Linux is an UNIX like open source operating system written by Linus Torvalds. There is a spin of Linux OS for EE called "Fedora Electronics Lab". If your Linux question isn't electronics-related, ask on one of the other stack exhange sites. Stack Overflow, Unix & Linux or Super User are likely ...

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USB Full-Speed driver's effect on transfer speed

I am experiencing problems with USB communications which seems driver related. My setup involves an embedded device set up as a virtual com port (CDC/ACM) with which I communicate over USB. The ...
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3answers
144 views

A Guaranteed Way to Corrupt SD Card

I am working on an embedded Linux project that it is important to be sure that the file system won't be destroyed when some unexpected thing occurs (e.g., power failure during a write operation on SD ...
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1answer
67 views

How do I go about putting uCLinux on a cortex M7? [closed]

I would like to be able to run uCLinux on a cortex M7 board, but don't know where to start. I've searched the net and found a video demo of somebody who got it to work but no tutorials or anything.
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0answers
14 views

BeagleBone Black Linux Kernel Debugging using Code Composer Studio

I want to use the Code Composer Studio IDE to write kernel modules for my BeagleBone Black. I would prefer to use a Windows host environment. I have an Ubuntu virtual machine, however, I would prefer ...
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1answer
20 views

Practical LabVIEW-free Keithley 2400 front-end for Linux?

Is there a high quality LabVIEW-free gui/interface/front-end to communicate with Keithley 2400 on Linux? Not just for single measurements, but also for various sweeps for practical daily use?
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1answer
25 views

Problem in connecting two BBB via Ethernet!

I am experiencing problems while connecting two BBB(beagle bone black) boards via their ethernet ports. I have seen some reports on problems regarding to the PHY on BBB not detected on power-on. BUT ...
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1answer
24 views

My BeagleBone Black does not turn on other than power LED turns on for a second

The power LED just turns on for a second and turns off. I again tried with power adapter (5V 1A) and the mini USB cable but nothing else happens.
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0answers
33 views

Enabling DDR in SD/MMC causes problems? CMD 11 gives a response, but the voltage switch won't complete

I am trying to enable DDR on an SD card (specification above 2.0). The procedure in the specifications is as follows Execute CMD0 to make the card idle. Execute CMD8 to enable ask about the voltage ...
1
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1answer
52 views

Can I requst data too quickly from an I²C ADC?

I'm getting some pretty noisy data from a 12-bit I²C ADC (MAX11617 to be precise). Though it's most likely some very sub-optimal board layout that's introducing a lot of noise to the analog signal, ...
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2answers
47 views

How do I specify whether to send a CAN bus message on low-speed or high-speed CAN?

I'm a student doing an internship and have to send a CAN bus message to a vehicle. I have no experience with the CAN bus, but it's part of my project so I'm trying to learn. I have to use an i.MX 6 ...
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1answer
55 views

Estimate RAM usage information of an embedded device [closed]

I'm monitoring the performance of an ARM-based embedded device which runs poky linux distro (from Yocto project) which contains OpenEmbedded build system. I need to get the MHz (CPU cycles) ...
0
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1answer
50 views

Understanding a debit card reader through RFID

I work in the bus industry and today I went to a meeting that gave me an idea for a project. In order to start the project, I need to gather a technical perspective of how the product that I saw in ...
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0answers
44 views

USB OTG/device Freescale IMX35

I am using yokto on a imx35 freescale processor. i would like to interface the imx35 as slave with USB OTG (or device , i dont know) , being windows the host computer. the idea is to use imx35 as a ...
2
votes
4answers
92 views

I have three DS18B20's. I can't tell if any of them are working correctly

I have three DS18B20's (or I believe at least two of them are DS18B20's). I am currently reading them through an embedded Linux board (Raspberry Pi in this case). I have two of the sensors in a ...
1
vote
0answers
105 views

Poblems with flashing samd21 xplained pro board

I'm trying to flash the samd21j18a microchip from Linux but I'am unable to do so. I've compiled toggle Led example from Atmel Framework. I tried to flash it using bossac tool and I received the ...
2
votes
2answers
170 views

PICDEM board and Linux connection through serial

TL;DR: I can open screen or putty session in terminal to the /dev/ttyUSB0, but characters ...
1
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0answers
86 views

