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24,451 questions

332
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2
answers
Last activity 2013-07-30 15:22:02 +0200 by Nils Minor

Maximum I/O - current

Hi, where can i found the maximum current of the I/O Pins, i only can found the maximum voltage.

Thanks, Nils

2k
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1
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3
answers
Last activity 2013-07-30 13:18:40 +0200 by Nils Minor

UART [closed]

Hi,

is there any Example to use the UART ? I need an monitor while the application is running, is the UART COM Port the right one for this?

Is there an example with the app_uart?

Best regards Nils

344
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no
votes
1
answer
Last activity 2013-07-30 12:53:49 +0200 by Anonymous

24LE1 can be connected to other vendor's tranceiver?

Hi all,

I would like to use LE1 to control Remote controlled car. But we have been used another vendor's chip in the car by now. Is it possible to connect between them? I have no idea how to ... (more)

829
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2
votes
1
answer
Last activity 2013-07-30 12:53:13 +0200 by david perreault

how many ble 4.0 devices can connect up to the nRF51822 IC through ble 4.0 while the nRF51822?

hi, I was wondering how many active ble 4.0 devices can the nRF51822 IC support at one time?

thanks, david perreault

325
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1
vote
1
answer
Last activity 2013-07-30 12:52:29 +0200 by Carl

Setting up broatcasting time interval

Hi there,

i was trying to implement a firmware for a small device using the nRF8001 only in broadcasting mode.

So far, everything works fine. But one thing mentioned in the nRF8001_PS_v.1.1 manual doesn't seem to work ... (more)

204
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no
votes
1
answer
Last activity 2013-07-30 12:49:33 +0200 by Olav Staberg

Antennetuning

Hei

Foretar dere fortsatt tuning av matchenettverk for gamle kunder ?

Mvh Olav Nortroll AS

892
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1
vote
2
answers
Last activity 2013-07-30 12:48:12 +0200 by TechGeek

nrf51822 Operating Range

I was trying to find nrf51822's operating distance range (max) in the Bluetooth LE mode. Couldn't find any from the documentations.

Any theoretical numbers and/or practical observed would be highly appreciated.

395
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1
vote
2
answers
Last activity 2013-07-30 12:47:59 +0200 by Henri S

UART Sample app iOS source?

Hi,

Is the iOS side source of the UART sample app available somewhere?

Br, //HS

326
views
1
vote
1
answer
Last activity 2013-07-30 12:47:32 +0200 by Justin

HID Mouse click and hold confusion

I have modified the included HID mouse example to allow for left/right/middle mouse clicks. However, it is not clear to me how to set an event handler for both when a button goes HIGH as well as LOW ... (more)

507
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no
votes
1
answer
Last activity 2013-07-30 12:47:19 +0200 by Fu Hung Kwan

Cannot program nRF51822 again

Dear Sir,

After I remark this //BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.write_perm); and program it into nRF51822, then I cannot program it again. PC program report it cannot find the device. I believe nRF51822 keep running cause the Jlink cannot connect it.

I ... (more)

1k
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2
votes
1
answer
Last activity 2013-07-30 12:47:04 +0200 by User8810

How to solve the error "ended prematurely" when installing nRF51 SDK

I downloaded the nRF51SDK and followed the Quick Start guide in the Evaluation Kit Userguide (KEIL, Segger, etc)

But when I install nRF51 SDK v4.3, the installation failed and I got this error message:

nRF51 SDK Setup Wizard ended ... (more)

1k
views
1
vote
1
answer
Last activity 2013-07-30 12:46:50 +0200 by Frank

How to make PC software like the Master Control Panel ?

Hi Nordic,

I want to develop a PC software that works as a master device which can scan for advertising packet, establish connection, etc. Basically, something similar to your master control panel, but for my proprietary profile.

Could you provide ... (more)

875
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3
votes
2
answers
Last activity 2013-07-30 12:43:27 +0200 by KinoP

Keil Can Erase nRF51822 but not Program?

I find this strange but I can program the HRM demo fine but with my own code it compiles with no errors or warnings but will not program with Error: Flash Download failed - "Cortex-M0".

The funny thing is after getting ... (more)

986
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1
vote
1
answer
Last activity 2013-07-30 12:35:52 +0200 by KinoP

Timer confusion

So the nRF51822 has one 32 bit, two 16 bit timers and two Real Time Counters.

1) What is the difference in a timer and counter? The timer API seems to hard link RTC1 to the timer API.

2) Can ... (more)

13k
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17
votes
1
answer
Last activity 2013-07-30 12:35:39 +0200 by KinoProj

Notification/Indication Difference

Concerning this:

/** @defgroup BLE_GATT_HVX_TYPES GATT Handle Value operations
 * @{ */
#define BLE_GATT_HVX_INVALID               0x00  /**< Invalid Operation. */
#define BLE_GATT_HVX_NOTIFICATION          0x01  /**< Handle Value Notification. */
#define BLE_GATT_HVX_INDICATION            0x02  /**< Handle Value Indication. */
/** @} */

What is the difference in a notification and indication?

