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OMXPLAYER - ELINUX.ORG Omxplayer is a video player specifically made for the Raspberry Pi's GPU made by Edgar (gimli) Hucek from the XBMC/Kodi project. It relies on the OpenMAX hardware acceleration API, which is the Broadcom's VideoCore officially supported API for GPU video/audio processing.. Raspberry Pi forum user spenning made precompiled binaries available on the forum. . See h JETSON ZOO - ELINUX.ORGSEE MORE ON ELINUX.ORG DEVICE TREE REFERENCE fdtdump is a tool to convert an FDT (flattened device tree, aka device tree blob) to source. The dtc compiler is an alternate tool that also has an option to convert an FDT to source (-O dts). fdtdump differs in some ways from "dtc -O dts": fdtdump prints the FDT header as a sourcecomment.
BRINGING CAN INTERFACE UP HOW TO USE AN ANDROID TABLET AS A RASPBERRY PI CONSOLE Enable USB tethering on your Android tablet. Settings → Connections → Tethering and Wi-Fi hotspot → USB tethering. Now the Raspberry automatically gets an IP address via its USB0 port. The Android tablet behaves like a NAT router. This should work both when your tablet is connected to Wi-Fi or to a mobile 3G/4G network.Z-TURN BOARD
YOCTO PROJECT INTRODUCTION DEBUGGING BY PRINTING From eLinux.org. Jump to: navigation. , search. Probably the simplest way to get some debug information from your kernel code is by printing out various information with the kernel's equivalent of printf - the printk function and its derivatives. The k in printk is used to specifically remind kernel developers that the environment isdifferent.
LINK TIME DEAD CODE AND DATA ELIMINATION USING GNU TOOLCHAIN CELF Embedded Linux Conference 2010 Welcome to the 1970s How exactly executable is created? Linker sees that main.o has an undefined reference to label f. Linker scans lib.a and finds that module1.o has this label defined. Linker adds all sections from it, including entire .text section from module1.o, to the executable. Therefore unused_func() body is included too. BOOTCHART - ELINUX.ORG Bootchart is a tool for performance analysis and visualization of the Linux boot process. Resource utilization and process information are collected during the user-space portion of the boot process and are later rendered in a PNG, SVG or EPS encoded chart. For embedded systems several developers have tried to use bootchart to analyze boottime
OMXPLAYER - ELINUX.ORG Omxplayer is a video player specifically made for the Raspberry Pi's GPU made by Edgar (gimli) Hucek from the XBMC/Kodi project. It relies on the OpenMAX hardware acceleration API, which is the Broadcom's VideoCore officially supported API for GPU video/audio processing.. Raspberry Pi forum user spenning made precompiled binaries available on the forum. . See h JETSON ZOO - ELINUX.ORGSEE MORE ON ELINUX.ORG DEVICE TREE REFERENCE fdtdump is a tool to convert an FDT (flattened device tree, aka device tree blob) to source. The dtc compiler is an alternate tool that also has an option to convert an FDT to source (-O dts). fdtdump differs in some ways from "dtc -O dts": fdtdump prints the FDT header as a sourcecomment.
BRINGING CAN INTERFACE UP HOW TO USE AN ANDROID TABLET AS A RASPBERRY PI CONSOLE Enable USB tethering on your Android tablet. Settings → Connections → Tethering and Wi-Fi hotspot → USB tethering. Now the Raspberry automatically gets an IP address via its USB0 port. The Android tablet behaves like a NAT router. This should work both when your tablet is connected to Wi-Fi or to a mobile 3G/4G network.Z-TURN BOARD
YOCTO PROJECT INTRODUCTION DEBUGGING BY PRINTING From eLinux.org. Jump to: navigation. , search. Probably the simplest way to get some debug information from your kernel code is by printing out various information with the kernel's equivalent of printf - the printk function and its derivatives. The k in printk is used to specifically remind kernel developers that the environment isdifferent.
