Questions tagged [microcontroller]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0
votes
0answers
5 views

Spi communication between stm cortex m3 and MCP2515 [on hold]

I am using stm32f103c6 micro controller where an external MCP2515 ( standalone CAN) is connected through SPI bus. I am having a single threaded code which is scheduled in a loop with very less time(...
1
vote
1answer
25 views

Is it possible to read and write to the uC registers via UART

I wonder if the microcontroller register can be accessed(R/W) via UART , given that the controller has a UART interface. I've been searching for a while but didn't find any examples. Looks like it's ...
0
votes
0answers
38 views

Error running Code Composer Studio on Ubuntu 19.04

This is my log error file: !SESSION 2019-08-31 21:37:26.397 ----------------------------------------------- eclipse.buildId=4.8.0.I20180611-0500 java.version=1.8.0_112 java.vendor=Oracle Corporation ...
1
vote
1answer
21 views

How to format a USB which uses attiny85 based microcontroller and has been programmed

I am making experiences on the Digispark USB with attiny85 micro-controller. So I programmed it so it can launch very basic keyboard strokes when plugged, i.e, when it is plugged, it open it tries to ...
1
vote
0answers
31 views

How to send data from an MCU over a proxy network

My ultimate goal is to be able to send data from my various microcontrollers over a network that has a proxy firewall. I tried changing the firmware of the different MCUs to support proxy but that ...
0
votes
0answers
12 views

How does CAN communication know to decode as little or big endian?

Specifically I am looking for a 29-bit transmitter under J1939 standards. I assume there is a section dedicated to identifying which order was sent in the hearder, but I can't find anything in the ...
0
votes
0answers
27 views

Sparkfun edge message communication error

Recently I posted this question in Stack Overflow. However, even after a bounty, nobody helped me. Although I know that cross-posting is discourage, I come with good intentions and I think that this ...
0
votes
0answers
21 views

St Link v2 unable to connect (using Arch linux OS )

IMAGE LINK: https://ibb.co/yfFvwQP I am using Arch Linux as my main os. I have just started embedded dev and am setting up my env. I am having an error connecting to my St Link V2 debugger as shown ...
0
votes
0answers
16 views

ESP8266 Serial USB adapter doesn't work on Ubuntu

So I need to program a little ESP8266 microcontroller with the Arduino IDE. But the board which is connected with a Serial-to-USB Adapter won't get detected by my Ubuntu system. The adapter: https://...
1
vote
1answer
25 views

Problems using USB-ASP

I am trying to upload some code to my MCU ATMega 32a using an USB-ASP programmer and extreme burner software. I am just using some dummy code, but everytime I try to burn it, the extreme burner shows ...
0
votes
0answers
84 views

SD Card Single Block write

I'm presently writing the code for SAMD20 micro-controller and SDCard. I'v successfully written code for single block read and multi block successfully. I'm testing my code with San-disk 16 GB SDCard ...
3
votes
3answers
29 views

Visual Studio and Structures

I’m trying to port an application written for a micro to Visual Studio so I can more easily run the debugger and scan through the code, rather than debug on the chip which is a bit of a pain when you ...
0
votes
0answers
28 views

Write to a SuperIO memory to drive a PWM

I am using a asus N71JQ (came out ~2010 with win7) which did not came with backlit keyboard. I found that some very similar laptops (asus G73JH and G60) have exactly the same keyboard but with ...
4
votes
1answer
162 views

Allowing a microcontroller device to connect to a Citrix XenDesktop instance

What we're trying to achieve We wish to connect a microcontroller, Adafruit Circuit Playground Express (CPX), to the USB ports of the thin client and stream data to the virtual machine environment to ...
1
vote
3answers
198 views

No filesystem is same as no Operating System?

Some legacy computers/controllers don't have the filesystem with them is that because these devices don't have an Operating System? If files cannot be saved to these devices, how can the factory ...
0
votes
1answer
40 views

What are the implications of “strain on the memory controller”?

Numerous articles and postings advise using as few memory sticks as possible, and/or using registered memory for configurations with many sticks, citing "strain on the memory controller". I am ...
-1
votes
1answer
2k views

Linux run on ARM Cortex-M4 MCU

I own NUCLEO-F334R8 board, based on STM32F334R8 ARM Cortex-M4 microcontroller. It's 72MHz board without MMU, 64KB flash, 12KB RAM. I can connect it with external flash and RAM. ucLinux is Linux ...
3
votes
2answers
1k views

Linux: connecting to a USB virtual com port without root access?