252
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votes
2
answers
Last activity 2013-07-30 12:31:47 +0200 by Jeffery

Deboune time of keyboard matrix

Hi In Desktop 2 v1.0.4, did you consider the debounce as keyboard buttons were pressed or released? How long is the debounce confirming time? Thanks.

Jeffery

3k
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no
votes
6
answers
Last activity 2013-07-30 12:31:32 +0200 by James

Is it possible to get nRF8002 to transmit continuously or rapidly (100/sec) when it receives a specific command?

I would like to use an nRF8002 in a proximity detection application. I would like to be able to send a request/command to the device to start a continuous or rapid transmit of dummy data, until a stop command ... (more)

269
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no
votes
2
answers
Last activity 2013-07-30 12:29:25 +0200 by Jeffery

Power consumption for nRF24LU1

Hi Did you have tested the power current of nRF24LU1 when RF was off and USB worked normally?
We want it less than 4mA. Could you have any idea to make it? Thanks.

155
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no
votes
1
answer
Last activity 2013-07-30 12:28:14 +0200 by joseph

How can I get nRFready iOS Demo App?

How can I get product key? I will download nRFready iOS Demo App

333
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no
votes
1
answer
Last activity 2013-07-30 12:26:53 +0200 by joseph

How can i get product key for download ios app demo source code ?

I want download ios app demo source code from https://www.nordicsemi.com/eng/Produc... it say :"please enter your product key once more for access " How can i get product key for download ios app demo source code ?

1k
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no
votes
1
answer
Last activity 2013-07-30 12:26:35 +0200 by Kino

Global Clock on nRF51822?

Seems like the timer API uses low priority interrupts. Now, I dont need the timer triggers to be exactly delivered so that is fine ... however, i do need to know the exact time between current and last timer trigger. Is ... (more)

541
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no
votes
1
answer
Last activity 2013-07-30 12:26:07 +0200 by Kino

Memory/Flash RW guidelines [closed]

So I am trying to figure out what i do and dont have access to as far as flash and ram is concerned. From the nRF51822 spec it discusses this in general but im finding myself not confident with writing ... (more)

776
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no
votes
2
answers
Last activity 2013-07-30 12:20:41 +0200 by kumari

anybody have a source code for nrf905?

hi, i need the source code for nrf905. otherwise anybody explain how to write a program for rf tx & rx using nrf905 transceiver.

285
views
no
votes
1
answer
Last activity 2013-07-30 12:18:49 +0200 by yao

NRF24LE1

I want to know the EXT interrupt (GPINT1 & GPINT0) can use at the same time. When I use the GPINT1 & GPINT0 at the same time,only one is OK the other is faile.

840
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2
answers
Last activity 2013-07-30 12:18:31 +0200 by Reinhard

nRF51822 SPI with more than one CS signal

how can I program SPI to select more than only one slave device with any GPIO ?

SPI Routine "spi_master_int" can select SPI0 or SPI1 only with one dedicated GPIO as Slave-Select Signal.

4k
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2
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3
answers
Last activity 2013-07-30 12:17:36 +0200 by Kino

IC Antenna Matching Circuit

I was wondering would it be possible to use a 50 ohm IC Antenna (like this one for the nRF51822 with the matching circuit given for the nRF24 (link here?

It seems like it should work but i am not ... (more)

203
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votes
1
answer
Last activity 2013-07-30 12:15:15 +0200 by jian

BlueTooth4.0 WeightScale

BlueTooth 4.0 WeightScale can't connect nRFready iOS Demo's Weight

2k
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no
votes
6
answers
Last activity 2013-07-30 12:10:46 +0200 by Arne Laugstol

The ARM Linker has stopped working

Hi

I am trying the nRF51822 Evaluation Kit for the first time.

I have followed the instructions in the User Guide v1.1. The blinky_example works fine, indicating that the tool-chain should be in place. But, when I am trying ...

(more)

242
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no
votes
1
answer
Last activity 2013-07-30 12:10:01 +0200 by joseph

nRFready iOS Demo's Weight

BlueTooth WeightScale can't connect nRFready iOS Demo's Weight function in ipad mini(ipad bluetooth also open).How can I do it ?

611
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no
votes
2
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Last activity 2013-07-30 12:09:26 +0200 by Reinhard

Current consumption of nRF51822 DevKit

Hi, I´ve programmed the nRF51822 DevKit´s module (PCA10004) with S110 SoftDevice and example <ble_app_pwr_profiling>. In SystemOffMode I measure a current consumption of about 20µA, but I expected <1µA. Is this the current consumption of the additional INA216 amplifier ?

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