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Last activity 2015-08-01 08:48:59 +0200 by Milad

ADXL 345 Tutorial

Hello all, this tutorial goes to a fellow named Emil who helped me with this project.

Number 1_ Make sure you set up the terminal viewer For debugging with real.You need it to see the values coming outta your ... (more)

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Last activity 2015-08-01 08:48:17 +0200 by Milad

ADXL 345 Tutorial

Hello all, this tutorial goes to a fellow named Emil who helped me with this project.

Number 1_ Make sure you set up the terminal viewer For debugging with real.You need it to see the values coming outta your ... (more)

6
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Last activity 2015-08-01 03:49:13 +0200 by F

app timer causing assertion after disconnection event

SoC: NRF51822 xxAC Toolchain: MDK-Lite Version 5.15 Softdevice: S110 SDK Version: 8.1.0_b6ed55f

I'm using a custom board which is functioning well. The app is functioning normally during advertisement and connection, but I am getting ... (more)

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Last activity 2015-08-01 01:47:46 +0200 by Cameron Tacklind

SDK9 gcc linker script includes file that doesn't exist

I'm writing a build script for gcc for the nRF51 and I want to use the provided .ld scripts.

In SDK 8, those scripts were renamed from gcc_nrf51_XXX_xxab.ld to nrf51_xxab.ld.

In SDK 9, it looks like someone ... (more)

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Last activity 2015-08-01 01:38:19 +0200 by pabigot

clarification of PAN#73 (v3 TIMER PPI sleep issues) workaround

The workaround for nRF51822 PAN#73 specifies setting an undocumented register at offset 0x0C0C of the timer peripheral to 1 prior to TASKS_START, and clearing it after TASKS_STOP.

Two questions:

  • The description says "Routing TASKs...using the PPI and at ...

(more)

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Last activity 2015-08-01 01:12:54 +0200 by Brandon A

Is it possible to make 5 PWM outputs on NRF51422 (or NRF51822)?

I know that it is possible to make 4 PWM outputs, but I need to generate 5. I will be using SoftDevice 110 and BLE. Is there any possible way to generate a 5th PWM output?

Any advice would be much appreciated.

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Last activity 2015-08-01 00:55:18 +0200 by pabigot

suggestion: permanent infocenter links to product anomaly descriptions

Now that the infocenter is available, please consider making product anomaly descriptions available at a permanent URL, e.g. http://infocenter.nordicsemi.com/nRF51822/PAN#11.

The frameworks I develop for Nordic chips generally include workarounds for relevant anomalies, and ... (more)

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Last activity 2015-07-31 23:41:39 +0200 by PrithviRaj Narendra

Not able to download program with GCC setup

Hi all, I have the exact issue mentioned here - https://github.com/hlnd/nrf51-pure-gc... I have updated my makefile to generate only one bin file from the Softdevice Hex file, but still I'm getting the ' Failed to download RAMCode ... (more)

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Last activity 2015-07-31 21:57:51 +0200 by danbujak

Proper way to wait for events

I'm trying to establish a bond in my project and then perform service discovery, however the discovery is returning the BUSY error.

I tried to wait for the events according to the documentation but they will never trigger so ... (more)

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1
answer
Last activity 2015-07-31 20:52:45 +0200 by andlier

current increases by about 1.5 mA after a battery check.

Hi all.

Consumption current increases by about 1.5 mA after a battery check.

uint8_t battery_start(void) { // Configure ADC NRF_ADC->INTENSET = ADC_INTENSET_END_Msk; NRF_ADC->CONFIG = (ADC_CONFIG_RES_8bit << ADC_CONFIG_RES_Pos) | (ADC_CONFIG_INPSEL_SupplyOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) | (ADC_CONFIG_REFSEL_VBG << ADC_CONFIG_REFSEL_Pos) | (ADC_CONFIG_PSEL_Disabled << ADC_CONFIG_PSEL_Pos) | (ADC_CONFIG_EXTREFSEL_None << ADC_CONFIG_EXTREFSEL_Pos); NRF_ADC->EVENTS_END = 0; NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Enabled ... (more)

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Last activity 2015-07-31 19:41:49 +0200 by Stickables

Wireless programming Arduino with nrf8001

We're building a low cost device with an nRF8001 as the only means of communication as physical access is closed after the device is built.

Is there any way to change the nRF8001 output mode to stream data directly ... (more)

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1
answer
Last activity 2015-07-31 18:20:29 +0200 by nightgoat

Ble App Uart PCA 1008 not working

Hello, For some reason the Ble App Uart is not working on my PC anymore. I have gone over Nordic tutorial again however, the LED doesnt blink and I cant detec the device on my phone or by MCP. I ... (more)

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Last activity 2015-07-31 17:44:25 +0200 by nightgoat

Softdevice assert

Hi, What are the general causes of SDS assert in nrf51/52 ? Assuming that SW has been tested, is there something that could happen in the code that would cause the assertion ? Can some HW malfunction cause the assert and ... (more)

12
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1
answer
Last activity 2015-07-31 17:28:20 +0200 by Alex flag of United Kingdom

RSSI measurement with nrf master control panel

I want to measure the RSSI strength of my Bluetooth module, in various distances and situations. I read in the description of the app nRF Master Control Panel that:

  • Shows RSSI graph, allows export to CSV and Excel formats

Now ... (more)

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Last activity 2015-07-31 16:14:46 +0200 by thegilbster

How to production test output power of 24L01+ module

Does anybody have a suggestion for a relatively low cost way to test the output power of a nRF24L01+ module? We make the modules (which are identical to the demo module) in batches of approx 5000 and we have a ... (more)

2
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Last activity 2015-07-31 15:45:28 +0200 by valig

Pipe status default values

Hello,

After I connect my iPhone with a 8001 nordic chip without opening the characteristic I receive a pipe status event which says that the pipe is opened. This is totally wrong because the application is closed.

