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Last activity 2017-10-26 10:27:07 +0100 by roger.k

How many times can it bear regarding power on and off [closed]

Hi. I'm using nRF51822. My solution needs power on and off continuously. I think that is not so good at chip. Do you have any data for how many times it can bear for PWR on/off?

I need ... (more)

31
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Last activity 2017-10-25 09:42:05 +0200 by Ricky

Mesh example light_switch can not work in PCA10028 downloading by SEGGER embedded studio

Environment:

mesh SDK: V0.10.1

example: light_switch

compile and download IDE: SEGGER embedded studio v3.26a

Problem:

light onoff server and client can not provide success and control.

BUT:

When download using nrfjprog, it woks!

Question:

Is there some ... (more)

46
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answers
Last activity 2017-10-25 05:18:43 +0200 by misslove

Simulated I2C

HI! The use of simulation software I2C and the sensor module communication in my program, without the use of the protocol stack, the normal running of the program, but after entering the protocol stack, when I want to read the ... (more)

41
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votes
1
answer
Last activity 2017-10-24 16:13:09 +0200 by Jørgen Holmefjord flag of Norway

flash data storage on nRF51822 using mbed online compiler?

Anyone had a successful attempt at using the fds(flash data storage) module(http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v11.0.0%2Flib_fds.html&cp=4_0_0_3_30) on the nRF51822 on the mbed online compiler? I ... (more)

39
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no
votes
1
answer
Last activity 2017-10-24 11:16:51 +0200 by Bjørn Kvaale

NRF51822 Sleep mode with High frequency clock

I am using NRF51822,S110,16Mhz XOsc. In this if Controller goes to sleep mode the current consumption is 4.9mA. In my application at sleep mode BLE should be connected and ADC runs at timer interval.Is it possible ... (more)

194
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5
votes
2
answers
Last activity 2017-10-23 16:25:48 +0100 by Simen August Tinderholt

Antivirus flagged nrfjprog.exe

Any reason why my antivirus flagged this program? Or what the suspicious behavior is?

image description

63
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1
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answers
Last activity 2017-10-23 16:25:25 +0200 by purgoufr

how to use Simple UART driver?

From the SDK8 s110 device, I want to send the string("hello") to the other device via the uart, and in the meantime I want the battery voltage to come through uart.

I defined ;

void uart_event_handle(app_uart_evt_t * p_event)
{
    static uint8_t ...
(more)

231
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5
votes
2
answers
Last activity 2017-10-23 15:11:40 +0100 by Jørgen Holmefjord flag of Norway

How to measure two wave delay?

I have two square waveforms coming out of a pin each. I want to measure the delay between them. Which command should I use? How can I do this?

109
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1
vote
1
answer
Last activity 2017-10-23 14:59:03 +0200 by Jørgen Holmefjord flag of Norway

nRF5 SDK V14.1 IOT capabilities

Hi all,

I am currently building an app that does HTTP requests to Strava (https://strava.github.io/api/).

Before going deeper into the SDK, I would like to know if it will be able to handle the advanced authentication ... (more)

61
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no
votes
1
answer
Last activity 2017-10-23 13:09:19 +0200 by Jørgen Holmefjord flag of Norway

Is it possible to use p0.8,p0.9,p0.10,p0.11 pin as gpio in Ble_app_uart_s110 program of nrf51822?

In nrf51822 Ble_app_uart_s110 program p0.8,p0.9,p0.10,p0.11 can't use as gpio pin. How to configure it ?

64
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no
votes
1
answer
Last activity 2017-10-23 10:35:37 +0200 by endnode

I'd like to change Characteristic UUID, not based service UUID.

Hello

I have some problem that I want to change Characteristic UUID different from Service UUID. Like,

Service UUID : 11111111 - 1111 -1111 -1111 -111111111111

Charcteristic UUID : 11111111 - 1111 -1111 -1111 -111111115555

I already read other question about chage characteristic UUID ... (more)

329
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no
votes
2
answers
Last activity 2017-10-23 00:03:07 +0200 by Daniel Sullivan

KEIL4 "No Jlink device found".

I have a nRF51-DK and SDK8+Keil5. I also have a module that sadly uses an old revision 1 nrf51822. It is connected via SWD to my nRF51-DK.

I could programm it with keil 5. I can programm it with ... (more)

51
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1
vote
1
answer
Last activity 2017-10-22 13:36:44 +0200 by endnode

Connecting arduino uno to nrf51822

I currently have 2 redbear nrf51822 nano. I want to connect the UART of the nrf51822 to my arduino uno/nano but i dont know how i should do this. I tried looking for a solution but cant seem to ... (more)

39
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2
votes
1
answer
Last activity 2017-10-21 17:10:55 +0200 by John Silver flag of Belarus

How can I change the SoftDevice version? [closed]

The "Bluetooth Low Energy Characteristics" tutorial, a beginner's tutorial, https://devzone.nordicsemi.com/tutori..., uses a version 11 of SoftDevice. But I need a it in version 12.3, how can I do this?

B.

46
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1
vote
1
answer
Last activity 2017-10-20 14:18:21 +0200 by Alex

Can not run blink example

Hello! I use the NRF51228 board like this PICTURE The ICs revision QFAAH0. I use Keil-uVision 5.17 and ST-Link V2 from STM32F4 Discovery board to load firmware HEX as described here HERE I use SDK v11 - example "blink" from ... (more)

25
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no
votes
1
answer
Last activity 2017-10-20 13:27:18 +0100 by Martin Børs-Lind flag of Norway

NRF51822-QFAB-R7 EMC Firmware

We just produced a PCB with a NRF51822-QFAB-R7, does Nordic provide a EMC test firmware that we can flash onto the chip? Basically need it be always transmitting....

