# 85 questions

Tagged
• x
45
views
no
1

## unexpected SWI during softdevice startup

We are using a custom board with softdevice S132, sdk14, and freertos and ana nrf52832.

Our ble_app does:

1. init gpio put up a splash screen via a display on spi
2. initializes twi and does writes to it to turn on ...
(more)

23
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no

## porting SDK13 ble hids app to SDK14

I'm experiencing issues when porting a working app based on the BLE HIDS examples from SDK13 to SDK14. I now basically rebuilt the application from the SDK14 hids keyboard example, but I had to make a few changes to ... (more)

25
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no

## anyone having problem with the APP_TIMER in SDK14

When using the APP_TIMER in SDK14 I am having a problem with the application stopping. I was using the APP_TIMER to flash LEDs and watch for timeouts in SDK13. when porting the code to SDK14 I am having a problem ... (more)

32
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no
no

## Drivers from nRF5_SDK to Mesh SDK

Hello,

I would like to add the ST7735 driver from the nRF5_SDK to the Mesh SDK along with the necessary components (SPI,..). I copied the entire components directory to my Mesh SDK. But I have an issue with the cmake ... (more)

24
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no

## SEGGER_RTT_CONFIG_DEFAULT_MODE blocking app

If SEGGER_RTT_CONFIG_DEFAULT_MODE is "BLOCK", the program won't start without RTT attached - at least for me... is there a possible solution? I mean, technically it makes sense, because the buffer is never flushed without RTT Logger attached, but as we ... (more)

34
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no
no

## Custom service Characteristic write wrong handle on Samsung

Hi

We have problems with Samsung tablets and phones at the moment.

We have an application with two custom services, Secure DFU Service and some standard SIG services, i.e. Battery Service and Device information Service. We are using nRF52832 ... (more)

23
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no
no

## Updating Characteristic User Description in BDS generated code

Hi, I am trying to determine if there is an error in the generated code or if I am not performing the actions correctly. I am trying to Update Characteristic User Description value in Bluetooth Developer Studio generated code.

I ... (more)

42
views
no
1

## fstorage page info

I am attempting to integrate examples/peripheral/flash_fstorage into my project (SDK 14.1.0).

When calling nrf_fstorage_write I get NRF_ERROR_INVALID_LENGTH in response. I assume because I am only trying to write 20 bytes not ~2K. However, for some reason ... (more)

30
views
3
1

## Using NUS/CTS/BAS together

Hey guys,

I'm using the SDK 14.0 on my nRF52832 with the SoftDevice 132, my IDE is Keil.

And I merged the ble_app_uart example with the ble_app_cts_c example and the ble_app_proximity example from the SDK.

If I start ... (more)

197
views
no
1

## What is system on mode

Hello, I used translation software.

I enter system on mode from the power_manage of the function.

But I do not understand system on mode.

In the system on mode is it a mode that transitions to low power consumption with ... (more)

38
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## How to Low power consumption UART

Hello,

I want to enable UART only when data transfer is necessary.

I am using nrf 52832 and sdk 14.0.0. I am using "ble_app_uart".

I could not find the answer I wanted. Thank you in advanced.

64
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no

Hello,

I want to enable UART only when it is necessary to send data.

I want to use ble_app_uart_low_power_master or ble_app_uart_low_power_slave

The URL of ble_app_uart_low_power_master and ble_app_uart_low_power_slave are https://github.com/NordicPlayground/n... .

How do I change the source code ... (more)

41
views
no
1

## Single Notify Enable for Entire Service

I have a peripheral device with a custom service with 3 characteristics all of which send data to my central via notification. I've supplied each characteristic metadata with cccd_md and have 3 booleans in my service structure to enable ... (more)

60
views
no
1

## DFU migration to 14.1

I have a bootloader compiled from SDK 14.0, and when I try to upgrade to 14.1, the new linker script (secure_dfu_ble_gcc_nrf52.ld) does not contain the UICR_BOOTLOADER memory region nor the sections that write the values there, so ... (more)

101
views
no
1

## GFX Library

I don't quite get how this works from the documentation and examples provided, i have a display not yet implemented in your drivers, but I have written my own which just transfers a buffer from RAM in the MCU ... (more)

95
views
1
vote
1

## How to reach nRF52840 UARTE current supply specification ?

Hi, I work on the nRF52840-Preview-DK board. I try to make a ble to uart bridge and I start with the nRF5 SDK 14.0.0 ble_app_uart example.

