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Last activity 2017-11-18 16:49:34 +0200 by fab

DFU bootloader prevents to load app hex

Hi all,

I am on the DK-52 with the SDK 13.0.0.

After erasing the device, I follow this steps:

1) upload the softdevice

nrfjprog --reset --program s132_nrf52_4.0.2_softdevice.hex --family NRF52

2) upload the bootloader (bootloader_secure_ble)

nrfjprog ...
(more)

18
views
1
vote
1
answer
Last activity 2017-11-17 14:54:19 +0200 by Sigurd flag of Norway

Problems with TWI and NRF_LOG_DEFAULT_BACKENDS_INIT() at the same time

Hi

I discovered I strange behaviour using twi. I am using sdk-14.2.0, and Segger Studio. I started with the twi_scanner projected that I found in examples/peripherals. I have shortened it to demonstrate the problem I discovered.

The ... (more)

14
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no
votes
no
answers
Last activity 2017-11-17 03:32:12 +0200 by goldwake

PM_EVT_STORAGE_FULL event spammed

I am currently doing some stress testing to ensure that I am correctly removing peers when the peer manager storage is full.

In this regard, my device is acting as a peripheral, being connected to by Android 7 phones. I ... (more)

15
views
1
vote
no
answers
Last activity 2017-11-16 20:24:30 +0200 by DuyLionTran

pb remote client doesn't work

Hello,

I used 3 nRF52-DKs to run the pb_remote and it ran well with the Mesh SDK v0.10.1. Then I created my own project and copied the code from the pb_remote client and server and put in my ... (more)

74
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1
vote
2
answers
Last activity 2017-11-16 14:38:26 +0200 by Petter Myhre flag of Norway

How large is the size peer manager uses?

I'm trying to determine DFU_APP_DATA_RESERVED and FDS_VIRTUAL_PAGES. According to this Q&A, DFU_APP_DATA_RESERVED must be the same FDS_VIRTUAL_PAGES, if FDS_VIRTUAL_PAGE_SIZE is 1024.

My application uses 11 pages, so 11+the size peer manager uses must be FDS_VIRTUAL_PAGES( and DFU_APP_DATA_RESERVED ... (more)

100
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5
votes
4
answers
Last activity 2017-11-16 11:27:27 +0200 by chaitz

nRF52 software development tools for OSX

What are the most recent set of software tools that are known to work on OSX Sierra? Any pointers to a good IDE for debugging will be great. I understand there are many questions on the forum related to this ... (more)

34
views
2
votes
1
answer
Last activity 2017-11-16 10:17:43 +0200 by Håkon Alseth

JLinkARM DLL load failed on Ubuntu

I got following error:

nrfjprog --version
ERROR: JLinkARM DLL load failed. Try again. If it keeps failing, please
ERROR: reinstall latest JLinkARM from Segger webpage.

JLink installed in /opt/SEGGER/JLink/ and version of JLink is 6.12a. I've ... (more)

56
views
1
vote
1
answer
Last activity 2017-11-15 22:11:10 +0200 by rms

Multiple SAADC channels with Multiple BLE Characteristics

I have 2 Channels with SAADC taking samples. They are configured to respond to BLE characteristics that have read and notify properties, each channel has its own characteristic it responds to.

For BLE characteristic notifications I setup a double buffer ... (more)

24
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no
votes
1
answer
Last activity 2017-11-15 19:49:57 +0200 by AmbystomaLabs

Retain Some Peripherals status after a watchdog reset over nRF52

I write an application on nRF52 where the Watchdog Timeout event should automatically clear a GPIO and start a PWM signal on another GPIO using PPI.

