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Last activity 2017-04-23 23:11:29 +0200 by normanfust

nrf51822 - jlink 0.76V

Hello,

I connected the nrf module to jlink as described:

• vdd(nrf)-----3.3V    
• gnd(nrf)-----gnd
• SDO(nrf)-----SWDIO(jlink)
• SCLK(nrf)-----SWCLK(jlink)
• 3.3V------VTref(jlink)
• gnd------gnd/pin20(jlink)

After executing jlink.exe I receive the following VTref ... (more)

30
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Last activity 2017-04-23 22:21:45 +0200 by Hermes Trismegistus

Sending Char Data via BLE w/MPU6050-nRF51822

EDIT: I used a workaround to get my project working but my question still remains. I just used the template project to send data to my app and manipulated the received data inside the app. I must say I was ...

(more)

3
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Last activity 2017-04-23 22:06:28 +0200 by dc

Installing micro-ecc issue

Hi,

I am following below step for Installing micro_ecc_lib_nrf52.lib.

  1. Install version 4.9-2015-q3-update of the GCC compiler toolchain for ARM. You can use ARM's Launchpad to find the toolchain for your operating system. - DONE

  2. Make sure that make ...

(more)

9
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answers
Last activity 2017-04-23 21:02:54 +0200 by chocol8

BLE Advertising, a beginner's tutorial

Hello everyone,

Lately I have been struggling while trying to run "BLE Advertising, a beginner's tutorial". My hardware consists of NRF51822 and PCA1000 dongle. I use SDK_11.0.0 and the example provided at github https://github.com/NordicSemiconducto ... (more)

17
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1
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answers
Last activity 2017-04-23 14:52:41 +0200 by krt

how to flash programs on nrf51822 via nrf51 DK

and how to hijack nrf51422 with nrf51822 custom board using nrf51DK

11
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answers
Last activity 2017-04-23 14:01:33 +0200 by Wujq

Failed to disconnect from iOS device after several times

Hello. I am developing a project on nRF52832 using SDK 13, in which I need to transfer up to 300 bytes of data from iOS device via my dedicated app (in the background) to nRF in 10 second cycles. Project ... (more)

11
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Last activity 2017-04-23 09:21:06 +0200 by Vincent

ant heart Page0 beat_count and beat_time calculate question

Hi I use SD310 and nRF51 in SDK10 and The Ant is set HRM_MSG_PERIOD_1Hz.

I integrate a heart rate module by I2C and the heart rate data is only all I got.

But the Cell Phone Ant Plus Sample App ... (more)

6
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Last activity 2017-04-23 06:33:48 +0200 by Annim flag of India

NRF24LE1 XOSC16M not Starting

Hello,

Issue: XOSC16M is not Starting and the loop stuck forever in below line

while(!pwr_clk_mgmt_is_cclk_src_xosc16m());

where it checks CLKLFCTRL 's 3rd bit to confirm is XOSC16M is active or not.

PCB Design Detail

  • Taken from Reference Design provided by ...
(more)

37
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Last activity 2017-04-23 06:02:54 +0200 by ghosted

NRF 31512? Where is the datasheet?

Hi, can someone tell me what chip this is and where I can find the data sheet? Or at least if this is a custom fabrication, what chip from Nordic is it based off of? Thanks!

image description

21
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answers
Last activity 2017-04-23 02:41:19 +0200 by Renix

Bluetooth Development Studio with Nordic plugin for SDK 13

Any update on possible when Nordic can update the Plugin to support SDK13?

I was informed that the Nordic Semiconductor v1.2.2 plugin does not support SDK13.

Although I see there is a description under SDK13 that indicates it works. Here

22
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Last activity 2017-04-22 15:50:23 +0200 by Prasad

Automated testing using NRF connect: How to read phone's service characteristics?

I am creating a BLE peripheral device which I want to test using the automated testing feature of NRF Connect. I have connected a android phone to my windows PC and the phone has NRF connect app installed in it ... (more)

50
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Last activity 2017-04-22 15:43:23 +0200 by saiteja

Unable to Read or write MMA8652 registers using TWI

[https://drive.google.com/open?id=0Byj...]

hi i am working on MMA8652 i am working on mma7660 twi example in sdk11 for nrf52. i have changed the registers as the same way the MMA8652 need. here is my read ... (more)

13
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answers
Last activity 2017-04-22 14:42:13 +0200 by Aurabindo

TWI: prevent repeated start between non stop transfer

Hi,

I am debugging an SSD1306 OLED library, and in the datasheet, it does not explicitly mention support for repeated start bits. But using the nrf_drv_ API's with NRF_DRV_TWI_FLAG_TX_NO_STOP flag set, the successive nrf_drv_twi_tx or nrf_drv_twi_xfer function starts sending ... (more)

13
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answers
Last activity 2017-04-22 14:13:00 +0200 by Dmitriy

nRF52382 Zimpedance(RF)

Hello! I'm calculating the matching circuit with the antenna for nRF52832, but nowhere can I find the impedance value of the pins of the radio part, can you help me?

9
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answers
Last activity 2017-04-22 08:00:52 +0200 by xiao

NRF51 simple vector deflection function?

