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28,761 questions

425
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1
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Last activity 2014-04-14 19:15:28 +0100 by Marcio Segura

Can't write on Peripherals memory of nRF51822 using gcc emIDE or Em::Blocks

I am struggling to figure out why I can't write on the Peripherals memory to set a function. In this case I am trying to write in the 0x4000250C which is UART0, PSELTXD (Pin select for TXD), but it ... (more)

252
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no
votes
1
answer
Last activity 2014-04-14 07:58:46 +0100 by David

Can I use some of the example code for nRF51822 on my custom board?

Hi, I am trying to code my nRF51822 on my custom board, however right now I'm having my doubt on using some of the example code provided in the SDK.

Essentially, I want to try sending a byte via ... (more)

191
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no
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answers
Last activity 2014-04-14 05:21:50 +0100 by johnzhel

Do I have to use external host MCU for 51422?

Do I have to use external host MCU for nRF51422? What can the ARM Cortex processor inside SoC 51422 do and cannot do?

I want to create a mesh network with hundreds of ANT nodes, each node can scan all ... (more)

112
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no
votes
3
answers
Last activity 2014-04-14 05:00:09 +0100 by mtsunstrum

Can't upload attachments on Developer Zone

I have done this in the past with no problems using Chrome or Firefox.

But for last couple of posts, I have not been able to add attachments. It allows me to select my files, but when I submit, no ... (more)

520
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1
vote
1
answer
Last activity 2014-04-13 09:28:21 +0100 by Dmitri

NRF_UART0->ERRORSRC = 0xC - what does it mean?

Hi,

I'm porting a nrf51822 evaluation board 10001 tested application to a custom board. Part of the application is using UART interrupts to raise a flag and start data transfer through BLE. When i run the application on the ... (more)

350
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4
votes
3
answers
Last activity 2014-04-13 02:50:20 +0100 by Richard

Pre/Post Advertise Hook

Hi all,

My application gathers sensor data and uses the advertisement packet to broadcast the values (much the same as the nordic temp sensor example). Rather than having to have a separate timer which aligns with the advertise interval (which ... (more)

2k
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2
votes
1
answer
Last activity 2014-04-12 22:02:11 +0100 by Marcel

SoftDevice and TIMER interrupts

As per this thread: https://devzone.nordicsemi.com/index.... the SD stack takes care of HFCLK, however as fas as I understand HFCLK is also responsible for timers - now, when SD stack is in use/enabled and it takes care ... (more)

897
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1
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Last activity 2014-04-12 20:57:41 +0100 by Mahendra Tailor

S110 7.0.0 : Can I write my own MBR?

Hi

I am looking at section 9.1 of the S110 Softdevice Specification v1.3A and the release notes for 7.0.0-2.alpha where I see that an application now starts at 0x15000 which is to make room for ... (more)

327
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Last activity 2014-04-12 20:33:14 +0100 by Mahendra Tailor

S110 v7.0.0-2.alpha and sd_softdevice_forward_to_application()

Hi

S110 v7.0.0-2.alpha got released today.

In the release notes it says...

[b]The SoftDevice can now be configured to forward interrupts to one of several applications (FORT-815). This is done by adding a parameter to the ... (more)

508
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no
answers
Last activity 2014-04-12 19:32:43 +0100 by Mathew Key

TWI sticking in twi_master_read polling for NRF_TWI1->EVENTS_STOPPED

Hey all,

I have a custom board running a 51822 rev C0 chip connected to a TMP102 temp sensor over I2C. I was using the twi_sw_master.c to successfully talk to it in my main loop before I start the ... (more)

248
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no
votes
1
answer
Last activity 2014-04-12 11:46:10 +0100 by dong li

Fail to readback protection

I program the nRF2727 module with the "Block readback of mainmemory" seleted using nRFgo studio tool. After that, I can still read out the content of flash. What's the root cause?

555
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no
votes
1
answer
Last activity 2014-04-12 08:51:27 +0100 by Saurabh Gulia

Set Read Property of Characteristic in nRFGO Studio

How to set READ property to a characteristic pipe through nRFGO studio.Actually i am not able to set READ property to any pipe.How can i do this?

Because i want iPhone to read value from this characteristic pipe ... (more)

970
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no
votes
1
answer
Last activity 2014-04-12 06:36:23 +0100 by Barada Mishra

Low power mode?

Hi All,

I am new to nrf51822. I need a much less powerful CPU than the 16MHz CPU, is there a way to slow down the CPU to save power?

Thanks

239
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1
vote
1
answer
Last activity 2014-04-12 03:18:09 +0100 by FM

iOS nRF UART SKD 5.2

I have compiled the ble_app_uart sdk the nRF51 SDK_v5.2.0.39364. (see attached file) and I upload this app to my device using OTA .

