RSS
Sort by » date activity ▼ answers views votes

23,725 questions

117
views
3
votes
1
answer
Last activity 2014-08-21 17:15:44 +0200 by Nikita

Can activity on antenna bring nRF51 out of sleep? [closed]

I'm using an nRF51822. Currently, I'm using the low power sleep mode. The device uses about 1.5 uA in sleep, which is great. The firmware wakes up the device every n minutes, advertises, and goes back to ... (more)

1k
views
3
votes
2
answers
Last activity 2014-08-21 13:24:52 +0200 by Pål Håland

I know I can send a packet with data length 1~20 using sd_ble_gatts_hvx(), then how to send an empty notification packet(data length 0)? [closed]

Hi, I am using nrf51822 (128k). Softdevice 6.0 (s110), SDK 5.2. How can I send an empty notification packet (data length 0) to master device? If I send a packet with data length 0, nrf51822 reset...

Thank you.

356
views
no
votes
1
answer
Last activity 2014-08-21 13:01:40 +0200 by Stefan Birnir Sverrisson flag of Iceland

Request of nRF51822 SmatPhone APP & Sensor data tarnsfer Example Source [closed]

For nRF5122 BLEStack, it is analyzed that the event is processed in each of the interrupt handler for the interrupt terminal BLE I understand that is processed through the Gatt API to read sensor data when you use the app ... (more)

1k
views
no
votes
1
answer
Last activity 2014-08-21 12:19:52 +0200 by Anonymous

nRF51822 iBeacon application [closed]

Dear Sir/Madam,

I am testing iBeacon application on the nRF51822 mounted on nRF6310 motherboard. I programmed the ble_app_beacon application in the keil_v5\ARM\Device\Nordic\nrf51822\Board\nrf6310\s110 and Keil_v5\ARM\Device\Nordic\nrf51822\Board\nrf6310\s110\experimental ... (more)

177
views
no
votes
2
answers
Last activity 2014-08-21 11:39:38 +0200 by Nikita

Question about BLE stack [closed]

Hello,

I get a sample code in the dir flllowed after intsalling nRF51 SDK:

\Keil\ARM\Device\Nordic\nrf51822\Board\pca10001\s110\ble_app_beacon_code\main.c

but I still don't know how the BLE stack work after reading SDK document ... (more)

369
views
no
votes
2
answers
Last activity 2014-08-21 11:32:28 +0200 by Anonymous

nRFgo studio can not find the chip on nRF6310 board!!! [closed]

Hi everyone,

Just recently I've got two nRF6310 EVB boards with a nRF51822! When I connect board via USB and open the nRFgo Studio, it can recognize the board as nRF ISP motherboard connector! I want to test the ... (more)

3k
views
13
votes
5
answers
Last activity 2014-08-21 08:52:48 +0200 by jrh

flash programming PCA10000 using Master Control Panel [closed]

Hi, whenever i try to program the PCA10000( USB dongle) using MASTER CONTROL PANEL(3.4.0) i'm getting log messages like as below,

"........... Successful flash! Enabling read back protection for ALL regions Resetting, SysReset "

After returning to main ... (more)

334
views
no
votes
no
answers
Last activity 2014-08-21 07:36:16 +0200 by ali zaidi

how to resolve this linker error in keilv5 [closed]

Hi Hakon.... when i compile my project i get some linker errors,

._build\gzll_host_ack_payload.axf: Error: L6218E: Undefined symbol __main (referred from arm_startup_nrf51.o). ._build\gzll_host_ack_payload.axf: Error: L6218E: Undefined symbol __aeabi_memcpy (referred from nrf_gzll.o). ._build\gzll_host_ack_payload.axf: Error ... (more)

296
views
5
votes
2
answers
Last activity 2014-08-21 04:43:18 +0200 by Nguyen Hoan Hoang flag of Canada

nAN-29 - no project file for ble_app_hrs [closed]

I'm following nAN-29 and when I go to import the Eclipse project file for ble_app_hrs I get a message "No projects are found to import". I've pretty much followed nAN-29 to the letter and tried multiple times at ... (more)

1k
views
no
votes
1
answer
Last activity 2014-08-21 00:32:59 +0200 by Lowell Skoog

faster TWI on nrf51822 [closed]

I've been working on an interrupt driven I2C driver. I have the basic driver working, but I'm hoping to squeeze a bit more speed out of it.

