42 questions

Tagged
• x
211
views
1
vote
2

Low level clock

Hello,

I need time synchronization between the two devices. At the same time I want to use the standard means of bluetooth, synchronizing the clock of the connected devices with each other.

Am I able to get the time from ... (more)

46
views
1
vote
2

Hello, In our project we want use a large characteristic with notification property.

I use a "ble_app_template" project from nRF5_SDK_14.2.0_17b948a\examples\ble_peripheral. In a project i added custom service with one characterics, it's length 200 byte. Property ... (more)

37
views
no
1

Debug NRF52832 + SoftDevice S132 undo Keil v5

Dear experts,

I'm a new user of NRF52 technology and I use:

• Keil µVision v5
• NRF52832 (PCA10040)
• Keil software pack 8.15 from Nordic Semi
• debugger Cyclone FX from PEMicro

Can you help me please for the following questions ... (more)

16
views
no
no

hi, I need combine to SAADC with BLE interface. The following is the code I have written. However, I'm unable to transmit information via bluetooth. Can anyone help me with it? I'm using nrf52 dk with pca 10040 ... (more)

68
views
no
1

Issue with MPU9250 and nrf52

Hi,

I have been working on MPU9250 examples given in here.Though the program runs fine in KeilUvision 5, the output in tera term shows only 0,0,0 for Accelerometer values in X,Y and Z. I connected the ... (more)

45
views
1
vote
1

How to back up common source libraries

Every time I change a common source file within Kiel, the source file is changed for every project because (obviously) is a file common to all example projects.

Is there a way, without manually copying over the libraries and change ... (more)

56
views
4
1

how to boot another board

hello,

i have developed one board using nRF52832-QFAA and trying to dump simple LED blinking code in it using nRF52 DK board. But code is always dumping into custom board not in my board. i am using P20 connector to ... (more)

38
views
no
no

Cannot step past second instruction in disassembly window

When I run the UART app nRF5_SDK_12.3.0_d7731ad\examples\peripheral\uart in debug mode, the disassembly window opens, and I seem to get stuck on the second instruction. Step over doesn't step past the second instruction. Why is ... (more)

49
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)

153
views
no
1

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)

1k
views
no
1

which pins of nRF52832 can support PWM and how many pins can support.

i need to connect 8 DC motors to it,using PWM channel.It is possible to connect with it

285
views
2
2

what are the documents require to start programming with nRF52

examples are given but how can we apply them as per our requirement

187
views
1
vote
1

Implementing UART profile between NRF52832 (as central) and HM10 (as peripheral)

I am facing some issue, I am using HM10 ble module as peripheral and NRF52832 (Redbear NANO v2) as central device. I using SDK "nRF5_SDK_12.3.0_d7731ad" and example program "nRF5_SDK_12.3.0_d7731ad\nRF5_SDK_12.3.0_d7731ad\examples\ble_central\ble_app_uart_c". I ... (more)

176
views
1
vote
2

problem testing DFU functionality w/SDK14 SoftDevice v5

Hello,

I am trying to update our application with DFU support but it will not work for me. One of 2 things happens:

(more)

35
views
no
no

Failing in build when changing directory structure

I'm building wih Keil MDK-Lite Version 5.24.1 and I just copied the examples for gpiote into my own folder, everything was kept the same (ie copying from C:\Nordic\nRF5_SDK_14.0.0\examples\peripheral\gpiote to C ... (more)

459
views
no
1

Outdated Keil Software Packs

Hello, I discovered that Keil's software pack for nordicsemi devices are way outdated. Is there any chance to update those? I am quite redundant to add all sdk manually since I am very new to the stuff.

Regards

42
views
no
1

[Fixed] Changes to header file not reflected

Hi all,

I just got the Rigado BMD-350 dev board that is based on the the nRF52832 Nordic SoC and I am trying to modify the ble_app_blinky example to include 1 more characteristic to control the 4th LED on the ... (more)

96
views
no
no

buttonless DFU SDK v14.0 problems [closed]

Hello,

I am having difficulty downloading an application using the sample images provided. It looks like the application boots into the bootloader, there is a brief message that it is downloading but then the name changes to DFUTEST and LEDs ... (more)

24
views
1
vote
1

generate NRF_TWIM_EVENT_ERROR when I2C finish TX

HI team,

I use the S132 ,SDK_12.3.0 , nrf52832 PCA10040 v1.1.1 develop board. I met a problem when I do experiment with twi_sensor example code.When nrf52832 finished transfering data to sensor throug I2C. It will generate ... (more)

1k
views
no
1

PPK Question [closed]

Hello,

We encounter the problem after upgraded the PPK software. There are different results when using PPK v1.0.0 and v1.1.0.

1. Using PPK v1.0.0

2. Using PPK v1.1.0

(The highlighted spikes are active by ... (more)

141
views
no
1

ble hangs when UART initialized

Following is the sequence of code

uart_debug_init();

gap_params_init();
services_init();
conn_params_init();


Following is UART initialization code

uart_debug_init()
{
const app_uart_comm_params_t comm_params =
{
7, 8,
NULL,
NULL,
APP_UART_FLOW_CONTROL_DISABLED,
false,
UART_BAUDRATE_BAUDRATE_Baud38400
};

APP_UART_FIFO_INIT(&comm_params,
UART_RX_BUF_SIZE,
UART_TX_BUF_SIZE ...
(more)

56
views
no
no

NRF52 no longer advertising or flashing led

I have two NRF52 chip sets. Yesterday, I was able to build and flash the Beacon and UART sample projects onto both of these chipsets.

After building and flashing, a small blue LED light would start blinking periodically. I could ... (more)

238
views
no
1

remote dfu insufficient resources [closed]

I am using nrf52832 BLE chip(10040), sdk 12.2, softdevice s132 with sample example boot-loader code(dual bank).

I modified the boot-loader code for button-less DFU.

The dfu failed with remote dfu error ie remote dfu insufficient resources.

204
views
1
vote
1

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)

266
views
3
1

How to measure centre frequency on the nRF52832 ?

Hi,

I am using the nRF52832 and I have been trying to meausre the centre frquency on a specturm analyser. But, the centre freq on the specrum analyser is 1.81GHz when it is supposed to be about 2.4GHz ... (more)

132
views
no
2

PWM Error when using with nrf52 PCA10040 s132 nrf52832

I have implemented pwm as suggested in the info centre of nordiac semiconducter. But it showing the following error as shown below image.

Thank you.

249
views
no
1

How do I control an external LED using nRf52832 ble board?

Hey,

I am trying to control an external LED using two nRF52832 boards. I am using "nRF5_SDK_13.0.0_04a0bfd\examples\ble_peripheral\experimental_ble_app_blinky" code for enabling & disabling LED 3 on the peripheral board. I have connected an external LED to board ... (more)

57
views
no
no

How do I control a device wirelessly using nRF52832 ?

I am trying to control another BLE device with nRF52xx. For controlling the device I need a terminal for connecting, disconnecting and switching on & off a sensor. I have tried to connect to an emulator (putty, termite,J-Link RTT Viewer ... (more)

521
views
1
vote
1

nrf52 PPI+EasyDMA using timer and SPI

Hi,

I am using nrf52832 for my application. The application share same SPI module for two sensors(with sensors are selected using two chip select pins). Is it possible to implement PPI channel between a timer and this SPI module ... (more)

69
views
no
2

Help with calculating cadence from a pulsing input [closed]

I am working on modifying the ant+ sdm example to hack my treadmill. Got the example running and talking to my Garmin watch and the display simulator. All of that seems straight forward and easy to manipulate.

Now I want ... (more)

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