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Last activity 2018-01-18 07:58:00 +0200 by efiLabs

slow ble uart on sdk14.2.0 s132 52832 device

i have 2 setups, one on a pca10040 running sdk 14.2.0 s132 and the other one on a pca10028 clone running sdk12.3.0 s130 with a 51822_xxaa mpu

the ble_uart examples from both sdks got the following ... (more)

176
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no
votes
1
answer
Last activity 2018-01-18 01:28:05 +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)

34
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1
vote
1
answer
Last activity 2018-01-17 14:50:39 +0200 by Jørgen Holmefjord flag of Norway

I want to set up a serial communication between arduino and nrf52840 ?

i have programmed a arduino to send data(int value) on tx ,rx pin .How shoul i set up the nrf52 (the pin no of rxd and txd on nrf are p0.6 and p0.8).Which example should i ... (more)

44
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no
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no
answers
Last activity 2018-01-16 17:40:43 +0200 by Chris Hunt

NRF51822 reset handler

Hi all,

I'm having a bit of trouble figuring out why my project using the RedBearLab BLE Nano board is not working. I'm using the NRF51822 as the hub in a star network using the ESB protocol. The ... (more)

52
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no
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no
answers
Last activity 2018-01-15 14:31:08 +0200 by Martin Børs-Lind flag of Norway

nrf52840 reading GPS via UART

Hi, I am trying to connect the nrf52840 to GPS module, and I hope that the dk could read the GPS information via UART. I try to modify from this example nRF5_SDK_14.2.0_17b948a\examples\peripheral\uart, but I open ... (more)

79
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no
votes
1
answer
Last activity 2018-01-15 14:30:31 +0200 by Martin Børs-Lind flag of Norway

any example about nrf52840 connecting to GPS, UART communication [closed]

Hi, I am trying to connect the GPS module with the nrf52840, and the development kit reads the GPS information via UART, I wonder if there are any examples? I read the example/peripheral/UART, but it is UART loop ... (more)

30
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no
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no
answers
Last activity 2018-01-09 02:24:46 +0200 by mokincha

CLI overrun by remote host

We're using a host PC to write factory calibration data to an nrf52 running SDK14.0.0 and S132. We're using a serial port, 115200 8N1, without hardware handshaking. The SD is configured, but not advertising or connected ... (more)

20
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answers
Last activity 2018-01-05 15:47:17 +0200 by SaiTeja

ble_app_uart_c central sometimes not discovering service from peripheral

Hello, I configured nrf52832 as central. I am using ble_app_uart_c example to set the IC as central. And esp32 module is my peripheral. I am able to establish connection and achieved bidirectional communication.

But Sometimes, my central is not discovering ... (more)

29
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no
votes
1
answer
Last activity 2018-01-05 15:13:15 +0200 by Petter Myhre flag of Norway

New ANT/BLE development using nRF51422

Dear all,

I am planning to develop a system which has the same functionality as N550M8CC SoC.

I cannot use directly N550M8CC module because space limitations so I am forced to design it using nRF51422 MCU and all the components ... (more)

80
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1
vote
1
answer
Last activity 2018-01-05 12:38:16 +0200 by Jørgen Holmefjord flag of Norway

UARTE receive timeout (RXTO)

Hello,

I have a question regarding the nrf uart driver. The RXTO event is never triggered even though the Interrupt itself is enabled (and the line is idle after a packet, so the timeout should happen unless it's set ... (more)

46
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no
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no
answers
Last activity 2018-01-04 11:08:12 +0200 by tomasz.szewczyk

NRF52-DK embedded serial port issues on Ubuntu

Hi!

I have some troubles with making embedded serial port working on NRF52-DK. Basically I can receive data sent by nrf chip but I cant write. When I write something using any terminal nothing happens on the board.

HOWEVER this ... (more)

50
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1
vote
2
answers
Last activity 2018-01-02 12:18:30 +0200 by ab

connect between 2 nrf52832

hello

i want to make one way data flow connection by using 2 nrf52832 and keil 5v

TX uart ----->BLE ----->BLE -----> RX uart

can you please help me!!

thank you so much

94
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no
votes
2
answers
Last activity 2017-12-29 14:02:19 +0200 by Martin Børs-Lind flag of Norway

Nrf52832 app_uart problem

Hello, although i have included every library and c file that is needed. i still get a declaration error. I'm almost sure that i enabled everything in sdk_config . I'm kinda stuck here and would appreciate any help.

nrf_drv_uart ...
(more)

31
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no
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no
answers
Last activity 2017-12-25 10:27:40 +0200 by Kerem

NRF52832 UART & SAADC Driver Confliction

Hello, I am trying to use adc with the uart so i can monitor the readings from adc. But when I include both drivers (nrf_drv_saadc , nrf_drv_uart) i got a confliction error. As far as I understand there are two definitions ... (more)

57
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no
votes
1
answer
Last activity 2017-12-24 20:53:03 +0200 by vam5104

mpu9250 magnetometer zero readings [closed]

hi,

10040 nrf52dk softdevice 132 v2. keil ide I am trying to read magnetometer values so that i can calibrate it using this method. For this to happen, i need magnetometer, accelerometer and magnetometer values. However, im not able to ... (more)

46
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no
votes
no
answers
Last activity 2017-12-22 14:27:03 +0200 by Sai Ram

Interfacing nRF52832 to external MCU via UART

Are RTS and CTS pins necessary for serialization of nRF52832(behaving as central BLE device) to external MCU?