LINK TIME DEAD CODE AND DATA ELIMINATION USING GNU TOOLCHAIN CELF Embedded Linux Conference 2010 Welcome to the 1970s How exactly executable is created? Linker sees that main.o has an undefined reference to label f. Linker scans lib.a and finds that module1.o has this label defined. Linker adds all sections from it, including entire .text section from module1.o, to the executable. Therefore unused_func() body is included too.RPI DISTRIBUTIONS
Available ARMv6 Distributions Fedora Remix. The Raspberry Pi Fedora Remix is a Linux software distribution for the Raspberry Pi computer. It contains software packages from the Fedora Project (specifically, the Fedora ARM secondary architecture project), packages which have been specifically written for or modified for the Raspberry Pi, and proprietary software provided by the Raspberry Pi DEVICE TREE REFERENCE fdtdump is a tool to convert an FDT (flattened device tree, aka device tree blob) to source. The dtc compiler is an alternate tool that also has an option to convert an FDT to source (-O dts). fdtdump differs in some ways from "dtc -O dts": fdtdump prints the FDT header as a sourcecomment.
Z-TURN BOARD
Function Block Diagram. Dimension Chart. Z-turn IO Cape. Overview. The Z-turn IO Cape is an IO extension board designed specially for the Z-turn Board. User can bring out many peripherals and signals like ADC, GPIO, LCD and camera interfaces to explore more functions fromthe Z-turn Board.
CAPEMGR - ELINUX.ORG About. Capemgr was created out of a need for boards like the BeagleBone to be able to detect installed expansion boards at boot time and allocate appropriate resources (load drivers, allocate GPIO, reserve bus addresses, etc) on kernels which use Device Tree. Traditionally, a Device Tree was a static file (or set of files) which described a machine (often an Embedded SoC and the board it's BRINGING CAN INTERFACE UP At first you'll need a special daemon (slcand from can-utils), that will link this serial interface with a virtual CAN device. By default these devices get slcan name base. This is an example for a USB-to-CAN adapter working at 3Mbit/s: $ sudo slcand -o -s8 -t hwBITBAKE CHEAT SHEET
Command Line options. Here are a few commonly-used command line options. Option. Meaning. -c . execute for the image or recipe being built. ex: bitbake -c fetch busybox. Some of the possible tasks are: fetch, configure, compile, package, clean. -f. force execution of the operation, even if not required. RPI-CAM-WEB-INTERFACE RPi Cam Web Interface is a web interface for the Raspberry Pi Camera module. It can be used for a wide variety of applications including surveillance, dvr recording and time lapse photography. It is highly configurable and can be extended with the use of macro scripts. BEAGLEBONE BLACK ENABLE SPIDEV Make sure to save your changes. (Ctrl+s) optargs=quiet drm.debug=7 capemgr.enable_partno=BB-SPI0-01. after you save the changes, reboot your beaglebone black. Make sure it is enabled You should now have two spidev-files in the folder /dev/. ls -al /dev/spidev0.*. You should also be able to see the pingroups: BEAGLEBOARD:TERMINAL SHELLS Terminal Shells. When the BeagleBone Black is shipped, it has built-in networking that allows remote access. Since it has built-in network services, it can be accessed remotely over the internet and can be used to access electronic projects. R-CAR/DEFAULT-CPUFREQ-GOVERNOR-FROM-V5-9 Overview. From Linux kernel v5.9, since the following commit has been applied, the default CPUFreq governor has been changed from performance to schedutil. BOOTCHART - ELINUX.ORG Bootchart is a tool for performance analysis and visualization of the Linux boot process. Resource utilization and process information are collected during the user-space portion of the boot process and are later rendered in a PNG, SVG or EPS encoded chart. For embedded systems several developers have tried to use bootchart to analyze boottime
RASPCONTROL
Navigate to the location you downloaded Raspcontrol to, from that location we need to give ./start.sh Read/Write/Execute Permissions. sudo chmod 0777 ./start.sh. Now we can deploy the server by running the command from the same location. sudo ./start.sh. You can now access Raspcontrol from localhost directly on your Raspberry Pi, orthe
ARM PROCESSOR
ARM Processor. The ARM architecture (previously, the Advanced RISC Machine, and prior to that Acorn RISC Machine) is a 32-bit RISC processor architecture developed by ARM Limited that is widely used in a number of embedded designs. Because of their power saving features, ARM CPUs are dominant in the mobile electronics market, where lowpower
OMXPLAYER - ELINUX.ORG Omxplayer is a video player specifically made for the Raspberry Pi's GPU made by Edgar (gimli) Hucek from the XBMC/Kodi project. It relies on the OpenMAX hardware acceleration API, which is the Broadcom's VideoCore officially supported API for GPU video/audio processing.. Raspberry Pi forum user spenning made precompiled binaries available on the forum. . See h R-PI NAS - ELINUX.ORG The simplest, user-level way of doing this is to open a file manager (e.g. nautilus, thunar), use shortcut Control+l, and enter. smb:///. (Note: the 'Domain' field is not usually required) where server is of course the IP address or hostname of the R DIRECTFB - ELINUX.ORG DirectFB (Direct Frame Buffer) is a set of graphics APIs implemented on top of the Linux Frame Buffer (fbdev) abstraction layer. Input Device and Window System are also available. Linux version of `DirectDraw`, in a manner of speaking. www.directfb.org. This site must be cracked and became wired. www.directfb.net alsoseems so strange.
