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23,035 questions

3
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Last activity 2017-06-22 17:45:31 +0200 by Vulpiculus

Missing closing brace in SDK13.0.0

Hello,

While porting a C++ application to SDK13.0.0, I ran into weird compiler errors, such as

error: #800: this declaration may not have extern "C" linkage

Found out nrf_ble_ancs_c.h was missing the extern "C" closing brace at ... (more)

no
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no
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Last activity 2017-06-22 17:18:46 +0200 by aras flag of Canada

Clarify is_conn_params_ok() function

While investigating connection parameter handling, I noticed the following:

The is_conn_params_ok(ble_gap_conn_params_t * p_conn_params) function in ble_comm_params.c only compares the interval, not the slave latency or connection supervisory timeout. This has the effect of the peripheral accepting connection parameters with ... (more)

5
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no
votes
1
answer
Last activity 2017-06-22 16:42:35 +0200 by Jørgen Holmefjord flag of Norway

How to config SAADC?

Hi.

I am using saadc example code or SDK V13 with the following requirements:

Voltage input up to 70mV,

Resolution: 50uV

So I did some modification to support the requirement:

Gain: 4,

Reference: internal,

Resolution: 14 bit.

But I have ... (more)

11
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1
vote
1
answer
Last activity 2017-06-22 16:36:37 +0200 by Sigurd flag of Norway

Enabling DC/DC mode on the NRF BEACON

Hi Nordic,

I am trying to enable the DC/DC converter on a PCA20006 rev 1.3.0. I am using the softDevice S130.

1. Using the sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE) function.

I tried to activate the DC/DC converter using the ... (more)

40
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answers
Last activity 2017-06-22 16:28:54 +0200 by shailav619

Combining ble_app_gls and bootloader_secure project. [closed]

Hello, I want to combine ble_app_gls and bootloader_secure project. Can you suggest me how to add dfu functionality to ble_app_gls project? Thanks, Shailav

image- publickey.PNG

46
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no
votes
1
answer
Last activity 2017-06-22 16:09:57 +0200 by Superkurt

Slow DFU speed

Hello,

yesterday I got a Thingy:52 device at an event held in Frankfurt/Germany. At home I've tested the DFU for the latest firmware and observed that the image was transfered at a very low speed. The image ... (more)

25
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1
vote
1
answer
Last activity 2017-06-22 16:06:29 +0200 by Jørgen Holmefjord flag of Norway

I want to use the nRF51-DK to communicate with my iPhone over bluetooth and be able to print results from an ADC channel on my phone so that I can monitor it.

How do I achieve this and is there an example in the SDK similar to this?

8
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answers
Last activity 2017-06-22 16:00:13 +0200 by Adam Heinrich flag of Czech Republic

S130 central disconnected immediately after connection to iOS peripheral

Dear developers, I am developing a scheme where the nRF51 (central role) connects to iOS device (peripheral roles). The nRF51 connects, performs the discovery procedure and interacts with desired characteristics.

However, this only works for some iOS peers (some phones ... (more)

4
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answers
Last activity 2017-06-22 15:37:34 +0200 by gotthcha

I2C Big Buffer Send from Flash without delay

Hello i m searching for a method to send a big buffer with TWI to a slave. The Buffer is read from flash. because its a soundfile its needed to send the buffer without delay with a fixed time between ... (more)

22
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1
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answers
Last activity 2017-06-22 15:30:54 +0200 by Stigui

s132 softdevice + example code not working

Hi, I’m having some troubles with example code : ble_app_uart_s132_pca10040. The code compile well in Keil and I can prog it in the nfr52 but it doesn’t run. When I check the code step by step in debug session ... (more)

34
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1
answer
Last activity 2017-06-22 15:02:56 +0200 by endnode

nRF52810 transmission distance

How to achieve the transmission distance of 100m with nRF52810 ?

44
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answers
Last activity 2017-06-22 14:53:46 +0200 by Pavan kumar

What should be the maximum size of a variable that we can use

Hi all, In my project I have a structure its length was about 2KB, I'm saving it as a static variable after using this I come across with a weird behavior from the board, Some times its hang up ... (more)

26
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no
votes
1
answer
Last activity 2017-06-22 14:45:51 +0200 by Frederik

state-machine RTC synchronization with softdevice

Hi,

I’m working on a device that requires to enable the softdevice when connecting with a smartphone via Bluetooth and disable it when acquiring data from an analog source.

In order to do this I have created a simple ... (more)

4
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answers
Last activity 2017-06-22 14:22:03 +0200 by Prasanth

nRF52840 HCI mode

Hi

Is it possible to use the nRF52840 in HCI mode ?

-- Prasanth

27
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answers
Last activity 2017-06-22 13:27:39 +0200 by Jørn flag of Norway

In the MPU6050 module, when the ACC, GYRO data update, INT pin can not produce interrupt signal

NRF52832 S132 MPU6050 TWI

I want to finish the function:

  1. When the ACC, GYRO data update, the INT pin to generate an interrupt, and then in the P026 pin configuration falling edge trigger GPIOTE interrupt,and then read the ACC ...
(more)

42
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2
votes
2
answers
Last activity 2017-06-22 13:24:53 +0200 by Jørn flag of Norway

How use usb data line without usb core

Hi, Nordic! We have connected gpio pins to usb data line pins for using usb or i2c in different times. But even if USB core disconnected, usb lines hinder for i2c lines. Is it possible connect usb d+ and d- to GPIO?

usb i2c connection

24
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no
votes
1
answer
Last activity 2017-06-22 13:03:20 +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)

34
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votes
1
answer
Last activity 2017-06-22 12:55:29 +0200 by Kristin flag of Norway

nRF environment coding suggestions

Dear all,

I am facing small problems, which I guess most of you faced at some moment.

