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27,162 questions

34
views
3
votes
1
answer
Last activity 2017-11-20 15:46:11 +0200 by Torbjørn Øvrebekk

Do interrupts needs to be disabled before erasing / writing flash?

The NVMC documentation states the CPU is halted while the NVMC is writing or erasing flash. If the CPU is halted, then interrupts shouldn't need to be disabled during flash operations, correct? I'm asking because other micros will ... (more)

28
views
no
votes
1
answer
Last activity 2017-11-20 15:40:44 +0200 by Joakim Jakobsen flag of Norway

nRF51822 ,cannot find headers which were involved in imported into keil5

image description image description as this screenshots show, i add some headers to nRF_Libraries, and add the directory of the folder nRF_Libraries to Options for targets /c++/include paths,but after building project,I cannot open the header , e.g. boards.h by rightClicking ... (more)

24
views
no
votes
no
answers
Last activity 2017-11-20 15:40:29 +0200 by omar

time counter

Hi everybody !! i m working in a project with NRF52 SDK 11, i need a help, i want to create a funtion that working with RTC to count a tick and to convert it into time then reset the count ... (more)

91
views
1
vote
1
answer
Last activity 2017-11-20 15:24:23 +0200 by John Leonard

ARM University Program IOT for Nordic

i found this link on nordic website to learn ARM with Nordic SOC. https://www.nordicsemi.com/eng/Produc...

Do you know where is the link for this learning course, the link provided on page does not go to the ... (more)

63
views
no
votes
1
answer
Last activity 2017-11-20 15:05:52 +0200 by Krzysztof Chruściński

UART HW flow control bugs

I have an nrf52832 connected to a UART-USB driver with RTS/CTS. CLI manages the UART connection. Using SDK 14.0.

When HWFC is enabled, if a serial connection is NOT established immediately, the scheduler library overflows with tasks causing ... (more)

34
views
no
votes
1
answer
Last activity 2017-11-20 14:57:07 +0200 by AmbystomaLabs flag of United States

nrf52 SAADC, ADV

Hi,

I am trying to use the SAADC via ble when noridc is connecting with other device and adding value to advartasing. This is my code but i've got some problems.

1) SAADC

AFTER EDIT

void saadc_callback(nrf_drv_saadc_evt_t const ...
(more)

109
views
no
votes
1
answer
Last activity 2017-11-20 14:51:18 +0100 by Bjørn Kvaale

MPU9250 with PWM logic

Hello friends,

i am new to embedded programming and trying to learn the new things in embedded for this i am doing 1 project in which i am using mpu9250 with pwm.

is it possible to glow 4 different LEDs ... (more)

48
views
no
votes
2
answers
Last activity 2017-11-20 14:35:16 +0200 by Torbjørn Øvrebekk

How to configure interrupt on gpio pin to detect button state.

Hi Team,

I am using sdk12.2.2 and nrf52. I want to use one gpio to detect button state & have to operation on that event.

I used one method to configure(code snippet written below)

nrf_drv_gpiote_in_config_t in_config = GPIOTE_CONFIG_IN_SENSE_TOGGLE(true ...
(more)

837
views
no
votes
2
answers
Last activity 2017-11-20 14:26:35 +0200 by Adrien C.

nRF51 DK mbed I2C/TWI

Hi,

I'm currently building a BLE multi-sensors device, with mbed online IDE. I succeed in implementing BLE API, and releasing a first .hex firmware with multiple services and characteristics.

Now, I want to replace my fake characteristic values by ... (more)

39
views
1
vote
1
answer
Last activity 2017-11-20 14:10:09 +0200 by Hung Bui

Softdevice Update Procedure

Hello,

For the softdevice update, is it the responsibility of the bootloader to make sure, that the softdevice was copied correctly?

If for example the bootloader calls sd_mbr_command() and the device powers down during that copy operations. Is it's ... (more)

43
views
1
vote
1
answer
Last activity 2017-11-20 14:08:24 +0200 by Bjørn Kvaale

how to use serial example in mesh SDK?

