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8,422 questions

12
views
no
votes
2
answers
Last activity 2015-07-28 11:39:03 +0200 by jayesh

nRFgo Studio not detects PCA10001 kit

Hi,

My Nordic kit just stopped detecting from last two days. I have also check this in other PC also. It detects some times some times not. I am using Windows 8. I have also installed the latest version of ... (more)

3
views
no
votes
no
answers
Last activity 2015-07-28 11:18:35 +0200 by Asulin

iBeacon incompatability with iOS 8.3

Hi,

I have nRF51822 board which works great with my app when running on iOS 7 The application listens for iBeacon transmission and displays them. When i installed my app on iOS 8.3, The application stoped receiving iBeacon from ... (more)

2k
views
10
votes
4
answers
Last activity 2015-07-28 11:05:17 +0200 by √ėyvind Karlsen flag of Norway

Putting my app on a (RAM) memory diet

I'm running out of RAM in my 51822 app and I need to take a look at what's using RW and ZI memory. Very little memory is being allocated with malloc. The rest is allocated at build time ... (more)

2
views
no
votes
no
answers
Last activity 2015-07-28 11:03:31 +0200 by Mici

PCA10000 with Python script for Win8

Hello,

I would like to ask you if anyone wrote Python script for connecting PCA100000 dongle to computer and using it without Master Control Panel. How this can be done? There is python scripts for nrf51 Dongle (pca10031), but i ... (more)

30
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no
votes
no
answers
Last activity 2015-07-28 10:50:09 +0200 by Maciej357

Why this example doenst work?

void i2c_config(){
    NRF_TWI0->PSELSCL=I2C_SCL;
    NRF_TWI0->PSELSDA=I2C_SDA;
    NRF_TWI0->ENABLE=5; //Enable
    NRF_TWI0->FREQUENCY=0x01980000;//100kbps
    NRF_TWI0->ADDRESS=SLAVE_ADDR;//0x53
    NRF_TWI0->EVENTS_TXDSENT=0;
    NRF_TWI0->EVENTS_RXDREADY=0;
    NRF_TWI0->INTENCLR = 0xffffffffUL;
    NRF_TWI0->SHORTS = 0;
    NRF_TWI0>INTENSET=1UL<<I2C_TX_FLAG_BIT|1UL<<I2C_RX_FLAG_BIT|1UL<<I2C_ERROR_FLAG_BIT ...
(more)

37
views
no
votes
no
answers
Last activity 2015-07-28 10:24:24 +0200 by Aryan flag of Norway

nRF51822 SEGGER J-Link Base debug probe openocd gdb fails with SIGINT 0xfffffffe.

Hardware setup:

Ubuntu <--USB--JLink--TagConnect--> nRF51822

Software:

  • gcc-arm-none-eabi 4.9.3.2015q2-1preci A GNU-based tool chain for arm embedded processors
  • arm-none-eabi-gcc4.9.3 20150529 (release) [ARM/embedded-4_9-branch revision 224288]
  • GNU gdb (GNU Tools for ARM Embedded Processors) 7.8.0.20150604-cvs ...
(more)

28
views
no
votes
1
answer
Last activity 2015-07-28 09:31:58 +0200 by Aryan flag of Norway

How to use pstorage to save and load data for initialize

I need to implement a function to store some parameters such as uart baud rate and use these parameter for device initialization, The parameter could be modified when the application running. How can I use the pstorage operation to be ... (more)

50
views
1
vote
1
answer
Last activity 2015-07-28 09:09:14 +0200 by Aryan flag of Norway

add timer in ble_app_uart

I am working on adding a timer in the ble_app_uart sample, aiming on disconnect with device which doesn't send any data in specific time, such as 5 seconds.

Now I have found an example "timer_pca10028", and try to insert ... (more)

19
views
no
votes
1
answer
Last activity 2015-07-28 08:56:19 +0200 by Aryan flag of Norway

GPIOTE interrupt mapped on memory?

Hello: Im rewritting a program from ST32F105RC to NRF51822. In a part of the program of ST32, it checks if the interruption from pins 5-9 (EXTI9_5_IRQn) is enabled, and it does following:

check_variable = EXTI->IMR & EXTI9_5_IRQn;

EXTI->IMR give us ... (more)

16
views
no
votes
1
answer
Last activity 2015-07-28 07:06:16 +0200 by RK

nrf51 dk uart connecting

Hello, I want to using nrf51 dk with uart communication. So, I want to know how connect both PC and nRF51 DK. I've download with 5pin connector to USB. In former days, I did a UART communication using Arduino ... (more)

18
views
no
votes
1
answer
Last activity 2015-07-28 05:34:26 +0200 by RK

Low memory RTT alternative

I am trying to program a custom board connected via the DK. The custom board is 16KB version (nRF51822 QFAA). RTT consumes lot of memory and hence my code does not compile with RTT. It compiles well without RTT. However ... (more)

36
views
1
vote
1
answer
Last activity 2015-07-28 04:24:32 +0200 by tussockcam

Duplicate and then dropped notification

Hi,

I'm working on a sensor application that sends out fairly large quantities of data via BLE notifications. I understand how bluetooth works and have read and followed the advice at :

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

and

https://devzone ... (more)

44
views
no
votes
1
answer
Last activity 2015-07-28 03:36:35 +0200 by Rushd

How Can I dynamically reset nRF51 without physically disconnect the device

My nRF51 will occasionally lose connection to the computer, and I have to disconnect and then reconnect it before it will work. How can I reset the device dynamically, without having to physically disconnect the device?

10
views
no
votes
no
answers
Last activity 2015-07-28 02:26:20 +0200 by eric ely

SPI Slave max RX Bytes

I am using the SPI Slave peripheral and attempting to send the nrf51822 bytes from another MCU.

