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I connected the nrf module to jlink as described:
• vdd(nrf)-----3.3V • gnd(nrf)-----gnd • SDO(nrf)-----SWDIO(jlink) • SCLK(nrf)-----SWCLK(jlink) • 3.3V------VTref(jlink) • gnd------gnd/pin20(jlink)
After executing jlink.exe I receive the following VTref ... (more)
This is probably a sign that I should upgrade to nRF52 (with a built-in FPU) but, in the meantime, does anybody have an example of the libfixmath library integrated with an nRF51. My attempts, so far, have resulted in compilation ... (more)
EDIT: I used a workaround to get my project working but my question still remains. I just used the template project to send data to my app and manipulated the received data inside the app. I must say I was ...
I am following below step for Installing micro_ecc_lib_nrf52.lib.
Install version 4.9-2015-q3-update of the GCC compiler toolchain for ARM. You can use ARM's Launchpad to find the toolchain for your operating system. - DONE
Make sure that make ...
Lately I have been struggling while trying to run "BLE Advertising, a beginner's tutorial". My hardware consists of NRF51822 and PCA1000 dongle. I use SDK_11.0.0 and the example provided at github https://github.com/NordicSemiconducto ... (more)
How much memory will be consumed by softdevice s132 and s130 in Flash?
I am having hard times to make SAADC working on DK-52, SDK13, S132. I need to perform a voltage measurement on command received from a connected device.
AIN pin is connected as in the following picture:
I also have ... (more)
and how to hijack nrf51422 with nrf51822 custom board using nrf51DK
I forgot my current password of my Gmail account. I also don't add any recovery information in my Gmail account and this account is very important for mine. So if anyone has the solution for my problem please tell ... (more)
Hello. I am developing a project on nRF52832 using SDK 13, in which I need to transfer up to 300 bytes of data from iOS device via my dedicated app (in the background) to nRF in 10 second cycles. Project ... (more)
I encountered a crc check error when update application via bootloader. The SDK version is 12.2.0. I found that this error is related to watchdog.
In the beginning, I add watchdog initialization code in application and add ... (more)
Hi I use SD310 and nRF51 in SDK10 and The Ant is set HRM_MSG_PERIOD_1Hz.
I integrate a heart rate module by I2C and the heart rate data is only all I got.
But the Cell Phone Ant Plus Sample App ... (more)
Issue: XOSC16M is not Starting and the loop stuck forever in below line
where it checks CLKLFCTRL 's 3rd bit to confirm is XOSC16M is active or not.
PCB Design Detail
Hi, can someone tell me what chip this is and where I can find the data sheet? Or at least if this is a custom fabrication, what chip from Nordic is it based off of? Thanks!
My scenario is the split keyboard which has 2 parts: left-hand part and right-hand part. Each part has a NRF52832. I am willing to implement the left-hand part to be a BLE hid keyboard and also connect right-hand ... (more)
Any update on possible when Nordic can update the Plugin to support SDK13?
I was informed that the Nordic Semiconductor v1.2.2 plugin does not support SDK13.
Although I see there is a description under SDK13 that indicates it works. Here
If I used a nrf52840 bluetooth5 as a server, but customers have iPhones with Bluetooth 4.x on, will the range still be 2x or 4x, as stated by BT SIG?
Did Nordic test the range with Bluetooth 4.x ... (more)
Designing a custom pcb, we have a few questions, and maybe you could help a little bit.
On this Nordic design ,before proceeding to layouts :
I'm setting the eclipse developement enviroment without makefile provided by Nordic.
But following messages apear at linking phase..
C:/Users/isp40/OneDrive/Keil_projects/nRF51/nRF5_SDK_11.0.0_89a8197/components/softdevice/common/softdevice_handler/softdevice_handler.c:442: undefined reference to `__data_start__' C ...
Isn't it possible to debug the STM32F MCU by using PCA10028 J-Link OB??
Hi, I am using NRF52 DK board. I use nrfjprog under windows to flash controller. But i want to flash under ubuntu. I searched but i found one .rar file.i extracted but there were not executable to run. some ... (more)
The basic question is: if I initialize the SD and then forcibly change the priority of the WDT IRQ to zero via NVIC_EnableIRQ(), will that cause a problem?
I know you don't normally want to do anything which might ... (more)
I am creating a BLE peripheral device which I want to test using the automated testing feature of NRF Connect. I have connected a android phone to my windows PC and the phone has NRF connect app installed in it ... (more)
hi i am working on MMA8652 i am working on mma7660 twi example in sdk11 for nrf52. i have changed the registers as the same way the MMA8652 need. here is my read ... (more)
I am debugging an SSD1306 OLED library, and in the datasheet, it does not explicitly mention support for repeated start bits. But using the nrf_drv_ API's with
NRF_DRV_TWI_FLAG_TX_NO_STOP flag set, the successive
nrf_drv_twi_xfer function starts sending ... (more)
Hello! I'm calculating the matching circuit with the antenna for nRF52832, but nowhere can I find the impedance value of the pins of the radio part, can you help me?
I understand part of ram is used by the softdevice, but I see different addresses are used in different examples that use the same softdevice, namely S132. For example,
in ble_app_hrs/pca10040/s132/armgcc/ble_app_hrs_gcc_nrf52.ld, RAM (rwx) : ORIGIN = 0x20002c38 ... (more)
I am having trouble with DFU. When I try to send new application via NrfConnect, device goes to bootloader, but file transfer is not starting. Only when I reconnect and try again, while device is in bootloader, transfer goes ... (more)
In my nRF52832 base-board, I don't have any leds and buttons. I use Keil v5 and I used ble_app_uart_pca10040_s132. I copied pca10040.h as custom_board.h and replaced BOARD_PCA10040 with BOARD_CUSTOM in proprocessor symbol. when I removed led definitions ... (more)
I use STM32F4+nRF51822 through the SPI interface. I want to achieve nRF51822 DFU with SPI operation, now upgrade the simple LED to work properly. But can not work when using Gazlle. I know it is because the interrupt vector ... (more)