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External MMU for cortex-M

The Cortex-M processors are getting faster and more powerful. The Cortex-M7 has just been announced. Yet these cannot run Linux (other than uCLinux) because the chips lack an MMU - Memory Management ...
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0answers
66 views

open(“/dev/i2c-1”,O_RDWR) return -1, i2c-1 device couldnt open [migrated]

I have a little problem about my app. Firstly I install package i2c-tools, I give all permission to all user for dev/i2c* files. After, add the line i2c-dev in ...
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0answers
71 views

AVR dragon, Ubuntu and avrdude failed to sync

Don't panic if this seems a huge question, I just tried to add as many details as posible, but I guess most of them can be ignored and still get to the point. I am trying to set up my avrdragon to ...
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1answer
41 views

What are similarities between RTC DS1374 and RTC DS1307

I mostly work in software and not good in reading Hardware data sheets. I need help in understanding the similarities between RTC DS1374 and RTC DS1307,From below link I could make out that both ...
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1answer
48 views

Update ATmega168 program with serial

I'm working with an ATmega168 with a Linux based board (TI DM365). The ATmgea168 communicates with the TI over UART. The Atmel is programmed using AVRMKII and is running fine. I was wondering if ...
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1answer
137 views

How to use k150 pic programmer on Linux?

I'm trying to start with PIC microcontrollers. I bought this programmer: http://www.kitsrus.com/pdf/k150v2.pdf and a 16F628A. But I'm not able to use it with my Arch Linux... How can I do that? Thx ...
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86 views

Beaglebone black i2c-1 file write error

I am using beaglebone black i2c2 pin 19 and 20 of p9. Somewhere in the bet it was told i2c2 has told accessed with i2c-1 in /dev folder. I am booting default amstrom linux from emmc. Hardware is ...
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2answers
144 views

FPGA Systems with good Linux support

I am working on a project using a Xylinx FPGA, board produced by Digilent. More precisely, it is the BASYS2. I have been programming the FPGA using Windows 7 as I was unable to install the support ...
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1answer
102 views

Serial Over IP or USB over IP?

Need to connect remotely to a device using cellular GPRS gateway. Device supports RS-232 and USB. It boils done to two options: 1.- Serial Over TCP/IP (Serial to Ethernet - to GPRS, or Serial to ...
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0answers
32 views

Installation of IceCube2 on Linux

I am trying to install the Lattice IceCube2 software on my linux box (i am using Fedora 20 64bit) but i only get the message that the binary installer cannot be executed. Does anyone know how to ...
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0answers
60 views

Accessing Linux on Galileo [closed]

this is my first time posting. I seem to have hit a dead end trying to access my Galileo’s onboard Linux. I’m working on a Mac OS X. I’ll take you through all the steps I have been: I’ve set up ...
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0answers
73 views

MSP430 mspdebug eclipse plugin showing wrong values

I'm using eclipse CDT Kepler with MSP430 plugin from xpd (http://forum.43oh.com/topic/1419-eclipse-plugin-for-mspdebug-and-msp430-gcc/) on Xubuntu Linux 14.04 x64 I took msp430gcc compiller and ...
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2answers
102 views

Linux-friendly PICs to timestamp an intermittent 4 µs long TTL pulse

I've got an experimental box of tricks -- the console of an MRI scanner -- that spits out a 4 µs long, +5V TTL about every 100 ms, when something interesting happens. I'd like to ultimately create a ...
1
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1answer
112 views

How does UBI determine a NAND flash block is bad?

I understand that if a block erase fails it can be marked as bad. If a page write fails immediately it can also be marked bad. I have a board that shows "read disturb" and/or "program disturb" errors ...
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2answers
128 views

Is it possible to change a USB's enumerated descriptors (from the OS side) after plugging it in?

I don't mean as in change the descriptors built into the device, but the descriptors that the OS has enumerated. Can this be done from the OS side without touching the USB device? For example, can I ...
0
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1answer
35 views

TI TLV320DAC32 vs TLV320DAC33

A board I'm working on has been populated with a TI TLV320DAC32 sound codec. My target O/S is Linux and quickly looking in sound/soc/codecs I see support for the TLV320DAC33. Octopart, DigiKey, even ...
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3answers
555 views

Is it normal to have SPI Clock with varying duty cycle?

