# 10,596 questions

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## what does error code 0x20 means

each time I start my program (nrf51 device) I get an error code I save in flash to check it at next restart. I can read error code 0x20 is this a correct error code and what it means?

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## Tickless FreeRTOS in SDK 10.0 + App_Uart

I am testing the freertos port, based on the hrs example in the new SDK 10.0. I have run into an issue while using the uart during long transmission sequences (where the fifo is filled). It appears that the ... (more)

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Hi,

I want to advertise multiple UUIDs, one after another

Do I have to stop advertising, or is there a way, that I can update the struct in the background?

Currently we do it the following way:

  for ever {
ble ...
(more)

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## How to program 1000x nrf51822 for big run scale.

Hi,

I made my prototype board using the nrf51822 chip. for this prototype i use an on-board connector + external programmer to flash the nrf51822 chip.

that's work fine but i'm planning to make a big run of 1000 ... (more)

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## Best solution for programming Softdevice/Bootloader/Firmware to multiple nrf51822 from one PC.

Hello,

I am almost finishing developement of a BLE module using nrf51822.

For mass production, I hope I can program Softdevice/Bootloader/Firmware to 10 nrf51822 using one PC. (since on my PCB array, there are 10 single boards)

Using ... (more)

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## nRF52832 ICSP / Jtag

Hello there,

Is there anyway I can program the chip without the PCA10036? I want to add the nRF52 in one PCB I am designing, but would also want to be able to program it on the go, maybe with ... (more)

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## Program nRF52832, without the development board

I am looking ahead to the time when I will graduate from using the nRF52 development board to building a custom device with the SoC. The PCA10036 chip will obviously not be on our custom board. We will need to ... (more)

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Hi, I'm missing any examples, or code snippets, about the new SAADC on the nRF52 for the PCA10040. Have you something?

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## nrfjprog command on linux gives ERROR: JLinkARM.dll load failed. Try again. If it keeps failing, please

Hi,

I am using nrfjprog package installed in folder /opt/Nrfjprog. I am getting the fallowing error.

I ... (more)

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## What EXACTLY I need to do to include DFU feature for my application

So, I am having a nRF51822 application that I used to upload via wired interface. Now I want my application to support so called DFU over BTLE, enabling software upload from nRF Toolbox. I am using S110 soft device. Also ... (more)

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## nRF52832 Current Measurements

Hello,

We recently received an eval kit the the nRF52832, but we were told not to take current measurements with this version. This presents a problem since we are evaluating this chip and need to have a better understanding of ... (more)

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## how to change the lenth of UUID

Hi: i use ble_app_uart project and want to change the UUID lenth(128 bit) to be 32 bit;but i change "nus_base_uuid" to be 4 byte and change "uuid128[16]" to be "uuid128[4]";but uuid is not be changed ... (more)

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## Using GPIOTE with S130 in the BLE UART example

I've been using the ble_app_uart example with S130 on a nRF51 DK board. I wanted to add an interrupt with some GPIO pins. So I added GPIOTE interrupt handler but the compiler returned an error:

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## How big is the event buffer of the SoftDevice

Hello,

I am using am using sd_ble_evt_get and sd_app_evt_wait in an endless loop for handling all incoming events. If I block this loop from executing, I'd expect that some events are lost at one point. So my question is ... (more)

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## BLE Central tutorial not connecting to my peripheral

The BLE Central tutorial (S130 based) does not connect to my peripheral. My peripheral connects fine to the Android MCP and the 128-bit service UUID is what I expect.

I'm debugging the Central code and looking at the BLE_GAP_EVT_ADV_REPORT ... (more)

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## nRF52832: UARTE initialisation error

The Nordic UART code was built for the UARTE using the following definitions:

# define UART_LEGACY_SUPPORT 1

When the code is run the NRF_ERROR_BUSY error occurs in the "nrf_drv_uart_rx" function when it is called by ... (more)

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## Using Nrf51422 as I2C(TWI)

Hello

I have an problem using I2C on my custom board which uses an Nrf51422 SOC. I have an RTC chip connected to it and I have no idea how to use your libraries.

