Recently,I confronted some particular circumstance that I have never came across. The device programmed used by Jlink and Keil,so I check the address of flash,it showed as follows. image description Then I readed the code used by NRFgo Studio ... (more)

30
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no
votes
1
answer
Last activity 2017-08-04 14:04:38 +0200 by satheesh

Use of power register in nrf51822

hi,

please any one explain me, what is the use of power registers of module such as UART, SPI, ADC,GPIOTE etc..

1.NRF_GPIOTE->POWER 2.NRF_ADC->POWER 3.NRF_UART0->POWER etc..,

please tell me how to use this register ... (more)

61
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answers
Last activity 2017-08-02 17:19:55 +0200 by Pitius Tec S.L. flag of Spain

nRF51x, S110, pairing request with Initiator key LTK

Thats the problem. On Windows7, 64 bit, with the Bluetooth Stack from the USB BLE-Stick happens the following: Windows (master) initiates the connection, sends a security requierement of Bond=1, MITM=1, etc... I do´nt support MITM, so it ... (more)

43
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1
vote
2
answers
Last activity 2017-08-02 04:30:15 +0200 by jwcheon

nRF51822-QFAB(S110, SDK9.0) hid-mouse not execute.

Good morning. The sentence may not be smooth due to Google translation. please understand.

I tried to apply the hid-mouse example in SDK 9.0.0_2e23562 to nRF51822-QFAB.

The environment that is being used now Tool: Keil_v5, nRFgo Studio Soft ... (more)

24
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1
vote
1
answer
Last activity 2017-08-01 12:52:41 +0200 by Krzysztof Zaraska

Where is characteristic value data kept?

Hello,

Is the characteristic value data supplied to sd_ble_gatts_characteristic_add() and sd_ble_gatts_value_set() copied into the softdevice RAM, or does the softdevice refer to application RAM whenever client requests a characteristic read? I cannot find this information in the SDK docs.

Consider ... (more)

54
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no
votes
2
answers
Last activity 2017-08-01 02:10:48 +0200 by Minh

failed to upload ble_app_uart with dfu

Hi everybody.

I am making a firmware based on ble_app_uart example (PCA10028 NRF51422, Softdevice S110, NRF51 SDK9.0). In this firmware, I insert dfu part (follow by this instruction ) to support upload firmware via OTA(by nrfConnect android app). I ... (more)

41
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no
votes
1
answer
Last activity 2017-07-27 12:45:06 +0200 by Kristin flag of Norway

i could not reset the gpiote pin interrupt

i am using nrf51822 s110 sdk7.2.0

1.i had initialized and configure the gpiote interrupt before mainloop for (pin no 10). 2.i had wrote the process on interrupt handler. 3.got the external interrupt successfully. 4. clear ... (more)

60
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3
votes
1
answer
Last activity 2017-07-26 14:04:09 +0200 by RK flag of Singapore

Can I use nrf51 as a peripheral and nrf52 as a central device

Normally I am using nrf51 for peripheral(sdk 8.0.0 s110) and central(sdk10.0.0 s130) device. But I want to use nrf52 for just central device. I tried nrf52 for central(with sdk11.0.0 s132) device ... (more)

546
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2
votes
3
answers
Last activity 2017-07-22 00:51:03 +0200 by Ben

SPI Master MISO Noise Issue

I'm trying to connect to a ST LSM6DS3 via SPI on the Nordic chip. I have used SPI on Nordic with other peripherals but couldn't seem to get it to work with this ST chip. Eventually, after debugging ... (more)

76
views
1
vote
1
answer
Last activity 2017-07-20 19:39:25 +0200 by purgoufr

How to get rssi without connection via central device

I use nrf51822 sdk130 (central device) and nrf51822 sdk110(peripheral device). I want to get rssi value of the peripheral device using the central device without connection. Is it possible to read rssi value of peripheral device without connection?

53
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no
votes
1
answer
Last activity 2017-07-18 16:16:29 +0200 by Bjørn Spockeli flag of Norway

Changing SD (s110->s130) and wrong memory organization

Hello,

I'd like to upgrade nrf51822 QFAC custom board firmware via DFU and change SoftDevice from s110 to s130. Because of larger (than s110) size of s130 I haven't enough space for my application with current FLASH memory ... (more)

1k
views
2
votes
2
answers
Last activity 2017-07-18 15:54:58 +0200 by joao pimenta

nRF51822 - Connect without advertising

In short:

  • Is it possible to connect a nRF51822 s110 peripheral from a central without the need for sending advertising packets (by peripheral)?
  • If (hopefully) yes, what's the required steps (shure, the central must know the MAC)?

