# 1,303 questions

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## spi master example code

hello , I am new to SPI protocol.I am using NRF52 DK &nRF5_SDK_13.0.0_04a0bfd( pca10040) using keil-5. I want spi master example code. Can any one suggested me where I find the spi master example code, Because I have ... (more)

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## Pairing and Bonding Question

Hello,

In my application, a peripheral will be connected to many central devices, and the application includes buttonless dfu service.

It needs pairing (encrypted connection) but no bonding.

nRF52832, SDK12.2.0, s132

The settings in my project are listed ... (more)

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Hi there,

The S132 SoftDevice for the nRF52832 has grown in size from 0x1F000 for release 1.0.0-2.alpha, to 0x23000 for 5.0.0-3.alpha. It appears that the nRF52840 will start using a new S140 SoftDevice.

Currently ... (more)

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## [SD Card] Sharing SPI pins sdcard

Hi,

I'm trying to use the nrf52832 with a sdcard application in SDK_13. I based my code on the example provided and managed to get the sd card working without any problems.

However I am now trying to get ... (more)

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## Capacitance reading circuit for nRF51

Currently, we are trying to have the nRF51 chip working with a type of capacitive pressure sensor. We did quite a lot of work on searching proper circuits of reading the capacitance of the sensor, including capacitance voltage divider, charging ... (more)

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## bond with device returns Error 22 (0x16): GATT_CONN_TERMINATE_LOCAL_HOST

using nrf52832 and sd3.0.0

as used secureDFU update sd is not so easy.

also checked https://devzone.nordicsemi.com/questi...

void data_len_ext_set(void ...
(more)

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## dim led to minimize current consumption

Hello, I am using nrf52832 custom board, with SDK 11.0.0 and s132_nrf52_2.0.0 and trying to dim led. It seems the only suggested solution is to use the pwm driver. I was wondering if there are any ... (more)

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## nRF52 reset behaviour on GPIO output pins

Hi. I have a board here based on the nRF52832, using SD 132 and SDK 13.0.0, with a modem on it that I'd like to keep powered on even when the Nordic is in system off mode ... (more)

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## Gazell data lag when more than 1 device is connected

Hi! I am fairly new to programming micro controllers so apologies if I ask many questions. I am using NRF52832. The situation is this - I have 2 devices and 1 host . After receiving data the host then sends data via ... (more)

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## PDM working example

hi, Is there any working PDM example for nRF52832? or can anyone give a sample initialization code for PDM with easyDMA using the inbuilt nrf_pdm_drv functions?

Regardss, Vishnu

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## fstorage not initializing properly in my app

I want to store two floats and one 8 character string in fstorage.

I solved it by using 4 uint32 types stored in flash, I got it working in the ble_app_template example, but when I try to implement the same ... (more)

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## UART not working on SDK 13.0.0

Hi. When i use ble_app_uart i have problem with my device over uart. It does not response to my commands.

I'm using custom pcb based on nrf52 with nrf UART v2.0 android app. Is there something i'm missing?

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## Does SD_MBR_COMMAND_INIT_SD command writing in flash?

Hello, My application perform reset periodically. When It does a reset the bootloader need to initialize the softdevice with SD_MBR_COMMAND_INIT_SD before calling sd_softdevice_vector_table_base_set() function or an error is trigged (0x1 : NRF_ERROR_SVC_HANDLER_MISSING).

I would like to not write in flash at ... (more)

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## Framing errors

Hi Team,

I am using nRF5_SDK_11.0.0_freertos_dfu_060516.zip SDK. I have added NUS service with UART configurations in this code successfully. When I am commented the DFU from Makefile, uart communication working good. As soon as I Uncommented DFU ... (more)

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## how to set the mqtt broker address in nrf5 iot sdk mqtt example

static const ipv6_addr_t m_broker_addr = { .u8 = {0x20, 0x01, 0x0D, 0xB8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01} };

In the above how do i set the ipv6 address which is C2:98:AB:01:42:C1?

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## FTU OTA Failed.

I am new to nordic ble chips. I am using nrf52832 ble chip, s132_nrf52_3.0.0_softdevice I am trying to update firmware on the air. But I am getting an error that I do not understand. I have attached the ... (more)

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## Is only a single async UART supported on the NrF52 832/840 devices?