The rtc 7 bit slave address ... (more)

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## DFU Timeout and Failed to open transport backend

I'm using nRF51422 with SDK 9.0.0 and S310 ver 3.0.0. First, I program softdevice and dual bank bootloader by nRFgoStudio. After that it is possible to program my application to blank area by OTA with ... (more)

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## nRF52832 PCA10040 PWM

Hi, I try to generate a PWM signal on PCA10040 with the nRF52832. To do that I copied the code from the Product Specification into my application, but nothing comes out.

Have someone an idee, why?

uint16_t PWM_CH0_DUTY = 8000;
uint16_t ...
(more)

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## RTX tiny and power on of NRF24LE1

Hello to everyone. I write code for NRF24LE1 using KEIL and rtx tiny. But i have some problems.

When i power on my device, programm don't run correctly, but when hard reset everythink works good.

right down is my ... (more)

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## low power pulsewidth measurement: PPI & lfclk & S210 - some guidance needed

Dear all,

I need to measure a pulse width on a GPIO pin which is in between 100mseconds and 7.2 seconds long without the use of "regular" timers due to low power requirements. I am pretty sure this can ... (more)

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## App-Error 0x3004

Hi

I want to receive and send a lot of data in a short time (connection Intervall is set to 20ms). And I get the App-Error 0x3004.

I found this definition for the error:

#define BLE_ERROR_NO_TX_PACKETS          (NRF_ERROR_STK_BASE_NUM+0x004) /**< Not enough ...
(more)

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## PSPICE Model files

Hello Everyone,

i am trying to simulate the circuit using Proteus so can anyone tell me where can i find the Pspice model files for the Nrf51EVB is it available? any suggestions or ideas will be helpful for me

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## Hardfault after debug pause and start(NRF52, S132-SD-v2)

We have used the first version of the S132 softdevice with the Engineering A version of the nrf52 chip. Now with the newer Engineering B version, we have moved to the second version of the S132 softdevice. Since this version ... (more)

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## nRF51822 Bluetooth Smart beacon receiver

Can I place the Smart Beacon into a receiver mode?

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## Health Thermometer not working

Hi,

I'm new with a) the Nordic Softdevice environment and b) using the nRF52. So there are a few questions...

As a starting point I've used the template project (...\SDK\nRF52_SDK_0.9.2_dbc28c9\examples\ble_peripheral\ble_app_template) and added ... (more)

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## Environmental Sensing service

I have a queston for softdevice S130 example about Environmental Sensing service.

I readed spec. but I can't find out any ESS profile example in SDK. Is SoftDevice S130 really include this profile?

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## More Secure NFC pairing

Hi,

I've been playing with NFC on nRF52. It sends "Security Manager TK Value" over NFC. There is currently no option to use LE SC over NFC in examples, which is to send "LE Secure Connections Random Value", and ... (more)

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## nRF24L01+ PA

Hello! Until now I am using a nRF24L01 with johanson balun (2450BM14A0002) and MIFA. I want to add a power amplifier to my nRF24L01 project. Can anyone give me advice which power amplifier should I use? Can I use a ... (more)

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## Interfacing PA with nRF51822

Hello,

I would like to know whether the below PA can be interfaced with nRF51822? For our application we need to increase the power of the BT. so I have selected the below PA from skyworks, 1. SE2431L- can this ... (more)

#### Statistics

• Total users: 6988
• Latest user: tuxscreen
• Resolved questions: 4880
• Total questions: 10596

## Recent blog posts

• ### New features in nRF52

Posted 2015-11-26 16:12:11 by Aryan
• ### nRF52 Series is Ready for the Next Generation of Bluetooth®

Posted 2015-11-19 14:32:14 by Pelle
• ### Intro to ShockBurst/Enhanced ShockBurst

Posted 2015-11-08 05:01:31 by Daniel
• ### Quick Link Test for PCBA with Nordic chips

Posted 2015-11-16 02:20:32 by John So
• ### nRF5x-Tools and nRF5x-Pynrfjprog Includes Linux and Python 3 Support

Posted 2015-10-27 11:31:41 by gamnes

## Recent questions

• ### what does error code 0x20 means

Posted 2015-12-01 15:35:19 by makouda
• ### Advertizing multiple UUIDs (iBeacon)

Posted 2015-12-01 15:32:50 by tuxscreen
• ### nRF52832 ICSP / Jtag

Posted 2015-12-01 15:08:24 by Daniel Andrade