# 1,397 questions

Tagged
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8
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1

## what should be the build setting for keil for nrf52 EVB?

dealing with nrf52 and trouble programming with Keil

48
views
1
vote
1

## Is it possible to set hopIncrement for nrf52832

Hi,

I'm wondering if it's possible to set hopIncrement (Core4.2 Vol6 PartB 4.5.8.2) to a specific value (not random), like 5, in current SoftDeivce. Also, if that's possible, can I set it to ... (more)

14
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1

## nRF51822 Central mode

Hi,

I am adding BLE functionality to one of my existing product. I product will play the central role for which I am thinking to use nRF51822 based module.

I learned that central can be developed using softdevice S120. My ... (more)

21
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## How to disable buffer in Nordic Uart Service?

I'm trying to replace a RS232 cable with a BLE bridge with the Nordic Uart Service.

One nRF52832 configured as central (app_uart_example_central) and an other one as peripheral. The connection is working well with putty or the nRF connect ... (more)

18
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no

## nrf52 DFU package with SD+BL+APPS fails to reconnect on iOS nrfToolbox after updating SD+BL

We're seeing an issue where a dfu package containing SD+BL+Apps gets stuck on iOS nrfToolbox during DFU process after it updated the first part 1/2, which is BL+SD. The same dfu package works on the ... (more)

57
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1

## printf() in Keil over Debug / ITM / UART / RTT, nothing works

I've been trying to for two days. Using nrf52DK, SDK12, no SD, Keil5.

All I want is to get printf() to work over ITM/SW/Debug, I'd even accept RTT if I had to. I can't seem ... (more)

30
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1
vote
no

## s132 softdevice + example code not working

Hi, I’m having some troubles with example code : ble_app_uart_s132_pca10040. The code compile well in Keil and I can prog it in the nfr52 but it doesn’t run. When I check the code step by step in debug session ... (more)

43
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no
1

## state-machine RTC synchronization with softdevice

Hi,

I’m working on a device that requires to enable the softdevice when connecting with a smartphone via Bluetooth and disable it when acquiring data from an analog source.

In order to do this I have created a simple ... (more)

31
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no

## In the MPU6050 module, when the ACC, GYRO data update, INT pin can not produce interrupt signal

NRF52832 S132 MPU6050 TWI

I want to finish the function:

1. When the ACC, GYRO data update, the INT pin to generate an interrupt, and then in the P026 pin configuration falling edge trigger GPIOTE interrupt,and then read the ACC ...
(more)

23
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1

## Can nRF52 SDK TWI master write a series of registers

I want to save precious CPU cycles by writing 40 i2c (TWI) registers in one shot. Can I somehow set up the TWI master to write 40 registers (each 16-byte address with 8-bit data)?

Further, can this be done for ... (more)

25
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2
1

## How look ram size in .map file?? use eclipse

Hi,

how i can look ram size in .map file?? use eclipse

attach the file HKlock.map

98
views
no
2

Hi, I am using SDK 11 , nRF52 DK . IAR 7.5 In current implementation I am flashing a sofdevice s132 and the bootloader by the nrfjprog.exe but if I am flashing the app this way it is not starts ... (more)

12
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no

## On the mpu6050 module, the configuration Data y Ready interrupt is not successful [closed]

NRF52832 S132 MPU6050 TWI
I want to finish the function:
1. When the ACC, GYRO data update, the INT pin to generate an interrupt, and then in the P026 pin configuration falling edge trigger GPIOTE interrupt,and then read the ...
(more)

31
views
no
no

## SDK13 BDS error in bds_uint8_array_decode?

Hello,

I am just using the SDK13 on the nRF52832 together with the experimental BDS example (I modified it to the point where it seems to be working fine so far).

Now when using uint8-array as data-type for a writeable ... (more)

41
views
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1

## How to enable and use RTC0, RTC1, and RTC2 -- nRF52832

I am currently using nRF52832 with SDK v11.0.0 and S132 v2.0.0. I'd like to enable either RTC2 or RTC0 as a dedicated counter for the keeping track of time (LFCLK). RTC1 is already designated for ... (more)

60
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1

## NRF_ERROR_BUSY from characteristics discovery due to MTU exchange

My problem seems to be related to this unsolved question.