SGTL5000 codec noise

I built an audio baseboard for an i.mx6 board built by embeddedarm(ts4900). I used the ubiquitous sgtl5000 codec from freescale. While the end result works ok, I find that the output from the line ...
0
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1answer
126 views

Beagle Bone Black interrupts for optical encoder

I'm trying to have my optical encoder work on interrupts. I found some resources online that discuss it but they all seem to be based on an older version of debian since the files and folders in ...
1
vote
1answer
70 views

Sama5d3 fast ADC

I am using Ubuntu 14.04 and the arm-linux-gnueabihf-gcc compiler to compile projects for the sama5d3 explained board and using minicom and zmodem to transfer the compiled source code from the ubuntu ...
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2answers
119 views

How is register access done in case of X86 architecture when there is only In and OUT command for ports?

In ARM architecture the registers of a peripheral are mapped to the RAM so we can access the register using the RAM.
4
votes
3answers
166 views

UART, minicom and ASCII

I am trying to send my name (Ziga) through my micro-controller UART periphery to my PC. GND, Tx, Rx lines from micro-controller are directly connected to the UART-USB converter CP2102 which is pluged ...
0
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1answer
208 views

STM32L0 Snippets with GCC ARM Toolchain

Currently I try to use the STM32L0 microcontroller series. I found that ST offers a low-level C program collection called STM32SnippetsL0 too, parallel with their complex STM32CubeMX based HAL API. ...
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3answers
244 views

BeagleBone Black CAN Bus

My apologies if this is the wrong stack website for this question. We plan to use a BeagleBone Black as the control computer for an electric car. The BBB handles, among other things, communicating ...
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0answers
28 views

BB View 7" screen unresponsive after following proper instructions given

The Official PDF supplied by the supplier regarding Setup of Screen I recently bought a BeagleBone Black C for a mini project. To get the the display I bought the 7" BBVIew supplied by Element14. ...
2
votes
1answer
78 views

SDCC generates invalid programs for PIC 16f628a

I've been learning how to code for PIC 16f628A and I wrote a very simple code to turn on a LED, which is connected to RB0, and keep it on. My original intention was to use SDCC and GPUTILS to compile ...
3
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3answers
158 views

ALT key in Eagle (Linux)

I am facing an annoying problem while using Eagle in Linux. It is not possible to set the desired position of a component while ALT key is pressed. I hit the ALT key to active the alternate grid and ...
1
vote
1answer
302 views

AT+CSQ without Disconnecting PPP Connection in ARCH Linux

I have a Telit GL865 GSM/GPRS module which is connected to a SBC (running ARCH Linux.) via Serial Port. For GPRS connection, PPP connection as indicaten on this page. I want to read Cell Tower Signal ...
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2answers
84 views

Powering a device through GPIO

I have a custom PCB based on imx28 (primary board). It receives external power via a cable. There is another PCB (secondary board) connected via GPIO to the primary board. The secondary board doesn't ...
1
vote
2answers
165 views

Putting Linux on a Lattice ECP3 FPGA

On my Xilinx Zedboard, I booted Linux from an SD card and then ran a Linux application (written in C) from the SD card. This application created a server using sockets that would return whatever is ...
0
votes
1answer
138 views

How to communicate with Keithley devices on linux (without NI VISA)?

Keithley devices let you read/write commands/data over GPIB (examples). LabView has dedicated blocks (VIs) for this purpose, and other wrappers such as PyVISA use the commercial VISA drivers by NI. ...
1
vote
1answer
60 views

Zedboard Linux Socket Application Error

After creating the linux boot image from the tutorial for the zedboard, I tried creating a socket application to talk to the computer. The Zedboard would be the server and the program in visual studio ...
0
votes
1answer
119 views

6Mbaud UART with Bus Pirate V4

I would like to sniff data on an SPI bus running at a clock rate of 6 MHz. I would like to use the Bus Pirate V4 for this task. The sniffing itself is supported up to 10 MHz, the problem is getting ...
0
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0answers
49 views

BeagleBone Timer Trigger

Is it possible to lower timer constant which is 1 ms to microseconds? For example i want my LED to be ON for 15500 microseconds and off for 500 microseconds? ...
0
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1answer
117 views

