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Last activity 2017-05-23 08:27:45 +0200 by trdop

ANCS Code base (bonding) with NUS and strange behaviour with nRF Toolbox

Hello the Nordic Team,

I come here after a lot of research and testing and do not understand what is going on in my program. (is it Embedded or iPhone nRF Toolbox side ?)

I took the ANCS code ( nRF5_SDK_12.2 ... (more)

57
views
no
votes
2
answers
Last activity 2017-05-22 14:08:09 +0200 by schef

UART not working on SDK 13.0.0

Hi. When i use ble_app_uart i have problem with my device over uart. It does not response to my commands.

I'm using custom pcb based on nrf52 with nrf UART v2.0 android app. Is there something i'm missing?

42
views
no
votes
1
answer
Last activity 2017-05-20 02:03:44 +0200 by RK flag of Singapore

Is only a single async UART supported on the NrF52 832/840 devices?

Is only a single async UART supported on the NrF52 832/840 devices?

58
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1
vote
2
answers
Last activity 2017-05-19 14:32:33 +0200 by Roger flag of South Africa

Including "app_uart.h" in main program of 'simple_coap_server' example

HI All,

I wonder if someone can help me out. I would like to send serial data by modifying the 'simple_coap_server' main program. I added the following header 'app_uart.h' to make use of the functions but when I compile ... (more)

31
views
1
vote
1
answer
Last activity 2017-05-18 20:25:30 +0200 by Turbo J

51822+uart framing+break issues [closed]

Hi

for some reason I cannot connect any PC terminal to my custom board: I would get consistent NRF_UART0->ERRORSRC = 0x000c or 0x0004 indicating break and/or framing issue. I hope someone has any hints to help me out ...

Here ... (more)

43
views
1
vote
1
answer
Last activity 2017-05-18 14:57:48 +0200 by Torbjørn Øvrebekk

NRF51 - Hardware UART - hints needed

Hi

I'm using the NRF51422 with hardware UART. Brief outline of the configuration: 115200 Baud, 8-N-1, no HW flowcontrol SoftDevice S130 V2.0.1 lib: app uart fifo

The main problem seems to be the SoC trying to send ... (more)

51
views
1
vote
1
answer
Last activity 2017-05-15 20:30:41 +0200 by good_night

NRF_LOG not working with SDK12.3.0

I can't get NRF_LOG working with SDK12.3.0. Using the same main.c and sdk_config.h from SDK12.2 - here NRF_LOG is working well - I get no messages in J-Link RTT Viewer with SDK12.3.0. ANY hints ... (more)

24
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no
votes
no
answers
Last activity 2017-05-15 11:41:09 +0200 by akshaey

BLE not sending more than 14 saadc values

Hi, i am using this program to send the data captured on 3 sensors from AIN0,1,2 to the mobile nrf toolbox application via BLE UART.

The problem is that when the sampling of event starts, it only sends ... (more)

46
views
no
votes
1
answer
Last activity 2017-05-10 10:16:42 +0200 by Martin Børs-Lind flag of Norway

Floating UART fails the device

I have a custom nrf52832 board. I have changed the UART TX and RX pins to P0.3 and P0.4 respectively. If the pins are floating, then nrf52832 stops advertising,If something connected then there is no issue. Do ... (more)

33
views
1
vote
1
answer
Last activity 2017-05-07 09:43:15 +0200 by pavanvulichi

data sent from nrf52dk to mobile app through bluetooth

hello,i am using nrf52 dk, & am working on bluetooth uart & looking for data is send from mobile to nrf52 dk board. i am having examples of data is sending from board to mobile nrf Tool app. But i want ... (more)

130
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1
vote
1
answer
Last activity 2017-05-03 14:45:04 +0200 by Bjørn Spockeli flag of Norway

SDK 13.0.0: Secure serial DFU without flow control

I am using a bootloader based on the secure serial DFU bootloader example in SDK 13 and tested it on a development kit. I noticed that hardware flow control is enabled in both the bootloader code and the nrfutil Python ... (more)

339
views
4
votes
1
answer
Last activity 2017-05-03 11:28:00 +0200 by Vasanth Dhinakaran

Recognising a received uart character

I've been having a little bit of an issue trying to parse UART data that I am receiving from an external device.

Where I'm having issues right now is comparing an incoming byte with a specific character. I ... (more)

137
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no
votes
no
answers
Last activity 2017-04-26 11:56:49 +0200 by Shrikant

Nordik UART app with Multiple service reception

I need to receive both UART Service data and HRS service data on the app.

Currently I have seen on Nordik Connect app , both the services can be found and can connect and receive data.

I need to do same ... (more)

51
views
no
votes
1
answer
Last activity 2017-04-26 11:35:21 +0200 by Guillaume LS

BLE over UART (on PC serial COM port)

Hi,

This is obviously not the first question about this, but I still haven't found the answer I need here...

I would like to make a kind of serial to BLE gateway on my PC. I mean I would ... (more)

56
views
no
votes
1
answer
Last activity 2017-04-25 12:29:00 +0200 by Jordi

Hardfault when using both UART and GPIOTE, how can I solve this problem?

Hello,

I feel like this question has an answer similar to this question, but I can't seem to get it working https://devzone.nordicsemi.com/questi...

I am using the nrf51422 chip on a board I designed myself and ... (more)

64
views
1
vote
2
answers
Last activity 2017-04-24 03:53:47 +0200 by cswanson420

Debug why DFU start packet not starting DFU

Firstly, platform: Sparkfun 52832 breakout board, DFU using UART, flashing an application, using nrfutil.

