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I am trying to record data from ADC to a SD card every 500ms using nrf52832. I am following the fatfs example. Before I had a problem whereby every approximately 10s I would lose a few samples from ... (more)
I am having problems in getting the low power mode in SAADC to work. If I enable it in the config file then the ADC doesn't run anymore.( Blank in the RTT viewer) I have four channels ... (more)
Hi There, i am new to nrf51822 and new to program this kind of controller.I searched over the website, I couldn't find a good introductory documentation for programming the nrf51822, specifically the nrf51-dk. i have two problems 1 ... (more)
Hi ,there i have tcrt1000 optical sensor wants to interface with nrf51822 so can anybody provide me the tutorial on this things with a code... cheers, Abhijeet
i need to connect 8 DC motors to it,using PWM channel.It is possible to connect with it
examples are given but how can we apply them as per our requirement
I am using NRF52832 boars s132 and sdk is 13.1. I have developed my application is read analog accelerometer valie and send to mobile apps. Now i want to also battery indicator in my android apps. So how ... (more)
I'm trying to sample the 4 of the analog inputs on the nrf51822 at upwards of 10kHz and get the data out some how. Currently I'm using printf statements but that starts to break down around 500Hz.
Does ... (more)
I am developing a product where I need to read a signal from an SPI ADC and send remotely to a receiver. This will be powered of a coin cell. I see that the NRF51422 is low power, but I ... (more)
Hi there, I was trying out the ADC example which is sampling 10 times the ADC and then generating the event NRF_DRV_ADC_EVT_DONE to process the data. I extended the handler function to also react to event NRF_DRV_ADC_EVT_SAMPLE. But this does ... (more)
How many concurrent connections can be made with NRF52840 at one time? How many broadcast connection or message it can receives at one time ?
What is PWM channel and what does it indicates?
What is advantage to have more PWM channels ?
I am using SDK 12.02 with softdevice 130 and having a odd issue here.
In my application, I want to advertise ADC value via beacon and to report the ADC value via serial. In this design, I intend ...
I need PCB reference designs for NRF52840. Please could you guide me about it ?
Please check the file attached in the attachment section. I am trying to compare NRF52 series chip. Please correct me if I am wrong and please add the missing values of NRF52810 chip.
This table will be good help for ... (more)
I'm relatively new to development on the nRF52832 and I'm trying to find information on how to use the sleep mode with the SAADC.
Goal: The micro should be in sleep mode until an event is triggered - this ... (more)
I want to know what kind of antenna nordic recommend to use with NRF52 chips.
Please could you guide us about it. We are interested in some sort of table where we can check and compare the antenna sensitivity ... (more)
what is the maximum length of broadcast data that NRF51 beacon kit supports?
good morning to all I wanted to ask if anyone has a design of nrf51822 where an external temperature sensor is used, to know how the connection to the chip is. Should I buy a sensor with an analog output ... (more)
Need you suggestion regarding our use case but first I would like to explain about our use case.
In our use case there be beacons and receiver. Beacon we are considering using Nordic NRF51 beacons. On the receiver side ... (more)
We can currently nRF51822 beacon kit. I want to know that do you have other beacon kit which have high range and in this large broadcast data can be broadcast ??
What is maximum range and broadcast message length of ... (more)
I need you suggestion / information about Nordic chip. We currently have nRF52 (nRF52832) chip. However, in our application we will be using Nordic beacons as an transmitter and we already have nRF51 beacon kit and on receiver side we ... (more)
I am using nRF52832 s132 soft device and i have read accelerometer adc 3 axis value with sample rate of 244us instead of ms. For controlling my device i have send start command via Nordic tool box uart mobile ... (more)
I am trying to use a mux change among 3 differential channels. The diff signal then goes through an instrumentation amplifier. The steps I'm using:
switch to ch1, read adc1, wait 3ms switch to ch2, read adc1, wait ... (more)
I have Nordic NRF52 DK. What chip does it have? because there are quite many chips of NRF52 series and can you also tell me about the PCB reference design of the chip?
I am writing a program in Keil whereby I have to send a large amount of data through BLE notification in real time. The program works by having two timers, one timer is used for the ADC to ... (more)
https://github.com/NordicSemiconducto... I have flashed the above program in the link on to my nrf51822 DK. I can see the values of the samples but i do not understand what the output is. The analog pin that is ... (more)
I'm currently developing an application on nrf52832 that'll use SAADC low power to fetch battery voltage level and report that value on BLE advertising data. I've adapt github example nFRF52-ADC-examples to the following:
#define REFERENCE_TO_MV 0 ...
Hi - In my app, I'm using Bluetooth, the ADC, the TWI, and the SPI. The general idea is to measure lots of things, store the data in SPI NOR FLASH, and occasionally flush some data through BLE. All is ... (more)
I'm starting to work with a new ADC that I need to drive with an external 4MHz clock that I will need to drive with my MCU. Is there a way to set up a pin to passively ... (more)