I compare the current supply of the example and the same code ... (more)

24
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no

multirole lesc timeout issues

HW: 4 x nrf52840 DPK boards SW: 3 x PDK running ble_app_hrs 1 board running multirole, lesc, freertos w/ 4 task, mtu,

Reset multirole PDK w/ button 2 down (delete bonds) w/ all 3 peripheral board ... (more)

61
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no

## low power delay implementation

Hi, I built my app on the ble_app_uart peripheral example. I am looking to replace nrf_delay_ms(ms); with a low power alternative, I figured a function with loop on power_manage(); and a one shot timer clearing a flag would do ... (more)

73
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no
1

## nRF52832 SDK14 - SAADC calibration issues

I'm using the nRF52832 with softdevice s132 and SDK14 with ARM GCC

I'm trying to set up the SAADC peripheral to read battery voltage, and I can get everything working as expected except periodic calibration. At boot, I ... (more)

187
views
3
no

## LFCLK related issues in SDK14 DFU

In SDK13, the initialisation of the low frequency clock used to be done within sd_softdevice_enable. In the SDK14 version of nrf_dfu.c, the LF-clock is already initialized in nrf_dfu_init before the softdevice is started.

1. It would make sense to start ...

(more)

18
views
no
no

## About measurement of current consumption

Hello,

I used translation software.

I am measuring current consumption.

I supply it from an external power source.

I connected the SB 12.

After that, I supplied it using P21.

As a result, electricity did not flow in the board ... (more)

65
views
no
no

## How to enter sleep mode

Hello,

I used translation software.

I am transferring test data from nRF52832.

I want to down the average current consumption in data transfer.

I am currently trying to sleep mode.

I always want to sleep at times other than data ... (more)

48
views
no
no

## UARTE framing errors at low temperatures?

Hello,

i'm using an nRF52832 as a Bluetooth to UART bridge, similar to the APP UART example. Another controller (Cortex M7) is connected to the UART. I'm using UARTE with EasyDma and, because i have telegrams with variable ... (more)

46
views
no
1

## Automatic control of mode (LDO and DCDC)

Hello, I used translation software.

I used the function to enable DCDC mode I used sd_power_dcdc_mode_set ().

I want to use the optimal mode for power supply voltage. I want to automatically control the mode with the value of the power ... (more)

76
views
no
1

## How to covert APP_TIMER ticks to MS

I am trying to record the time on nRF52840 with s140 softdevice. I used APP_TIMER to setup the TIMER and app_timer_cnt_get to get the count. And then uint32_t app_timer_cnt_diff_compute(uint32_t ticks_to, uint32_t ticks_from); to get the ticks for the time ... (more)

57
views
no
2

## FDS_ERR_RECORD_TOO_LARGE

Hi Nordic,

I used FDS to operate updata to update data more than 10K once, but there was an error. Hint FDS_ERR_RECORD_TOO_LARGE.Can FDS operate more than 10K data at once?

How do I solve this mistake?

46
views
no
1

## Connectivity android(bt 4.0) with nrf52832(sd s132v5).

Hello.

I have some questions. Is it possible stabile work of android device, that has bluetooth 4.0, with nordic device on base softdevice s132 v 5.0? What should i read, if i want to do it?

My first ... (more)

46
views
no
1

Hello,

I used translation software.

I am measuring current. I want to enable dc-dc mode. how to enable the dc-dc? also,where should I change the source code?

I am using nrf 52832 and sdk 14.0.0. and i ... (more)

35
views
no
1

## APP_TIMER in sdk v14 build errors when migrating from v12.3

Hello I am using PCA10040, nRF52832, and GCC toolchain

I have a project that was working good using sdk v12.3 but now I want to migrate to the latest and I am getting one particular error I have not ... (more)

69
views
no
1

## Type 4 tag NDEF record update

Hello,

i am working with SDK 14 type 4 tag library on NRF52832 hardware. I've based my code on the example "writable ndef msg".

When receiving a record, the NFC handler assumes, that NLEN is first updated to 0 ... (more)

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