Questions tagged [linux]

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

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Is uCLinux support ARM Cortex M0?

I just do some Google Search about this and it just shows me something like uCLinux on Cortex M3,4. Is it possible to run uCLinux on ARM Cortex M0? (And how? Please give me some reference for that.) ...
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What is it called when a WiFi chip advertises its own SSID so users can connect

I am not sure which stack should I post this, but here is my question: when you buys these WiFi-enabled gadgets, when they turn on they advertise a SSID where you can connect to it and enter your ...
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59 views

Image processing on alinx board

I'm trying to use the Alinx board to get images from industrial cameras, process those images, and determine the size of the object showing in the image. I'll read the image using USB (from the PS ...
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How to connect IO-Link sensor to a Linux running machine?

Some sensors I need to use have IO-link interface. Our infrastructure in Linux based (RPi, Jetson and servers with Intel CPU), and we could integrate device that communicates via Ethernet, RS232, I2C, ...
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1answer
87 views

USB to RS485 converter on Linux [closed]

I have a USB to RS485 converter: It has a CH341 chip, that is all I know about it. When I plug it in, I can see that it is bound to port ttyUSB0. I want to be able to send and receive bytes from PC (...
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31 views

bias-disable vs bias-high-impedance GPIO in Devicetree

What is the difference between bias-high-impedance and bias-disable? I would like to completely deactivate some GPIOs that are causing conflicts on my board. I have two pins acting as default as I2C. ...
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1answer
38 views

What are the display parameters for a TFT LCD?

I want to use this display with a system on module running Linux. I need to configure the device tree below with the parameters for the display so it will work properly. A description of these ...
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13 views

pyupdi 1s timeout in readline

I just installed pyupdi and it works, but is very slow. I googled this and AVRfreaks says something about delay settings which seems irrelevant in my case (while ...
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13 views

pymcuprog AvrCommandError: AVR response DAP command failed

I am trying to use pymcuprog with Atmel-ICE and a trivial ATtiny406 board. The Atmel-ICE and ATtiny406 board are working fine together in Atmel Studio. For Linux, I ...
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69 views

Moving from LTspice to Ngspice

I wrote a python script that automatically generates and runs LTspice netlists. It runs perfectly on both Windows and Mac. Few ...
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2answers
108 views

PCI express devices are required to support MSI: what does that mean?

I am a bit confused concerning an issue I had with a PCI Express (PCIe) card used to interface serial device on a Linux computer. The card is based on the XR17V354 chip from MaxLinear. From the ...
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Embedded Linux Project on Qualcomm Snapdragon S2 (MSM8655)

I have my old blackberry 9900 device, I am interested to start a project of modifying and installing linux inside. To do so I need user manual of the processor (which is turning out hard to find) even ...
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83 views

Why don't I need device drivers for a UART to communicate with a Linux box but need device drivers if USB is to be used for communication? [closed]

I have a Linux box. I want to troubleshoot certain things and I was told that I need to custom solder pins to communicate using UART as perhaps it doesnt have device drivers to communicate using a ...
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28 views

How to add simulating files on oregano simulator

I would like to start simulating electronics by using Oregano software on Linux Mint. From my experience, once installed oregano and gnucap ...
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52 views

MIPI display driver qualcomm APQ8909W

We are tring to brinup a new display for a Qualcomm APQ8909W chip that's running Android 8.1. From looking at the kernel log during boot I can’t seem to see what display driver is being used/...
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61 views

USB device detection problem on a Raspberry Pi

I have a device constructed from a Raspberry Pi 3 B and an AVR based USB device. The interconnection of these components is depicted in this picture. When RPI is on, data lines of keyboard will be ...
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56 views

Using UART protocol in De1 SoC linux UP distribution from intel

I cant find any example of this, in the "Linux on DE series board . pdf" theres an example with Leds, and in "DE1 SoC computer ARM . pdf" theres an example for UART but is not in ...
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64 views

STM32F769I display not showing framebuffer content

I am trying to get video to work on STM32F769I device. What I have done already is that I have changed the device tree so it has the required support and enabled the kernel features required for it to ...
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44 views