I'm mostly doing fairly long transactions, ~10-100 bytes. For one ... (more)

481
views
6
votes
1
answer
Last activity 2014-08-21 00:12:34 +0200 by Konstantin K

sd_flash_page_erase() returns BUSY [closed]

We have code that must erase a page in flash every once in a while, while S110 is advertising. The advertising interval is set to 0xF4 (which is about 150ms) and we have scan response data.

We are seeing that ... (more)

1k
views
5
votes
3
answers
Last activity 2014-08-20 23:45:30 +0200 by Sean

How to restore nRFgo motherboard firmware [closed]

This is an howto on restoring your nRFgo motherboard firmware.

Error code can be similar to this from nRFgo Studio:

Starting bootloader on board 0
Could not start the bootloader on the nRF6310
Please toggle power of board 0 to ...
(more)

809
views
2
votes
3
answers
Last activity 2014-08-20 16:53:45 +0200 by Hung Bui

Very low throughput - getting BLE_GATTS_EVT_WRITE only once every 2 sec [closed]

(I also posted this on the mbed BLE_API forum)

Hi all,

Sorry for the long post, I'm starting yet another discussion on BLE throughput, but I feel this merits a deeper look.

tl;dr - I'm getting BLE_GATTS_EVT_WRITE callbacks ... (more)

2k
views
8
votes
2
answers
Last activity 2014-08-20 16:15:08 +0200 by Nikita

Radio notification only after BLE radio [closed]

I'd like to get a notification every time after the radio has been active (as shown as NACTIVE in the S110 rev 1.3 spec). How can I make this mappen?

I see two functions available: sd_radio_notification_cfg_set and ble_radio_notification_init ... (more)

2k
views
8
votes
7
answers
Last activity 2014-08-20 16:00:17 +0200 by jason

Nordic nrf51822 project templates for Eclipse [closed]

Following along after my nrfjprog mini-tool for OS X, I've just released a plugin for Eclipse which exposes a template for setting up projects with the right settings for Eclipse native building (i.e. no Makefile).

My plugin builds ... (more)

250
views
1
vote
1
answer
Last activity 2014-08-20 15:18:24 +0200 by Sebastian

Question of nRF51822 BLE Stack API firmware ... [closed]

image description

The nRF51822 BLE stack API source for the above question ...

fp_handler = conn_mw_item [i] .fp_handler; For fp_handler function pointer, I want to get information about a function is executed internally ....

And

err_code = fp_handler (p_rx_buf, rx_buf_len, p_tx_buf, p_tx_buf_len); In

Send to the ... (more)

743
views
no
votes
1
answer
Last activity 2014-08-20 15:17:40 +0200 by John DeWitt flag of United States

Flash write after flash erase, fails [closed]

Hi

I'm using sd_flash_erase to clear a page in flash. The event NRF_EVT_FLASH_OPERATION_SUCCESS comes to my sys_evt_dispatcher. After the event has arrived I continue with sd_flash_write.

Now two different things can happen, If the page was already empty, then ... (more)

78
views
no
votes
1
answer
Last activity 2014-08-20 15:07:37 +0200 by John DeWitt flag of United States

Accessing system id during Advertising [closed]

Hi I defined an system id in nrf code & am able to access in the android app after i set service discovery & bonding.Is it possible to view the system id during advertising itself ,so that i can display the ... (more)

550
views
no
votes
1
answer
Last activity 2014-08-20 15:07:18 +0200 by Stefan Birnir Sverrisson flag of Iceland

Custom service design: irq vs timer [closed]

I have several asynchronous аperiodic sensors with their interrupt handlers. My service should gather the data from those sensors and do some math. The outcome of this math may be cause of alarm. Delays in few seconds are acceptable. Losing ... (more)

607
views
2
votes
1
answer
Last activity 2014-08-20 12:40:59 +0200 by Hung Bui

Getting the new updated value of a write long in the event handler [closed]