Z-TURN BOARD
AUDIO CAPE REVB
YOCTO PROJECT INTRODUCTIONR-CAR/BOARDS/CONDOR
Flash u-boot-elf-condor.srec. In console execute xls2 command (load program to qspi flash) and provide the following inputs: 3 y 50000000 640000 type "ctrl+A S" and select upload method "ascii", then choose file for uploading "u-boot-elf-condor.srec", after upload finished press any key y. Reset the board. Press SW36. BOOTCHART - ELINUX.ORG Bootchart is a tool for performance analysis and visualization of the Linux boot process. Resource utilization and process information are collected during the user-space portion of the boot process and are later rendered in a PNG, SVG or EPS encoded chart. For embedded systems several developers have tried to use bootchart to analyze boottime
RASPCONTROL
Navigate to the location you downloaded Raspcontrol to, from that location we need to give ./start.sh Read/Write/Execute Permissions. sudo chmod 0777 ./start.sh. Now we can deploy the server by running the command from the same location. sudo ./start.sh. You can now access Raspcontrol from localhost directly on your Raspberry Pi, orthe
ARM PROCESSOR
ARM Processor. The ARM architecture (previously, the Advanced RISC Machine, and prior to that Acorn RISC Machine) is a 32-bit RISC processor architecture developed by ARM Limited that is widely used in a number of embedded designs. Because of their power saving features, ARM CPUs are dominant in the mobile electronics market, where lowpower
OMXPLAYER - ELINUX.ORG Omxplayer is a video player specifically made for the Raspberry Pi's GPU made by Edgar (gimli) Hucek from the XBMC/Kodi project. It relies on the OpenMAX hardware acceleration API, which is the Broadcom's VideoCore officially supported API for GPU video/audio processing.. Raspberry Pi forum user spenning made precompiled binaries available on the forum. . See h R-PI NAS - ELINUX.ORG The simplest, user-level way of doing this is to open a file manager (e.g. nautilus, thunar), use shortcut Control+l, and enter. smb:///. (Note: the 'Domain' field is not usually required) where server is of course the IP address or hostname of the R DIRECTFB - ELINUX.ORG DirectFB (Direct Frame Buffer) is a set of graphics APIs implemented on top of the Linux Frame Buffer (fbdev) abstraction layer. Input Device and Window System are also available. Linux version of `DirectDraw`, in a manner of speaking. www.directfb.org. This site must be cracked and became wired. www.directfb.net alsoseems so strange.
Z-TURN BOARD
AUDIO CAPE REVB
YOCTO PROJECT INTRODUCTIONR-CAR/BOARDS/CONDOR
Flash u-boot-elf-condor.srec. In console execute xls2 command (load program to qspi flash) and provide the following inputs: 3 y 50000000 640000 type "ctrl+A S" and select upload method "ascii", then choose file for uploading "u-boot-elf-condor.srec", after upload finished press any key y. Reset the board. Press SW36. DIRECTFB - ELINUX.ORG DirectFB (Direct Frame Buffer) is a set of graphics APIs implemented on top of the Linux Frame Buffer (fbdev) abstraction layer. Input Device and Window System are also available. Linux version of `DirectDraw`, in a manner of speaking. www.directfb.org. This site must be cracked and became wired. www.directfb.net alsoseems so strange.