Burn a HEX file into Brenner8 using linux

I have got a version of Brenner8 called AEI when I try to burn my HEX file into PIC16f877a using command usburn -w -s40 -F16 -Ifilename.X.production.hex I got ...
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1answer
178 views

Connect PIC programmer to Linux

I have got a cheap USB PIC programmer but its CD has only drivers for windows is there ans way to work with it on ubuntu 14.04
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2answers
254 views

“Unable to open parallel port I/O driver” when trying to connect “RS232 to USB” cable on Linux

I have a JDM programmer for pic micro-controllers, but it came with RS232 port. I have bought a "RS232 to USB" cable with its driver for Windows only and I use Xubuntu 14.04 LTS. I have tried ...
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votes
1answer
78 views

What knowledge and equipment do I need to build this device?

OK I am a Software Engineer dealing with both low level and C/C++/Java code with a Masters in Software Engineering but no knowledge of Electronic Engineering whatsoever. I wish to build a device that ...
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votes
1answer
83 views

Detect change on D- D+ lines [closed]

How can i detect change on D- and D+ (puling one or both of them high) USB lines from Linux environment?
0
votes
1answer
82 views

Sync pulse from PC

Can anyone suggest a way that I can send or detect short pulses between a microcontroller and an old laptop with limited I/O functionality. I need to do this every 5-10 sec. The laptop doesn't have ...
-1
votes
2answers
586 views

intel nuc gpio access from ubuntu

I want to implement Interrupt Request via GPIO on Intel NUC d34010wkb. Are there any accessible GPIOs on board and how to access them? If there aren't any accessible GPIOs then what could be a ...
0
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1answer
173 views

Measuring time using an STM32F407VGT6 microcontroller

I'm using a custom board for charging and testing batteries. Its 'brain' is an STM32F407VGT6 microcontroller. I'm developing in Ubuntu (14.04.2 LTS), using ChibiStudio (ChibiOS/RT 3.0 development ...
0
votes
1answer
1k views

De1-soc HPS-to-FPGA AXI bridge

I work on DE1-Soc. I am using a linux BSP (linux console) that i found in terasic's website linux image. I have some questions about the AXI bridge. In fact i would like to send some data from the ...
2
votes
3answers
98 views

Courses about deploying Linux on embedded systems

I am a new grad student in EE and am trying to take full advantage of my time here at the uni. I have always wanted to understand how to get Linux running on embedded platforms, but from the outside ...
1
vote
1answer
146 views

Is it possible to encode a mpeg2-ts video with a FPGA linux core?

I need to take an unencrypted HDMI input, buffer that to memory, overlay it if possible, than encode it as mpeg2-ts and output it to an external device. I could do that with a raspberrypi and an ...
2
votes
0answers
140 views

Linux enc28j60 driver always times out on transmit

I've wired up an ENC28J60 module with an SPI interface to a Beaglebone Black development board running Linux 3.8, but I cannot get the device to TX (or RX) anything. Every attempt to TX times out and ...
1
vote
0answers
106 views

Is there a way to disable an UART terminal? [closed]

I have an embedded PC running Linux (master) and communicating with an external board (slave) through an UART terminal. Only 3-wires are used: RX, TX and ground. The power of the slave board is also ...
1
vote
0answers
327 views

beaglebone black doesn't autoboot when powered over jack or vdd pins

I have a BBB and it works quite well however when I power it over the Barrel connector or over the vdd pins rather then use the usb connection it doesn't automatically boot. When I put the barrel ...
1
vote
1answer
316 views

read all of 256MB NOR flash, but only erase first 139MB from Linux - uboot is all good [closed]

Background: I recently upgraded my 64 MB NOR flash on my PowerPC (P2020) embedded board to a 256 MB NOR flash. (The board has 2 GB of DDR RAM.) I had to decrease the page offset to provide enough ...
0
votes
1answer
221 views

Any Cortex-M3(LPC1768) compilers for Linux? [closed]

Are there any uVision alternatives for Ubuntu/Linux?, i know about LPCxpresso, but i just don't like it and its only for LPC MCUs. i tried Googling and it didn't help, I only saw results about ...
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votes
1answer
534 views

Confused, Is raspberry pi a real device for learning embedded linux or just for hobby? [closed]

and sorry i couldn't think of a better title, please read this so you can understand what i am asking: I already bought the Pi, but as i see it has a fully featured pc like OS, what i'm seeking to ...