The issue is that Watchdog timer will always reset the chip and hence reset ... (more)

88
views
no
votes
1
answer
Last activity 2017-11-14 15:06:52 +0200 by Sudhir

Sparkfun nRF52832

How to run the sdk examples from usb on the Sparkfun. I can run the adruino code, but want to shift to a more standard production environment. After manual install of GCC I can compile by "make" and when I ... (more)

30
views
3
votes
1
answer
Last activity 2017-11-14 05:50:50 +0200 by RK flag of Singapore

What does it means pca10040.hex pca10040_s132.hex

Hello! I'm new with Nordic SoC. I've bought nRF52 DK and would like to run precompiled example in accordance with instruction

There is 3 hex files in the examples\peripheral\blinky\hex I've loaded blinky_pca10040.hex and ... (more)

49
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no
votes
1
answer
Last activity 2017-11-13 13:25:07 +0200 by Bjørn Kvaale

Is it possible to port libraries designed for arduino to program nRF52 DK with Keil?

I am using various sensors to build a wireless sensor network. There are libraries for sensors that are provided by developers such as from adafruit or sparkfun. I have been using them in arduino with adafruit's nRF52 Bluefruit to ... (more)

121
views
1
vote
2
answers
Last activity 2017-11-13 11:47:35 +0200 by nahro

Current measurements on nrf52840 pdk with PPK

ble_app_gls_pca10056_s140.hex

Hi, I am new in this field and i am trying to do current measurement on the nrf52840 PDK using PPK, in sleep mode(sd_power_system_off) i get average 40 micro amp which suppose to be 0,6! while ... (more)

29
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no
votes
no
answers
Last activity 2017-11-12 11:42:59 +0200 by Constantin

TWI easy DMA with uneven RX buffer width

Hi,

I just tried the example from

https://github.com/Martinsbl/nrf5-mpu...

And they are working like a charm. Now I want to change the example to a version where I can read 4 times the gyro via DMA and ... (more)

23
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no
votes
no
answers
Last activity 2017-11-10 17:48:40 +0200 by briz

MBR set GPIO pin

I'm using the SD (nrf52) MBR to update our custom bootloader, in a battery powered device.We have some custom hardware which is used to disable our LDO, to enter a "Ultra Low Power" Shipping Mode, this is controlled ... (more)

34
views
no
votes
no
answers
Last activity 2017-11-10 03:56:35 +0200 by Stas

Arduino libraries

What is the easiest way to use Arduino libraries into nrf52 projects in Keil on C? Arduino has a lot minus : bad ide, not support debug mode, not optimize code size. But it has one huge plus, you can use ... (more)

24
views
no
votes
no
answers
Last activity 2017-11-09 16:35:05 +0200 by Chris

SEGGER_RTT_CONFIG_DEFAULT_MODE blocking app

If SEGGER_RTT_CONFIG_DEFAULT_MODE is "BLOCK", the program won't start without RTT attached - at least for me... is there a possible solution? I mean, technically it makes sense, because the buffer is never flushed without RTT Logger attached, but as we ... (more)

63
views
1
vote
1
answer
Last activity 2017-11-09 15:44:37 +0200 by Jakub Rzeszutko

Read UART input while using Logger Module

I examine the Logger Module implementation a little and find out that the only way to get a character from UART is via the NRF_LOG_GETCHAR() macro, which is blocking.

I would like to receive bytes asynchronously and process them, both ... (more)

64
views
no
votes
1
answer
Last activity 2017-11-09 15:15:47 +0200 by Dom O

Dead-ish nRF52-DK anything else I can try?

One of my nRF52-DK started to act oddly - very brief message in red type flashed up by nRFgoStudio on programming a few times - unfortunately too fast for me to read.

Now Windows 10 cannot connect to that nRF52-DK at all ... (more)

265
views
1
vote
1
answer
Last activity 2017-11-09 14:28:56 +0200 by Petter Myhre flag of Norway

FDS Documentation?