Configuring UART pins on Beaglebone Black for CAN Interface

I have been using a CAN/RS485 Cape for prototyping CAN control of a motor. I am now in the process of bringing up some custom hardware. I have a CAN Transceiver SN65HVD230D on this custom cape that is ...
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317 views

FT232H/FT2232H mount as /dev/i2c-x

SBC like Raspberry have the 40 pin header which contains a I2C master. This is a accessible via /dev/i2c-0. I would like to achieve the same thing on my linux laptop (ubuntu) using the FT232H chip. I ...
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21 views

SAMD20/21 development on Ubuntu without IDE

As someone who is trying to break away from high-level APIs for embedded development, I wanted to try out programming Atmel's (or Microchip's) SAMD20 or 21 mcus directly without any IDEs or tools ...
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3answers
176 views

Electronics before Linux [closed]

I have been learning about the basics of electronics, and reverse engineering hardware using UART connected to my computer. I find it interesting how I can access the busybox which is Linux and then ...
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1answer
53 views

Can not launch u-boot spl

I bought some SOM modules with AM335x on board (PH8700). The SOM is completely blunk (both eMMC and EEPROM). So I have to build u-boot spl first and load it via XMODEM. The problem is that u-boot spl ...
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1answer
205 views

How to flash binary code to the NUCLEO-F207ZG device?

When I want to upload a binary file executable.bin to the STM32F407G device, I connect it to the PC using the mini-USB cable and execute the command ...
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1answer
136 views

How to flash a large binary file to the 512-Mbit Quad-SPI memory of the STM32F7308-DK board?

I have a STM32F7308-DK board: I want to upload my custom binary code.bin for the board to execute it and display output on the screen. For that, I downloaded and ...
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1answer
56 views

What does it mean to send CAN messages at 10Hz or 100Hz? Is this configurable on Linux SocketCAN

I understand the meaning of message transfer speed, i.e. a theoretical maximum of 1Mbit/second, and the 8Mbit/second in the CAN FD. That's essentially the rate at which bits are travelling on the ...
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1answer
227 views

USB2244 enumeration failure

I have a PCB with a USB2244 USB to SDIO bridge IC connected to a Raspberry Pi Compute Module 3+. I (think I) designed based on the schematic circuit for the USB224x evaluation kit EVB-USB2240-IND. ...
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1answer
242 views

Does Linux regmap handle repeated start/stop i2c transaction?

I'm bringing up ADV7610 on Linux Kernel v4.14 on TI AM5728 platform. The Kernel module for this device is failing to successfully probe the device: ...
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1answer
50 views

Choosing controller/processor when real time feedback control system is required

Currently, I am planning to work on a system, in which we will be gathering the data from the multiple sensor for more than 15 parameters, based on the sensor value we will be controlling the ...
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2answers
298 views

i2cget works, but i2cdetect does not show the device

I'm working to bring up ADV7610 (similar to ADV7611) on a Linux based embedded system (TI AM5728 platform). By all account, I think the Chip-Select, Reset and I2C bus are all configured correctly. ...
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123 views

CAN bus traffic is destroyed for unknown reason

I am a bit stuck with connecting several STM32F405 with BeagleBone black via CAN bus. Strange things happen when I connect 3 stm32 and 1 BB. I have checked that BB works perfectly with any ...
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1answer
68 views

USB Hub on Embedded Target disconnects and reinitializes causing a crash on Linux Host

I have an imx6 embedded board which is connected through FTDI/USB to a linux host. The embedded board runs a Yocto linux. I send commands to the embedded board through a serial interface (ie. write to ...
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3answers
107 views

Low-power Linux-based ARM system on module for data logger? [closed]

I want to develop a data logger with several hardware characteristics (low-power consumption, SDI-12, I2C, SPI, UART, USB, Ethernet, touchscreen display, SD card, RTC, internal memory at least 128MB......
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1answer
153 views

Slow FIFO read from LSM6DS3

I have been trying to read FIFO buffer from LSM6DS3 inertial sensor via i2c. The processor will read LSM6DS3 buffer every 20s so the FIFO will contain approximately 3120 bytes of accelerometer data. ...
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1answer
141 views

Avrdude Does not Read What it Wrote Correctly

Question I am getting back into Atmel AVR programming after nearly a decade off. To this end, I am trying to get the usual blinken lights demo working. Unfortunately this does not function, though ...
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1answer
88 views

