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Last activity 2017-08-16 20:25:40 +0200 by Thomas Stenersen flag of Norway

Mesh SDK 0.9.1 on PCA10028 - Light Control Demo - Hard Fault

Post in reference to link

After flashing light control server or client app on PCA10028 app crashes with HARD FAULT.

Steps how I built the app:

Using freshly downloaded MESH SDK 0.9.1.

ble_mesh_v0.9.1-Alpha>mkdir build
ble_mesh_v0 ...
(more)

19
views
2
votes
1
answer
Last activity 2017-08-14 10:17:03 +0200 by endnode

where can i find nRF51422-QFAA-T PDF DATASHEET

  1. i doing the pcb tiring to find the package size .

  2. also if there is any application note to the pcb Antena

thanks adi

101
views
no
votes
2
answers
Last activity 2017-08-11 12:29:59 +0200 by Jørn flag of Norway

PCB antenna design problem: too short range?

Dear Nordic,

Some time ago we started a project in which we decided to use ANT protocol to communicate wirelessly. However, now that we are going to production in a very very short time, we have spotted a very critical ... (more)

40
views
1
vote
2
answers
Last activity 2017-08-08 19:28:48 +0200 by Nguyen Hoan Hoang flag of Canada

Error while flashing nrf51422

Hello,

I want to falsh nrf51422 device. I ma developing software using Eclipse and SDK_7.2.0. The soft device is 130. I have build the project successfully and Hex/elf file is generated.

But when i tried to flash ... (more)

110
views
no
votes
1
answer
Last activity 2017-08-08 13:55:27 +0200 by khosla

Sniffer not functioning.

ppi.zipHi, I am using radio with ppi to advertize packets as shown in the mainc file attached. Even after allocating the access address of Bluetooth on line 196 as set_address0(0x8E89BED6); and advertizing channel selected as 37 as ... (more)

37
views
1
vote
1
answer
Last activity 2017-08-08 11:10:40 +0200 by Torbjørn Øvrebekk

LSM9DS1 libraries for nRF51

Hi, I have some code written for Arduino that read values in SPI from a LSM9DS1 (9-axis IMU) and I need to make it work on a nRF51.

What I have troubles with is the library to use with the ... (more)

61
views
no
votes
1
answer
Last activity 2017-08-02 09:10:10 +0200 by shadowsky

UART lock up

Hi,

I'm having some trouble using the UART protocol (4800 8N1) communicating with a GPS device.

It happen that the nRF51 device is not getting an interrupt (nothing at all, even not an error) when a NMEA character have ... (more)

46
views
1
vote
1
answer
Last activity 2017-07-31 17:17:59 +0200 by Hung Bui

enable whitelist in advertising SoftDevice S130

Hello, I got problem in enabling whitelist on starting advertising.

My working enviroment is PCA10028 V1.1.0 2015'18, SoftDevice S130 2.0.1, SDK 12.2.0 MCP works on Android 6.0.1, Nexus 7(2013).

I ... (more)

83
views
no
votes
4
answers
Last activity 2017-07-27 04:55:40 +0200 by RK flag of Singapore

What happens if handlers are called at the same time? (nrf51422)

Hi,

I am new to firmware engineering. I have a simple and basic question.

If there's Timer A and B, and both interval is 100ms, what happens to the timeout handler functions? If both timers start at the same ... (more)

39
views
no
votes
no
answers
Last activity 2017-07-26 15:11:16 +0200 by ankitjain96

DAP error while reading AHB-AP Rom Reg. Unable to connect to target.

I am using jlink to program the custom board. I was able to program the board earlier, but now this error is comming. I have rechecked the connection and it is fine. The custom board is powered by the 12V ... (more)

1k
views
4
votes
2
answers
Last activity 2017-07-26 09:22:47 +0200 by Kristin flag of Norway

BLE Software configuration for FCC Spurious Emissions Test

I have a dual mode BLE / ANT+ nRF51422 design going through regulatory testing for FCC / EU marketing approval. I have previously successfully tested a very similar design with Ant+.

One of the tests that I am required to do is ... (more)

60
views
no
votes
no
answers
Last activity 2017-07-24 21:16:37 +0200 by badvassal

UART tx stops due to flow control; requires power cycle

tl;dr: UART transmission sometimes stops and never resumes. Only a power cycle resolves the issue; a system reset is not sufficient. The problem only occurs when flow control is used.

Hardware: nRF51dk 51422, PCA10025, V1.2.0, 2015.51 ... (more)

91
views
no
votes
2
answers
Last activity 2017-07-24 16:22:37 +0200 by Iliyan Iliev flag of Bulgaria

HID Mouse Example - Can't Pair with Windows 10

I want to run the HID Mouse and Keyboard examples on nRF51 Dongle. How I can configure it first, to connect with my PC via Bluetooth and second, to configure the GPIOs act like buttons, since the dongle doesn't ... (more)

27
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no
votes
no
answers
Last activity 2017-07-22 12:48:29 +0200 by Khan

Different master instances for two slaves in nrf51422

Hi All,

I am using nrf51422, SDK 12.0.0, an SPI OLED display 128x32, and an SD card.

I want to interface an OLED display and an SD card onto the nrf51422. Although my SD card and the OLED ... (more)

82
views
2
votes
2
answers
Last activity 2017-07-22 10:59:35 +0200 by endnode

APP_ERROR_CHECK(nrf_drv_spi_transfer(&spi, m_tx_buf, m_length, m_rx_buf, m_length));

Hi All,

I am a beginner,Can you please explain me what is the role of this line?