Am I right to assume that there is, basically, a 256 byte max per transaction? I am basing this off the fact that ... (more)

13
views
no
votes
no
answers
Last activity 2015-07-27 23:57:43 +0200 by Locky

MCP and PCA10000 fails with new Segger Driver V500j

So Segger recently asked me to update my Driver to V500j to be able to run my new J-Link programmers. However this update has completely bricked my Test Software which uses masterEmulator. I used a PCA10000 as a test central ... (more)

6
views
no
votes
no
answers
Last activity 2015-07-27 23:57:28 +0200 by Rushd

UART low power wakeup time

Hello, I m using the UART in low power flow control mode(app_uart library). When the CTS line is asserted, what is the maximum time that the UART module takes for the UART to be powered up and ready to ... (more)

15
views
no
votes
no
answers
Last activity 2015-07-27 22:09:33 +0200 by syntroniks

How should I reset my device when using RTT?

I just started using RTT because I needed to trace execution through some ble events and the uart could not keep up.

It is very nice, but I am used to frequently resetting the microcontroller using the IF BOOT/RESET ... (more)

18
views
no
votes
no
answers
Last activity 2015-07-27 21:32:20 +0200 by tass

gzll device w power management

Hi, i try to understand how to use power down modes. But i have a problem in the example gzll_device_w_power_management of nrf24le1 sdk. Before enter register retention in line 75 (EA=0;), we disable all interrupts. My question is, how ... (more)

33
views
1
vote
2
answers
Last activity 2015-07-27 19:29:52 +0200 by cbp

PTR5518 module doesn't work (nrf51822)

Hello,

I'm trying to program that module, but i can't do it correctly.

I'm using a program that works fine in nrf51 DK, but when I program this in ptr5518 my smartphone can't found it. What ... (more)

5
views
no
votes
no
answers
Last activity 2015-07-27 18:20:21 +0200 by jcondon

Gazell Failing to add packets to Tx Fifo

In my pursuit to make a stable Gazell streaming device, I noticed some issues with pushing packets to the Tx FIFO.

Even through I get an affirmative response from the nrf_gzll_ok_to_add_packet_to_tx_fifo function, my subsequent call to nrf_gzll_add_packet_to_tx_fifo results in a ... (more)

13
views
no
votes
no
answers
Last activity 2015-07-27 17:27:29 +0200 by Celso

DFU works with windows tool but not with iOS Toolbox

When performing a DFU using the latest iOS nRF Toolbox I keep getting an "Error on init Packet Message:Operation Failed". The DFU works fine with the same firmware application package using the windows utility to perform the DFU, so ... (more)

94
views
1
vote
2
answers
Last activity 2015-07-27 16:48:00 +0200 by Hung Bui

maximum CPU temperature

Hi, In your documentation you specify the maximum CPU temperature 85 DegC. What problems could one expect after this point? How much safety margain du you have on this number? If I run the CPU at 90-100DegC, should I expect any problems?

29
views
no
votes
2
answers
Last activity 2015-07-27 16:46:59 +0200 by GT

Service Notification problem - BLE_ERROR_INVALID_ATTR_HANDLE

Hello everyone,

I am trying to enable notification on a characteristic based on the code example from nAN36. Unfortunately the sd_ble_gatts_hvx() function returns:

BLE_ERROR_INVALID_ATTR_HANDLE - "Invalid attribute handle(s) supplied. Only attributes added directly by the application are available to notify ... (more)

19
views
no
votes
1
answer
Last activity 2015-07-27 16:01:41 +0200 by RK

Softdevice block register access

Hi, I worked with temp sensor example and sofdevice s110 and something stuck on some function. Anyway, I made readout from registers but softdevice blocks register access and code fail. When I delete softdevice I can read temperature easy. Is ... (more)

91
views
2
votes
3
answers
Last activity 2015-07-27 15:27:07 +0200 by PW flag of Poland

S210 serial DFU port

I want to port either the S210 experimental DFU over ANT_FS to serial DFU or the S110 dual bank serial DFU project to be S210 compatible.

I'm using S210 V4 and SDK 8

Which project would be best suited ... (more)

29
views
1
vote
1
answer
Last activity 2015-07-27 13:53:04 +0200 by Petter Myhre flag of Norway

Several devices with same device role

I would like to connect more than 8 devices to a single host. Therefore I would have to set the same role to multiple devices.

What are the implications of using the same device role regarding packet loss?

I assume ... (more)

18
views
no
votes
1
answer
Last activity 2015-07-27 13:40:08 +0200 by Petter Myhre flag of Norway

scan stop problem

HI,

I have some problems with the function sd_ble_gap_scan_stop(). I want to stop scanning into the RTC1 event handler but when I use this function (sd_ble_gap_scan_stop()) there is an hard fault...why this happens ???

thanks.

143
views
no
votes
2
answers
Last activity 2015-07-27 13:28:15 +0200 by GEO

NRF51-ble-peripheral-bond-handling example

When i setup DEVICE_MANAGER_MAX_BONDS in 2 and trying to connect third device the nRF 51422 (10028) is freezing and all LED's light up. Why the algorithm in "device_manager_evt_handler" does't work?

42
views
no
votes
3
answers
Last activity 2015-07-27 13:14:46 +0200 by Sebastian

SPI master disable recieve

So I've been using the SPI master driver supplied via the SDK. I'm currently trying to use the nrf51822 to control an LCD screen so I can display some information. I don't need to read anything from ... (more)

22
views
no
votes
1
answer
Last activity 2015-07-27 13:11:21 +0200 by Hung Bui

bootloader over UART

Hi,

I'm trying to implement dfu bootloader over uart, not dfu bootloader over air.

Where can I find a reference source code of dfu bootloader over uart?

regards

oceanide

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