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37
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1
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1
answer
Last activity 2017-03-23 16:03:52 +0100 by Jørgen Holmefjord flag of Norway

printf vs nrf_log vs app_uart_put

I see that nRF52 SDK support the printf(), nrf_log_info() and app_uart_put() that can display data received on PC serial monitor, I'm wondering what's different/advantage between them? If I have a large of data packets send over bluetooth ... (more)

46
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no
votes
2
answers
Last activity 2017-03-23 16:01:25 +0100 by Moussa Aw

BLE 4.2 reading Characteristic

Hello,

Recently I was using nRF Connect app to test BLE 4.2 Communication between my Android Device and nrf51422 board. updated the hardware device so the LE Secure Connections are established every time. when I try to connect to ... (more)

23
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1
vote
2
answers
Last activity 2017-03-23 15:55:54 +0100 by Sigurd flag of Norway

how to get total RF tx/rx counts/bytes?

I am doing power consume estimation, need to know detail of RF activities, is there any way to get the total send/recevie bytes of RF? or just simple tx/rx counts? My project uses nRF52832 and 12.2 SDK. thanks.

12
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no
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no
answers
Last activity 2017-03-23 15:38:06 +0100 by flo

NRF9E5 preamble

It would be helpful to know how a packet looks like when transmitted/received from the NRF9E5 chip. I already found the algorithm to build the correct CRC, expected from the NRF9E5 chip. But I'm still trying to build ... (more)

23
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no
votes
1
answer
Last activity 2017-03-23 15:30:00 +0100 by Sigurd flag of Norway

about Connection Parameter Update Procedure

I want to analyze the power consumption of connection parameter update procedure. How can i get a detailed description about the packet flow of it ? for example, the packet flow of connection establishment is showed in the pic belowed. Can ... (more)

20
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no
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answers
Last activity 2017-03-23 15:27:56 +0100 by Joshua

Adding Multiple Presentation Format Descriptors

The Bluetooth specification states:

If more than one Characteristic Presentation Format declarations exist, in a characteristic definition, then a Characteristic Aggregate Format declaration shall exist as part of the characteristic definition

However, there doesn't seem to be any way ... (more)

16
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no
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answers
Last activity 2017-03-23 15:27:40 +0100 by Jacob

Where is the peer manager data stored?

Hello, I can't find where in flash the peer manager data is stored. I'm currently working on DFU support and as part of that I want to define the memory area that should be preserved when doing updates ... (more)

16
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no
votes
no
answers
Last activity 2017-03-23 15:26:52 +0100 by robotox

How to wakeup with analogComparator on nRF24LE1

Hi,

i try without succes to go into MemoryRentention Timer On sleep mode, and wakeup with the analog comparator activated by AIN1 without sucess. Here is my code, please can you tell me what is wrong ?

Please can you show ... (more)

23
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1
vote
2
answers
Last activity 2017-03-23 15:24:49 +0100 by Maxim flag of Russian Federation

Deny connection on wrong application

Hi,

I'm working on a Custom Android app which connect to my NRF52 without any security.

This App is based on the UART demo App for Android, but I want that only my App will be able to connect ... (more)

35
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no
votes
1
answer
Last activity 2017-03-23 15:21:56 +0100 by Petter Myhre flag of Norway

How can I use ANT serialization(connectivity board and application board)

hello,I'm having a problem with the ANT application,I have two pieces of the PCA10040 board as a ANT connectivity board for a ANT application board.According to the instructions I use SDK13 in two applications.link text ... (more)

18
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no
votes
1
answer
Last activity 2017-03-23 15:12:27 +0100 by Hung Bui

Scan time out

Hi. I'm using nRF51822, SDK12.2.0, S130 as multi-link Central.

define SCAN_TIMEOUT 10

Time-out is working well when it is Single connection. After 10 second, it stops scanning.

When I use it as multi-link central, the operation is ... (more)

86
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4
votes
2
answers
Last activity 2017-03-23 15:00:51 +0100 by Jørn flag of Norway

nrf_gpio_pin_read() return always 0 with a GPIO as output

Hi all,

i need to read the status on my GPIO where there is a led.

I have configured it like a:

     nrf_drv_gpiote_out_config_t configLed = GPIOTE_CONFIG_OUT_SIMPLE(true);
      nrf_drv_gpiote_out_init(LED_2, &configLed);
      nrf_drv_gpiote_out_init(LED_1, &configLed);
      nrf_drv_gpiote_out_init(LED_3, &configLed);

but if i try to ... (more)

39
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no
votes
1
answer
Last activity 2017-03-23 14:33:14 +0100 by Petter Myhre flag of Norway

How to pairing with example ble_app_uart?

I see BLE_GAP_EVT_SEC_PARAMS_REQUEST generated from SD. How to call this request for pairing state? I can't find any peer manager in the project. Explane, pls.

26
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no
votes
1
answer
Last activity 2017-03-23 14:30:11 +0100 by Hung Bui

nrf52840 protect code from reading some ram

I have a nRF52840 application that needs to take a complex list of commands from a server.

I have a few options. I could:

  • code a basic language myself for these commands
  • accept some sort of script in (python?) which ...
(more)

37
views
1
vote
2
answers
Last activity 2017-03-23 14:21:47 +0100 by Adilson

nRF52840 with 2.4 GHz Wifi 802.11

Hi I´m interested in the nRF52840. Can I use a nRF52840 with 2.4 GHz Wifi 802.11 ..

