I'm trying to connect my board to pc with no success.
Here is what i tried;
I tried "STM32 FS Device Lib". It includes an example project named Custom HID. But it also uses some leds, some EXTIs and a pin named USB_DISCONNECT. I ported the code, removed the USB_DISCONNECT part and the leds. When i called USB_init(), nothing happens. No device found by the pc.
There is no need to configure custom endpoints, descriptor or anything else. Just communication for personal use. I want simply call functions i.e. USB_read() and USB_write().
Is there any simple library or example project that i can use?
Related
I have a Terasic DE1-SoC board and I want to run a simple led-blinking baremetal application with using HPS.
I've learned HPS tech ref, HPS Boot guide, SoC EDS guide and followed all instructions to run my app.
Here's a brief list of my steps.
Create a system in QSYS with HPS component and some PIOs (for on-board leds and buttons)
Run bsp-editor to create a preloader. I want to run from SD card so I check BOOT_FROM_SDMMC option. Also i want my app to be in FAT partition (check FAT_SUPPORT, FAT_BOOT PARTITION 1, FAT_LOAD_PAYLOAD_NAME test.img (or should it be test.bin?)) Uncheck WATCHDOG_ENABLE. I want to see booting of preloader process in serial connection, so I check SERIAL_SUPPORT. Other settings keep unchanged.
Type "make" in SOC EDS 15.0 command shell to obtain preloader-mkpimage.bin
Write preloader-mkpimage.bin by typing alt-boot-disk-util on sd card with FAT32 partition and custom partition A2.
Create simple app in DS-5, compile it and obtain test.axf then convert it to test.bin using fromelf command and then convert it in test.img with mkimage tool.
Drag-n-drop test.img on sd card FAT32 partition.
Insert it in board and power up
Load .sof on board (my system FPGA-HPS)
Reset HPS by pressing reset button
So the problem is that there is nothing going on in serial connection so i thing that preloader isn't working at all, HPS reset not helping.
I don't see even "<0>" in terminal, just blank page.
I've tried prebuilt images with linux provided by Terasic they are working on 100%.
I do everything according altera docs but nothing is working.
Even official example altera-socfpga-hardwarelib-unhosted isn't working. I've tried to use their preloader from example, but in terminal window I see only "<0>" symbol when I reset HPS.
By the way App is working only in debugger DS5 with inserted SD card and loaded .sof file on board. I don't clearly understand the meaning and the way of writing of .scat file. Don't understand what load address and entry point should I use when I use mkimage tool when converting test.bin->test.img (should i do this convertion or use in BSP settings test.bin???) In my opinion main problem is incorrect preloader. What is the problem with it?
Please help!
UPD: After editing HPS part in QSYS (UART module was added) and re-generating system and re-building preloader (other previous settings was not changed) I started to receive correct messages in terminal about successfull loading of U-boot SPL. But still can't run test.img. Working on it.
UPD2: Ok, I solved this problem, now it's working fine
I have just started on libusbdotnet. I have downloaded the sample code from http://libusbdotnet.sourceforge.net/V2/Index.html.
I am using a JetFlash 4GB Flash drive (a libusb-win32 filter driver was added for this drive).
The ShowInfo code works perfectly, and I can see my device info with two endpoints. Following is the device info from pastebin
http://pastebin.com/2Jdph6bY
However, the ReadOnly sample code does not work.
http://pastebin.com/hNZaEt8N
My code is almost same as that from the libsubdotnet website. I have only changed the endpoint that UsbEndpointReader uses. I have changed it from Ep01 to Ep02, because I read that the first endpoint is a control endpoint used for configuration, access control and similar stuff.
UsbEndpointReader reader = MyUsbDevice.OpenEndpointReader(ReadEndpointID.Ep02);
I always get the message "No more bytes!".
I thought that this is because of the absence of data, so I used the ReadWrite sample code.
http://pastebin.com/NiN5w9Jt
But here I also get "No more bytes!" message.
Interestly, the line
ec = writer.Write(Encoding.Default.GetBytes(cmdLine), 2000, out bytesWritten);
executes without errors.
Can pen drives be used for read write operations? Or is something wrong with the code?
A USB thumb drive implements the USB mass storage device class, which is a subset of SCSI. The specification is here.
You're not going to get anything sensible by just reading from an endpoint - you have to send the appropriate commands to get any response.
You have not chosen an easy device class to begin your exploration of USB - you may be better starting with something easier - a HID class device, perhaps (Mouse/Keyboard) though Windows does have enhanced security around mice and keyboards which may prevent you installing a filter.
If you meddle with the filesystem on the USB stick while it's mounted as a drive by Windows, you'll almost certainly run into cache-consistency problems, unless you're extremely careful about what kind of access you allow Windows to do.
I need to implement an app that monitors inbound/outbound connections by different apps on iPhone. my app is going to run in background using apple's background multitasking feature for voip and navigators.