Why does this ... (more)

7
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1
answer
Last activity 2015-07-31 15:25:55 +0200 by Petter Myhre flag of Norway

Change Gazell channel manually on the fly

I'm trying to implement ANT+ style frequency hopping, where it would change channel whenever it detects a raise in packet loss. For that I need to be able to switch channel on the fly, without disabling Gazell. Is there ... (more)

32
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2
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1
answer
Last activity 2015-07-31 14:32:31 +0200 by Petter Myhre flag of Norway

How can I close a open BLE connection properly from peripheral side

Hello,

in our final device, I want to give the user the opportunity, to close an opened BLE connection between our device and another smart device. This should be done by pushing a button. At the moment, if the button ... (more)

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1
answer
Last activity 2015-07-31 14:22:25 +0200 by Petter Myhre flag of Norway

MITM attacks

Hello,

We avoid MITM attacks by using a static passkey. Is it means that the attacker can decrypt the connection if attacker get the passkey? What I transfer or receive data will be captured by the attacker?

6
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Last activity 2015-07-31 14:18:48 +0200 by carvalhn

Hameg oscilloscope setting

Hi Guys,

I am using a the 350Mhz Analog Oscilloscope HM303-6 http://www.hameg.com/hm303-6.0.html to measure the voltage utilised by the board when it is transmitting data.

I have cut SB9 soldered a resistor of 10 ... (more)

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1
answer
Last activity 2015-07-31 14:10:42 +0200 by Petter Myhre flag of Norway

SDK example doesn't work on PCA10001

Hello, I have downloaded the nRF_MDK_7_2_1, and open \Keil_v5\ARM\Device\Nordic\nrf51822\Board\pca10001\s110\ble_app_beacon\arm\ble_app_beacon with Keil_v5.

I set IROM1 start from 0x0 and size is 0x40000, IRAM1 start from 0x2000000 and size is 0x4000. Then ... (more)

13
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1
answer
Last activity 2015-07-31 13:50:24 +0200 by Hung Bui

How to modify ld to support 16KB RAM from 32KB

HI People,

I use nrf51822 CEAAE00 (0x0079) chip which has 256 kB FLASH, 16kB RAM. I faced a problem when compiling the bootloader for it. The solution was I am using a 16KB RAM, while the example is for a ... (more)

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2
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Last activity 2015-07-31 13:46:23 +0200 by Nguyen Hoan Hoang flag of Canada

J-Link SWD Programming for the nrf51822

I am trying to build a custom board, based loosely on the nrf51-DK (which I have been testing). I haven't ever directly programmed a chip before (always used interface MCUs). I have bought a J-link BASE.

Firstly, I can ... (more)

76
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2
answers
Last activity 2015-07-31 13:39:11 +0200 by mohamed

pstorage problem when turning power off

I'm currently using the pstorage functions to be able to store permenant data when turning off the power, it works good with me while writing or reading but when I turn off the power, the data is erased from ... (more)

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Last activity 2015-07-31 13:31:12 +0200 by martial

OTA APP to APP DFU sdk9.0.0

HI People,

I face a problem when I do an OTA DFU from APP to APP. I compiled ble_app_hrs S110_with_dfu example fro sdk 9.0.0 and did OTA dfu. Now the device advertises in normal application mode as Nordic_HRM ... (more)

32
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1
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1
answer
Last activity 2015-07-31 12:55:49 +0200 by pabigot

HFCLKSTART blocks changes to LFCLKSRC

Using a nRF51822-QFAC-A1 on the nRF51-DK I noticed unexpected behavior when starting the HFCLK and LFCLK in rapid succession. This variant reproduces the problem at startup:

NRF_CLOCK->TASKS_HFCLKSTART = 1;
NRF_CLOCK->LFCLKSRC = CLOCK_LFCLKSRC_SRC_Xtal;
while (! NRF_CLOCK->EVENTS_HFCLKSTARTED) {
}
NRF_CLOCK->TASKS_LFCLKSTART = 1;

With this ... (more)

18
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1
vote
1
answer
Last activity 2015-07-31 12:53:07 +0200 by Gavroche

MasterEmulator constructor throws JLink HCI Instantiation exception

Hi, I'm trying to get my nRF51 code (which works on my dev machine) to tun on the test server (both Win7). Am using MasterEmulator 2.1.10.8567

The dongle itself is happy on both machines (i.e ... (more)

21
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votes
1
answer
Last activity 2015-07-31 12:38:55 +0200 by trananh

Error when bootloader with Master Control Panel

Hi,

I 'm using MCP v3.9.0.6, softdevice v7.2.0 and pca10003 board.

After load bootloader program to board. I use MCP to load application for it. In MCP, I choose device dfu_targ, connect, discovery services, and ... (more)

21
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votes
1
answer
Last activity 2015-07-31 12:28:01 +0200 by Aryan flag of Norway

How to write value on Serial nrF51822

Hello I am new to this platform, can anybody tell me how to write the value on serial in NRF51822 and what is the command through which i can write the value on serial. getch() command is not working neither ... (more)

36
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1
answer
Last activity 2015-07-31 12:10:36 +0200 by Petter Myhre flag of Norway

One peripheral to multiple Central Connection requirement

Hi All,

I need to implement a kinda a mesh network of Nordic device nodes placed nearby to act as a relay, for that I have a use case where following requirement.

  1. One Peripheral to multiple central device connection.
  2. MTU ...
(more)

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