A stupid ... (more)

51
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no
votes
1
answer
Last activity 2017-07-18 10:23:54 +0200 by endnode

Wakeup and Sleep modes internal interrupt

Hello Guys,

I'm working in a project and I wanna turn off the radio "ble" and go to sleep, deep sleep to save the power, the current consumption while it's connected is 0.4mA which is too much ... (more)

49
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no
votes
1
answer
Last activity 2017-07-17 09:04:15 +0200 by maeva

timer timeout issues

I'm using an NRF51822 with soft device s110 version 7.1.0 and I'm having timer-related issues.

I create 1 periodic timer and 6 non-periodic (single shot) timers with app_timer_create. The periodic timer handler starts the other timers ... (more)

31
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no
votes
no
answers
Last activity 2017-07-14 14:11:00 +0200 by joy

how to add a passkey

im working on nrf51822 using sdk 9 ....i completed bonding using ble proximity example without privacy key.....now i wish to add privacy key ..what all changes i have to make in this proximity example to add a privacy key

36
views
no
votes
1
answer
Last activity 2017-07-14 11:16:21 +0200 by Sigurd flag of Norway

i want to perform only bonding using nrf51822

as im working on nrf51822 sdk 9.im finding difficulty in performing bonding..so could you please help us in providing the code which performs ONLY bonding and advertising...

73
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no
votes
1
answer
Last activity 2017-07-12 12:21:21 +0200 by joy

to generate random address

since im working on sdk9... advertising program(hello world).i wanted to generate a random address .but i couldnot complete it sucessfully.can you please help me in providing me the code for sdk9 to generate random address. thanking you ... (more)

54
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no
votes
1
answer
Last activity 2017-07-12 09:06:53 +0200 by endnode

how to add privacy features to ble nrf51822?

hello.. I'm actually working on nrf51822,i could complete the advertising part successfully("hello world")..NOW i want to add privacy feature which allows an advertiser to hide its public Bluetooth address by using temporary,randomly generated addresses that ... (more)

47
views
1
vote
1
answer
Last activity 2017-07-10 11:14:08 +0200 by frogofmagic

observer DFU problem

Hello, I'm using this code(observer): https://github.com/NordicSemiconducto... SDK9.0.0

I try to add DFU function, now can enter dfu mode and iPhone6 can see advertising and connect it. But the connection is very slow and ... (more)

34
views
no
votes
1
answer
Last activity 2017-07-10 07:49:10 +0200 by PabloGC

External pin interrupt

I'm implementing an I2C communication and I need to set an interruption every time the sensor sets the interrupt pin to 0. I've been checking some other posts from devzone and arrived at the conclusion that the code ... (more)

34
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no
votes
1
answer
Last activity 2017-07-06 13:22:05 +0200 by endnode

How can I control connection parameters

I use example ble_app_uart_pca10028_s130, I want to change the connection parameters by changing #define MIN_CONN_INTERVAL, #define MAX_CONN_INTERVAL, but when I use oscilloscope, I find it stick to a period of 50ms. Why?

1k
views
2
votes
2
answers
Last activity 2017-07-03 13:40:04 +0200 by chehab

Reading ADC values from multiple pins

Hello, I'm using nRF51822-mKIT for a research.

I recently posted a question related to "reading ADC value from analog input", having issues with reading proper ADC value from input pin. However, after narrowing down, I have found out that ... (more)

39
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no
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no
answers
Last activity 2017-07-03 01:13:06 +0200 by nar0909

nRF51822 QFAA s110 to s130 softdevice upgrade using B.M probe?

Hi Nordic and fellow developers, I have been working on upgrading the nRF51822 QFAA s110 and upgrading the softdevice to work as s130 for its (simultaneous Central/Peripheral/Broadcaster/Observer) advantages. The client wants the s130 for a project and ... (more)

62
views
no
votes
1
answer
Last activity 2017-07-02 13:51:23 +0200 by RK flag of Singapore

Which SDK example shall I use?

Hi, I am a newbie in nRF51 application. I am busy with a project which required the peripheral to communicate with the central once per second. Just to make sure that the peripheral is not lost. The project requires to ... (more)

76
views
no
votes
1
answer
Last activity 2017-06-30 11:58:20 +0200 by Kristin flag of Norway

Tutorial Characteristic Master example

Hi, I'm trying to notify the temperature value with Tutorial Characteristic Master example. But log shows me this rows when I try to read the Descriptor Client Characteristic Configuration:

  • Read Response received from descr. 00002902-0000-1000-8000-00805f9b34fb, value: (0x) 00-00

  • "Notifications ...

(more)

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  • Resolved questions: 10097
  • Unanswered questions: 3087
  • Total questions: 24462