AUTOMATED TESTING
Automated Testing Summit 2018 (ELCE 2018/OSSE 2018) The first event specifically dedicated to automated testing of Linux was the Automated Testing Summit 2018 (ATS), held for the first time in October of 2018. This was co-located with Embedded Linux Conference Europe and Open Source Summit Europe, held in Edinburgh Scotland.Z-TURN BOARD
Function Block Diagram. Dimension Chart. Z-turn IO Cape. Overview. The Z-turn IO Cape is an IO extension board designed specially for the Z-turn Board. User can bring out many peripherals and signals like ADC, GPIO, LCD and camera interfaces to explore more functions fromthe Z-turn Board.
INTERFACING WITH I2C DEVICES This page is meant to provide some basic information about how to interface with I²C devices through the /dev/i2c interface. The I²C bus is commonly used to connect relatively low-speed sensors and other peripherals to equipment varying in complexity from a BRINGING CAN INTERFACE UP At first you'll need a special daemon (slcand from can-utils), that will link this serial interface with a virtual CAN device. By default these devices get slcan name base. This is an example for a USB-to-CAN adapter working at 3Mbit/s: $ sudo slcand -o -s8 -t hwJETSON XAVIER NX
Jetson Xavier NX Module. The Jetson Xavier NX compute module contains the Xavier SoC, memory, eMMC storage, and power circuitry. The I/O ports are broken out through a carrier board via a 260-pin SO-DIMM edge connector, which is backwards-compatible with the Jetson Nano module pin-out. Below is a partial list of the module's features. R-CAR/DEFAULT-CPUFREQ-GOVERNOR-FROM-V5-9 Overview. From Linux kernel v5.9, since the following commit has been applied, the default CPUFreq governor has been changed from performance to schedutil. OPENOCD TROUBLESHOOTING: CAN'T FIND FILE.CFG Find the config files with your hardware. If you have compiled OpenOCD from source, they are most likely located in your OpenOCD directory, at tcl/interface, tcl/board, or tcl/target. Run OpenOCD again, using the -f switch to specify the path to each config file. For example: openocd -f interface/flyswatter2.cfg -f board/hammer.cfg. AN INTRODUCTION TO THE VIDEO4LINUX FRAMEWORK 2014 Cisco and/or its affiliates. All rights reserved. 1 An Introduction to the Video4Linux Framework Hans Verkuil Cisco SystemsNorway
LINUX SOFTWARE UPDATE TECHNOLOGIES A COMPARISON OF Linux software update history H.J. Lu’s Boot-root distributions Boot and build the rest, no update mechanism MCC, TAMU, and SLS Packages in tarballs, no dependencies BOOTCHART - ELINUX.ORG Bootchart is a tool for performance analysis and visualization of the Linux boot process. Resource utilization and process information are collected during the user-space portion of the boot process and are later rendered in a PNG, SVG or EPS encoded chart. For embedded systems several developers have tried to use bootchart to analyze boottime
AUTOMATED TESTING
ARM PROCESSOR
ARM Processor. The ARM architecture (previously, the Advanced RISC Machine, and prior to that Acorn RISC Machine) is a 32-bit RISC processor architecture developed by ARM Limited that is widely used in a number of embedded designs. Because of their power saving features, ARM CPUs are dominant in the mobile electronics market, where lowpower
JETSON ZOO - ELINUX.ORGSEE MORE ON ELINUX.ORGRASPCONTROL
Navigate to the location you downloaded Raspcontrol to, from that location we need to give ./start.sh Read/Write/Execute Permissions. sudo chmod 0777 ./start.sh. Now we can deploy the server by running the command from the same location. sudo ./start.sh. You can now access Raspcontrol from localhost directly on your Raspberry Pi, orthe
OMXPLAYER - ELINUX.ORG Omxplayer is a video player specifically made for the Raspberry Pi's GPU made by Edgar (gimli) Hucek from the XBMC/Kodi project. It relies on the OpenMAX hardware acceleration API, which is the Broadcom's VideoCore officially supported API for GPU video/audio processing.. Raspberry Pi forum user spenning made precompiled binaries available on the forum. . See hZ-TURN BOARD
BEAGLEBOARD/GSOC 2021/MICROPYTHON FOR BEAGLECONNECTSEE MORE ONELINUX.ORG
AUDIO CAPE REVB
W25Q80, W25Q16, W25Q32 8M-BIT, 16M-BIT AND 32M-BIT … W25Q80, W25Q16, W25Q32 - 8 - 7.1 Package Types W25Q80 is offered in an 8-pin plastic 208-mil width SOIC (package code SS) and 6x5-mm WSON(package code ZP).
