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Last activity 2017-01-18 05:26:40 +0200 by cauzsh

Is there some relations between Gpio17 and ble advertisement on nRF51822?

Hi there: I found a strange phonomenon about consumption betweeen advtisement and gpio17 of 51822. When I start ble adv while setting gpio17 to input disconnected mode with no_pull, the min consumption can be less than 5uA, but when I ... (more)

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Last activity 2017-01-18 05:09:08 +0200 by Daniel T. Lee

BLE400 compatible with PCA 10028?

I'm trying to following example of nRF51_SDK_v12 OTA-DFU Example, but there are no support with BLE400 at all. (BLE 400 has nrf51822 QFACA1 1536EK Chip on it)

I think this board is pretty similar to PCA10028 DK Board, But ... (more)

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Last activity 2017-01-18 05:05:09 +0200 by Danae Oldham flag of Italy

The Quintessential Guide to Home Businesses

<img src="http://media4.picsearch.com/is?5ZTq5PDuXnmuAQt3hrEfezH5I2nJjn-h1_VbSocFdAk&height=130" alt="internet marketing association india" title="internet marketing association india (c) gerrardindiabazaar.com" style="max-width:400px;float:left;padding:10px 10px 10px 0px;border:0px;">If you'd like to ... (more)

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2
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Last activity 2017-01-18 04:42:02 +0200 by love you

nRF52840 over the air firmware/software update

Does nRF52840 support over air firmware/software update? Is there any white paper or app note available?

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Last activity 2017-01-18 01:16:55 +0200 by Spectre

How to hope frequency after send Ack in ESB

Hi, I use a nRF52832 on pca10040 with s132 as RX and an arduino uno with a nRF2401L+ as TX

The nRF52 is a BLE NUS peripheral and can receive ESB packet with timeslot like this

The nRF24 send ESB ... (more)

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Last activity 2017-01-18 00:37:17 +0200 by Pranav Sanghadia

nRF52840 pricing and availability

I am not sure if this is the right forum to ask this question but I can't find details on availability and pricing for nRF52840. I tried calling DigiKey but they don't have this part in their inventory ... (more)

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3
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Last activity 2017-01-18 00:02:12 +0200 by Roger Clark

nRF51822 reading Heart Rate Monitors

Hi, I need to read more than 3 or 4 Bluetooth Heart Rate Sensors (like chest strap, arm band, and so on)... I need to do this using Arduino and some library. Could someone help me? Thanks.

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Last activity 2017-01-17 23:57:23 +0200 by wecare

How to use nRF52832 Dev kit for Bluetooth 5?

Is it possible to use Bluetooth 5 for nRF52832 chip? if so, how can I use nRF52832 on Bluetooth 5?

Any tutorial available ?

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1
answer
Last activity 2017-01-17 23:23:53 +0200 by Håkon Alseth

Microbit development with Segger Embedded Studio & SDK 12.2

All,

I recently acquired a BBC Microbit and have been having a play with trying to setup a development environment using the Segger Embedded Studio and the Nordic 12.2 SDK. I was wondering if anybody else had been down ... (more)

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1
answer
Last activity 2017-01-17 21:18:32 +0200 by Jørgen Holmefjord flag of Norway

can i control pin 24(or any other) on nrf51 dk(nrf51422) using iot sdk?

I have set up raspberry pi 3 as a border router and programmed the the nrf51422 using the iot_ipv6_coap_server_pca10028 and could successfully switch on and off led3 and led4 using copper coap,can i control pin24 on nrf51dk if yes ... (more)

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1
answer
Last activity 2017-01-17 20:57:27 +0200 by AndrewF

rx chain delay larger then tx chain delay

Hi,

in the NRF52832 documentation the TX chain delay is 0.6 µs while the RX chain delay is 9.4µs. Does that mean if transmitting two packets in a row to the same receiver, that the receiver will miss ... (more)

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Last activity 2017-01-17 20:18:57 +0200 by SRA

Schedular vs RTOS vs Blocking, need scheduler clarification.

I have a project coming up that uses:

  • BLE Softdevice, a fair amount of GATT data
  • SPIM with a fairly high data rate, slave has a RDYN (data ready now) IO to the rnf52
  • UART
  • some application subfunctions that need ...
(more)

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1
answer
Last activity 2017-01-17 18:57:03 +0200 by SRA

Is it possible to program nRF52 DK with Python instead C language?

I wonder is it possible to program nRF52 DK with Python instead C language? And are there any examples with python?

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Last activity 2017-01-17 18:00:40 +0200 by Collin Moore flag of United States

How to check for pending interrupts before calling sd_app_evt_wait?