I found it can work with my Android device but not the iOS device. I ... (more)

193
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1
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no
answers
Last activity 2014-04-11 13:11:09 +0100 by kjell bystedt

bulk/block data transfer

Does your new implemenation of BLE 4.1 support bulk/block data transfer? What data rate could be possible ? /Best Regards Kjell Bystedt

179
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no
votes
2
answers
Last activity 2014-04-11 12:14:57 +0200 by selfbg

HW error on nRF8001

Im using custom board with nRF8001. I'm using Hello World example from GitHub. The nrf chip revision is C not D. When I connect the board to Arduino Leonardo the device start advertising. But I want to use external ... (more)

825
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no
votes
1
answer
Last activity 2014-04-11 10:57:31 +0100 by xiewen

Dongle firmware?

I want to load a Blinky project to the AK board, and the dongle is used as a jlink, but I forget to move the jumper to the 'out', and the program is loaded to the dongle. Now the master ... (more)

1k
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no
votes
1
answer
Last activity 2014-04-11 10:38:41 +0100 by Maidu

nrf51822 SPI Slave not working

I have two custom boards with nrf51822 QFAAG0 1348AC chip. I use 16 MHz crystal. Bluetooth functionality is working fine but SPI does not work. SPI pins are P0.00 ( MISO ), P0.01 ( MOSI ), P0.02 ( SCK ), P0.03 ( SS1 ... (more)

181
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no
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1
answer
Last activity 2014-04-11 09:36:18 +0100 by plinzler

searching for BLE example project: nrf6310 nrf6310

Hello,

I am searching for an exampleproject to learn how to connect to motherboards (or an evaluation board) over bluetooth:

I try to send data from on chip (nrf51822) to another on and want to send that data via UART ... (more)

1k
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no
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2
answers
Last activity 2014-04-11 08:30:24 +0100 by jixing.zou

NRF51822 CONSUME with using the Softdevice

Hi

I ran the example " ble_app_hrs ".  the consumption is 1.5mA, when I  hold SWCLK and nRESET low,the consumption is fall to 0.9mA. how I could reduce the consumpion??

126
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Last activity 2014-04-11 05:04:57 +0100 by mahone

Where to get the matching configuration and how to measure the current on every status?

Hi,

  1. I use the nrf51422 chip.I want to know if the ANT establish link between chips,where can I get the matching configuration (like device type、channel ID).I mean is there a register or a function that can ...
(more)

209
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no
answers
Last activity 2014-04-11 04:39:09 +0100 by mahone

About Acknowledge Mode

Hi,

I change the example ant_broadcast to acknowledge mode, but it seems that without a peripheral side,the LED0 will still twinkle.I don't know how to change the project so that only with a receiver will the sender ... (more)

371
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2
votes
2
answers
Last activity 2014-04-11 04:13:51 +0100 by Beerbohm Brook

how nRF51822 ESB Protocol datarate reach?

when I use nRF51822 ESB Protocol,I set retransmit delay = 600us,anything else is working

good,communication is very well,but the minimal Tx period is 1.2ms,not 600us,why?

If the minimal Tx period is 1.2ms,the ... (more)

323
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Last activity 2014-04-11 01:26:08 +0100 by Charles Horkin

Performance of GATT

Is there a way to recieve more than one write callback for a given characteristic, per radio session? It seems like I can rx 1 time per attribute per radio session and tx up to 8 times per attribute per ... (more)

672
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no
votes
1
answer
Last activity 2014-04-10 22:37:58 +0100 by Paul Loftsgard

Limiting advertising channels

Is there anyway to limit the number of channels a device is advertising on?

I'm using an nrf51822 with the S110 stack and want to limit my device to a single advertising channel (just 37, instead of 37, 38 ... (more)

692
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no
votes
7
answers
Last activity 2014-04-10 15:45:00 +0100 by Nestor Matas

Compatibility table for nRF51422

Is there any compatibility table for nRF51 series chips with revisions, softdevice versions and SDK versions?

I have some custom boards with a module that contains a nRF51422 CEAA A0 (0x0031) and although I can reprogram the softdevice downloading the ... (more)

271
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no
votes
1
answer
Last activity 2014-04-10 14:23:43 +0100 by kk

can not creat my own characteristic

HI ALL i have successfully creat my own service referring to the example ble_app_lbs and reference nAN-36. but when i tried to creat my own characteristic in my service, it did not wrok(the device became unable to advertise, and ... (more)

901
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no
votes
2
answers
Last activity 2014-04-10 14:07:51 +0100 by Julian

ULINK for nRF51822

I posted this on the Keil website, but got no answers! I would like to use one of my ULINK 2 pods to develop my application. However the Keil interface defines a reset connection. As we all know, the nRF51822 ... (more)

512
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no
votes
2
answers
Last activity 2014-04-10 08:06:24 +0100 by jimlin

How to send LL_CONNECTION_PARAM_REQ from slave

Hi,

I want to change the GAP params such as connInterval, slaveLatency, and have some questions:

1.can I call sd_ble_gap_conn_param_update directly or need to send LL_CONNECTION_PARAM_REQ first and wait for the BLE_GAP_EVT_CONN_PARAM_UPDATE event? a. If need to send LL_CONNECTION_PARAM_REQ ... (more)

582
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no
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2
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Last activity 2014-04-10 05:34:59 +0100 by aaronxu

How to migrate FATFS on nRF51822?

I want to store data more than one page on flash, and modify it very often.

pstorage or Fatfs? and how?

Thank you!

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