Thanks

(Can you tell I'm not a FW engineer :))

99
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1
vote
1
answer
Last activity 2017-10-19 21:42:16 +0100 by endnode

How to change Characteristic UUID? [closed]

Hi. I'm using nRF51822 as Peripheral.

To init the service for example "NUS", i have to call NUS_BASE_UUID as below.. #define NUS_BASE_UUID {{0x9E, 0xCA, 0xDC, 0x24, 0x0E, 0xE5, 0xA9, 0xE0, 0x93, 0xF3, 0xA3, 0xB5, 0x00, 0x00, 0x40, 0x6E}} /**< Used ... (more)

34
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Last activity 2017-10-19 16:40:33 +0200 by alidaf

nRF51822 broadcasting off-the-shelf?

Should these beacons be advertising as bought off-the-shelf? I've got six and was expecting to be able to pick up their advertisements but I'm getting nothing.

90
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no
votes
1
answer
Last activity 2017-10-19 14:06:22 +0200 by mantap

how to get data ADXL345 using nRF51822 via arduino IDE and mbed compiler

I've already tried before using ADXL345 using nRF51822 using mbed compiler this is the link.. https://os.mbed.com/users/asyrofi/cod...

but that program can't get ADXL345 data, just UART nRF51. I've tried using nrf51822 too ... (more)

241
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1
vote
2
answers
Last activity 2017-10-19 13:45:54 +0200 by Austin

SVCALL warning messages

I've recently upgraded my IDE to use Crossworks v3.6.2 which uses a GCC ARM Embedded 4.9-2015-q3-update compiler. it has by default many of the code clean up featues turned on. it has found a great many ... (more)

39
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no
votes
1
answer
Last activity 2017-10-19 10:50:45 +0200 by Sigurd flag of Norway

spi slave race condition

Hi!

After reading few posts about spi slave/master issues... I'm also challenging with one of them. I have following setup nrf51822, s130 2.0.1 and sdk 12.3.0… nrf51 (spi slave) is communicating with arm cortex ... (more)

35
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2
votes
1
answer
Last activity 2017-10-19 06:40:26 +0100 by roel0

Cannot acces upper 16K memory through GDB on nrf51

I have a BLE-Nano v1.5 board with 32KB of ram starting at address 0x20000000 (til 0x20008000). However when I want to read a byte of the uper 16K (0x2004000+), I get a 'cannot acces memory error'. The debugger is ... (more)

50
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no
votes
1
answer
Last activity 2017-10-18 22:34:46 +0100 by Håkon Alseth

SDK supports which nRF5 chips?

Hi,

Since I'm having a hard time understanding this through the SDK docs, I'll ask it here. I'm currently using a BMD200 module (from Rigado) which uses a nRF5188.

Do the latest SDK versions (13 and 14 ... (more)

28
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1
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no
answers
Last activity 2017-10-18 00:57:33 +0200 by Rajneesh

nRF51 DFU for BLE_central example

Hello Everyone,

Is there any example code is available which supports DFU in central mode for nRF51 devices?

Any help will be appreciated.

Thanks

Regards,

Rajneesh

47
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no
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no
answers
Last activity 2017-10-17 18:15:05 +0100 by Ruediger

Maximum power consumption

Hi, were are looking forward to redesign our PCB. The nRF51822 will communicate via I2C which sinks up to 3 mA and 15 IOs will source the maximum rate of 15mA. Additional to this, the Bluetooth will consume power.

I ... (more)

104
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no
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no
answers
Last activity 2017-10-17 15:18:18 +0200 by ASHISH

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)

60
views
2
votes
1
answer
Last activity 2017-10-17 11:53:35 +0200 by Jasper

J-Link does not connect to nrf51822

I want to reprogram a nRF51822 xxAC device on a existing product. I have a J-Link (SEGGER) device with latest firmware. I'm running the SEGGER J-Flash V6.20e utility. I have connected the DIO and CLK lines to the ... (more)

59
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no
votes
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)

102
views
1
vote
2
answers
Last activity 2017-10-16 11:05:54 +0200 by Jørgen Holmefjord flag of Norway

How can I get rssi before I make a connection?

Hello ,

I can read the rssi value after the connection is established.

case BLE_GAP_EVT_CONNECTED:
            APPL_LOG("Connected to target\r\n");
            err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
            APP_ERROR_CHECK(err_code);

            m_ble_nus_c.conn_handle = p_ble_evt->evt.gap_evt.conn_handle;

            // start discovery of services. The NUS Client waits for ...
(more)

49
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answers
Last activity 2017-10-16 09:19:43 +0200 by Jørn flag of Norway

can not disable Rx or TX

i need to disable RX when data was transmit and enable RX again when data transmit complete. i tried :

NRF_UART0->TASKS_STOPRX = 1;
NRF_UART0->TASKS_STARTRX=1;
NRF_UART0->TASKS_STOPTX=1;  
NRF_UART0->TASKS_STARTX=1;

( i use SDK11 pca10028) but nothing happend,i still ... (more)

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  • Resolved questions: 10974
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  • Total questions: 27077