fweinrebe wrote:Did you check out the page of Jan Axelson
http://www.lvr.com/winusb.htm? I used it when I started with the PIC18F4550 and MS C#.
It uses the native HID driver as found in Windows.
yeah. that is not understandable. that sample code tries to do everything at the same time... bulk , interrupt , threading .. overload !
all i need is a few simple routines :
- pull the list of devices , filtered on vid and pid ( there can be more than one attached ... )
- retrieve the descriptors for each device in the above list.
- Open a device based on vid/pid and desciptor parameter ( serial number ). return a handle to this device.
- Send an array of 64 bytes ( one HID packet) to the handle (this must be blocking)
- Raise an event when a packet is received , packet is available as a string or an array of byes.
for example :
public devicelist() as integer
public lastdevice as integer
Sub FindDevices(vid as uint32,pid as uint32) : this populates 'devicelist' and sets 'lastdevice'
end sub
function GetDescriptor (deviceid as integer) as string : this fetches the decriptors from a device in the list.
end function
function Opendevice (deviceid as integer)
so i can write code like this :
finddevices(myvid,mypid)
dim myfirstdevice as integer = OpenDevice(devicelist(1))
dim myseconddevice as integer = opendevice(devicelist(2))
writepacket (myfirstdevice,x)
blabla
It doesn;t need ot be harder than that
are there any books or already made projects i can learn from?
Thank you Losic Tihomir,