I use STM32F4+nRF51822 through the SPI interface. I want to achieve nRF51822 DFU with SPI operation, now upgrade the simple LED to work properly. But can not work when using Gazlle. I know it is because the interrupt vector ... (more)

9
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answers
Last activity 2017-04-22 02:23:54 +0200 by Anatomy_Park

TWIS Slave and TWI Master mode drivers Example

I am working through the TWIS Slave and TWI Master mode drivers Example using SDK 12 with the nRF52832 PCA10040 board and having issues. I am using Minicom through the terminal on a Mac to talk to the board. After ... (more)

28
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Last activity 2017-04-21 18:31:31 +0200 by Definitely Confused

nRF52832 Internal Oscillator Softdevice Enable Hanging

I'm using the nRF52832 chip without an external crystal. I configured it to use the internal RC with:

nrf_clock_lf_cfg_t clock_lf_cfg;
clock_lf_cfg.source = NRF_CLOCK_LF_SRC_RC;
clock_lf_cfg.rc_ctiv = 16;
clock_lf_cfg.rc_temp_ctiv = 2;
clock_lf_cfg.xtal_accuracy = 0;

// Initialize SoftDevice.
SOFTDEVICE_HANDLER_APPSH_INIT(&clock_lf_cfg, true);

However, the ... (more)

17
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Last activity 2017-04-21 18:21:18 +0200 by jhennrich

nRF5 with input-multiplexer on ADC pin, optimization required

Hey, I am trying to sample from 10 analog sensors and stream the results via bluetooth. Since the nRF5 is on a board that only lets me access 5 Pins, I am using a 16:1 multiplexer connected to a ... (more)

26
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Last activity 2017-04-21 18:04:32 +0200 by Corey Bird

Does hardware control SPIS MISO Pin?

I've run into some interesting behaviour in my code and wanted to see if anyone can clarify for me. It seems as though the SPIS module doesn't set the MISO pin as high impedance when the CSN pin ... (more)

13
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Last activity 2017-04-21 17:01:30 +0200 by Pete

OpenMesh low power

I'm looking to use the nrf open mesh on battery powered devices based on nrf51822. I would like to enable the mesh for short periods of time to transmit values (~50 nodes, each with a single 20 byte attribute ... (more)

23
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Last activity 2017-04-21 16:50:42 +0200 by F0cks

Cannot restart advertising in Beacon example

Hey guys!

I face a problem that I have not been able to solve since several days...

I would like to send only one advertising frame every 4 seconds. I do not want to use connectable mode since I only ... (more)

29
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Last activity 2017-04-21 16:36:39 +0200 by Devin

How to solve reset problem at ESD status?

Hi, Dear Expert:

 I am an Electronic Engineer. We used nRF51422 or nRF51822 at our products, but found the products was easily  reset when did +/-1KV contact ESD testing at charging  pogo pin. So, I added a 1uF capacitor between ...
(more)

27
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answers
Last activity 2017-04-21 15:35:05 +0200 by Bruce

Can we add capacitor to the swdio pin to improve ESD capacity?

Hi experts,

Can we add capacitor to the swdio pin to improve ESD capacity? We have make some sample that add 1uF capacitor to the swdio, indeed have improved the ESD capacity. But we don't know whether it will ... (more)

26
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answers
Last activity 2017-04-21 14:58:39 +0200 by bart

pstorage block size

I was wondering what would be a good block size, and saw this in the documentation:

For example, if a module has a table with 10 entries, and each entry is 64 bytes in size, it can request 10 blocks ...

(more)

102
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answers
Last activity 2017-04-21 12:55:46 +0200 by zcmm

Error 22 GATT_CONN_TERMINATE_LOCAL_HOST

Hi,all SDK:8.1.0 51822 S7 Edge(android V7.0)

i use the sumsung S7 Edge and the oppo R9S connect with my device,nRF Connect is often note:

GATT_CONN_TERMINATE_LOCAL_HOST(after discovery all service ).

And the oppo R9S ... (more)

25
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answers
Last activity 2017-04-21 12:30:50 +0200 by nk

How to calculate precise delay in nrf51822 for Timer ?

i m new in nrf51822 controller so help me for coding of my question. any help will be appriciate. thank you.

24
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answers
Last activity 2017-04-21 12:23:56 +0200 by arvind

Tanotis Global ARM7 ARM9 ARM11 J Link V8 ARM Emulator cortex m3

Hi everyone, i have J TAG V8 and when i am using this with keil software and try to debugging then its showing-

"The connected emulator can not be used with this software."

Reason: "Broken. No longer used"

help me ... (more)

15
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answers
Last activity 2017-04-21 11:39:38 +0200 by Ankit

Exact sequence of Peer Manager events at time of pairing.

Hi, I am performing "just pairing" using peer manager ( SDK 11.0 ) in my custom board which uses nrf52 chip.

I am getting this events

1 - PM_EVT_CONN_SEC_START, 2 - PM_EVT_CONN_SEC_SUCCEEDED, 3 - PM_EVT_PEER_DATA_UPDATE_SUCCEEDED - this events i am getting 4 times but sometimes ... (more)

17
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Last activity 2017-04-21 11:17:09 +0200 by Sigurd flag of Norway

power consumption problem

Hi,

I'm using nrf51822 / sd130 / sdk 12.1. I am doing minimizing current consumption. My main function is like below. I checked no wakeup in sleep mode. But, current consumption changes variously. It is wide from ~30uA to 1 ... (more)

29
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answers
Last activity 2017-04-21 10:57:51 +0200 by Petter Myhre flag of Norway

Problem sending 6 bytes to multiple services using sd_ble_gatts_hvx

I would like to confirm my understanding of Problem sending 6 bytes to multiple services using sd_ble_gatts_hvx

I use nrf52832 sdk13.0.0

BLE SPI is master. I dropped the SCK to 1 Mhz I send x18 bytes of data ... (more)

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