Is only a single async UART supported on the NrF52 832/840 devices?

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## VL53L0X + Interrupts

I'm hoping someone here is familiar with the VL53L0X setup on a NRF52 board. I was able to get the single range measurements working just fine using polling and now I want to take it to the next level ... (more)

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## nRF52 battery monitor

In the ULP Wireless Q magazine (edition winter 2016), on page 12 / 13 there is listed that the nRF52 chips have a Battery Monitor peripheral but I cannot find anything about it in the product specifications. Do you have more ... (more)

35
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1
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1

Hi Nordic Team,

I am using board PCA10040 wtih nRF52832 SDK 11.

I have Added DFU code to ble_app_hrs_freertos example. Once I will go for DFU from nrf Mobile Application, nRF board is not jumping to bootloader. I am using ... (more)

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## Proximity Profile (Battery Measurement) not updating when SAADC LP mode Enabled

I am using SDK 12.2.0 with soft device s132 3.0.0 using NRF52 Development Board(PCA10040).

I want to update Battery level to central device/APP.As i want to use code for my custom Board i ... (more)

134
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## Have I damaged my nRF52832 Dev Kit?

I have been analyzing the current consumption of my nRF52832 dev kit today using both a multi meter and an oscilloscope with a resistor. I'm not sure what I exactly did that lead to this, but now my board ... (more)

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## Managing nRF52832 with a 3,7V Li-Po-battery

Hello,

I am currently evaluating concepts on how I can power my nRF52832-custom-board with a LiPo-battery, in order to get a good tradeoff between lifetime and form-factor.

First of all, I came across this topic here, that states to never ... (more)

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Hi,

I recently migrated our code to the SDK 13 (we use the nrf52832) and now the function:

uint32_t err_code = ble_radio_notification_init(6, NRF_RADIO_NOTIFICATION_DISTANCE_5500US, on_ble_radio_active_evt);
APP_ERROR_CHECK(err_code);


Returns error code 8... I can't find any example or similar so I ... (more)

154
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## freertos RTC issue in port_cmsis_systick.c [closed]

Hello,

Ported my FreeRTOS application on NRF52 from SDK 12.2.0 to SDK 13.0.0 .My application is using freertos apptimer for timestamping and waking up of device which was working without any issues on SDK 12.2 ... (more)

47
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## How to detect if BLE is transmitting or not.?

Hello there,

We are using nRF52832 custom board. I2C and GPIO are working on it. Then I uploaded BLE program (which is tested on nRF52-DK) but BLE is not showing up at all. We are using PCB-printed antenna of length ... (more)

92
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## Sleep current with GPIOTE enabled

This test program is modified from examples\pin_change_int\main.c, I add the instructions to put the cpu to sleep. And I add nrf_gpio_input_disconnect() for all the pins except BSP_BUTTON_0 and BSP_LED_0. Everything else remains as original example.

int main ...
(more)

82
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## Is there a simple example how to set a PWM driver?

Using SDK13 with nrf52832 , I was looking for hours how to set up a simple PWM signal.

1. I don't want to use the example, it's a huge mess, it's not clear and you can't find a ...

(more)

52
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## nRF52 minimum reset hold time

Hi

What is the minimum hold time for a pin reset with the nRF52832? I didn't find it in the product specification.

Kind regards

28
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## Minimum pulse length to detect low level with GPIO SENSE for nRF52

Hi all

What is the minimum required length of a LOW pulse to be detected by the nRF52832 via GPIO SENSE mechanism? I couldn't find it in the product specification.

I want to wakeup the nRF with a LOW ... (more)

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## Recent questions

• ### nrfutil application version

Posted 2017-05-24 07:11:21 by goldwake
• ### spi master example code

Posted 2017-05-24 06:15:44 by pavanvulichi
• ### Pairing and Bonding Question

Posted 2017-05-24 05:48:46 by sara
• ### How to expand the flash memory address?

Posted 2017-05-24 04:51:42 by tovax
• ### code of protocol stack which part of the Protocol I can modify?

Posted 2017-05-24 04:37:17 by desongli