35
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1
vote
1
answer
Last activity 2017-12-18 19:44:34 +0200 by AmbystomaLabs flag of United States

Must pins (5=rts, 6=tx, 7=cts, 8=rx) be used for hwfc?

I have a micro connected to the PCA10040. I can use flow control with 5=rts, 6=tx, 7=cts, 8=rx. Are these pins necessary or advisable for hwfc?

thanks,

Richard

37
views
no
votes
1
answer
Last activity 2017-12-18 11:07:13 +0100 by Jørgen Holmefjord flag of Norway

Why nRF Connect v2.2.1 cannot select (USB-SERIAL CH340 (COM3))?

bug (JLink CDC Uart Port COM5) is variable?

96
views
1
vote
1
answer
Last activity 2017-12-11 12:23:22 +0200 by run_ar

UART switching in nRF52832

Hello,

We plan to switch between two sets of UART pins for factory testing. One set will talk to an IC in our design and the other to a USB port through FTDI. Since simultaneous communication is not needed we ... (more)

105
views
1
vote
2
answers
Last activity 2017-12-09 03:32:26 +0200 by embedded717

Not able to connect nrf52 dk board with mobile app

Hi, I flashed softdevice and ble_app_UART_c code. But after searching bt device, i could not find bt nrf52 device in mobile. Do i need to something more..

176
views
no
votes
no
answers
Last activity 2017-12-08 17:34:46 +0200 by T_chapelle

nrf52832 Uart SDK14

Context : I am using a nrf52832 to communicate via UART to a STM32 on a custom board. I've based my work on the Ble nus service example. Main change from the DK is that i don't have an ... (more)

119
views
1
vote
1
answer
Last activity 2017-12-08 11:16:47 +0100 by Sigurd flag of Norway

nRF52840 UART connection [closed]

Hi support team,

I'm using Nordic nRF52840 with PCA10056 and SDK 14.1. I have a problem with UART connection. I have a custom board which need to hook up UART connection with Nordic PDK for data or command ... (more)

54
views
1
vote
2
answers
Last activity 2017-12-07 13:36:34 +0200 by Kaito

How to disconnect the uart when data is not transmitting

Hi! i am thinking about cut off uart when data is not transmitting. As a method 1, i am thinking about using CTS and RTS Pin which is hardware flow control! ①Is this possible?? ②also,Is there a sample code ... (more)

67
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1
vote
1
answer
Last activity 2017-12-07 13:16:37 +0100 by Martin Børs-Lind flag of Norway

Nrf52840 UART connection problems [closed]

Dear support team, I’m using nrf52840 with PCA10056 and SDK 14.1. I have problems of UART connection.

  1. I do believe that MCU has physical connections to nrf52840 GPIO pins of P0.05, P0.06, P0.07 and P0 ...

(more)

44
views
1
vote
1
answer
Last activity 2017-12-07 12:22:28 +0200 by mantap

How to connect nRF51822 using adxl345 SPI? needed help

Well, I have question for this SPI connection problem. anyway,I have nRF51822 core board using adxl345 with SPI connection. that connect SDA to P5, SDO to P6, SCL to P7, CS to P8. this program works fine till connect ... (more)

76
views
no
votes
1
answer
Last activity 2017-11-28 16:56:19 +0200 by Davide flag of Italy

uart baudrate nrf52

I'm working with uart on the nrf52832 and I'm facing an issue related to the baudrate.

In this post a formula for calculating the baudrate given the register value is given. By applying that formula to the UART_BAUDRATE_BAUDRATE_Baud921600 ... (more)

59
views
no
votes
1
answer
Last activity 2017-11-28 10:26:59 +0100 by Ketil

MIN MAX connect interval

i use BLE uart project SDK 11 NRF 51822 with 2 value min max conn interval default is 20 and 75 ms.

i use android App was built by my team, and it' hard connect to NRF. sometime miss, sometime ... (more)

53
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no
votes
no
answers
Last activity 2017-11-27 15:07:44 +0200 by Martin Børs-Lind flag of Norway

NRF51822 UART hangs and requires power cycle

Hi,

I am making a GPS tracking system using NRF51822-QFAC. I am using 2 UARTs, one of the (external) GPRS IC and one for (external) RS485 communication.

The UART peripheral hangs after some time. I don't know if it ... (more)

73
views
no
votes
1
answer
Last activity 2017-11-23 10:05:19 +0200 by Jørgen Holmefjord flag of Norway

How trigger sampling through PPI on an RTC event?

Hi,

I am using nRF52832 and softdevice is S132 adk13.1. My application is read 3 ADC channel one by one and send this value to android app using NUS. For this i have use This Time drive Adc exmple ... (more)

96
views
no
votes
1
answer
Last activity 2017-11-20 15:05:52 +0200 by Krzysztof Chruściński

UART HW flow control bugs

I have an nrf52832 connected to a UART-USB driver with RTS/CTS. CLI manages the UART connection. Using SDK 14.0.

When HWFC is enabled, if a serial connection is NOT established immediately, the scheduler library overflows with tasks causing ... (more)

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