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Last activity 2017-10-17 18:34:31 +0200 by luckxiaoer

can't program nrf52832ciaa

can't program nrf52832ciaa image description

I can connect the core through segger commander image description

I can erase the chip after push the download bottom in the keil 5 ,and erase the chip

image description

but I can't program , what's wrong ?

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Last activity 2017-10-17 15:18:18 +0200 by Abhijeet kapse

how to write a functions(program) for transmitting and receiving data over uart using nrf 51822?

Hi, there i am using nrf51822 to communicate with quectel ec25 .i want to send AT commands over uart and receive some response from quectel.for eg. i am sending a "AT" command i should get "ok" response in return ... (more)

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Last activity 2017-10-17 13:51:10 +0200 by Martin Børs-Lind flag of Norway

MPU9250 is not showing output

i am working with mpu xx example given in nordic website. it seems code is working fine i.e. compiling and dumping into nrf52 DK, But not showing any output values.

i was trying to run nrf5-mpu-simple example but not ... (more)

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Last activity 2017-10-17 04:59:52 +0200 by Galen O'Neil

trouble getting started with nRF52-DK

I have an nRF5- DK and I'm following this tutorial. I loaded the softdevice, I can compile, I can load the flash, I can see the output in Termite, I can change the code to print different information to ... (more)

41
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1
answer
Last activity 2017-10-17 03:47:55 +0200 by Alex

Performing DFU with nRF Connect v1.8 Fails to Switch from App to Bootloader - Worked on 1.7.5

Since upgrading to nRF Connect on my IOS device the DFU won't reconnect to the BLE in the boot-loader after initiation from the application.

The device will migrate to the boot-loader and begin advertising but nRF connect doesn't ... (more)

25
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Last activity 2017-10-15 10:25:40 +0200 by lalit-tmt

iot stack compile for nrf52822

Hi,

I get following error when i try to compile nRF5_IoT_SDK_v0.9.x for target nrf52822

compiling x509_csr.c... assembling arm_startup_nrf51.s... <command line>(13): error: A1517E: Unexpected operator equal to or equivalent to < compiling x509_crt.c... compiling system_nrf51.c ... (more)

37
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1
vote
1
answer
Last activity 2017-10-13 11:15:17 +0200 by Hung Bui

how to set the RAM start sddress of app and bootloader

I am working on OTA DFU about nRF52810. My refernece project are ble_app_uart\pca10040\s132 and bootloader_secure_ble\pca10040 I find that the RAM start address between are different. This is the start RAM address of APP:

image description This is the start ... (more)

41
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1
answer
Last activity 2017-10-12 20:01:45 +0200 by Declan

Set RTC in nRF52832

My application is built using the nRF52832 device. The system must only be "active" between certain times (5am through to 9pm).

I am a newbie and have no idea how to set the RTC of the nRF52832. I could either ... (more)

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1
answer
Last activity 2017-10-12 15:47:48 +0200 by Martin Børs-Lind flag of Norway

How can i interface MPU9250 with nRF52 DK

As i am new in embedded programming,I was trying to connect MPU 9250 with nRF52 DK by using given examples. now it is showing error

  #error "No MPU defined. Please define MPU in Target Options C/C++ Defines"

where ... (more)

51
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1
answer
Last activity 2017-10-12 10:44:12 +0200 by Sigurd flag of Norway

how to define gpio pins and generate pwm on gpio pins?

Hi There, i am new to nrf51822 and new to program this kind of controller.I searched over the website, I couldn't find a good introductory documentation for programming the nrf51822, specifically the nrf51-dk. i have two problems 1 ... (more)

44
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1
answer
Last activity 2017-10-12 08:16:16 +0200 by endnode

RTC function using sleep mode

Im working on 14.0 and s132 and work inside ble_uart code...i was add rtc inside that code sucsessfully but now.. when device goes to sleep so rtc interrupt handler function not calling stop... so, can i use rtc ... (more)

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Last activity 2017-10-12 07:25:33 +0200 by Ashish

Flash download failed - could not load file

Hi everyone ! I'm working with nRF 52840. I've downloaded softDevice s140 using Keil. Afterwards, I selected the target to nRF52840_xxaa and then build the project of Heart Rate Application and tried to download the code, I get the ... (more)

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Last activity 2017-10-11 07:30:44 +0200 by KETAN_PATEL

How to turn on Leds only for advertising time?

Hi, i am using SDK v8.0 and in main function, initialization like this err_code = bsp_init(BSP_INIT_LED | BSP_INIT_BUTTONS, APP_TIMER_TICKS(100, APP_TIMER_PRESCALER), button_event_handler); and

in advertising_start function, calling function is err_code = bsp_indication_set(BSP_INDICATION_ADVERTISING); this is working. but i want like this ... (more)

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1
answer
Last activity 2017-10-11 05:34:07 +0200 by Jonathan

Where can i find nrf51822 firmware?

Anyone know how to put the nrf51822 firmware again? I made an update and deleted it from the kit. Where can I find it?

Thanks

49
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no
votes
1
answer
Last activity 2017-10-11 03:46:58 +0200 by Hiro

How to use 10040

Hello , ebery one Please let me have a question about PCA 10040.

