13 questions

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115
views
1
vote
1

Power Profiler Kit Offset/Miscalibrated?

Hi there,

I'm using the PPK (v1.1.0) to measure my nRF52 DK (v1.1.1). My sample programm is very simple: set up the LFXO, RTC with 8s CC-periode and the BSP_LEDs:

const nrf_drv_rtc_t rtc = NRF_DRV_RTC_INSTANCE(0 ...
(more)

44
views
no
1

AES CCM 8 byte MIC?

Basically I want to get a 8 byte long MIC when using the AES CCM encryption. From the product specification it does seem like I can only get a 4 byte MIC, is that correct? Or is there some workaround available?

162
views
1
vote
1

[CLOSED][nrf52832][S132 4.0.0] connection fails: exchange MTU request is not received on evt.common_evt.conn_handle=2

Configuration:

(1) 52832 PCA10040;(2) softdevice: s132_nrf52_4.0.2; (3) sdk 13.0.0(4) 52832 configure 4 conccurent peripheral connections:

ble_cfg_t ble_cfg;
memset(&ble_cfg, 0, sizeof(ble_cfg));
ble_cfg.gap_cfg.role_count_cfg.periph_role_count  = 4;
ble_cfg.gap_cfg.role_count_cfg.central_role_count = 0;
ble_cfg.gap_cfg ...
(more)

68
views
1
vote
1

The peak current of nRF52832

Hi,

The spec(nRF52832_PS_v1.3.pdf) said the peak current of TX/RX is 5.3/5.4 mA.

However, I use the PCA10040 board and the ble_app_template(SDK 12.2.0) sample code to measure the peak current, the ... (more)

172
views
4
1

How can I reuse this library into TWI library in nrF52?

Hello all,

They both make use of either SPI or ... (more)

52
views
1
vote
2

Apply the patch from the unzipped SDK folder

Hello.

I'm working this : https://github.com/NordicSemiconducto...

In Chapter: Compiling the connectivity .hex files

2.Apply the patch hex/sd_api_v<x>/SDK<ver>_connectivity.patch from the unzipped SDK folder (e.g. git apply -p1 --ignore-whitespace /repos/pc-ble-driver ... (more)

69
views
no
2

Powering down RAM sections increases current

Hi, I am trying to measure (and reduce) the current consumption of my board. I am using nrf52832 (64K RAM) for my development. The RAM layout is as follows: RAM (rwx) : ORIGIN = 0x20002080, LENGTH = 0x2EA8. Stack is 2048 and heap ... (more)

74
views
3
1

Is it possible to have a second UART on nrF52?

Hello,

I would be interested on knowing whether I may have a secondary UART on the nrF52 chip or not. I would like to communicate my nRF52 with a RN2483 and this is done through UART, however I see that ... (more)

81
views
no
1

Compiling ‘RTT_Syscalls_KEIL.c’ ->rt_sys.h: No such file or directory

Hello,

I am trying to compile the example ble_app_eddystone with the SDK12.2 for the nRF52_pca10040_s132

While compiling with SEGGER I get the error

Compiling ‘RTT_Syscalls_KEIL.c’

rt_sys.h: No such file or directory

I think that the path is ... (more)

56
views
1
vote
1

What are the right memory mapping for nrf52 & SEGGER Embedded Studiov3?

HEllo,

I am trying to compile for the nrf52 one of the examples that are included in its SDK12.2, to be precies, I am using experimental_ble_app_blinky_pca10040_s132, I have been able to compile it with KEIL but now I would ... (more)

225
views
1
vote
1

Current consumption NRF52

I'm struggling with current consumption. I need my device to completely sleep and leave only the RTC on when the ext power is off (run on battery). After making sure my RTC was actually working, I ran the following ... (more)

86
views
3
1

How to add flash programming algorithm for softdevice?

I'm trying to program my nrf52832 with an ST-LINK /V2. I can't get both the softdevice and my app on the chip.

Flashing each one seperately works fine but then when I flash my app (after flashing the ... (more)

87
views
no
1

Current measurement on the PCA 10040 v1.1.0 (NRF52)

Hi,

I was reading the procedure to prepare the NRF52 DK board for current measuring and some questions came into my mind. I understand we have to open the P22 so we interrupt the circuit to measure the flowing current ... (more)

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