I get nrf mesh SDK form: http://www.nordicsemi.com/eng/Products/Bluetooth-low-energy/nRF5-SDK-for-Mesh/(language)/eng-GB

I want to use the serial example to control a mesh network, but there are 2 problem for me:

  1. how to use the python ...

(more)

29
views
no
votes
no
answers
Last activity 2017-11-20 14:00:31 +0200 by Quentin

NFC url with ble_stack

Hi all,

I'm working on a implementation of the nfc url to my custom nrf52832 product.

I would like to run the record_url example on my custom application. I made a library which is basically the same code as ... (more)

24
views
no
votes
1
answer
Last activity 2017-11-20 13:49:41 +0200 by Joakim Jakobsen flag of Norway

How to reinitialize advertising ?

Hello, I use nrf51822 , sdk 8.0.0, s110

I defined advertise interval and timeout

#define APP_ADV_INTERVAL                         320              
#define APP_ADV_TIMEOUT_IN_SECONDS      3

Also, I write advertising init function at below;

static void advertising_init(void)
{

   .
   .
   .

    ble_adv_modes_config_t options = {0};
    options.ble_adv_fast_enabled  = BLE_ADV_FAST_ENABLED;
    options ...
(more)

60
views
no
votes
1
answer
Last activity 2017-11-20 13:45:34 +0200 by Sigurd flag of Norway

nRF52840(PCA10056), Using bluetooth in the usbd_hid_generic example

Hi,

I am asking questions through Google Translator. The context may not be smooth.


I am planning one project.

Simply put, the usbd_hid_generic example uses bluetooth.

What does this mean, for example, A: Device / B: Board (nRF52840) / C: Computer / Assume ...

(more)

25
views
no
votes
2
answers
Last activity 2017-11-20 13:40:54 +0200 by max

How to enable watchdog

Hi, I'm a beginner in programming Nordic uC and I would like to know how to enable the watchdog in my application. Are there particular functions to call? Thanks!

18
views
no
votes
no
answers
Last activity 2017-11-20 13:38:12 +0200 by Hayk

Update bootloader

I use nRF52840-Preview-DK PCA10056 v0.9.3, SDK 14.1.0. I would like update bootloader, but i have any problems. I do these steps 1.eraseall 2.program softdevice 3.load bootloader 4.load application 5.load bootloader package ... (more)

34
views
no
votes
2
answers
Last activity 2017-11-20 13:28:07 +0200 by rajeshkumar

IS BLE MESH SUPPORT ARDUINO PRIMO CORE?

Hi All,

I new to BLE, Currently working on Arduino Primo Core. I wonder is there any support or any SDK available for PRIMO CORE to use BLE MESH.

53
views
no
votes
1
answer
Last activity 2017-11-20 12:24:22 +0200 by emdi

fds data corrupted

Hello all,

My project based on NRF52832 SDK13 has some bug I trying to solve. Some users of my product very rarly faces with problem of constantly rebooting NRF52. After some investigations I'm revealed that the bond info sectors ... (more)

13
views
no
votes
no
answers
Last activity 2017-11-20 11:54:19 +0100 by Songplus

ANCS add to S130

I develop ANCS success in S110,but in example ble_app_hrs_rscs_relay of S130 SDK9 .I don't know how to add the ANCS.I find S110 has ble_bondmnngr.c file,but in S130 dosn't exsit,Just find device_manager_central.c file ... (more)

26
views
no
votes
no
answers
Last activity 2017-11-20 11:38:25 +0100 by Stanley

Get log from printf instead of NRF_LOG

Dears, I am developing my application based on SDKv12.0.0. I would like to use "printf" & "app_uart_get"(interrupt routing) instead of "NRF_LOG". Is possible to switch it? What should I do to replace it?

32
views
2
votes
1
answer
Last activity 2017-11-20 11:28:29 +0200 by Jørn flag of Norway

feed line width for NRF52832 custom board

Hello, I am designing a PCB with NRf52832 IC. I have a query regarding the width of the feed line. In reference design files, the width of the feed line is 30mil. I have calculated the feed line with to ... (more)

29
views
no
votes
2
answers
Last activity 2017-11-20 11:23:24 +0200 by Hung Bui

More Data to receive from nRF ToolBox uart

Hello,

I want to receive the More data (>20 bytes) in nrf51822 Board from the nRF ToolBox UART module.

is this possible?