I've making a central application to connect to my peripheral but I'm having a hard time getting the service discovery to work. My central code is based on ... (more)

25
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## SPI MOSI default high? NRF SDK 12.2.0

I am attempting to interface a Winbond flash device with the NRF52. The datasheet does not specify the idle state of MOSI when reading from the device. However, I cannot make the flash chip work with the NRF52. In the ... (more)

68
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2

## NRF52 S123 QDEC sample period - SDK 12.2.0

I am developing an application which involves control of a brushed DC motor with a quadrature encoder. According to this post, in SDK 12.2.0 - which I am using - it is possible to set the sample period to 128 ... (more)

38
views
no
1

hi guys. i'm have a project with nrf52832. i use jlink v8 debuger clone form china, just 12$and have this troulbe in this figure Untitled.png could you help me?. jlink debugger authentic cost 200-300$, it's to ... (more)

63
views
1
vote
1

## Combining examples in SDK13

Hello,

I have a problem while combining peripheral examples in SDK13. I am trying to combine twi_sensor and uart but when I do this in uart folder, compiler gives following error:

> _build/nrf52832_xxaa_main.c.o ...
(more)

50
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## SPI problems sdk13 release [closed]

Just ported from nrf52 project using sd132 v 5.0 to sdk13 release sd132 v4.02

Changed the necessaries and changed to the new ret = nrf_drv_spi_init(&spi, &spi_config, NULL, NULL);

I can no longer get the spi to work. It ... (more)

42
views
2
1

## TWI sensor over UART on nrf52832

Hello,

Now, I am merging my UART code with the TWI sensor example (I use SDK 13). Now my error after compiling the code is:

In file included from ../../../../../../components/libraries/util/app_error.h:57:0,
from ../../../../../../components/libraries/util ...
(more)

45
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1

## ble hangs when UART initialized

Following is the sequence of code

uart_debug_init();

gap_params_init();
services_init();
conn_params_init();

Following is UART initialization code

uart_debug_init()
{
const app_uart_comm_params_t comm_params =
{
7, 8,
NULL,
NULL,
APP_UART_FLOW_CONTROL_DISABLED,
false,
UART_BAUDRATE_BAUDRATE_Baud38400
};

APP_UART_FIFO_INIT(&comm_params,
UART_RX_BUF_SIZE,
UART_TX_BUF_SIZE ...
(more)

25
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no
3

## MCP and phone visibility

Hi,

We are developing weareble with nrf52832 and already made 6 test modules. Everythink works fine except 1 module. This wonderful piece is visible only on PC Win 10 (MCP or our custom testing app). But thats all, this device ... (more)

56
views
no
2

## How to connect temperature sensor to NRF52832 via i2c

Hello,

Here is a newbie question:

I have NRF52832 (sparkfun breakout board) and ADT7410 temperature sensor and, I want to create a data logger. But, i could not understand how to use i2c interface. I think we will assign the ... (more)

89
views
no
2

## Can not find the device

Hi,

I am working on a custom design for NRF52832. The schematic and pcb layout are as follows. However, it seems that I can not get the signal working correctly. Would you please take a look and give me some ... (more)

52
views
no
2

## nRF52832 SPI tagging for multi-channel ADC?

Hi,

I have successfully connected an MCP3004 to the nRF52832 and can assign the ADC channel 0 output to a characteristic value. Works beautifully.

However, there are three other channels I want to use on the ADC for other sensors ... (more)

44
views
2
1

## How to recover bricked nRF52832 with ST Link?

Hi,

I was trying to write the s132 SoftDevice from the nRF5_SDK_13.0.0 onto the Sparkfun nRF52832 breakout via OpenOCD and an ST-Link v2 debugger. The SoftDevice flashed and verified successfully. After reset, I am not able to connect ... (more)

509
views
2
2

## nrf52832 1.8v, external and internal dc/dc

Hei guys,

for a new custom board based on nrf52832 where i have to minimize power:

• have an external Li-Po battery, with a cutoff @3.0v, so the range will be 4.2v-3.0v
• want to bring Vdd to fixed ...
(more)

79
views
1
vote
1

I am using a usual uart to bluetooth application and it works great, but I would like to set this application to be a known apple midi device, it seems I only have to add a specific service.

According to ... (more)

#### Statistics

• Total users: 22277
• Latest user: Sherryl Cardoza
• Resolved questions: 9667
• Total questions: 23073

## Recent blog posts

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