The problem fundamentally is the nRF52832 is not sending an ack that it received the DFU start packet. The packet is formatted correctly as defined by ... (more)

109
views
1
vote
2
answers
Last activity 2017-04-20 17:23:25 +0200 by Stian flag of Norway

Is it physically possible to set UART RX and TX to same GPIO pin?

I'm trying to implement send && recieve through one wire. Handling of pin state, if it is input or output is done via SW. Also it is going to be half-duplex only.

Is it possible to do something like this ... (more)

98
views
2
votes
2
answers
Last activity 2017-04-20 03:21:16 +0200 by xeem

Setting MTU Above 64 bytes Crashes ble_app_uart

Hi all,

I am trying to send a large stream of bytes(60kb) to an NRF52823 using bbowl. BBowl exposes the uart through a TCP socket connection using noble.

I modified the gatt_init code in SDK13 to support the largest ... (more)

681
views
6
votes
3
answers
Last activity 2017-04-15 19:32:35 +0200 by Khalid

How is the RTS-pin controlled in UART with flowcontrol

I am using a nrf52832 to communicate via UART to a GSM module (AT commands).

I have setup the device with a baud rate of 9600 and using HW flowcontrol. The nrf52 is doing other stuff at the same time ... (more)

71
views
no
votes
3
answers
Last activity 2017-04-13 12:21:42 +0200 by RK flag of Singapore

Is it possible to refuse a connection from a central device?

I'm developing a project based on the Nordik UART Service and I wouldn't use pairing as in the example.

However I have some problem when a central device is already connected to my nRF52, if I try to ... (more)

35
views
1
vote
1
answer
Last activity 2017-04-11 08:31:07 +0200 by Jørgen Holmefjord flag of Norway

Do I have any restriction with HW Pinout Peripheral when using s130?

if I use softdevice 130 Enabled, then do I have any restriction with using all of the pinout of NRF51xxx?

Or if I use Nrf-51 DK, Do I have any restriction with nrf 51xxx's full pinout functionality?

To Make ... (more)

98
views
no
votes
1
answer
Last activity 2017-04-10 14:29:21 +0200 by Jørgen Holmefjord flag of Norway

How to read manufacturer specific data

Hi, i'm working a BLE gateway with NRF52DK and S132 by using the demo example central uart.

The peripheral equipement advertise manufacturer data like this: 0x0001 during 5sec then 0x0002 during 5 sec and stop advertise.

But I want ... (more)

56
views
3
votes
1
answer
Last activity 2017-04-06 08:52:21 +0200 by shravani

ble app uart example led not blinking [closed]

hi i flashed s110 softdevice 7.1.0 then ble_app_beacon example application fron sdk 7.1.0 into nrf51822 beacon successfully.but led is not at all blinking in beacon.and i can not detect that in nrf uart app.

58
views
1
vote
1
answer
Last activity 2017-04-05 05:32:59 +0200 by Daniel T. Lee

does UART is interrupted by BLE SEQUENCE?

Q0. What IRQ Priority does BLE Has? and also what IRQ Priority does UART can have?

I'm guessing that from s130's document P65, Exception Model, It says,
Softdevice Timing Critical has Cortex M0 priority 0,
Application Interrupt priority ...

(more)

118
views
no
votes
1
answer
Last activity 2017-04-04 11:26:07 +0200 by Jørgen Holmefjord flag of Norway

nrf_drv_twi doesnt read multiple bytes in SDK 12.2

I am trying to use the function or any function with my BLE UART application. I have a timer that expires to kickoff reading of some sensors and then when I try to read my sensor it only writes the ... (more)

143
views
1
vote
1
answer
Last activity 2017-04-02 02:23:39 +0200 by endnode

How can I debug a system which is using softdevice S130 in BLE uart application? [closed]

I want to be able to read my i2c and program logic flow within the BLE application but when I try to set breakpoints it causes the cpu to do a hard reset. How can I capture the assert condition ... (more)

70
views
no
votes
1
answer
Last activity 2017-04-01 06:35:34 +0200 by Ladasky

nRF52 USB-UART broke, half-duplex?

Hi there,

I have multiple PCA10040 boards, and about a year's worth of experience developing code for them. I have suddenly started to have problems with USB-UART connections. Not even Nordic's SDK example code (in ../examples/peripheral/uart ... (more)

17
views
2
votes
1
answer
Last activity 2017-03-31 22:17:11 +0200 by endnode

Properly initializing an nRF51822-DK board [closed]

I have an nRF51822-DK board and so far I could not properly grab from the examples a simple thing: is there any specific initialization needed when coding?

For example I currently run APP_TIMER_INIT, APP_UART_FIFO_INIT, etc. but should I call some ... (more)

36
views
1
vote
2
answers
Last activity 2017-03-30 06:46:52 +0200 by allankliu

Regards compatibilities of demo code in different SDK ? [closed]

As a small team, we have to find silicons from retell market. Sometimes even the trader can not promise its source and batch. Here is a small list of nRF51822 available from the market.

nRF51822-QFAAC0-1311AH
nRF51822-QFAAC0-1322AY
nRF51822-QFABA0-1326AW
-------------------------
nRF51822-QFAAG3-1438AU
-------------------------
nRF51822-QFAAH0-1517DF
nRF51822-QFAAH0-1512BX ...
(more)

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