31
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no
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no
answers
Last activity 2017-03-23 14:15:06 +0100 by Jacob

Using JLinkExe to flash nRF52

Hello, Our production systems run on Raspberry Pi, which is running on ARM. Currently the nRF5x command line tools are only available on x86, which means that we need to use JLinkExe directly.

We want to flash SoftDevice, bootloader and ... (more)

366
views
no
votes
3
answers
Last activity 2017-03-23 14:06:12 +0100 by Stein Helge Riise

GPS with nRF52 on i2c

Hi,

I am struggling with the Ublox EVA7M with nRF52 on i2c and wonder if anyone can share a sample code of connecting a GPS to the nRF52. I am unable to make the twi work. I am using the ... (more)

28
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no
votes
2
answers
Last activity 2017-03-23 13:59:09 +0100 by Moritz

Restarted Timer is not executed for long time(S132)

Hey,

SHORT VERSION: Timer (every Second) gets started when connecting (BLE with nRF Connect) to my DK (SDK12.2, Softdevice S132). Timer gets stopped when disconnecting. After reconnecting it takes more than 15Sec for the Timer to call the handler ... (more)

27
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1
vote
no
answers
Last activity 2017-03-23 13:56:17 +0100 by Bjarne Kvæstad

Unable to flash due to high reset pin

Hi

I'm currently working on the 10028 DK board, which was working flawlessly until I used the J-link RTT Viewer, and pushed the IF BOOT/RESET-button. Now, when I try to flash the MCU I get this in Keil ... (more)

34
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no
votes
no
answers
Last activity 2017-03-23 13:49:14 +0100 by sananth

Outputting a PWM signal at 8Mhz with 50% dutcy cycle

We are working with SDK 12.1 and are noticing the max value we can output using the PWM driver is about 5.3Mhz (top value to 3 and 16Mhz for the clock) this isn't a 50% duty cycle ... (more)

27
views
2
votes
2
answers
Last activity 2017-03-23 13:46:58 +0100 by Jørgen Holmefjord flag of Norway

Beginner's help request: About measuring resistance (using temperature sensor) (nRF51822-QFAA Rev3.)

Hello guys.

I'm newbie to embedded programming.

I'm trying to make device that can measure temperature of other objects. I have a variable resistor. The resistor's resistance varies by temperature. I have connected the resistor to a ... (more)

18
views
no
votes
1
answer
Last activity 2017-03-23 13:42:05 +0100 by Kristin flag of Norway

Protect NVM from being overwritten during reflash

I'm using the pstorage driver on the nRF51 to maintain several NVM variables. The NVM functions correctly and maintains state between power cycles. However, when I reflash the device using OTA reflash (application only, not SoftDevice), all of my ... (more)

67
views
no
votes
1
answer
Last activity 2017-03-23 13:41:07 +0100 by Hung Bui

Buttonless DFU custom entry

Hi,

I am using nRF52832 with NUS and buttonless DFU running well next to each other (SDK13). Instead of the standard way to jump to the bootloader (writing a 0x01 to the DFU characteristic) I would like to use a ... (more)

26
views
no
votes
1
answer
Last activity 2017-03-23 13:39:23 +0100 by Hung Bui

Is it possible two device types in dfu package

Hi all, I'm using sdk11.0.0 signed bootloader and I have custom board with dfu support. The custom board have device type ex:0x01 now I need to change device type to ex:0x02

I created a sd ... (more)

26
views
no
votes
1
answer
Last activity 2017-03-23 13:38:56 +0100 by Petter Myhre flag of Norway

Can I define the position of peer manager's data in flash?

My BLE application uses my own firmware update algorithm and bootloader, as well as the Peer Manager module. To ensure that I do not delete peer data during the update process, I need to know how the position of the ... (more)

26
views
no
votes
1
answer
Last activity 2017-03-23 13:29:45 +0100 by Kristin flag of Norway

ESB app_timer SWI3 multiply define error

The chip uses nRF 52832. MDK keil μVision V 5.22.0.0 is used as the development environment. The SDK version uses 13.0.0_04a 0 bfd.It is based on template_project.

https://1drv.ms/f/s!Avi3XPNJyYuthwXwO...

I ... (more)

22
views
no
votes
1
answer
Last activity 2017-03-23 13:21:41 +0100 by Petter Myhre flag of Norway

nrf51822 with BLE softdevice does not respond after long wait

I am using nrf51 running as a peripheral and an iphone app as central. It works OK when I first use the iphone app to connect to nrf51. Then I quit the iphone app and let the nrf51 run in ... (more)

18
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no
votes
no
answers
Last activity 2017-03-23 13:11:47 +0100 by sword

Multilink central S130

Hi,

I have NRF51822 module with custom carrier board. I trying the experimental ble app blinky (S130) with PCA10040 (master cenrtal board S132) works fine.

When trying NRF51822 module the master multilink central S130 not work.Scan led can't ... (more)

39
views
no
votes
1
answer
Last activity 2017-03-23 12:28:52 +0100 by Sigurd flag of Norway

Can we configure SPIM3 (Instance 3) at SCK more than 8MHz?

In datasheet it had been mentioned that in SPIM0,SPIM1,SPIM2 the SPI clock frequency should not exceed more that 8 Mhz. And SPIM3 nothing is mentioned. Can we understand that SPIM3 allows sck more that 8MHz. ?

36
views
1
vote
1
answer
Last activity 2017-03-23 12:23:24 +0100 by Hung Bui

Preserving application data with growing bootloader

Application data is stored just before the bootloader. If I do a DFU upgrade with a larger bootloader than the one currently flashed, is this taken care of? That is, is the application data copied to the area just before ... (more)

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