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25,452 questions

71
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no
votes
2
answers
Last activity 2015-01-22 08:20:59 +0200 by MBlau

ISP130301C nothing is running

Hi,

I have an ISP130301C chip based on the nRF51822 chip. I'm using the jLink Segger EDU to flash the chip without any problems. But it seems like nothing is running correct on the chip. Even in the blinky ... (more)

410
views
1
vote
1
answer
Last activity 2015-01-21 23:05:13 +0200 by pabigot

S120 v 1.0.1 and XXAC devices

While attempting to understand why my S120 v 1.0.1 application aborted in:

sd_softdevice_enable(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, assertion_handler);

producing:

ASSERT: src\host_core.c:290 @ 0000191e

while the ble_central/ble_app_hrs_c example in SDK 7.1.0 worked I discovered that the region ... (more)

108
views
no
votes
no
answers
Last activity 2015-01-21 22:42:53 +0200 by desmond

ANCS sending atribute to iOS

Hello , i have been following the ANCS tutorial and have managed to pair it with my iOS device. I am using the Nrf8001 with an arduino. I have read up many articles about getting more information from the ios from ... (more)

453
views
2
votes
2
answers
Last activity 2015-01-21 20:46:36 +0200 by Fabian

Do you recommend any RF power amplifier for the nRFgo motherboard?

We are using ANT with the nRFgo motherboard as base station and want to broadcast a signal over the largest range possible (> 100 m) to several mobile devices using the Dynastream N5 SoC module. For testing purposes, we would like ... (more)

141
views
no
votes
1
answer
Last activity 2015-01-21 19:03:36 +0200 by John DeWitt flag of United States

sd_nvic_region_enter/exit

In regard to the following functions

uint32_t sd_nvic_critical_region_enter ( uint8_t * p_is_nested_critical_region )
uint32_t sd_nvic_critical_region_exit ( uint8_t is_nested_critical_region )

It appears that these functions keep track of nested critcal regions for us. How are they to be used. I have just been passing in a ... (more)

499
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no
votes
1
answer
Last activity 2015-01-21 17:14:55 +0200 by Asbjørn flag of Norway

TO find out the number of retries with nRF24L01+

Hi, I have written a simple program to calculate the number of retries with nRF24L01+. On transmitter side, maximum number of allowed retries is set at 1. The transmitter sends temperature values to the receiver. Based on the response of ... (more)

254
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no
votes
no
answers
Last activity 2015-01-21 17:00:14 +0200 by Asbjørn flag of Norway

How to use PxCON register on nRF24LE1

Hi all,

I am a beginner with nRF24LE1, when I want to code some examples using GPIOs, I find that it's difficult to understand the PxCON register function. Whether I configure one pin to input or output, I just ... (more)

234
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no
votes
1
answer
Last activity 2015-01-21 16:53:40 +0200 by Asbjørn flag of Norway

nRF51422 VDD_nRF design

I'm designing my own pcb with a IMU and nRF51422 but i confused,

What's the best choice, LDO, DC-DC or external regulator configuration if I'll use a cell coin?

Someone said that use a external regulator is ... (more)

125
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1
vote
1
answer
Last activity 2015-01-21 16:37:24 +0200 by Asbjørn flag of Norway

Is this network topology supported for nRF24L01+?

I would like to use a network of nine nRF24L01+ nodes {n0, n1, ... n8} in following topology:

  1. n0 has bi-directional links with n1, n2, n3 and n4;
  2. n1 receives from n5;
  3. n2 receives from n6;
  4. n3 receives from n7;
  5. n4 ...
(more)

102
views
no
votes
1
answer
Last activity 2015-01-21 16:34:28 +0200 by Asbjørn flag of Norway

gazell internal assert

Hello,

i'm using nrf51422 with gazell protocol. Here is my interrupt on success code

void  nrf_gzll_device_tx_success(uint32_t pipe, nrf_gzll_device_tx_info_t tx_info)
{
    uint32_t uiTmp;
    //reload gazell watchdog timer
    NRF_WDT->RR[WDT_GZLL_RELOAD] = WDT_RR_RR_Reload;
    //pop packet from host if needed
    if (tx_info.payload_received_in_ack ...
(more)

631
views
no
votes
2
answers
Last activity 2015-01-21 16:32:02 +0200 by Asbjørn flag of Norway

nrf24l01+ Tx status flag does not clear, Rx status flag always zero

Hi,

I'm using two STM32F407 discovery kits with one nrf24L01+ module attached to each kit.

Here is my common init code (common for both Tx and Rx):

RF_Init(); /* set CE and CSN to initialization value */

delay(100);
RF_WriteRegister(RF24_RF_SETUP ...
(more)

914
views
no
votes
1
answer
Last activity 2015-01-21 16:08:36 +0200 by Vito

Flashing nrf51422 through SWD interface

In my project, the nrf51422 chip will be hosted on a board with another CPU. I need to be able to flash the firmware through the SWD interface, controlled by the host CPU, I have already a code which is ... (more)

105
views
no
votes
1
answer
Last activity 2015-01-21 16:08:23 +0200 by David Edwin

Maximum scan results and maximum simultaneous connections possible?

Hi Nordic DevZone User,

i want to ask if there is a limit of devices which can be found within one scan process?

And how many connections can one master have at the same time?

Background: I want to scan ... (more)

174
views
no
votes
1
answer
Last activity 2015-01-21 15:53:00 +0200 by Petter Myhre flag of Norway

smart remote audio [closed]

Hi,

I found this (PCA63506) Nordic Board, which I suppose is some kind of audio interface for the Smart Remote 2. However, I am unable to find more information on this little board.

I was wondering where I could get ... (more)

392
views
2
votes
1
answer
Last activity 2015-01-21 15:37:47 +0200 by Sergey

Softdevice hangs with big SPI master transfers.