What will be changed to be done in peripheral side? please suggest me....

Thank You

23
views
no
votes
no
answers
Last activity 2017-11-20 11:19:04 +0200 by karthikeyan

mpu_6050 problem

hi, i am using nrf52840. i have downloaded code for mpu-6050 in github but it is available for nrf52832. so i made all the changes in the code to work in nrf52840. but atlast i am getting these errors.

image description

need ... (more)

23
views
no
votes
1
answer
Last activity 2017-11-20 11:00:09 +0200 by kian79

Central Scan Continuously and Peripheral/Beacon Broadcast

Hi all,

I have a use case where I have about 40 buttons that can be pressed anytime. I need know when these buttons are pressed on multiple receivers devices. So every receiver device needs to know the status of ... (more)

11
views
no
votes
no
answers
Last activity 2017-11-20 10:48:49 +0200 by Max

Modify service/characteristic uuid [closed]

I am working on blinky example and want to modify service/characteristic uuid. I do that in ble_lbs.h as follows:

//#define LBS_UUID_SERVICE 0x1523

define LBS_UUID_SERVICE 0x1526

//#define LBS_UUID_BUTTON_CHAR 0x1524

define LBS_UUID_BUTTON_CHAR 0x1234

I can see the modifications in advertising ... (more)

18
views
no
votes
no
answers
Last activity 2017-11-20 10:38:09 +0200 by Motti Ng

esb handler crash

I am trying to use ESB and BLE concurrently on NRF51822 SDK v11 SD130.. The BLE part is working fine but the ESB part keep causing error randomly. I put a break-point in app_error_handler and found that this is related ... (more)

53
views
1
vote
1
answer
Last activity 2017-11-20 09:14:54 +0200 by Ceow

PCB antenna and J1 connector

Hi all,

I'm trying to measure the transmit power of nRF51 development kit with a spectrum analyzer and I am facing the following issue:

It is specified in the user guide of nRF51 that "When connecting the test probe ... (more)

27
views
no
votes
no
answers
Last activity 2017-11-20 06:51:29 +0200 by Arun

change MAC address in ble_app_beacon example

Greetings,

For my application,I need to change the nrf51's mac address. Previously I have changed the MAC id using the following code,

static ble_gap_addr_t m_central_addr;

m_central_addr.addr_type = BLE_GAP_ADDR_TYPE_RANDOM_STATIC;

m_central_addr.addr[0] = (uint8_t)NRF_FICR->DEVICEADDR[0];

m_central_addr.addr[1 ... (more)

77
views
1
vote
no
answers
Last activity 2017-11-20 06:45:43 +0200 by Haruki Kawakami

fds_record_update sometimes always returns FDS_ERR_NO_SPACE_IN_FLASH

Hi,

I'm using FDS instead of pstorage. FDS version is SDK13.0.0. fds_record_update sometimes always returns FDS_ERR_NO_SPACE_IN_FLASH though I call fds_gc after it gets FDS_ERR_NO_SPACE_IN_FLASH every time.

static void fds_evt_handler(fds_evt_t const * const p_fds_evt)
{
    if (p_fds_evt->result != FDS_SUCCESS ...
(more)

13
views
no
votes
no
answers
Last activity 2017-11-20 06:14:06 +0200 by Yuh-Horng Chen

[Bug Report] Memery Manager Library XXLARGE Blocks doesn't work

When I only used XXLARGE block, I got bellow error:

..\..\..\..\..\..\components\libraries\mem_manager\mem_manager.c(484): error:  #94-D: the size of an array must be greater than zero
  static uint32_t m_mem_pool[
LOCK_BITMAP_ARRAY_SIZE];                                                /**< Bitmap used for book-keeping availability of all blocks ...
(more)

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  • Total users: 25365
  • Latest user: Fermin Cooke
  • Resolved questions: 11015
  • Unanswered questions: 3696
  • Total questions: 27162