# 6,048 questions

Tagged
• x
1k
views
6
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## Is it possible to run the nRF51822 from a 5v supply directly?

Hi, the nRF51822 specifies a max voltage limit of 3.6v. Would the device actually operate from a 5v supply albeit with a shortened lifespan?

thank you

5k
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## How do I load a softdevice into the nRF51822?

What tools do I need to load the softdevice onto the nRF51822?

5k
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## What is the most efficient way to transfer data over BLE ?

Hi everyone,

 I've just started to develop software for NRF51822 - Bluetooth Low Energy on the Evaluation Kit. I managed to connect the development dongle and evaluation kit successfully; but I want development dongle to send a data to the ...
(more)

1k
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2
3

## hex file for MCP dongle

I can't seem to find the hex file to download into the PCA10000 in order to use it with the Master Control Panel. Where is this documented in the dev-kit documentation?

2k
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4
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## 32kHz running in off mode on nRF51822

Hi,

Can the nRF51822 be set up to run thr 32kHz clock in mode? What is the lowest possible sleep current while maintaining BLE connection timing?

2k
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no
5

## 32MHz X'tal for the nRF51822 main Clock

Can I use 32MHz X'tal as the main clock for nRF51822/BLE instead of 16MHz (since it is usually smaller) ???

1k
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8
2

## nRF51822 code for Temp App?

Hi,

Is there companion code for the nRF51822 that demonstrates the Broadcast function as seen in the iOS Temperature App?

Thanks!

-m

3k
views
4
2

## How add a name to a custom service ?

Is there a way to broadcast the service name in addition to service UUID in a custom service?

How can I add it to service structure ?

15k
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## How do I create my own service on the BLE stack? [closed]

I've sifted through the examples given to me, and none of them seem to explain how to create your own service and add it to the stack. All of the services that are registered in the ble examples (nRF51 ... (more)

1k
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## Sending more than 8bits of data over bluetooth

I'm looking into the service creation portion of BLE, and I've made it pretty far. But one problem that I'm running into is sending more than 8 bits of data at a time back to the board ... (more)

1k
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1

## GPIO Drive on NRF51822

Hi Nordic

I don't fully understand the drive settings for the GPIO. For example S0H1 means when the pin is CLEARED, it will use standard drive (can sink 0.5mA) and when it is SET, it will use high ... (more)

1k
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2
4

## Hello S110 World in gcc, ble_app_hrs fail

Hello Folks, I'm starting some work with the nRF51822 Evaluation Kit (PCA10001), but have very quickly run into a blocker when trying one of the ble samples. (I've previously run the led-blinky sample apps, so this should rule ... (more)

1k
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6
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## Reference design PCB thickness and material

What is the recommended PCB thickness of the nRF51822-QFAA Reference Layout? It'd be great to have a specification in the package including the full spec of the PCB material that Nordic uses (dielectric constant @2.4GHz, etc).

1k
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1

## nRF51822 using app_uart.c with PCA10001

hi, I am having problem trying to get the app_uart.c to replace the simple_uart on the blinky example with PCA10001. My uart param as follows:



void uart_event_handler(app_uart_evt_t* p_event)
{
}

app_uart_comm_params_t para_uart =
{
.rx_pin_no    = RX_PIN_NUMBER,
.tx_pin_no    = TX_PIN_NUMBER,
.rts_pin_no   = RTS_PIN_NUMBER,
.cts_pin_no   = CTS_PIN_NUMBER ...
(more)

1k
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## TWI init conflicting with BLE initialisation calls

Hello. I've used the design template that initialises everything for Bluetooth communication. These are the initialisation calls made in main():

// Initialize
leds_init();
timers_init();
gpiote_init();
buttons_init();
ble_stack_init();
scheduler_init();
gap_params_init();
services_init();
conn_params_init();
sec_params_init();

// Start execution
timers_start();


690
views
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11

## How to configure debuging options

Hi, my name is nils. I am trying to develop on the nrf51822 eval board. I use eclipse an gcc with the j-link under windows 7 to programm/compile/and flash. I got it to work, that i can complie ... (more)

2k
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## ERROR while triyng nrf_delay_in_us

Hi,

can anyone help me with tih error, because of the nrf_delay i cant compile. i use keil to programm the nrf51822.

Thanks, Nils

2k
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6

## The ARM Linker has stopped working

Hi

I am trying the nRF51822 Evaluation Kit for the first time.

(more)

1k
views
no
3

## PCB layout recommendations for the NRF51822 WLCSP62 package

Where can I find PCB layout recommendations for the NRF51822 WLCSP62 package? In the datasheet, only package details is appearing.

4k
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8
1

## What's the difference between nRF51822 Evaluation and Development kits?

I'd like to start developing with the nRF51822, and have found the two kits supplied by Nordic, the nRF51822 Evaluation Kit and the nRF51822 Development Kit. What's the difference between these, and which one should I buy?

7k
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## How can I use a vendor specific UUID? [closed]

When I try to make a custom service with the S110, how do I set the service and characteristics up to use a custom 128-bit UUID instead of a 16-bit one, based on the Bluetooth SIG base?

3k
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## 128 bit UUID's [closed]

Hi,

returns always err_code = 7 (NRF_ERROR_INVALID_PARAMETER) for a 128 bit UUID type (BLE_UUID_TYPE_VENDOR_BEGIN).

For 16 bit UUID types it works fine. Here is the code:



#define UUID_128       1

{
uint32_t ...
(more)

738
views
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1

## How to stop the advertising after connecting the master.

Now I am doing the BP by using the "ble_app_bps" project. I find it still advertising after connecting to the master,so the power consumption is high.So I wanth to use the "sd_ble_gap_adv_stop" function to stop the advertising to ... (more)

2k
views
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2

## nRF51822 DK Module as Master

Hi,

I'm looking to work with a Bluetooth LE master device. From what I read the nRF51822 should be able to function as a Master device (the dongle is configured to be a master device). Is there a way ... (more)

1k
views
1
vote
1

## Timer configuration with Softdevice

Hi,

mi question is about how to configure in a good and complete way Timer1 and Timer2, so trying to be more specific with my Question: I need timers with a Tick of 250ns, and as far as i know ... (more)

546
views
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1

## Bonding only when client is close to server?

What's the proper way to implement bonding that depends on proximity (rather than a whitelist)? So when the client (phone) is close (say, five to ten centimeters) to the server (BTLE peripheral) then there is a bond created and ... (more)

730
views
no
1

## Triggering a task when a TIMER event

I'm looking at the led.c example in the heart rate monitor example. What this shows is how to tie a TIMER event to toggling an LED. I understand most of the mechanism there. The novice that I am ... (more)

537
views
1
vote
1

## Services initialisation and setup template?

Now that I have TWI and the BLE stack initialising, I'd like to create services. The Server (peripheral) sends out a few bytes to the client when a local trigger happens, and also needs to be able to accept ... (more)

768
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5
1

Hi,

Is it possible to give a function address to the "Task End-Point" of a PPI channel?

Like :

    err_code = sd_ppi_channel_assign(PPI_CHAN0_TO_TOGGLE_LED,
&(NRF_TIMER1->EVENTS_COMPARE[0]),
&(myTestFunction));


Or the only accepted TEP are timer and GPIOTE tasks?

Thanks

5k
views
5
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## Cannot recover with NRFgo: "Could not read AHB-AP Id. Could not connect to target."

See subject. The softdevice is currently installed on the chip (v6.0.0-1.alpha)

I searched online, and found some information that the security state of the chip has been set to "locked". Is this true? How to unlock it?

Thanks! Jamie

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