I am trying to switch from working with ST microcontrollers to working with nRF52. Both of them are pretty similar, so that's ... (more)

16
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answers
Last activity 2017-06-22 12:41:10 +0200 by bryanhsieh

NFR52832 SPI Long Transfer Problem

To All,

From reading the datasheet I understand that nfr52832 spi can only send/receive up to 255 bytes at once. And to work around this a list method is used. Because I am writing/reading to a NAND flash ... (more)

39
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1
vote
1
answer
Last activity 2017-06-22 12:31:58 +0200 by Jørn flag of Norway

nRF52840 ram_retention demo

Hello!

I'm trying to use the ram_retention in sdk 15 alpha to retain RAM in system off mode and do some power profiling.

The default code seems to retain 8 kB of RAM. copy and pasting the appended section ... (more)

7
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answers
Last activity 2017-06-22 12:25:13 +0200 by Alice

fs_erase couldn't erase flash on S140

Hi,

I'm using nRF5_SDK_13.0.0_04a0bfd on nRF52840.Basing on the ble_app_multilink_central example, I want to write some data to flash to save. So I use the fstorage. After calling the fs_init function, I erase the page which I ... (more)

19
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no
votes
1
answer
Last activity 2017-06-22 12:18:32 +0200 by Jørgen Holmefjord flag of Norway

Can nRF52 SDK TWI master write a series of registers

I want to save precious CPU cycles by writing 40 i2c (TWI) registers in one shot. Can I somehow set up the TWI master to write 40 registers (each 16-byte address with 8-bit data)?

Further, can this be done for ... (more)

19
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no
votes
1
answer
Last activity 2017-06-22 12:11:42 +0200 by endnode

The maximum length of pdu for a ble beacon.

What is the maximum length of pdu for ble advertisement? I have ported the example application of solar powered beacon without softdevice. I just wanted to know if it was possible to have payload length greater than 37 and if ... (more)

17
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answers
Last activity 2017-06-22 11:30:58 +0200 by saintnever

Is it possible to set hopIncrement for nrf52832

Hi,

I'm wondering if it's possible to set hopIncrement to a specific value (not random), like 5, in current SoftDeivce. Also, if that's possible, can I set it to a value less than 5 despite the Core4 ... (more)

33
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no
votes
2
answers
Last activity 2017-06-22 11:25:24 +0200 by Leila

How to active DEBUG feature for SDK13, nRF52840 on IAR?

Hi.

I am using saadc sample cod of SDK13. Changing some parameters based on the analog input, the example is sucking somewhere where I have not been able to find it.

Searching for a solution, I wanted to use DEBUG ... (more)

19
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1
vote
1
answer
Last activity 2017-06-22 11:14:58 +0200 by Jørgen Holmefjord flag of Norway

Is it possible to use pstorage after initializing it with the SD disabled? [closed]

For what I understand of the doc and this question it is possible to turn off the SD, turn it on later and then use the settings as normal.

Is it possible to turn on the SD, initialize pstorage, turn ... (more)

19
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no
votes
1
answer
Last activity 2017-06-22 11:07:45 +0200 by Hung Bui

I have problem with SDK13 wdt when central mode

SDK 13 nRF52, S132, central mode

code init:

void wdt_init (void) //Configure WDT.

{ uint32_t err_code; nrf_drv_wdt_config_t config = NRF_DRV_WDT_DEAFULT_CONFIG; err_code = nrf_drv_wdt_init(&config, wdt_event_handler); APP_ERROR_CHECK(err_code); err_code = nrf_drv_wdt_channel_alloc(&m_channel_id); APP_ERROR_CHECK(err_code); nrf_drv_wdt_enable(); }

when I made infinit loop:

while(1)
{
        uint32_t err_code = sd_app_evt_wait ...
(more)

26
views
no
votes
2
answers
Last activity 2017-06-22 10:55:32 +0200 by omar

twi, mpu650 + hmc5883l

HI, i m beginner in TWI with nrf52832. i want to write a bit in a registre of hmc5883l but i didnt succeed. what i want to do is :

writeByte(devAddr, regAddr, b) ==> ( 0x1E,0x37,1)

tgis my own code ... (more)

44
views
no
votes
1
answer
Last activity 2017-06-22 10:53:12 +0200 by Sigurd flag of Norway

Where is the license file for Android nRF Connect

I don't speak English well

I can't found LICENSE file on the repository.

I guess its license is same as under this repository. https://github.com/NordicSemiconducto...

Is it right? If I overlooked LICENSE file, Please tell me the link

32
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no
votes
1
answer
Last activity 2017-06-22 10:39:20 +0200 by endnode

nRF52 DK (pca10040) not seen by nrfjprog after IF update

After spending half a day on this solution, I found out it wasn't really a solution - it devolved back to the same issue after trying to connect - please advise!

Description of System: nRF52 DK Windows 10 pro PC

Description ... (more)

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