BOOTCHART - ELINUX.ORG Bootchart is a tool for performance analysis and visualization of the Linux boot process. Resource utilization and process information are collected during the user-space portion of the boot process and are later rendered in a PNG, SVG or EPS encoded chart. For embedded systems several developers have tried to use bootchart to analyze boottime
AUTOMATED TESTING
ARM PROCESSOR
ARM Processor. The ARM architecture (previously, the Advanced RISC Machine, and prior to that Acorn RISC Machine) is a 32-bit RISC processor architecture developed by ARM Limited that is widely used in a number of embedded designs. Because of their power saving features, ARM CPUs are dominant in the mobile electronics market, where lowpower
JETSON ZOO - ELINUX.ORGSEE MORE ON ELINUX.ORGRASPCONTROL
Navigate to the location you downloaded Raspcontrol to, from that location we need to give ./start.sh Read/Write/Execute Permissions. sudo chmod 0777 ./start.sh. Now we can deploy the server by running the command from the same location. sudo ./start.sh. You can now access Raspcontrol from localhost directly on your Raspberry Pi, orthe
OMXPLAYER - ELINUX.ORG Omxplayer is a video player specifically made for the Raspberry Pi's GPU made by Edgar (gimli) Hucek from the XBMC/Kodi project. It relies on the OpenMAX hardware acceleration API, which is the Broadcom's VideoCore officially supported API for GPU video/audio processing.. Raspberry Pi forum user spenning made precompiled binaries available on the forum. . See hZ-TURN BOARD
BEAGLEBOARD/GSOC 2021/MICROPYTHON FOR BEAGLECONNECTSEE MORE ONELINUX.ORG
AUDIO CAPE REVB
W25Q80, W25Q16, W25Q32 8M-BIT, 16M-BIT AND 32M-BIT … W25Q80, W25Q16, W25Q32 - 8 - 7.1 Package Types W25Q80 is offered in an 8-pin plastic 208-mil width SOIC (package code SS) and 6x5-mm WSON(package code ZP).