I am working to get an SPI interfacing radio module on embedded Linux system. This particular module (RFM12B) is already ported onto Raspberry Pi. Now I am working on OMAP4 based systems. I noticed ...
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1answer
107 views

Xbee configuration with X-CTU on linux

I'm trying to configure an XBee with the X-CTU tool using Wine. I followed the steps given in this tutorial. I plug the USB in and check the kernel logs to see on which serial devices it has been ...
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0answers
45 views

LPC1343 take forever to mount in ISP mode on ubuntu. How to speed up the process? [closed]

When i plug the LPC1343 in isp mode on my usb port on a linux machine (ubuntu 14.04) , i have to wait between 10 and 20 seconds before the mount apeared. After that, i use the simpleflash.py python ...
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votes
2answers
43 views

Quartus II hangs when trying to create new project [closed]

I have Quartus II installed under Ubuntu 13.10. It starts up fine, but when I click "finish" on the "Create New Project" wizard, it loads infinitely, stuck at 0%, then stops responding. I have tried ...
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1answer
169 views

Most reliable Flash memory for an embedded Linux system?

What would be the most reliable Flash memory hardware to use for an embedded Linux system? I.e. one that has the least chance of losing data or getting corrupt when the power goes down? The Flash ...
3
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2answers
137 views

Periodic timer (64Hz) with ARM processor and (embedded) Linux

I want to call a function 64 times per second with a ARM processor which is running linux. (ex: Rasberry Pi or Freescale i.mx6). Ideally, I don't want too much jitter. I want to perform a task ...
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0answers
73 views

NAND: no devices available

I am trying to run FALCON MODE on zynq-microzed board. I am following README-falcon.But when i run nand read 82000000 kernel command, i get this error.. **no ...
2
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1answer
41 views

IEEE 802.11 standard on channels

Could someone please help me find (page#) where in the IEEE 802.11 standard it directly says that Access Points are responsible for choosing the channel/frequency to be used and not clients. I know ...
2
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0answers
34 views

Memory mapped peripheral on NAND bus

I have an embedded system that is not cost effective to roll a custom PCB therefore my access to certain buses are limited. I had the idea of hooking my FPGA up to the unused NAND port of the system ...
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4answers
419 views

USB as a local bus in an embedded system

Is USB a reasonable choice for a local bus? what are pros and cons? what reliability concerns are there? Bus spec device count ~4; peripheral devices are permanently connected to same PCB as host ...
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0answers
64 views

Connection refused on debugging

I'm trying to debug my dev board here, using LPCXpresso v7.1.1 [Build 125] [2014-04-01] , Manjaro linux (Arch based), and a J-link programmer. Every time I tried to debug my program, I got an error: ...
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1answer
178 views

Why Linux doesn't get booted automatically only If I changed the BOOT.bin not the zImage, while in the first case it gets automatically booted

I have zynq board ( not the zedboard), it doesn't have all the peripherals of zedboard. I am facing some problem while booting the linux on zynq with my new BOOT.bin. When I used to put the sdcard in ...
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1answer
68 views

Synthesis of Verilog code in Cadence

I am trying to synthesize my Verilog code, which I wrote using Modelsim tool for 8-bit MAC in Cadence Encounter. The file that is generated after synthesis has to be re-checked for functionality in ...
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0answers
159 views

UART takes some “kicking” to start receiving data

I am using a UART on a single board computer (Olimex A13) and I am trying to send and receive data through the UART. On the send side I have no problems. The Olimex board sends data to the serial buss ...
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0answers
40 views

Enable and access AUART on iMX28

I designed my own PCB with a iMX28. I based my design on the mx28evk board and I use Yocto + Linux kernel 3.12 + the devicetree for iMX28EVK. Because my design is not the same than the mx28evk, I ...
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1answer
142 views

checking uart overrun and framing error flags in linux

Checking uart overrun and framing error flags in linux. In some microcontrollers I can access overrun and framing error flags programmatically. Is it possible to access these flags from command line?
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1answer
301 views

lpc1343 upload firmware via UART bluetooth module from linux

I am a novice to BT so I am looking for some advice. My LPC1314 has a bluetooth module soldered to its UART. I believe the BT module is a HC-06. I want to use BT to flash the firmware.bin to the ...
3
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2answers
581 views

