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27,095 questions

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Last activity 2015-01-27 11:29:51 +0200 by Brajesh

nrf51822 spi slave problems

Hi,

I'm trying to communicate between a stm32f4 (spi master) and a nrf51822 (spi slave). I have configured the MISO, MOSI, CS and SCLK of the nrf. I use the spi_slave_example for testing the communication.

First question is : why ... (more)

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1
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1
answer
Last activity 2015-01-27 11:27:31 +0100 by Hung Bui

How to get RSSI

How can I get RX RSSI of NRF51822 by a simple way? Any API function? I use s110(6.0.0) and sdk is 5.2.0. Thanks!!

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5
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Last activity 2015-01-27 08:57:31 +0100 by Marcel Mulder flag of Netherlands

How to allow Bonding when a button is pressed? [closed]

I'm using SDK 7.1, PCA10028 eval board, SD310 2.0.1

My application has no display, and a single button for input. I want to prevent bonding until the button is pressed. Looking at Nordic's documentation I ... (more)

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4
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3
answers
Last activity 2015-01-27 06:51:04 +0200 by todd_blackmon

nRF51 (PCA10028) uart

I have been trying to get the PCA10028 uart to communicate for the last couple of days. Originally with the S130 experimental demo project and now just the simplified uart example.

Initially, the first attempt to put a character out ... (more)

781
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1
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1
answer
Last activity 2015-01-27 03:49:01 +0100 by eric ely

No more BLE_EVT_TX_COMPLETE in SD7

I use Eclipse, gcc and OS X to compile.

I had FW working just fine with SD 6 and SDK 5.2. I recently tried to upgrade and ran into many problems, but the latest is the worst. I am ... (more)

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no
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2
answers
Last activity 2015-01-26 21:58:19 +0200 by Rick.Soza

Can I use over the air DFU for proprietary application for nrf15822?

Hi

I've written an application that uses the gazell proprietary stack for nrf51822 and I want to use OTA-DFU using BLE. Is it possible to upload the new firmware using BLE but boot tho the main application that uses ... (more)

335
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1
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1
answer
Last activity 2015-01-26 20:55:21 +0200 by Matt Barr

SoftDevice safe TWI implementation not returning false on NACK

I’m running into a problem with the SoftDevice safe twi that’s been posted in the forums a few times. I got the file here:

https://devzone.nordicsemi.com/questi...

One of my peripherals is the 24LC128 (linked to ... (more)

183
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3
votes
1
answer
Last activity 2015-01-26 18:01:16 +0100 by digitalnyx

soft device power comsumption

Hello,

I have been messing around with a PCA10001 Dev board trying to do some power consumption tests (Beacon demo code). When I enable RTC1 only and use __WFE in the main loop I get just under 4 micro amp ... (more)

713
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2
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1
answer
Last activity 2015-01-26 17:53:46 +0100 by Håkon Alseth

32KHz Oscillator Calibration [closed]

Good afternoon, I'm using an extern 32KHz crystall oscillator. Is it necessary to calibrate it? If yes, should I also use the CAL task? Best regards.

392
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4
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1
answer
Last activity 2015-01-26 17:35:26 +0100 by Hung Bui

Is there a checksum embedded in the S110?

Hello everyone,

I haven't read anything in the official documentation about it, but I was wondering if the S110 has an embedded checksum that I can use to verify its integrity at runtime.

I already do something similar for ... (more)

274
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no
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1
answer
Last activity 2015-01-26 17:17:19 +0100 by Hung Bui

how to find the target bluetooth device address using ble_app_uart:

Hi,

I'm currently working on nrf51822 beacon connected with stm32f4 board. able to communicate fine on UART as well as with bluetooth device. is there any way to find out the connected bluetooth device parameters like address, name of ... (more)

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1
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1
answer
Last activity 2015-01-26 16:37:13 +0100 by Stefan Birnir Sverrisson flag of Iceland

nRFgo nRF51822 development kit not recommended for new designs

We have been using the nRFgo nRF51822 development kit for prototyping. We now want to design our production board. However, your site says that this dev. kit is not recommended fro new designs. Is there anything about the circuitry on ... (more)

336
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no
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1
answer
Last activity 2015-01-26 16:28:36 +0100 by Hung Bui

sd_softdevice_forward_to_application() vs sd_softdevice_vector_table_base_set()

It seems these functions are identical in what they do, except that one is in S120 and the other is in S110.

Why not standardise the booting mechanism to facilitate code reuse?

127
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1
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1
answer
Last activity 2015-01-26 16:23:52 +0100 by Stefan Birnir Sverrisson flag of Iceland

Get of interrupt factor after returning from the SYSTEM OFF

Hi, all.

I have been using the nRF51822 board, I am making a peripheral. The peripheral has been equipped with a sensor to multiple GPIO. (For example, sensor1 to P0.9 , sensor2 to P0.10 )

After the application has waking ... (more)

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no
votes
1
answer
Last activity 2015-01-26 16:06:58 +0100 by Petter Myhre flag of Norway

Error using nRF Master Control Panel - Error (0x8)

Hello, I'm using the nRF6310 board and tried the HID Keyboard Application (S110, ble_app_hids_keyboard) example.

The nRF51 SDK version is 6.1. I use IAR for ARM 7.1.