OMXPLAYER - ELINUX.ORG Omxplayer is a video player specifically made for the Raspberry Pi's GPU made by Edgar (gimli) Hucek from the XBMC/Kodi project. It relies on the OpenMAX hardware acceleration API, which is the Broadcom's VideoCore officially supported API for GPU video/audio processing.. Raspberry Pi forum user spenning made precompiled binaries available on the forum. . See h INTERFACING WITH I2C DEVICES This page is meant to provide some basic information about how to interface with I²C devices through the /dev/i2c interface. The I²C bus is commonly used to connect relatively low-speed sensors and other peripherals to equipment varying in complexity from a YOCTO PROJECT INTRODUCTION The main parts of the Yocto Project are the build system, the package meta-data, and the developer tools. The build system uses a tool called "bitbake" to process the meta-data and produce a complete Linux distribution. By design, the build system produces not just the software that will run on the target, but also the development toolsused to
R-PI NAS - ELINUX.ORG The simplest, user-level way of doing this is to open a file manager (e.g. nautilus, thunar), use shortcut Control+l, and enter. smb:///. (Note: the 'Domain' field is not usually required) where server is of course the IP address or hostname of the R R-CAR/DEFAULT-CPUFREQ-GOVERNOR-FROM-V5-9 Overview. From Linux kernel v5.9, since the following commit has been applied, the default CPUFreq governor has been changed from performance to schedutil.USER TALK:AAILLET
Welcome to eLinux.org! We hope you will contribute much and well. You will probably want to read the help pages.Again, welcome and have fun! Wmat 06:44, 7 June 2021 (PDT) EMBEDDED LINUX COMMUNITY UPDATE 1010/23/2014 PA1 Confidential Linux v5.12 (Apr 2021) • Support for oprofile removed • superceded by perf events • “PREEMPT_DYNAMIC” allows selecting preemption mode at boot or run time • Dynamic thermal power management • Allow power usage of groups of devices to be capped to meet thermal constraints • Nintendo 64 support (finally!) • Not sure how useful this is whenthe
R-CAR/BOARDS/KINGFISHER/YOCTO-GEN3/V5.1.0 Board name SW name Release date Note R-Car Starter Kit ( Premier / Pro) Yocto v5.1.0 : 2021/06/03 Yocto v3.21.0: 2019/07/09 New R-Car Starter Kit Pro(RTP8J77961ASKB0SK0SA05A) is supported from2020/07/10.
USER:AAILLET
This page was last edited on 7 June 2021, at 06:44. Content is available under a Creative Commons Attribution-ShareAlike 3.0 Unported License unless otherwise noted HOW NOT TO DO RESEARCH ON AN OPEN SOURCE COMMUNITY Timeline (2 of 4) 2021 Apr 21: Greg K-H requests review @umn.edu reverts, TAB begins review 2021 Apr 23: Linux Foundation sends letterto UMN requesting:
BOOTCHART - ELINUX.ORG Bootchart is a tool for performance analysis and visualization of the Linux boot process. Resource utilization and process information are collected during the user-space portion of the boot process and are later rendered in a PNG, SVG or EPS encoded chart. For embedded systems several developers have tried to use bootchart to analyze boottime
RASPCONTROL
Navigate to the location you downloaded Raspcontrol to, from that location we need to give ./start.sh Read/Write/Execute Permissions. sudo chmod 0777 ./start.sh. Now we can deploy the server by running the command from the same location. sudo ./start.sh. You can now access Raspcontrol from localhost directly on your Raspberry Pi, orthe
AUTOMATED TESTING
OMXPLAYER - ELINUX.ORG Omxplayer is a video player specifically made for the Raspberry Pi's GPU made by Edgar (gimli) Hucek from the XBMC/Kodi project. It relies on the OpenMAX hardware acceleration API, which is the Broadcom's VideoCore officially supported API for GPU video/audio processing.. Raspberry Pi forum user spenning made precompiled binaries available on the forum. . See h BEAGLEBONE BLACK ENABLE SPIDEV Make sure to save your changes. (Ctrl+s) optargs=quiet drm.debug=7 capemgr.enable_partno=BB-SPI0-01. after you save the changes, reboot your beaglebone black. Make sure it is enabled You should now have two spidev-files in the folder /dev/. ls -al /dev/spidev0.*. You should also be able to see the pingroups:AUDIO CAPE REVB
ANDROID BOOTING
Key bootup components Bootloader. The first program which runs on any Android system is the bootloader. Technically, the bootloader is outside the realm of Android itself, and is used to do very low-level system initialization, before loading the Linux kernel. DEBUGGING BY PRINTING From eLinux.org. Jump to: navigation. , search. Probably the simplest way to get some debug information from your kernel code is by printing out various information with the kernel's equivalent of printf - the printk function and its derivatives. The k in printk is used to specifically remind kernel developers that the environment isdifferent.