After SD initialization and turning on advertising i have to send large amount of data via SPI continuously. SPI driver code initializes SPI module after SD init and advertising start. After few minutes of successful operation application execution suddenly stops ... (more)

372
views
4
votes
3
answers
Last activity 2015-01-21 15:07:48 +0200 by Vebjørn flag of Norway

s110/s120 send/receive data [closed]

Hello! Working with nrf51822 as s110/s120 device. Can anyone tell me, how can I receve/send data via Blue Tooth?

356
views
no
votes
1
answer
Last activity 2015-01-21 15:04:58 +0200 by Petter Myhre flag of Norway

Make the nRF51822 send multiple packets.

Is it possible to make the nRF51822 beacon send multiple packets to the devices it connects to? The example code in the beacon kit sends one UUID, but I need to send information buried in multiple UUIDs or payloads.

57
views
no
votes
1
answer
Last activity 2015-01-21 14:59:29 +0200 by Petter Myhre flag of Norway

Ant+ raw message [closed]

How I can send a "custom" messages to Ant stack? Is there any function to send the raw ant message?

I use a nRF51822 with S210

349
views
no
votes
no
answers
Last activity 2015-01-21 12:52:48 +0200 by bin simon

sd_ble_gattc_write() returns NRF_ERROR_BUSY. Why? [closed]

hi, nordic staff.

i'm working at s110(v6.0.0) and s120(v1.0.0). s110 provides notification and indication.

when s120 receives indication value from s110, s120 returns confirmation using sd_ble_gattc_hv_confirm() and sends back data using sd_ble_gattc_write() which ... (more)

177
views
1
vote
1
answer
Last activity 2015-01-21 12:27:12 +0200 by David Edwin

How to scan for other BLE devies when connected [closed]

I have an nrf51 dev board which i can currently connect to an android phone and read data from. I would like this board to be able to scan for other BLE devices and send data back to the phone ... (more)

285
views
2
votes
2
answers
Last activity 2015-01-21 11:07:53 +0200 by Anonymous

Issue when running peripheral and observer

I have a program based on some of the examples which runs in peripheral and observer roles. When either role is running alone it works without issue but if advertising and scanning are simultaneously enabled then I have to repeatedly ... (more)

174
views
no
votes
3
answers
Last activity 2015-01-21 09:48:30 +0200 by holly

Is it possible to broadcast and to observe with nRF51422 simultaneously? [closed]

Hi,

my task is to develop a "repeater" and I have three nRF51422 evaluation kits. For example, one of them sends a file, the second one receives it and then sends it to the third module. So, the one in ... (more)

43
views
no
votes
no
answers
Last activity 2015-01-21 05:02:17 +0200 by Locky

Sniffer Stops Working after 60seconds of monitoring a Connection

Hi all,

I'm trying to use the Sniffer to debug issues we are experiencing with Connection Stability on the iPhone 6 and HTC One M8. So I've trying to use the Sniffer to debug the root cause. It ... (more)

351
views
1
vote
2
answers
Last activity 2015-01-21 02:49:47 +0200 by RK flag of Singapore

Does the UART disable RTS when it sees CTS disabled?

We have two nRF51822 chips ("A" and "B") connected via GPIO pins on our board, communicating via UART using the app_uart SDK module (in APP_UART_FLOW_CONTROL_ENABLED mode). One of the chips ("B") does not need to be active all the time ... (more)

113
views
1
vote
1
answer
Last activity 2015-01-21 02:48:20 +0200 by pabigot

S120 softdevice 32K RAM support on xxac devices

Hello, from looking at the GCC linker files I take it that S120 softdevice doesn't support using the full 32KB RAM of the new nrf51422-xxac devices. Is this something that will require a new version of the softdevice or ... (more)

114
views
2
votes
1
answer
Last activity 2015-01-21 01:29:32 +0200 by RK flag of Singapore

consistent support in sd_* wrapper functions

The documentation for S110 v7.1.0 sd_nvic_ClearPendingIRQ implies that it works with any valid IRQ.

I find that (using S110 v7.1.0 with SDK 7.1.0):

  sd_nvic_ClearPendingIRQ(UART0_IRQn);

generates a hard fault while

  NVIC_ClearPendingIRQ(UART0_IRQn);

works fine ... (more)

70
views
3
votes
2
answers
Last activity 2015-01-20 17:28:48 +0200 by John DeWitt flag of United States

Hardware resources used by SD110 [closed]

I have a simple app that send button press/release events to a smart phone. One of the buttons doubles as the wakeup button. I would like to qualify the wakeup button press by ignoring short, accidental presses, so I ... (more)

183
views
2
votes
2
answers
Last activity 2015-01-20 17:26:31 +0200 by Paul

UART Reception only 6 bytes

Hello,

Using the "simple_uart_get_ with_timeout",I cannot receive a "frame" bigger than 6 bytes. Why?

while(simple_uart_get_with_timeout(1, &UART_RX[receivedBytes])){receivedBytes++;}

How to deal with this problem?

thank you!

125
views
3
votes
1
answer
Last activity 2015-01-20 17:18:57 +0200 by Paul

What is the UART default parity configuration

Hello,

I'm currently reading nRF51_Series_Reference_Manual_v2.1.pdf. On page 28.9.9 there is the UART CONFIG register documented. Two bits of configuration for the Parity (ID B), where the value 0x0 denotes no parity and 0x7 even parity ... (more)

29
views
no
votes
no
answers
Last activity 2015-01-20 16:10:59 +0200 by Stanley

connecting broke when app timer executing

Dears, There is a problem as the subject. I am using the reference code of ble_app_hts to add an app timer for a service. the device of nRF51822 can be searched and connected as well, but the connecting will break ... (more)

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