When you connect a USB cable, it acts as a virtual drive and if you copy hex format (such as Hart rate monitor) by dragging and dropping to ... (more)

24
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answers
Last activity 2017-10-10 13:28:56 +0200 by Martin Børs-Lind flag of Norway

Parsing Device_name

I have a number of nRF52832 beacons that advertise at a set interval. All the beacons have a "device_name" set as "ECO". My application scans for these beacons with the device_name == "ECO". When the application reads a beacon device_name of ... (more)

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-1
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1
answer
Last activity 2017-10-10 11:04:56 +0200 by Jørn flag of Norway

how to interface tcrt1000 optical sensor with nrf51822?

Hi ,there i have tcrt1000 optical sensor wants to interface with nrf51822 so can anybody provide me the tutorial on this things with a code... cheers, Abhijeet

45
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1
answer
Last activity 2017-10-09 21:50:34 +0200 by B

Has anyone used nf51 bluetooth with some app mobile?

Has anyone ever used nf51 bluetooth with the app inventor?

I have values ​​coming out of the microcontroller terminal. I want to send them to a mobile application using the app inventor.

But I do not know how to do ... (more)

46
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answers
Last activity 2017-10-09 20:36:29 +0200 by mich_x

Battery Power problem

I am using nRF52840 board. And I used keil and nrfjprog, both successfully flashed the hex file onto the board with USB connected. The example I used is ble_app_uart_c.

My program runs fine, but once I disconnected the USB cable ... (more)

39
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1
vote
1
answer
Last activity 2017-10-09 09:46:43 +0200 by emdi

deadcode in flash

I have a app that stores some calibration information in flash (1 page at 0x7F000) When I booted now I noticed it has replaced it with "DEADCODE" following some hex number, what is this?

35
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Last activity 2017-10-07 07:54:12 +0200 by Rahul

Any one can help me with source code of mpu9250 and nrf52 DK

As i am new i don't know from where i have to start if anyone help me with this it would be a great help to me

34
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1
vote
1
answer
Last activity 2017-10-05 17:45:23 +0200 by Matt

Symbol multiply defined

Hey all,

I tried to build my project in the Keil µVision IDE. But everytime I get the same error and I can't figure out where the problem should be. I searched for the multiply defined symbols but I ... (more)

57
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1
vote
1
answer
Last activity 2017-10-05 08:49:04 +0200 by shibshab

How to pass bootloader version from bootloader to main application

Hi all,

I'd like to pass bootloader version (2bytes) from bootloader_util_reset function (bootloader) to the main of application. can help me to acheive that?

Thank you for your help in advance.

14
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answers
Last activity 2017-10-05 04:07:07 +0200 by Gova

Cannot open Source input file

I am a newbie to Nordic thingy and Keil. So please help me with this. I downloaded SDK and opened it in Keil. It asked for updating software packs update and it was done. When I tried to build the ... (more)

45
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votes
1
answer
Last activity 2017-10-04 10:10:45 +0200 by Jørgen Holmefjord flag of Norway

Unable to get meaningful data while reading analog voltage applied to pin on nrf52840. Please help [closed]

I am getting random data while using saadc example to reading analog voltage applied to pin on nrf52840. i want to read analog output from MQ135 gas sensor, I have applied the voltage output from sensor to P0.06 and ... (more)

116
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2
votes
4
answers
Last activity 2017-10-03 20:45:03 +0200 by superpak

Flash Write/Read Basic Way

Im using sdk 14.0 and s132 When i add flashwrite codes to my project which has bluetooth communication ,it does not work I wanna send data to flash and i wanna read/write it What is the simplest way ... (more)

39
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no
votes
1
answer
Last activity 2017-10-03 13:20:05 +0200 by Sigurd flag of Norway

start and stop advertising packet of every 5 min?

hi, i want to advertise packet every interval of 5min. how can i start and stop advertise packet.

21
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no
votes
1
answer
Last activity 2017-10-03 10:08:59 +0200 by Sigurd flag of Norway

RTC and nrf_timer2 with BLE SOFTDEVICE nRF51_SDK_8.0.0

hi, i want to use 2 timer in my application and BLE continuous advertising. i'm able to do with NRF_TIMER2 and BLE continuous advertising and it's working fine. but when i add RTC0 part in my code, it ... (more)

37
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no
votes
2
answers
Last activity 2017-10-02 16:05:48 +0200 by berk

nrf52832 Central-Peripheral Connection

Hello,

I am using ndk52 (nrf52832) as peripheral and central in my system. I did some changes on ble-app-uart example for both. Now i can send my packets continiously. I am trying to change it little bit more. I want ... (more)

24
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1
vote
1
answer
Last activity 2017-10-02 11:39:31 +0200 by Stian flag of Norway

Cannot upload user application code if Bootloader programmed

HI,

I am using nRF51822 by Keil compiler. I found if it was programmed with boot loader nrf51422_xxac_s130.hex

by nRFGo Studio.

Then if download user code by Keil, it cannot run anymore. But if upload a zipped user code ... (more)

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