APP_ERROR_CHECK(nrf_drv_spi_transfer(&spi, m_tx_buf, m_length, m_rx_buf, m_length));

31
views
2
votes
1
answer
Last activity 2017-07-20 15:43:15 +0200 by Adrian Lita

nRF51422 radio issues

Dear Nordic,

I have built a board using nRF51422, and I've just manage to populate it and start it up. I'm using a modified example (peripheral_lbs), and everything seems to work ok (leds and buttons), but the radio ... (more)

100
views
1
vote
3
answers
Last activity 2017-07-13 13:04:31 +0200 by Jørgen Holmefjord flag of Norway

a Nrf52 function mapping to nrf51

Hi all,

I am working on interfacing an SD card as well as an OLED Display with my nrf51422 on SDK 12.2.0.

Although, both are on SPI and hence i need to configure them as multiple slaves using ... (more)

59
views
1
vote
1
answer
Last activity 2017-07-12 13:54:48 +0200 by Sigurd flag of Norway

nRF51422 GPIOTE with pushbutton

Hi,

I am building a custom PCB using the nRF51422 chip. I need to include a pushbutton switch on the PCB to generate an interrupt when it is pressed(gpiote). I am connecting the pushbutton switch to an analogue pin ... (more)

37
views
no
votes
1
answer
Last activity 2017-07-07 12:30:46 +0200 by Khan

Nothing is building and flashing on dev kit.

Hi All,

I've got a nRF51-DK development kit, and I just compiled and downloaded my first example to it through Keil uVision. Problem is that nothing happens when the program should be running. And with good reason, because if ... (more)

35
views
3
votes
1
answer
Last activity 2017-07-04 14:05:18 +0200 by Sigurd flag of Norway

nRF51422 oscillator

Hi,

I have been using the nRF51-DK to develop a program for capacitive sensing. I want to design a custom PCB with the nRF51422 chip on it. Do I need to have an oscillator/crystal on my PCB to provide ... (more)

65
views
no
votes
1
answer
Last activity 2017-06-29 13:33:05 +0200 by khosla

Using RTT viewer in SDK 12.2 SES

sdkconfig.txtmainc.txt(/attachment/6fb97103178e9eb2c30302351e63ce8f)Can you please tell whether i follow the the entire tutorial as in the link or just the first step for SDK 12.2 SES. Even if i use the first step, i need ... (more)

24
views
no
votes
no
answers
Last activity 2017-06-29 12:08:41 +0200 by khosla

Sniffer not showing up my device.

Hi, I am using radio with ppi to advertize packets as shown in the mainc file attached.mainc.txt Even after allocating the access address of Bluetooth on line 196 as set_address0(0x8E89BED6); and advertizing channel selected as 37 as ... (more)

47
views
1
vote
1
answer
Last activity 2017-06-28 14:50:31 +0200 by Joakim Jakobsen flag of Norway

Unable to control GPIO pins in nRF51422

Hello, i am a beginner, i want to configure an LED to be connected on one of the GPIO pins, please help me with the code.

54
views
no
votes
no
answers
Last activity 2017-06-28 13:26:38 +0200 by Khan

map pins from nRF51422 to OLED spi

I am unable to map and code nRF51422 for my 128x32 spi OLED display. Please help.

70
views
1
vote
2
answers
Last activity 2017-06-26 15:29:36 +0200 by emdi

Fstorage Queue Runs Full when Bluetooth Connected

I'm trying to store some values with fstorage. The store operations seem to be queued successfully, but never executed. I currently have this to test the behavior:

FS_REGISTER_CFG(fs_config_t fs_config) =
{
    .callback  = fs_evt_handler, // Function for event callbacks.
    .num_pages = 1,      // Number ...
(more)

33
views
no
votes
1
answer
Last activity 2017-06-18 23:20:26 +0200 by endnode

Can't I connect to device that hasn't been discovered yet?? (but with Address)

Can't I connect to device that hasn't been discovered yet??

I'm trying to connect one device(A) to another device(B) which ADDRESS is known but never discovered yet.

The reason why it isn't discovered is ... (more)

31
views
no
votes
no
answers
Last activity 2017-06-18 01:36:21 +0200 by Daniel T. Lee flag of Korea, Republic of

GPIOTE Library makes my Board Brick?? (J-Link is not Found)

GPIOTE Library makes my Board(nRF51422-QFAC) Brick??

I just build my nRF51422 Board, and It's pretty working well before I've used GPIOTE Library.

Before using GPIOTE Library, I've used GPIOTE Driver, And It works pretty well. (But ... (more)

60
views
no
votes
1
answer
Last activity 2017-06-16 13:31:04 +0200 by Torbjørn Øvrebekk

How to enable radio interrupts using SDK?

mainc.txt

we can use INTENSET to enable certain events on the radio as in line 460 in mainc file attached. But how to enable this on the radio as a whole. I basically need a couple of events like ... (more)

31
views
no
votes
1
answer
Last activity 2017-06-15 21:15:53 +0200 by Jørgen Holmefjord flag of Norway

Can nRF51 be BLE connected while it's on sleep mode? (connected by other device as Peripheral mode)

Can nRF51 be BLE connected while it's on sleep mode? (connected by other device as Peripheral mode)

I thought, to be connected as peripheral mode, It must be advertising itself to be connected, because after a little bit of ... (more)

50
views
1
vote
1
answer
Last activity 2017-06-15 15:03:15 +0200 by Jørgen Holmefjord flag of Norway

What is 3UL compare time in RTC???

In example of peripheral RTC,

It compares time of 3UL.

BUT I've never heard about any measurement of UL... How can i transform it to second???

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