Questions tagged [microcontroller]

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Swapping the SSD controller without data loss possible?

Does swapping the controller chip within some ssd always imply data loss, or is it possible that all the relevant information (like translation layer parameters) is stored on the NAND chips? I found ...
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Can I debug with python and GDB my microcontroller?

I would like to ask, if exist a library in python so I can write a tool to debug my controller with GDB and I could implement a way to read some addresses and draw a graphic or something similar?
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How to put Raspbery Pi Pico into bootloader mode from a usb connected PC?

The Platoformio extension for visual studio code is able to put a Pico into bootloader mode via USB. Platormio prints: Looking for upload port... Use manually specified: /Volumes/RPI-RP2 Forcing reset ...
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1 vote
1 answer
70 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 ...
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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 ...
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52 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 ...
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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 ...
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610 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://...
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1 answer
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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 ...
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4 votes
3 answers
50 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 ...
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4 votes
1 answer
271 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 ...
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1 vote
3 answers
746 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 ...
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1 answer
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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 ...
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1 answer
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 ...
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3 votes
2 answers
2k 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 ...
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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 ...
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2 answers
342 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 ...
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1 vote
0 answers
617 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 ...
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26 votes
4 answers
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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 ...
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1 answer
1k 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 ...
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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 ...
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1 answer
677 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 ...
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240 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 ...
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385 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 ...
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1 vote
1 answer
487 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; ...
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1 answer
7k 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 ...
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0 votes
2 answers
210 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....
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2 votes
2 answers
4k 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 ...
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1 answer
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 ...
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0 votes
2 answers
222 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-...
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9 votes
4 answers
11k 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 ...
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3 votes
1 answer
2k 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 ...
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