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Recent questions tagged embedded

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embedded - How does an assembly instruction turn into voltage changes on the CPU?

I've been working in C and CPython for the past 3 - 5 years. Consider that my base of knowledge here. If I were ... faster than MOV EAX, 0h. :) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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996 views

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embedded - Looking for an efficient integer square root algorithm for ARM Thumb2

I am looking for a fast, integer only algorithm to find the square root (integer part thereof) of an ... assembly language or C code. Any hints welcome. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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embedded - Simple serial point-to-point communication protocol

I need a simple communication protocol between two devices (a PC and a microcontroller). The PC must send some ... and Modbus protocols. I will research on it. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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embedded linux - How to read a binary data over serial terminal in C program?

I read followed links and other sources, but didn't find answer for my question. Binary data over serial ... console.", logname); return EXIT_SUCCESS; } Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.5k views

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embedded - Understanding Linux /proc/pid/maps or /proc/self/maps

I am trying to understand my embedded Linux application's memory use. The /proc/pid/maps utility/file seems to be ... to be some of the larger memory segments. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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embedded - HID report Request

I'm stumped on communicating with a USB card reader using an embedded controller as the host. With great ... from:https://stackoverflow.com/questions/65833788/hid-report-request...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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embedded linux - TFTP configuration (TFTP + NFS + u-boot) - problem with parallel boot up of two or more devices

Environment: Router (DHCP source) Raspberry Pi (as server) three custom devices with u-boot on board Desired system ... tftp-nfs-u-boot-problem-with-parallel-boot-up-of-two...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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embedded - Segger Jlink flash download mechanism

I'm using Rohitab's excellent API monitor tool to monitor the DLL calls that Keil uVision is making ... //stackoverflow.com/questions/65875772/segger-jlink-flash-download-mechanism...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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embedded - Debugging traces in Atmel Studio

Some of our clients have recently reported disconnections from our device with our software in Mac computers ... .com/questions/65921513/debugging-traces-in-atmel-studio...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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embedded linux - Yocto install package at rellocated place on image

I have a weird requirement of installing a package into a rellocated place in my Yocto image without changing ... /65922214/yocto-install-package-at-rellocated-place-on-image...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

embedded - How to get a process variable value from a map file address in Linux

For example, if I have a map file like this, 0x00001000 _hoge how do I get the value of the variable "hoge" ... to-get-a-process-variable-value-from-a-map-file-address-in-linux...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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998 views

1 answer

embedded osgi - WebSphere Liberty 20.0.0.12 , defaultHttpEndpoint doesn't bind to dns alias name

I've got some trouble connecting to the http://(url):(port)/osgi/http website with the dns alias name (c- ... -liberty-20-0-0-12-defaulthttpendpoint-doesnt-bind-to-dns-alias-name...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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embedded linux - postinstall intercept hook 'update_gio_module_cache' failed

I am faiely new to yocto. and I'm trying to do a fresh build for qemuarm. Steps i've taken: ... .com/questions/65938527/postinstall-intercept-hook-update-gio-module-cache-failed...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

1 answer

embedded - Contiki-NG CC2538 rom_util_program_flash problem

I am writing a service of Contiki os, that is supposed to run on a CC2538. However, I encounter a ... .com/questions/65944129/contiki-ng-cc2538-rom-util-program-flash-problem...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.5k views

1 answer

embedded linux - How could I get USB serial number using libusb in C code?

I'm trying to get the usb device serial number from a C code application in a embedded Linux platform (petalinux) using ... how-could-i-get-usb-serial-number-using-libusb-in-c-code...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

embedded - Polling or Interrupt based method

When should one use polling method and when should one use interrupt based method ? Are there scenarios ... /stackoverflow.com/questions/3072815/polling-or-interrupt-based-method...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

995 views

1 answer

embedded - Power Efficient Software Coding

In a typical handheld/portable embedded system device Battery life is a major concern in design of H/W ... https://stackoverflow.com/questions/61882/power-efficient-software-coding...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

embedded - Power Efficient Software Coding

In a typical handheld/portable embedded system device Battery life is a major concern in design of H/W ... https://stackoverflow.com/questions/61882/power-efficient-software-coding...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.2k views

1 answer

embedded resource - how to get list of files stored in a .qrc Qt Resorce file?

I'm very new to Qt..and in my program i have added some icon files in .qrc resource file. How can we list in ... 13509799/how-to-get-list-of-files-stored-in-a-qrc-qt-resorce-file...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.1k views

1 answer

embedded - AVR or PIC to start programming Microcontroller?

question from:https://stackoverflow.com/questions/140049/avr-or-pic-to-start-programming-microcontroller...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.3k views

1 answer

embedded linux - No RTAI patch for your kernel version in buildroot?

I was trying to use the default config provided by Buildroot olimex_a64_olinuxino_defconfig and got the error: No RTAI ... /no-rtai-patch-for-your-kernel-version-in-buildroot...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

embedded - How to organize freeRTOS project

I am new in the world of freertos, I have to do a project that consists of an automatic alcohol ... https://stackoverflow.com/questions/66059073/how-to-organize-freertos-project...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

1 answer

embedded linux - No RTAI patch for your kernel version in buildroot?

I was trying to use the default config provided by Buildroot olimex_a64_olinuxino_defconfig and got the error: No RTAI ... /no-rtai-patch-for-your-kernel-version-in-buildroot...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.2k views

1 answer

embedded - How to organize freeRTOS project

I am new in the world of freertos, I have to do a project that consists of an automatic alcohol ... https://stackoverflow.com/questions/66059073/how-to-organize-freertos-project...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.3k views

1 answer

embedded linux - ROS-Yocto catkin_make toplevel.cmake

I am trying to install ROS into an embedded device (imx8m-mini variscite dart) using Yocto. I have ... /stackoverflow.com/questions/66061842/ros-yocto-catkin-make-toplevel-cmake...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.2k views

1 answer

embedded - STM32F769NI USB CDC主机发送简单数据到设备的问题(STM32F769NI USB CDC host problem sending simple data to the device)

I am making HID for some data acquisition system. (我正在为某些数据采集系统制作HID )There are a lot of sensors who store test data ... . (我对USB协议没有太多经验 ) ask by Random_Person translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.2k views

1 answer

embedded - STM32F769NI USB CDC主机发送简单数据到设备的问题(STM32F769NI USB CDC host problem sending simple data to the device)

I am making HID for some data acquisition system. (我正在为某些数据采集系统制作HID )There are a lot of sensors who store test data ... . (我对USB协议没有太多经验 ) ask by Random_Person translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.2k views

1 answer

embedded - unresolved symbol pthread_create, first referenced in ./armrtk/src/task.obj

I have been trying to figure this out for a few days now and cannot figure it out. I am using CCS as the IDE and I am ... { if(task != NULL){ free(task); pthread_exit(NULL); } }...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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