BEAGLEBOARD:TERMINAL SHELLS Terminal Shells. When the BeagleBone Black is shipped, it has built-in networking that allows remote access. Since it has built-in network services, it can be accessed remotely over the internet and can be used to access electronic projects. HOW TO USE AN ANDROID TABLET AS A RASPBERRY PI CONSOLE Enable USB tethering on your Android tablet. Settings → Connections → Tethering and Wi-Fi hotspot → USB tethering. Now the Raspberry automatically gets an IP address via its USB0 port. The Android tablet behaves like a NAT router. This should work both when your tablet is connected to Wi-Fi or to a mobile 3G/4G network. BOOTCHART - ELINUX.ORG Bootchart is a tool for performance analysis and visualization of the Linux boot process. Resource utilization and process information are collected during the user-space portion of the boot process and are later rendered in a PNG, SVG or EPS encoded chart. For embedded systems several developers have tried to use bootchart to analyze boottime
RASPCONTROL
Navigate to the location you downloaded Raspcontrol to, from that location we need to give ./start.sh Read/Write/Execute Permissions. sudo chmod 0777 ./start.sh. Now we can deploy the server by running the command from the same location. sudo ./start.sh. You can now access Raspcontrol from localhost directly on your Raspberry Pi, orthe
AUTOMATED TESTING
OMXPLAYER - ELINUX.ORG Omxplayer is a video player specifically made for the Raspberry Pi's GPU made by Edgar (gimli) Hucek from the XBMC/Kodi project. It relies on the OpenMAX hardware acceleration API, which is the Broadcom's VideoCore officially supported API for GPU video/audio processing.. Raspberry Pi forum user spenning made precompiled binaries available on the forum. . See h BEAGLEBONE BLACK ENABLE SPIDEV Make sure to save your changes. (Ctrl+s) optargs=quiet drm.debug=7 capemgr.enable_partno=BB-SPI0-01. after you save the changes, reboot your beaglebone black. Make sure it is enabled You should now have two spidev-files in the folder /dev/. ls -al /dev/spidev0.*. You should also be able to see the pingroups:AUDIO CAPE REVB
ANDROID BOOTING
Key bootup components Bootloader. The first program which runs on any Android system is the bootloader. Technically, the bootloader is outside the realm of Android itself, and is used to do very low-level system initialization, before loading the Linux kernel. DEBUGGING BY PRINTING From eLinux.org. Jump to: navigation. , search. Probably the simplest way to get some debug information from your kernel code is by printing out various information with the kernel's equivalent of printf - the printk function and its derivatives. The k in printk is used to specifically remind kernel developers that the environment isdifferent.
BEAGLEBOARD:TERMINAL SHELLS Terminal Shells. When the BeagleBone Black is shipped, it has built-in networking that allows remote access. Since it has built-in network services, it can be accessed remotely over the internet and can be used to access electronic projects. HOW TO USE AN ANDROID TABLET AS A RASPBERRY PI CONSOLE Enable USB tethering on your Android tablet. Settings → Connections → Tethering and Wi-Fi hotspot → USB tethering. Now the Raspberry automatically gets an IP address via its USB0 port. The Android tablet behaves like a NAT router. This should work both when your tablet is connected to Wi-Fi or to a mobile 3G/4G network. BOOTCHART - ELINUX.ORG Bootchart is a tool for performance analysis and visualization of the Linux boot process. Resource utilization and process information are collected during the user-space portion of the boot process and are later rendered in a PNG, SVG or EPS encoded chart. For embedded systems several developers have tried to use bootchart to analyze boottime
YOCTO PROJECT INTRODUCTION The main parts of the Yocto Project are the build system, the package meta-data, and the developer tools. The build system uses a tool called "bitbake" to process the meta-data and produce a complete Linux distribution. By design, the build system produces not just the software that will run on the target, but also the development toolsused to
CAPEMGR - ELINUX.ORG About. Capemgr was created out of a need for boards like the BeagleBone to be able to detect installed expansion boards at boot time and allocate appropriate resources (load drivers, allocate GPIO, reserve bus addresses, etc) on kernels which use Device Tree. Traditionally, a Device Tree was a static file (or set of files) which described a machine (often an Embedded SoC and the board it's HOW TO USE AN ANDROID TABLET AS A RASPBERRY PI CONSOLE Enable USB tethering on your Android tablet. Settings → Connections → Tethering and Wi-Fi hotspot → USB tethering. Now the Raspberry automatically gets an IP address via its USB0 port. The Android tablet behaves like a NAT router. This should work both when your tablet is connected to Wi-Fi or to a mobile 3G/4G network. INTERFACING WITH I2C DEVICES This page is meant to provide some basic information about how to interface with I²C devices through the /dev/i2c interface. The I²C bus is commonly used to connect relatively low-speed sensors and other peripherals to equipment varying in complexity from a RPICONFIG - ELINUX.ORG RPiconfig. As the Raspberry Pi doesn't have a conventional BIOS, the various system configuration parameters that would normally be kept and set using the BIOS are now stored in a text file named "config.txt". The Raspberry Pi config.txt file is read by the GPU before the ARM core is initialized. This file is an optional file onthe boot partition.