I downloaded the example code and tried to connect the ... (more)

77
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2
votes
1
answer
Last activity 2015-01-26 15:41:28 +0100 by Hung Bui

nRF-Loader-iOS with nRF51422

Hello,

does the iOS Loader app not work with the nRF51422 chipset? I thought that this chip was more capable than the nRF51822. I do not seem to get access to the download (I do own several nRF51 Dongles). Any ... (more)

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4
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2
answers
Last activity 2015-01-26 15:38:08 +0100 by Petter Myhre flag of Norway

formatted documention for s120 v2.0?

The only documentation I can find for s120 is part of the nRF51 SDK. Though it isn't clearly stated the SDK assumes release 1.0.1 of S120 is being used.

The v2.0.0 S120 package has a ... (more)

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answers
Last activity 2015-01-26 11:58:02 +0100 by Mark

Advertising and scanning parameters [closed]

i am sending data with the advertising, and the Dongle receives the data. It only receives the data at certain times. 20 sec receiving, 30 senconds nothing...and so on.

Is there a formula to keep with the scanning settings?

1k
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3
votes
2
answers
Last activity 2015-01-26 11:36:23 +0100 by Kristin flag of Norway

how to setup network enviornment for IoT [closed]

Hi all: I refer the "IoT_SDK_step_by_step.pdf" to setup my raspberry_pi ,then I can successfully ping the DK_board from raspberry_pi.

my question is , I can't ping the DK_board from my PC with following command.

"ping fe80::028F:31FF:FE65 ... (more)

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no
votes
1
answer
Last activity 2015-01-26 10:33:04 +0100 by Stefan Birnir Sverrisson flag of Iceland

PDU error codes

Hi,

How can I control the PDU error code when reading an attribute. E.g. Attribbute not found 0x0A. For more info see 3.4.1 Error Handling Bluetooth spec 4.1 Volume 3. I use this with another BLE ... (more)

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3
votes
3
answers
Last activity 2015-01-26 10:07:48 +0100 by Stefan Birnir Sverrisson flag of Iceland

About BLE, S110, S120 [closed]

Hello! Can anyone tell me information about bluetooth protocol and SDK functions? 1. What functions need to start BLE device like a peripheral/central, and what each function means exactly?

  1. What is the GAP and GATT? For what is it ...

(more)

247
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votes
1
answer
Last activity 2015-01-25 04:51:03 +0100 by Makarand K

BLE central app with S120 [closed]

I'm trying to get the ble_central_s120_pca10028 app working on my device. However it doesn't behave as mentioned in the user guide (no BSP_INDICATE_CONNECTED on peripheral) So I tried to debug it through Keil uVision and I don't ... (more)

472
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4
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3
answers
Last activity 2015-01-25 03:33:36 +0100 by RK flag of Singapore

jlink lite replacement

My JLink Lite seems to have died (nRFgo Studio can see it, but can't connect to a target). What is the latest replacement for a JLink Lite?

Preferably something that can work with my own future PCB, and isn ... (more)

114
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1
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answers
Last activity 2015-01-23 22:14:01 +0100 by Yaroslav

S130 V0.9 advertises with significant interrupts [closed]

We are developing an application based on S130 V0.9 (orignially S130 V0.5 was used) SoftDevice using development boards PCA10001/PCA10000/Beacon. Main activities of the application are:

a) periodically (this is triggered by commands received from the host ... (more)

192
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1
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2
answers
Last activity 2015-01-23 22:12:56 +0200 by Anthony Wainman

nRF51 DK with Datalogger shield [closed]

Hi there,

Would an nRF51 DK work with a datalogger shield such as this one from Adafruit?

http://www.adafruit.com/product/1141

Thanks,

Anthony

331
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1
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no
answers
Last activity 2015-01-23 17:52:26 +0100 by Paolo A. flag of Italy

i2c eeprom with 16bit addressing [closed]

Hello everyone, I must to write and read a I2C eeprom like 24c256. I tryed to do it but all the examples with I2C protocol works with 8bit addressing. I tryed to modify mpu6050.c source code (in Nordic\nrf51822 ... (more)

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no
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1
answer
Last activity 2015-01-23 17:28:36 +0200 by Hung Bui

How to implement timeslot observer based on ble_app_hrs?

Greetings,

I have a peripheral (S110) , when it is connecting to a central, it also need to scan another broadcaster (beacon) to obtain its RSSI and send to the central. So I tried to use the Nordic GitHub project Timeslot ... (more)

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1
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Last activity 2015-01-23 15:52:18 +0100 by Stefan Birnir Sverrisson flag of Iceland

Can the connection parameters be updated by the central during a connection?

I'm trying to understand latency between simple events (like a button press) and transmissions to show that event on the nRF Toolbox iOS app. In some trials, my updates are nearly instant. In other trials, with the same firmware ... (more)

112
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1
vote
1
answer
Last activity 2015-01-23 15:47:14 +0100 by Stefan Birnir Sverrisson flag of Iceland

nRF51822 Beacon v1.1.0 iOS DFU error

Hi,

I'm testing new nRF51822 Beacon v1.1.0 dedicated for smart beacon kit (pca20006). I'm using nRF Toolbox app version 1.4 and iphone 4s with ios 8.1.2. I've followed the firmware upgrade procedure ... (more)

507
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votes
1
answer
Last activity 2015-01-23 15:31:54 +0100 by Håkon Alseth

Heart rate demo stuck at softdevice_handler_init()

Hi we are developing a customized Bluetooth smart PCB with the nrf51822, I load the softdevice 110 v 7.1.0 no problem, but when I load the heart rate demo app it stuck in softdevice_handler_init() exactely in this line ... (more)

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  • Resolved questions: 10981
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  • Total questions: 27095