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Last activity 2017-06-23 10:48:51 +0200 by Jørgen Holmefjord flag of Norway

Using RTT viewer in SDK 12.2 SES

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 the CMSIS wizard that uses Java ... (more)

23
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no
votes
1
answer
Last activity 2017-06-22 21:40:20 +0200 by endnode

S130 central disconnected immediately after connection to iOS peripheral

Dear developers, I am developing a scheme where the nRF51 (central role) connects to iOS device (peripheral roles). The nRF51 connects, performs the discovery procedure and interacts with desired characteristics.

However, this only works for some iOS peers (some phones ... (more)

42
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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)

41
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no
votes
1
answer
Last activity 2017-06-15 10:36:14 +0200 by emdi

FDS error in FDS_VIRTUAL_PAGE_SIZE 1024 ?? (NRF51)

FDS error in FDS_VIRTUAL_PAGE_SIZE 1024 ?? (NRF51)

https://github.com/hubuhubu/nRF52-fds...

If I use FDS_VIRTUAL_PAGES 3, FDS_VIRTUAL_PAGE_SIZE 1024, then there comes FDS_ERR_BUSY. DO I HAVE TO GIVE DELAY BETWEEN fds_register fds_init??

(I'd like to save about 3KB size Structure ... (more)

39
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1
vote
no
answers
Last activity 2017-06-15 00:38:30 +0200 by justPassingBy

NRF51 to NRF52 MPU-9250 problem

Hello everyone,

We're currently in the process of porting our code from the NRF51 to the NRF52 (both without any softdevices). Everything compiles and seems to be working fine, except for one part, which is that the connected MPU-9250 ... (more)

45
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1
vote
1
answer
Last activity 2017-06-14 13:40:38 +0200 by Kristin flag of Norway

My Timer-GPIO program doesn't run, could someone please advise? [closed]

> /** @file
> * @brief Example template project.
> * @defgroup nrf_templates_example Example Template
> *
> */
> 
> #include <stdbool.h>
> #include <stdint.h>
> 
> #include "nrf.h"
> #include "nrf_gpio.h"
> #include "nrf_drv_config.h"
> #include "nordic_common.h"
> #include "nrf_delay.h"
> #include "app_error.h"
> #include "app_timer.h"
> #include "nrf_gpiote.h"
> #include ...
(more)

98
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2
votes
2
answers
Last activity 2017-06-11 23:24:57 +0200 by Dima

Bootloader without SoftDevice

Hello

I am building bootloader. I do not use Softdevice and used example from this topic. Bootloader must read FW from uSD card, update flash and jump to application. uSD card is connected to SPI0 of nrf51. SPI1 is used ... (more)

109
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no
votes
1
answer
Last activity 2017-06-09 15:22:45 +0200 by Torbjørn Øvrebekk

want nrf24l01 communication with nrf51822

hello,will you please tell me which code i have to use in the sdk 12.2.0 for rf communication with nrf51822 and nrf24l01 .and also tell me which settings i have to do for nrf24l01 side as a ... (more)

70
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1
vote
1
answer
Last activity 2017-06-09 12:31:36 +0200 by David Edwin

Transfer large data with ble-bcast-mesh

Hello,

i'm currently looking into ble-bcast-mesh with the goal to transfer a large amount of data (up to 1kB) from one node to another. ble-bast-mesh is working (as far as i understand it) by broadcasting data in handles to ... (more)

85
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1
vote
1
answer
Last activity 2017-06-09 11:27:34 +0200 by Kristin flag of Norway

How to make the nRF51 UART Peripheral Example connect/function with the nRF52 UART Central Example

I am attempting to connect and send data between an nRF51422 (DK) running the UART Peripheral Example Code and an nRF52832 (DK) running the UART Central example. I am able to successfully load the code onto both devices and monitor ... (more)

24
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no
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no
answers
Last activity 2017-06-08 23:05:03 +0200 by Chris J

FCS errors only in last bit of CRC and not the rest of the packet

I am using the esb_tx example on an nRF51 DK board modified to send BLE advertising packets at 1 KHz.

I am receiving the packets on a BlueTooth sniffer. The contents of packets is fine, but about 5% of the ... (more)

63
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1
vote
1
answer
Last activity 2017-06-08 08:26:50 +0200 by Kristin flag of Norway

NRF_LOG_PROCESS

In example "ble_app_hts" NRF_LOG_PROCESS don't work. but in this "...\examples\peripheral\temperature" is workin good. I didn't make any change in code. Some ideas?

148
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6
votes
2
answers
Last activity 2017-06-07 08:26:45 +0200 by Olivier

Best way to send data from many sensors

Hi,

For an application I have a nRF51 at my disposal and I need to transfer about 3'000Bytes. I found in the documentation that the nRF51 can use the S130 SoftDevice which support BLE 4.2. The data I ... (more)

32
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no
votes
no
answers
Last activity 2017-06-07 04:54:21 +0200 by Cooper

Packet loss in mesh network

I use the nRF OpenMesh from the GitHub. (https://github.com/NordicSemiconductor/nRF51-ble-bcast-mesh)

My mesh network just has two mesh node, node A and B. I made A node as a broadcaster, B node as a receiver. "MESH_INTERVAL_MIN_MS" setting to ... (more)

49
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no
votes
2
answers
Last activity 2017-06-02 14:28:22 +0200 by Jay S.

spi missing interrupts

I am using NRF51422 S130. I have a master SPI configuration set up, and not using Nordic spi drivers provided in the examples. I think my configuration is correct.

1- I send one byte of data at 2Mbips clock rate ... (more)

64
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no
votes
1
answer
Last activity 2017-06-01 12:26:02 +0200 by Hung Bui

Add configuration via additional hex

Hi

I would like to prepare a provisioning hex file for my firmware. Can somebody supply an example how this could be made?