I'm getting an event when a write long is completed (the line with BLE_GATTS_OP_EXEC_WRITE_REQ_NOW):

static void on_write(ble_mlbx_t * p_mlbx, ble_evt_t * p_ble_evt)
{
  ble_gatts_evt_write_t * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write;

  switch (p_evt_write->op)
  {
    case BLE_GATTS_OP_WRITE_REQ:
      if (p_evt_write->handle == p_mlbx->inbox_char_handles.value_handle ...
(more)

3k
views
16
votes
2
answers
Last activity 2014-08-20 12:35:38 +0200 by Hung Bui

Writing long characteristic values [closed]

Hi, I've the need to write a characteristic value of 65 bytes, from my central device (iPhone/iPad) to a nRF51822 peripheral device, so I was looking at this document for how to implement the write long characteristic on ... (more)

2k
views
no
votes
2
answers
Last activity 2014-08-20 11:34:28 +0200 by Nikita

about nrf51822 and chip antenna layout [closed]

I am making a module using nrf51822 and a chip antenna.

I need a layout from nrf51822 to a chip antenna through matching chircuit.

Unfortunately, I don't know how to tune antenna.

so, I will copy a layout in ... (more)

140
views
no
votes
1
answer
Last activity 2014-08-20 10:13:14 +0200 by wedl

How two-way transmission of data on nrf518 [closed]

I tried to set a GATT server and a GATT client for each Central and Peripheral, but code exceeds the memory limit.

Then i consider to transport by HCI. But I totally confused after watch the sdk document. Does the ... (more)

308
views
no
votes
1
answer
Last activity 2014-08-20 09:54:43 +0200 by Stefan Birnir Sverrisson flag of Iceland

SPI Slave CLK [closed]

Hi

I'm using two different designs using nRF51822 as SPI Slave. One is using p0.07 as CLK input and the other is using p0.06 as CLK input. I'm using the code from spi_slave.c/h without ... (more)

95
views
1
vote
1
answer
Last activity 2014-08-20 09:23:15 +0200 by Pål Håland

p_evt_write->len = 3 and p_evt_write->data contains only one char [closed]

Hi,

I get strange error. p_evt_write data array should contains 3 values but contain only one (first).

Please take a look: image description

What can be the reason and how to fix it?

Thanks!

757
views
3
votes
2
answers
Last activity 2014-08-20 08:29:47 +0200 by Hailang

Migration from SDK 5.2 to 6.0 and SD 6.0 to 7.0 issues [closed]

Hi,

I am migrating to the latest code versions (both SDK and Softdevice) but I am having issues when I start the notifications on a BLE app. The errors I am seeing are almost identical to what is seen here ... (more)

1k
views
2
votes
2
answers
Last activity 2014-08-19 19:55:50 +0200 by Luke

ANCS Bonding Without an App [closed]

I have the RedBear BLE shield running on an Arduino Leonardo. I am using the ANCS Library from here: https://github.com/guyzmo/avr_nrf_anc... and have updated it to run the latest Nordic BLE library.

I have everything up and ... (more)

472
views
no
votes
no
answers
Last activity 2014-08-19 19:22:52 +0200 by Anurag

Having problems developing a code for data acquisition with 12-bit adc using nrf24le1 [closed]

I have a fully functional code for 8-bit data acquisition using nrf24le1. Now i want to upgrade it to 12-bit resolution ,but i have problems in doing so .

In my project i am trying to read electrical signals through 7 ... (more)

263
views
3
votes
2
answers
Last activity 2014-08-19 18:55:57 +0200 by mnhs

Does the nrf51822 ADC support bipolar inputs? [closed]

Hello,

I am currently working on a project that requires my analog signal to swing below and above ground. I was wondering if the ADC of the nrf51822 would be able to support such an input?

Thanks,

Alfredo

117
views
3
votes
1
answer
Last activity 2014-08-19 18:29:51 +0200 by mnhs

lost antenna and nrf51822 samples [closed]

Hi,

I have ordered nrf51822 development kit with one of my local vendor. when the product came to india , it was checked in customs office somehow the samples in the kit and antenna got lost. can somebody help me finding ... (more)

Statistics

  • Total users: 23023
  • Latest user: Numbers Arnott
  • Resolved questions: 9857
  • Unanswered questions: 2922
  • Total questions: 23725