Is there anywhere I can find some high level documentation on the FDS module? I'm going thru the API documentation but it provides very little insight into how to best setup an FDS. For example: -How to best organize ... (more)

31
views
no
votes
no
answers
Last activity 2017-11-09 13:49:59 +0100 by Mike D

Nordic support for WebUSB [closed]

Hi All,

Are there any plans for Nordic processors to support WebUSB ?

link text

54
views
no
votes
1
answer
Last activity 2017-11-08 12:48:06 +0200 by Sigurd flag of Norway

How to use BLE of nRF52840-PDK and RIOT OS?

Hello,

I am currently working on nRF52840PDK baesd project, where I want to use BLE using RIOT OS. So, please can you provide any example for RIOT OS based BLE or any details/procedure?

Or how I can use softdevice ... (more)

37
views
no
votes
no
answers
Last activity 2017-11-07 18:10:30 +0200 by Mik

How to debug NFC APDUs

Hi, we have implemented the experimental_writeable_ndef_msg example from SDK12.2 with Nordic NRF52 on a custom board. Reading the NDEF Message works fine with smartphones (Android and IOS11 with Iphone 7). We have used NFC in previous Projects together with ... (more)

25
views
no
votes
no
answers
Last activity 2017-11-07 02:54:42 +0200 by Haruki Kawakami

secure bootloader doesn't proceed once it get "Write request too long" error.

Hi,

I'm checking whether SDK 13.0.0 secure bootloader dfu can proceed correctly with iOS DFU library if the process is interrupted because smartphone application is restarted, or ble connection is lost, and so on.

I have tried ... (more)

42
views
no
votes
no
answers
Last activity 2017-11-06 10:38:18 +0200 by Stas

esp32 + nrf52832

Can I consider esp32 (chip with BLE+WIFI) as bluetooth supported wifi router for connect nrf52 to the internet (as we do it with raspberry pi)?

57
views
no
votes
2
answers
Last activity 2017-11-06 09:34:57 +0200 by emdi

FDS - How can I write binary data to flash while receiving via BLE

Hi community,

for our application (nrf52832 / SDK 12.2) we need to store data received via BLE. The received data is a 25 kB binary blob which by design will be chopped in 20 B chunks to be sent and ... (more)

61
views
1
vote
1
answer
Last activity 2017-11-03 17:22:33 +0100 by Jørn flag of Norway

Recommend DC-DC inductor component selection for custom nRF52832 Board PCB design?

Hello sir,

I have completed PCB design of custom nRF52832 board. Can i use following component instead of recommended part No in reference design. I have also mentioned mft part no that will be use. Because this recommended part number ... (more)

139
views
3
votes
1
answer
Last activity 2017-11-03 16:18:42 +0200 by Bjørn Kvaale

How to calculate battery voltage into percentage for AA 2 batteries without fluctuations?

Hello,

I am using 10 bit ADC read VDD voltage convert into mv without using any external voltage divider circuit, as per following function:

static void adc_configure_battery(void) { ret_code_t err_code = nrf_drv_saadc_init(NULL, saadc_event_handler); APP_ERROR_CHECK(err_code);

nrf_saadc_channel_config_t config =
    NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE(NRF_SAADC_INPUT_VDD);
err_code ...
(more)

38
views
no
votes
2
answers
Last activity 2017-11-03 14:45:53 +0200 by Hung Bui

What are the requirements for going from an active BLE connection to sending a carrier wave?

Hi

I have seemingly successfully created a firmware that sends a continuous carrier wave using radio_test.c from nRF5_SDK_12.1.0_0d23e2a/examples/peripheral/radio_test/

And it seems to work great as long as I don't start the BLE stack ... (more)

64
views
2
votes
1
answer
Last activity 2017-11-03 14:09:40 +0100 by Jørgen Holmefjord flag of Norway

[PCA10056] How Can I See data was received in ATT_MTU_Thought_Put

I was bought 2 PCA10056 board to do my product. I use ATT_MTU_Thought_Put example in SDK version 13. I also read this tutorial https://infocenter.nordicsemi.com/ind.... And I have some question : 1 - How can I get data was ... (more)

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