USER:AAILLET
This page was last edited on 7 June 2021, at 06:44. Content is available under a Creative Commons Attribution-ShareAlike 3.0 Unported License unless otherwise notedUSER TALK:AAILLET
1 day ago · Welcome to eLinux.org! We hope you will contribute much and well. You will probably want to read the help pages.Again, welcome and have fun! Wmat 06:44, 7 June 2021 (PDT) R-CAR/BOARDS/KINGFISHER/YOCTO-GEN3/V5.1.0 Board name SW name Release date Note R-Car Starter Kit ( Premier / Pro) Yocto v5.1.0 : 2021/06/03 Yocto v3.21.0: 2019/07/09 New R-Car Starter Kit Pro(RTP8J77961ASKB0SK0SA05A) is supported from2020/07/10.
USER TALK:POUL
Welcome to eLinux.org! We hope you will contribute much and well. You will probably want to read the help pages.Again, welcome and have fun! Wmat 16:07, 3 June 2013 (UTC) TESTS:EMMC-8BIT-WIDTHFrom eLinux.org
Jump to: navigation, search This document describes how to test the on-board eMMC using 8 bit bus width on a R-Car H3 with a Salvator-X board.CONTENTS
* 1 Kernel branch
* 2 Preparations
* 3 Check eMMC is detected in the bootlog * 4 Check MMC settings * 5 Mount the partition and copy data onto it * 6 Remount the partition and verify the copied dataKERNEL BRANCH
The patches are included in renesas-drivers starting with renesas-drivers-2016-09-20-v4.8-rc7.
They landed upstream in v4.9-rc1. The topic branch is at.
PREPARATIONS
cat, mount, umount, cp, md5sum from busybox are needed for these tests. If the eMMC does not have a partition yet, also fdisk and mkfs.ext2 are needed. _debugfs_ and _ext2_ filesystems should be activated in the kernelconfig.
CHECK EMMC IS DETECTED IN THE BOOTLOG You should find messages like this in your bootlog: mmc0: new high speed MMC card at address 0001...
mmcblk0: p1
If the last line (with p1) is missing, you need to create the partition first using fdisk: # fdisk /dev/mmcblk0 then press "n", "p", "1", "enter", "enter", "w" to create a partition. Finally, to create the filesystem use: # mkfs.ext2 /dev/mmcblk0p1CHECK MMC SETTINGS
Read out the current setting for the eMMC: # cat /sys/kernel/debug/mmc0/ios clock: 52000000 Hz vdd: 21 (3.3 ~ 3.4 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 3 (8 bits) timing spec: 1 (mmc high-speed) signal voltage: 1 (1.80 V) driver type: 0 (driver type B) Check that bus width is 8 bits and signal voltage is 1.8V. MOUNT THE PARTITION AND COPY DATA ONTO IT # mount /dev/mmcblk0p1 /mnt # cp /bin/busybox /mnt/ # md5sum /mnt/busybox > /mnt/md5 We store the hashsum of the currently used busybox for laterverification.
REMOUNT THE PARTITION AND VERIFY THE COPIED DATA This ensures data was correctly written and can reliably be readagain:
# umount /mnt/
# mount /dev/mmcblk0p1 /mnt # md5sum -c /mnt/md5/mnt/busybox: OK
You can optionally reboot the machine after the _umount_ command.Retrieved from
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