723 questions

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14
views
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no

RTC issue in port_cmsis_systick.c

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)

18
views
no
no

button interrupt with long push

Hello, I am using nrf52832 custom board, with SDK 11.0.0 and s132_nrf52_2.0.0, and trying to create an interrupt event on wake up from system off by pressing BSP_BUTTON_0 (only one button available). Following the nrf51-powerdown examples ... (more)

48
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still no flash events general

Hello,

I meet the same problem with the question "Status bit for sd_flash_write()".I have register my flash_nrf52_sys_event_handler() in sys_evt_dispatch(),but after sd_flash_write() still no NRF_EVT_FLASH_OPERATION_SUCCESS or NRF_EVT_FLASH_OPERATION_ERROR happened.And I had confirm that data has been written to the ... (more)

44
views
no
1

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)

281
views
1
vote
2

Transfer more than 255 bytes with SPI master on nrf52

Hi everybody,

I am trying to read a 1024 bytes FIFO buffer from an IMU (Bosh BMI160) using the SPI master driver on nrf52832 and sdk 12.2.

I know others had the same problem and I've read the ... (more)

36
views
1
vote
1

Memory settings for working with rigDFU (Rigado BMD-300)

Good evening (at least here...)

I successfully developed an application with Keil on the Rigado EVAL board with the following steps:

1. nRFgo Studio -> erase all and program SoftDevice S132 (memory range: 0x0 - 0x1F000)
2. Keil uVision -> develop a project from example ...
(more)

29
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no

nrfjprog --family nRF52 --eraseall ERROR

Hello,

I am trying to start nrf52832, when i try to program S132, i stuck in the first step. i am following the tutorial: https://devzone.nordicsemi.com/tutori...

here is my information and errors:

C:\Users\Administrator>nrfjprog --version ...
(more)

26
views
no
1

nRF52 as a DFU central

I can update firmware in my nRF52 nodes using DFU where on the other end I have Android phone or nRF Connect (PC/Windows)+PCA10040. Everything works fine. But in my application I want to use nRF52 based node ("central ... (more)

40
views
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Good development flow from Example to production application

I would appreciate some suggestions on a good development flow to go from an Example to end application

I have nrf52832 on a custom PCB. I tested several sdk13.0.0 examples with 10040 and s132 I worked through the ... (more)

29
views
2
1

Hi,

I would like to set up simple bootloader that initializes COMP module and waits for proper voltage on analog pin to show up, then launch BLE application.

Is there any barebone bootloader example to start or documentation available?

Using ... (more)

43
views
1
vote
1

What is the passkey for gls example, where is it set

What is the passkey for gls example, and where is it set

I am using SDK13, 10040 nrf52832 s132

Any help appreciated

34
views
1
vote
1

hex file generated using eclipse not working on nrf52 dk

Hi All

I am trying to build hex file using eclipse id on Mac. everything looks ok, as it eclipse build file without any error but its not working on nrf52 dk.

before installing I did erase all on nrfgo ... (more)

26
views
no
1

sd_ble_uuid_encode() return NRF_ERROR_INVALID_PARAM

I aslo read other question about sd_ble_uuid_encode.
But my problem is different from it.

I use nrf52832 and DK board.

I made my application from ble-app-template.

I succeed setting following custom UUID service.

#define LOCAL_SERVICE_UUID              0xFFE5

...

static const ble_uuid128_t m_base_uuid128 ...
(more)

26
views
1
vote
1

In the BLE Characteristics, a beginner's tutorial

Martin mentions: Since this is a beginners tutorial we will keep it simple and leave the doors wide open. No security, encryption, or passkey needed.

Is there an example to add security ... (more)

55
views
3
2

I can remove the //char_md.char_props.write = 1; and only the Read and Notify Properties show up in MCP (or the iPhone)

When I comment out the char_md.char_props ... (more)

27
views
no
1

Is it possible to have passkey with Just Works bonding

I noticed some suggestions to add Static Passkey.

I have 10040 nrf52832 sdk13.0.0 s132

The server has no IO, so cannot enter passkey from it. 1) Is there an example to add PIN to the server, even though ... (more)

39
views
1
vote
2

FDS save under same id and key

Hey, I want to save stuff to flash under the same id and key which should be no problem as shown in the documentation. But when I save it and retrieve the data only the last saved data is in ... (more)

55
views
2
1

Frequency hoping sequence - is it really random?