I'm using gcc toolchain, Eclipse and SDK 12.3 for development.

Example: I would like to ... (more)

101
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no
votes
3
answers
Last activity 2017-05-31 17:06:38 +0200 by khosla

time synchronization across different nodes in a mesh network, single hop as well as multi hop.

I am working on time synchronizations between different nodes in a mesh network. I have earlier worked on the radio and the ppi examples given. I wish to generate time stamps at each send and receive events between two different ... (more)

1k
views
11
votes
1
answer
Last activity 2017-05-24 08:48:48 +0200 by Aryan flag of Norway

what are SDK 9.0 known issues

On SDK 9.0 only

  • Do not judge the quality of SDK based on number of entries here. This thread should be considered part of Nordic effort to main the quality of the release.

GENERAL RULE TO KEEP THIS PAGE ...

(more)

83
views
1
vote
2
answers
Last activity 2017-05-19 13:46:34 +0200 by Wojtek flag of Poland

Can nRF51422 or nRF51822 can be used as bluetooth device for Raspberry pi?

Can nRF51422 or nRF51822 can be used as bluetooth device for Raspberry pi?

As I can see on the terminal Linux, the hciconfig log says, raspberry pi 3's Bluetooth device is connected to board with UART Connection.

I'm ... (more)

47
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1
vote
1
answer
Last activity 2017-05-18 14:57:48 +0200 by Torbjørn Øvrebekk

NRF51 - Hardware UART - hints needed

Hi

I'm using the NRF51422 with hardware UART. Brief outline of the configuration: 115200 Baud, 8-N-1, no HW flowcontrol SoftDevice S130 V2.0.1 lib: app uart fifo

The main problem seems to be the SoC trying to send ... (more)

24
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no
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no
answers
Last activity 2017-05-12 10:50:57 +0200 by Adam Heinrich flag of Czech Republic

nRF51: Expectable flashing speed in production?

Dear developers,

we are considering purchase of a reliable programmer capable to flash the nRF51822 in production, one possible option is the SEGEGR FLASHER PORTABLE or FLASHER ARM. I know that the programming speed highly depends on the actual target ... (more)

31
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no
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no
answers
Last activity 2017-05-11 17:35:45 +0200 by Krzysztof Zaraska

RTX timer too slow / too fast

I'm using RTX timers on NRF51 and I'm getting a 7ms per second error. (I.e. osDelay(1000) takes 1007ms).

It appears that NRF_RTC1 is configured incorrectly in SDK examples. I'm using SDK10, but looking at SDK12 ... (more)

64
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no
votes
no
answers
Last activity 2017-05-11 07:52:30 +0200 by nordicbeginner

software uart in nrf51, nrf52

hello there i think i need two uart in my application. i read datasheet of both nrf51 and nrf52 in both there is only one uart. can anyone have implemented software uart??

57
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no
votes
1
answer
Last activity 2017-05-10 16:02:15 +0200 by run_ar

Can I share SPI MISO pin for SPI peripheral and GPIO interrupt generating?

I got some SPI flash memory that is capable of generating interrupts in order to save some program/erase time and power consumption. The only drawback is that interrupt is generated on SPI MISO pin. I wonder if I can ... (more)

45
views
no
votes
1
answer
Last activity 2017-05-09 13:33:52 +0200 by Petter Myhre flag of Norway

Using ANT with nrf51 dongle for beginner

Hi, I'd like to use nrf51 dongle to scan for ant/ant+ communication, but I can't understand how to do that... it doesn't work with antware sw and I don't know how to use it in ... (more)

55
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2
votes
2
answers
Last activity 2017-05-07 06:29:49 +0200 by RK flag of Singapore

How Can I limit Gatt Data bytes that I write? (Not With Zero-Fill)

I created an characteristic that has MAX_Length = 20 Bytes characteristic.

And When I'm trying to write less than 20bytes on this Characteristic, It Always send with 20Bytes with Zero filled data bytes.

For example, I'd like to write ... (more)

75
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no
votes
2
answers
Last activity 2017-05-05 11:03:11 +0200 by IlyaM

How to send 1 byte via SPI from master to slave

Hello everyone, I'm trying to run my nrf51 with ADS1298 using SPI. nrf51 is master and ADS1298 is slave.

I configured SPI as

const nrf_drv_spi_config_t spi_config =
    {
            .sck_pin = 25,
            .mosi_pin = 24,
            .miso_pin = 23,
            .ss_pin = 30,
            //.irq_pin = 22,
            .irq_priority = APP_IRQ_PRIORITY_HIGH,
            .orc ...
(more)

356
views
4
votes
1
answer
Last activity 2017-05-03 11:28:00 +0200 by Vasanth Dhinakaran

Recognising a received uart character

I've been having a little bit of an issue trying to parse UART data that I am receiving from an external device.

Where I'm having issues right now is comparing an incoming byte with a specific character. I ... (more)

266
views
no
votes
1
answer
Last activity 2017-05-02 15:46:29 +0200 by Sigurd flag of Norway

ble_mesh flag

Hi,

I want to ask a few question for ble_mesh.

What do these functions do: rbc_mesh_persistence_set(..), rbc_mesh_tx_event_set(..)

Who should do the set operation? Sender or receiver?

I read the document. But will you explain by example?

Thank you

140
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no
votes
1
answer
Last activity 2017-05-02 12:22:32 +0200 by Petter Myhre flag of Norway

How to connect and program the nRF 51 dongle for ant

I am trying to find examples for nRF51 dongle P10031. I would appreciate some guidance and help regarding the same. Its my first time using the device.A link to a sample example or question would prove helpful too. Thank you

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