Hi. I am having trouble getting the sd_app_evt_wait() call to work correctly in my code. My main program works like this:

<inits>
for(;;)
{
   <read saadc>
   <sd_app_evt_wait> // app_timer should make this return in 10 seconds
}

I have an app_timer that causes ... (more)

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Last activity 2017-01-17 17:08:07 +0200 by User1321

High Fequency UART transmissions

I am using the nrf52832 with its Development kit to transmit trough UART to the PC a frame with 26 bytes, I have configured the port to 1MBoudRate. Once I prepare the frame I use the next instructions to transmit ... (more)

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1
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1
answer
Last activity 2017-01-17 16:28:41 +0200 by Ole Bauck flag of Norway

IS it possible to supply NRF52810 lbr for eagle layout best regards

IS it possible to supply NRF52810 lbr for eagle layout best regards

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Last activity 2017-01-17 16:10:18 +0100 by Ankush

Code getting restarted after getting error as FR_DISK_ERR

Hi,

I am working on interfacing SD card with nrf52. I am sampling SAADC at 1000 sps and trying to write over SD card as well as sending over BLE. Both operations are working fine but after FR_DISK_ERR , entire code ... (more)

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1
answer
Last activity 2017-01-17 15:37:54 +0200 by Hung Bui

In LE Privacy mode, does the address of the advertising entity change after connection is established?

In Bluetooth Spec (CoreV5.0, Vol6, Chepter6, Section1) it is mentioned that the random private address is generated periodically by a timer handler. I could not find any mention on whether the timer should be stopped when a connection is ... (more)

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Last activity 2017-01-17 15:28:24 +0200 by dblasco

LPCOMP Reference Selection

Hi everyone,

I am using LPCOMP in rFF58122. When coosing the reference voltage, I have to fill the structure nrf_drv_lpcomp_config_t with the hal nrf_lpcomp_config_t that includes the reference voltage (nrf_lpcomp_ref_t).

This nrf_lpcomp_ref_t (in nrf_lpcomp.h) may be from 1_8 to ... (more)

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1
vote
1
answer
Last activity 2017-01-17 14:56:41 +0200 by Hung Bui

How can I read the payload data sent from service?

I am using the nRF52840 Preview DK with BLE 5.0. In the BLE ATT_MTU Throughput Example,I use several api such as sd_ble_gatts_value_get and so on,but i still can not read the correct data. How can I read ... (more)

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1
answer
Last activity 2017-01-17 14:50:17 +0200 by Sigurd flag of Norway

usb transfer on nrf52840

1.specification says that we should trigger EP0STATUS task to initiate the status stage for control transfer(read/write).

actually nrf52840 will auto ack the OUT TOKEN i.e. the status stage of control read transfer,but nak the IN ... (more)

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Last activity 2017-01-17 14:17:05 +0200 by NK99

Quadrature decoder with redbear ble nano

Help!! I need to implement a dc motor position control and i have problem reading the encoder (too fast). I have seen that nrf51822 has a qdec peripheral. Any suggestions how to use it with ble nano? Also any suggestions ... (more)

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1
answer
Last activity 2017-01-17 13:47:11 +0100 by Sigurd flag of Norway

LL_CONNECTION_UPDATE_REQ PDU

I'm looking for an example code of central role which can run on nRF52 DK. I want to check if it is possible for nRF52 DK to send a LL_CONNECTION_UPDATE_REQ PDU to slave.

Does anyone help me to check this ?

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votes
1
answer
Last activity 2017-01-17 13:19:36 +0200 by Brendan S

app_timer_cnt_get() always returns 0x0018000 (SDK12.1.0)

I'm trying to use app_timer_cnt_get() to implement an RTC Calendar system on a Gigawit module (nRF51822).

I have a test app_timer that has presacler=0 and period=3 seconds. The callback works as I toggle a LED, and it ... (more)

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2
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Last activity 2017-01-17 12:38:52 +0200 by Torbjørn Øvrebekk

creating service specific to my ios app in nrf51 dk

Hi

i want to create specific service on ble so that only my mobile app should recognize it and able to connect to it. i have gone through https://devzone.nordicsemi.com/questi... if this is the right way then ... (more)

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1
answer
Last activity 2017-01-17 12:28:38 +0100 by Bjørn Spockeli flag of Norway

How to do nrf51DFU from remote PC ?

I made a custom BLE device using nrf51822 and need to do DFU from remote place. The BLE device is connected using USB to windows PC.
The Serial bootloader examples are for Over-the-air DFU using MCP.

I need DFU by ... (more)

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votes
1
answer
Last activity 2017-01-17 12:12:44 +0200 by Jørgen Holmefjord flag of Norway

error in compilation of led blinking using gpio?

upload.jpg undifined symbol rfgpio_cfg_output(refered from main)

26
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answers
Last activity 2017-01-17 12:07:42 +0200 by kibo

How to start application without DFU

Hi,

SDK version : 11.0 Softdevice : 0x88 DK : nrf52832

I merged Softdevice.hex, application.hex and bootloader.hex into one hex file, and uploaded this file to my Development kit.

When I turn on the DK, the DK is booted ... (more)

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votes
1
answer
Last activity 2017-01-17 11:36:13 +0200 by J.M.

stop the advertising S130

I try to stop the advertising by using ble_advertising_start(BLE_ADV_MODE_IDLE) when the advertising is ongoing. It fails.

Please tell me how to stop advertising when the advertise is on going. I don't want to use advertising timeout because for ... (more)

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Last activity 2017-01-17 11:00:05 +0100 by Prashant H

Device get reset during autoconnection but very rarely

I am using S130, nRF51822, SDK v11.0. Device is configured as when it gets disconnect from app, device goes into advertising mode for unlimited time. When any mobile app autoconnect it, device stops advertising and goes into connected mode ... (more)

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