In my application many nodes (acting as centrals) will start simultaneously, as they have common power supply. I am using s132 SoftDevice (4.0). Is the frequency hoping sequence initalized with true random value (how? when?), or is it fixed ... (more)

44
views
1
vote
2

how to flash NRF52DK under ubuntu

Hi, I am using NRF52 DK board. I use nrfjprog under windows to flash controller. But i want to flash under ubuntu. I searched but i found one .rar file.i extracted but there were not executable to run. some ... (more)

104
views
1
vote
1

[CLOSED][nrf52832][S132 4.0.0] connection fails: exchange MTU request is not received on evt.common_evt.conn_handle=2

Configuration:

(1) 52832 PCA10040;(2) softdevice: s132_nrf52_4.0.2; (3) sdk 13.0.0(4) 52832 configure 4 conccurent peripheral connections:

ble_cfg_t ble_cfg;
memset(&ble_cfg, 0, sizeof(ble_cfg));
ble_cfg.gap_cfg.role_count_cfg.periph_role_count  = 4;
ble_cfg.gap_cfg.role_count_cfg.central_role_count = 0;
ble_cfg.gap_cfg ...
(more)

75
views
no
no

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)

43
views
no
1

Secure DFU - Issue in updating the application. [closed]

Hello, I am trying to implement OTA firmware update using Secure DFU.

SDK - 12.2

Softdevice - s132

Board - PCA10040 (nRF52)

I followed instructions mentioned here

Issues:

• Able to connect ...

(more)

51
views
no
2

I need to add connectable beacon advertising data instead of normal advertising for proximity profile example (NRF52 DK -> PCA10040 ->S132 -> nrf52832).During Advertisement it should show beacon data and in connected state it should stop.

I tried of doing ,but ... (more)

22
views
no
1

GPIOs are not reset after DFU

Hi,

We had a power issue with our custom board related to DFU updates. After performing a DFU we were seeing 8mA idle current, and when we had programmed the firmware directly with the JLink Flasher, we were seeing ~500µA ... (more)

51
views
1
vote
1

TWI Stuck Bus Recovery

What is the best method for attempting to recover from a stuck TWI bus after init?

I am currently initializing the TWI instance with .clear_bus_init=true but this only happens once during the init.

For example in the past we ... (more)

26
views
no
no

making Tune instead of Beep using Bizzer with PWM library

i have added pwm into proximity profile example and now i am able to make beep using buzzer with pwm library.Now i want to make some sort of Tune instead of beep.

Can any one help!....Thanks.

82
views
1
vote
3

Help with restarting, debugging and size-limitations for DFU procedure needed

Hello,

while I already managed to solve a couple of problems regarding a proper handling of the DFU procedure in my previous topic here, there are still 3 problems that remain where I could use some help...

1) How can ... (more)

106
views
no
1

Use C++ with Nordic SDK (nRF52 series)

Hi, i wrote a lot of firmwares for nRF51x22 using C language and they works fine. Now we passed to nRF52 series and we want to use C++ (preferibly C++11) that is more readable, ordered etc... but i got ... (more)

38
views
1
vote
1

Is a delay needed between Characteristic updates

Is a delay needed between Characteristic updates

I modified the ble_sdk_app_proximity example. I added x3 services, based on the BLE Characteristics, a beginner's tutorial, and it seems to be working fine. (nrf5-ble-tutorial-characteristic-CompletedCode ported for SDK 13.zip)

The timer ... (more)

74
views
2
2

Setting MTU Above 64 bytes Crashes ble_app_uart

Hi all,

I am trying to send a large stream of bytes(60kb) to an NRF52823 using bbowl. BBowl exposes the uart through a TCP socket connection using noble.

I modified the gatt_init code in SDK13 to support the largest ... (more)

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Recent blog posts

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• Monitor Mode Debugging with J-Link and GDB/Eclipse

Posted 2017-03-29 05:56:12 by Daniel Veilleux
• Getting started with Nordic's Secure DFU bootloader, a step by step guide

Posted 2017-03-20 17:13:52 by Hung Bui

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