I can use private api as my client doesn't need this app on appstore.
Thanks.
I got through this.
I didn't need any private Api to get information of inbound/outbound active connections.
Its just you need to know basic C programming and some patience.
I wrote to apple dev forums regarding this,and got response as-
From my perspective most of what I have to say about this issue is covered in the post referenced below.
<https://devforums.apple.com/message/748272#748272>>
The way to make progress on this is to:
o grab the relevant headers from the Mac OS X SDK
o look at the Darwin source for netstat to see how the pieces fit together
WARNING: There are serious compatibility risks associated with shipping an app that uses this technique; it's fine to use this for debugging and so on, but I recommend against shipping code like this to end users.
What I did step by step is -
1)downloaded code of netstat from BSD opensource -
2)add this to your new iphone project.
3)see,some header files are not present in ios sdk so you need take it copied from opensource.apple.com and add those in your iphone sdk at relevant path under-
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk/usr/include
My xcode version is 4.5.2. so this is path relevent to my xcode. you can have different path according to versions of xcodes.Anyway. and remember to add those headers in both iosSdk & iOSSimulatorSdk both so that code will work on device as well as on simulator.
4)you may find some minor errors in netstat code relating not finding definitions of some structures in header files.e.g " struct xunpcb64 " .dont wory. definitions are present there.you need to comment some "#if !TARGET_OS_EMBEDDED" #else in those header files so that ios sdk can reach in those if condition and access the definition.(need some try and error.be patient.)
5)finally you will be abe to compile your code.Cheers!!
In case you haven't seen this already, I have used it successfully on my iPhone.
https://developer.apple.com/library/ios/ipad/#qa/qa1176/_index.html
I realize it is not exactly what you want.
Generally, I agree with Suneet. All you need is network sniffer.
You can try to do partial port of WireShark (it's open source and it works on MacOS) to iOS. Both iOS and OS X share most part of the kernel, so if it's not explicitly prohibited on iOS, it should work for you.
WireShark is quite big product, so you may be intersted to look for another open source network sniffer which work on OS X.
I try to implement an application in snow Leopard, Reading Data from USB/HID device.In my application i tried following steps:
IOHIDManagerCreate()
CreateDeviceMatchingDictionary()
IOHIDManagerSetDeviceMatching()
IOHIDManagerOpen()
IOHIDManagerCopyDevices()
Create a Reference for device(IOHIDDeviceRef)
Based On the IOHIDDeviceRef i Fetch device details such as(Device ProductIDKey, Device VendorIDKey,Device ProductKey,Device Serial NumberKey,Device VersionNumberKey ect.)
IOHIDDeviceOpen(),ie :Using IOHIDDeviceRef i opened Device;
IOHIDDeviceCopyMatchingElements(); Ie Copy Matching Elements from the Device;
Create a Reference element(ie IOHIDElementRef);
Using IOHIDElementRef i retrieved Device Usage,Device Cocookie,Device UsagePage etc.
Up to this My application working Fine.
My doubts are
How can read data From Endpoint 1, My device is special purpose device having only one End point(Interrupt no synchronization data end point)?
Is their any Pipe associated with end point 1(HID Device)?;
Is their any ReadPipe and WritePipe functions in HIDManager Based Application?
Is it possible to retrieve data from USB/HID using IOHIDDeviceSetReoprtWithCallback()?
Every thing Did based on this Link:
http://developer.apple.com/library/mac/#documentation/DeviceDrivers/Conceptual/HID/new_api_10_5/tn2187.html#//apple_ref/doc/uid/TP40000970-CH214-SW7 ...
Thank you so much for your help ..
You are trying to use HID functions with non-HID device.
HID is Human Interface Device. Any HID device must conform "Device Class Definition for HID".
I suspect, your device does not conforms this specification.
So you should use other OS interface to work with your device. I suggest to use libusb. This is cross-platform library for working with USB devices on low level. It will allow you to read/write your endpoint directly.
Within VB.NET, trying to find an easy way to in a sense check the check-box "Use Windows to configure my Wireless Network Settings". This is an option that forces windows to use your wireless over third-party programs that may try to steal control. I am aware this requires to have WZC enabled within services and that's something that can be easily accomplished one way or another.
I doubt or rather cannot find a proper registry value or API call to check or initiate such a task.
I would use a registry-recorder to record the changes when manually changing the value, then its a piece of cake to implement the register change in code.
There are plenty programs that can be used to see what changes has been done in the registry, here are one free: http://www.kephyr.com/systemsherlocklite/index.phtml, but google may find more or better variants out there.
With this tool, create a registry dump:
systemsherlock.exe -dump d1.dat -regdirs HKEY_ROOT
Do the change in the wireless network settings
Do a new dump of the registry:
systemsherlock.exe -dump d2.dat -regdirs HKEY_ROOT
And last, compare them and see what has changed:
systemsherlock.exe -compare d1.dat d2.dat