Embedded Development Support plugin does not generate CMake files in CLion on Ubuntu 19.10

I can build, run and debug my old projects. But when I try to import new STM32CubeMX project, nothing happens. No CMakeLists.txt file created. Pressing '...
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3answers
119 views

Emulation in advance CPU Vs Native CPU

My question is very specific but I might face difficulty framing it well so hope I dont get penalized. Background: Playstation 1, houses 32-bit RISC MIPS R3051 processor, running at 33.8688 MHz with ...
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0answers
161 views

FT230xs USB basic UART converter dropping frames

I'm working with a custom STM32F429 board, I am using serial-USB port (USART1-PA9,PA10) for debug output and diagnostics. When I connect the board the FTDI chip is recognized and proper kernel modules ...
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1answer
92 views

How to enter bootloader on a Embedded Linux System with no keyboard? [closed]

I am trying to reflash a microcontroller. An instruction in the manual states that: Power up the owa4x and press the space bar to enter the bootloader prompt Insert the uSD card with the ...
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3answers
173 views

From microcontrollers to microprocessors [Embedded Devices] [closed]

I was told by some developer that embedded controllers are task specific devices that requires low latency which processor based devices can't offer due to OS overhead. So I would like to first of ...
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1answer
72 views

Interconnect between different blocks of SoC from different vendors

So I am planning to do a learning project of installing embedded linux into to SoC. One from smartphone vendor Spreadtrum SC7731 and the other from generic smart devices vendor Ingenic JZ4725B. Since ...
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1answer
570 views

Connect I2C Oled via USB to Linux Box [duplicate]

I connected a 1.3" SH1106 Oled via the I2C pins to a i2c-to-usb adapter (UMFT201XB from FTDI) and on my Linux Box (Z83 mini pc with Ubuntu 18.04) I can see the device under /dev/ttyUSB0. This is the ...
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2answers
506 views

Errors were encountered loading footprints: kicad_plugin.cpp : FootprintEnumerate() : line 1786

I am newbie in working with KiCad So for first time i tried to generate footprint of one negetive voltage source from here and here: And the Sketch is like this : button and i get this error in my ...
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1answer
411 views

Safe shutdown Embedded Linux on Power-Down

I am not very experienced with Embedded Linux, just some projects with the Raspberry Pi. I would like to know if there are any recommended ways to shutdown the Embedded Linux if the device's power ...
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2answers
2k views

What is the role of the ROOT COMPLEX in a microprocessor system (PCI Express)

I have been learning about the Linux kernel and the most common bus type i always encounter is the PCI bus. As an electronics Engineer, i decided to look at how this bus works as it seems to be the ...
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2answers
958 views

USB 3.0 VS MIPI CSI-2 camera interface on Embedded Linux system. Which one is better from both hardware and software perspective?

I have a Sony FCB series camera (1920x1080) and looking for a better interface protocol to connect it with processors like NXP, TI or any similar embedded processor. The camera has a LVDS out port ...
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1answer
179 views

How do I connect a bno055 chip to a Linux pc via an FTDI UART breakout sensor?

I want to create a C++ (or C) program that reads in a stream of Quaternion data from the bno055 Adafruit chip. My set-up at the moment has an Ubuntu PC as the controller. Plugged into the PC is a ...
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3answers
299 views

how to determine architecture core detail of ARM11 processor

I'm cross-compiling for an embedded Linux board, based in BCM5892 ARM11 processor. I need to know about architecture detail of this processor(‘armv6’, ‘armv6j’, ‘armv6k’, ‘armv6kz’, ‘armv6t2’, ‘...
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1answer
92 views

Why can't the bootloader save and log messages for us to view later [closed]

I have a problem whereby a remote BeagleBone device is taking hours to boot up. When it does, I don't see any problems in the kernel boot logs such as journalctl -b or journalctl -b -1 Without having ...
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0answers
323 views

How are MBIM transaction ID's supposed to be used?

Situation I am developing a product that will use this Sierra Wireless HL7618RD Cat 1 LTE modem. I am interfacing to the modem over USB using a small SoM running a Debian flavor of Linux. The modem is ...

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