I am trying to connect a microcontroller to a host computer using a USB virtual com port. However, I do not have root privileges on the host computer. The controller shows up as /dev/ttyACM0. When I ...
1
vote
0answers
64 views

Getting Clock/Time information from PC to an STM32F4

Assume I connect a microcontroller board (like an STM32F4) to a PC via USB. Is there anything in the USB communication protocol that contains host clock data? In other words, can I sync the ...
0
votes
2answers
127 views

Can HTTP servers on a LAN be hacked into from the web?

I have set up a web server on a ESP8266 microcontroller inside my local area network. HTTP GET requests sent to this unit can switch on and off a mains outlet, and I'm planning on deploying a couple ...
1
vote
0answers
406 views

Emulating laptop internal keyboard interface

[topic background] I have several older laptops (MFG 2000-2003) that have a missing keyboard. I`d like to test them if they are in working condition. All of them are in CMOS mismatch state (need to ...
21
votes
4answers
16k views

Do desktop computer motherboards have GPIO? If they do, how to read from or write to them

I've seen some pins like microcontroller's GPIO pins on the desktop computer motherboards for a couple of times, I wanted to know, first, are they really GPIOs? if yes, is it possible to read from or ...
0
votes
1answer
962 views

Is an Arduino microcontroller capable of detecting its own pins that are connected with each other?

I have a matrix and I want to connect it directly to Arduino without using IC. I want that whenever I connect two pins in Arduino microcontroller, example: pin1 and pin2, the microcontroller will ...
0
votes
0answers
96 views

Network adapter slow - Windows 7

I'm having problems with my internet speed when connected to a PLC. I'm connected to the PLC with an ethernet cable and to the internet via WiFi. The LAN adapter has a static IP set but I don't get ...
0
votes
1answer
494 views

Differences Between Microcontroller and Device Controller

Is a device controller also a microcontroller with more functions? I know device controller has input and output ports for external device communication but how about communication between device ...
0
votes
0answers
227 views

Long range wireless keyboard / numpad (remote control a computer from a 20-30 meter distance)

In order to illustrate my challenge, I'll explain what I'm trying to achieve. I'm training a young talent in tennis, and she's a real darling. I'm trying my develope the best environment for her to ...
0
votes
0answers
383 views

Unable to send/receive from microcontroller virtual serial port

I have a MSP430 Launchpad (microcontroller) which forms a virtual serial port on my Windows 8.1 rig. Somehow I cannot receive/send any data through this serial port on this rig. I have tried 2 other ...
1
vote
1answer
420 views

i/o Bus Standards & Device Controllers

I'm really confused about bus standards like ide,ata,sata,pci etc. I have just read this article :When a disk read or disk write occurs, where does the data go? So if we talk about hard disk drive; ...
0
votes
1answer
5k views

Getting garbage input and output over serial connection with microcontroller

I am trying to connect to a MicroZed board via USB serial with teraterm on Windows 7, and I am running into some issues. I was able to connect to this exact board using minicom on Linux, but I cannot ...
0
votes
2answers
188 views

Microcontroller web server

suppose A & B wants to communicate through internet, we brought internet from ISP, and their Ip is not visible from remote computer, but then how application like team viewer works on our computer....
2
votes
2answers
3k views

Reading raw data from a microSD card with an Arduino

My microSD card is not working on windows neither on my mobile phone. The card is not recognizable on these devices. My plan is to try to access the raw data on the memory chip using my Arduino. How ...
0
votes
1answer
1k views

Linux Graphic Library for Microcontrollers

I have been working with a lpc1788 (Cortex M3) evaluation board. For some application developement I used a GUI library/tool by Segger, called emWin. Though I have completed the applicatiopn ...
0
votes
2answers
185 views

Serial Communication vs Device Drivers

My understanding is that serial communication is for direct CPU-to-CPU (or microcontroller-to-microcontroller) communication along a serial bus. My understanding is that a device driver is for device-...
8
votes
4answers
9k views

Wake on LAN Alternatives

I realize there are one or two related posts, but none that quite get at what I'm asking. I'm using an old computer as a NAS using FreeNAS, and after some tweaking everything is dandy. The NAS is ...
3
votes
1answer
1k views

single chip computer, microcontroller and embedded system

I was wondering what relation and differences are between single chip computer, microcontroller and embedded system? Are single chip computer and microcontroller the same concept? Is microcontroller ...