Move embedded programming from Keil to Linux

I'm currently using Keil to develop for an STM32 discovery board. My project is close to finished, and I'd like to move to a Linux based building environment. I've been using the preconfigured ...
3
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2answers
113 views

Linux Circuit Software To Calculate Power Dissipation

I am a bit new to this whole circuit simulation software, so I was hoping someone could share their years of experience with me to help me weed through this seeming jungle of software-packages. I ...
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2answers
654 views

STM32L-Discovery programming on Linux with Eclipse

my problem is following. How to configure Eclipse + ARM in order to code for this microcontroller? I installed Eclipse and ARM plugin for it but I can't understand what to do after that :(
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3answers
101 views

Pin IO for a computer running Linux [duplicate]

I'd like to control a few input pins (say 5) and a few output pins (at least 2) from a computer. The computer has no parallel port. What is the best way to do this? USB-to-parallel adapter (anybody ...
1
vote
1answer
223 views

If a controller has MPU, will it run Linux efficiently?

I have an EFM32 board having Cortex M3. This board is having an Memory Protection Unit. Will it be a good idea to port Linux on it? I am discouraged because of this answer: Linux on ARM Cortex-M3 ...
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2answers
2k views

Data lost writing on Arduino serial port. Overflow?

I have an Arduino connected to a linux box (a Raspberry Pi). I'm reading an analog pin and writing it out with Serial.println() together with the value of ...
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0answers
55 views

Which will boot faster: FreeRTOS or MuCLINUX: need general guidelines?

Are there any general guidelines/thumb-rules to select OS? I have to port it on Cortex M3 based chip. Which OS should be selected: FreeRTOS or MuCLinux if I want the boot time minimum?
1
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1answer
593 views

Connect Marsboard with Touch Panel and access GPIO pins

I am thinking about using a MarsBoard A10 and LCD Touch Panel for low volume commercial product but I have to confirm some capabilities first. Firstly, what would it entail to get the Marsboard A10 ...
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0answers
99 views

Using GNU/Linux as an Electronics Engineer? [closed]

Are there many companies that provide a GNU/Linux environment for their electronic engineers?
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0answers
109 views

How to “read” SSD LED display by sniffing it's i2c communications with master?

Firstly I apologise if this question is more of a Raspberry Pi/Linux question but I've scoured the Raspi/Linux stack exchange boards and googled until my fingers fell off so I'm trying here in the ...
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0answers
113 views

PCIe card powered but not recognized on custom interface

I have a black magic declink mini recorder card that I am trying to recognize on a small form factor linux machine (debian 3.2.46-1 x86_64). I have made a custom interface board with what I think are ...
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0answers
205 views

Sniffing SD-card

I have the BeagleBone Black and HackHD camera. The camera stores its video on an SD card. How would one go around to pick up a file being written to HackHD SD card on BeagleBone (or any other embedded ...
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1answer
130 views

Enabling uClinux to run on Altera DE2-115?

I'm trying to learn Qsys and Quartus II to define a system that can run linux according to this document: http://uuoc.org/uClinux_nios2_custom_hardware.pdf But I'm running into problem as the ...
1
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1answer
304 views

Virtual display for simple GPU development

Related: Where to start when considering making a GPU? I'm a pretty strong programmer, but I'm very new to hardware design, so apologies if I use strange terminology. My long-term goal is to ...
2
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0answers
269 views

Raspberry Pi with SMBus SmartBattery

I'm trying to interface a Raspberry Pi with the mini-box OpenUPS. It claims to implement the Smart Battery SMBus specifications. I can read data from the device using the i2c_smbus_read_word_data() ...
1
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1answer
335 views

AVR-GCC: Ports Undeclared when compiling

My Setup I'm running Ubuntu 12.10, and I want to be able to use gcc and avrdude to compile and program my ATmega328. I followed this Ladyada tutorial: Ladyada AVR Tutorial Everything installed ...
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40 views

Will this RAM bypass interfere with linux's total memory count? [duplicate]

As the patent in this question shows, it may be possible to hijack a computer by bypassing the memory controller. If it's true that it only hijacks part of the RAM at a time, does that mean that it ...