I'm learning about the topic TPM chip, but I don't know how to use it T_T on Windows/Linux
Related
I've been working with a Micron BGA eMMC chip and prototyping a communication scheme with the eMMC chip inside an adapter board that connects to the GPIO pins of a TI microcontroller.
I've essentially created a communication scheme written in C code to walk through the initial handshake and initialization steps to get the eMMC to a Data Write/Read stage where I can write some small amounts of bytes to a part of the sector memory and read back the pattern I've written.
My next task is to format the eMMC into a partition format such as a FAT32 format, which is common among SD cards.
Does anyone know of any useful software or methods I could use to achieve this?
Or I've seen it's possible to format the eMMC using a Linux setup as well, but have little experience when it comes to Linux.
Any insight from anyone with past experience on the topic would be greatly appreciated!
If your system runs Linux that is the best option.
It is easy to format an eMMC using linux.
# mkfs -t fat32 /dev/mmcblk1
Is your TI microcontroller running Linux? If not, it might be diffiult connecting your BGA eMMC chip to a Linux system to format it.
Your second best option is to use a library that already supports it. Maybe something like (http://elm-chan.org/fsw/ff/00index_e.html) or (https://github.com/ryansturmer/thinfat32). There are several options I have not used any of them. To use these layers, you have to fulfill the lower level api.
As per topic. I have very old machine that i cannot replace (some old railway machine). That machine still uses 3.5zip drive. I need to fit the USB instead. Therefore, as i`m completely not familiar with this system, can someone direct me please on where to start to reconfigure this ( if manageable of course) for use with USB? I guess there would a need for drivers etc so the USB is discoverable.
Thanks a lot in advance.
You'll need to download io-usb (the USB server) and Fsys.usb (the USB bulk storage driver).
Start here:
http://foundry27.com/sf/wiki/do/viewPage/projects.qnx4/wiki/InstallationNotesForUSBStack?selectedTab=versions&version=4
Continue here:
https://openqnx.com/phpbbforum/viewtopic.php?t=11230
I dont know if someone can help me here. I also asked in the ros forum. So here is my problem:
Im working on a project and im a very beginner of ROS. I have a sensor which calculates the distance between two decanodes (range). The name of these two decanodes are AGV and SV. The AGV is the module which calculates the distance. Thats the key difference between AVG and SV. The AGV has to be connected to the PC via UART to USB, in my case its connected to the Jetson board. You have insight to the data of AGV with the docklight software. Its only for windows.
If everything is set up the sensor begins to collect the data (in meters).
My question is: How can I have access to these data. There is no information about that i should install a driver or something like that or a package. So if i connect it to the Jetson and if i look to the rosnode list i cant find anything which leads me to the data. I dont know what i have to do. I asked other people and they didnt know how to access the data if it is via UART to USB.
So it would be really nice if someone could write a helpful answer.
If I understand correctly, I think you will need to find documentation on the data format or protocol that your sensor is sending over its serial connection, or, if the manufacturer of the sensor provides a library or SDK with an API for receiving the data. Then write a new ROS node that receives the data and publishes it to the ROS system.
I was wondering if it would be possible to capture the live video from my integrated webcam using Labview 2011(National Instruments). All I need to do for now is put the camera in the front panel. This is not a USB Webcam. It is a chicony USB 2.0 Camera(does not show up as usb on my pc). Can anyone help me?
LV2012? Is this beta?
The best way to do this is using IMAQdx drivers+Vision Developement module. AFter installing IMAQdx, USB cams usually already show up in Measurement and Automation Explorer and you can try out Snap/Grab... (Tip: Do install whatever driver is included with the hardware/on a cd.)
Then, in LV, just drop the "IMAQ Acquisition Express" vi into your block diagram and you'll be guided through a very quick and easy setup.
I'm not much into Express vis, but that one is good.
If you don't have Vision Dev Module, look into ADVision (http://vi-lib.com/). It does the same thing, just with OpenCV, but I don't think that every driver is supported.
Also, remember only USB cameras that have DirectShow filter are supported by the Vision Acquisition Software, which has the IMAQdx that Birgit P. mentioned.
for usb2 you need imaqdx toolkit in vision acquisition part
also check NIMax after installation to see if labview could find your camera or not
labview could find and support all useb2 camera if you instal camera diver correctly
If I was told I needed to create a driver for some product (say, a game controller), how would I go about creating one? Is this something you could do normally in C/C++?
And what about firmware for external deviced connect to USB? How is this created usually? Is this also done in C/C++, or some lower level language?
Thanks!
Device drivers for desktop computer operating systems are generally written in either C or C++. The operating system you would target will have some form of framework or device driver development environment. Often these development kits can be obtained free of charge.
There are books available for Windows, Linux, and MacOS X (and others) that detail the process of creating a device driver.
If your driver is related to a device on a specific hardware bus (PCI, PCI-X, USB, SCSI, SATA, etc.) you can also get books on that specific technology. An understanding of that hardware system can greatly facilitate the design of your driver.
Another good resource is the open source code for similar devices to yours. You can obtain that from the Linux kernel source or FreeBSD source and study how certain aspects of your type of device are implemented.
EDIT: I nearly forgot to mention that you will also need data sheets, schematics, and/or theory of operation information about the device itself.
I'll add to Amardeep's good answer with the following books that will help you think about the context device drivers operate in, and how they're structured:
Linux:
http://www.amazon.com/Understanding-Linux-Kernel-Third-Daniel/dp/0596005652
Windows:
http://www.amazon.com/Programming-Microsoft-Windows-Driver-Model/dp/0735618038/ref=sr_1_1?ie=UTF8&s=books&qid=1277439434&sr=1-1
Mac OS:
http://www.amazon.com/Mac-OS-Internals-Systems-Approach/dp/0321278542/ref=sr_1_1?ie=UTF8&s=books&qid=1277439467&sr=1-1
You do it in any language that can talk to the interface. If it requires poking ports or addresses directly then you use assembly or C. If there's a higher-level interface such as libusb then you can use almost any language you like.