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DeviceMfr - Return the manufacturer string of the device
This is a USBm.dll function that returns the Manufacturer string from a USB device.
true⁄false USBm_DeviceMfr( device, string )
The USBm_DeviceMfr function syntax has these parts:
|device||Valid device from 0 to the maximum number of devices found (minus 1) . Any other number results in a FALSE return.|
|string||Any valid string expression.|
In VB the string passed as an argument must be large enough to hold all the characters that the function places in the string. The best way to acheive this is to set the string to a large size with the String function as in this code:
|strStrng = String(250, " ")|
Note: USBm_DeviceMfr returns TRUE for a valid device.
VB Declaration (USBmAPI.bas)
|Public Declare Function USBm_DeviceMfr _|
Lib "USBm.dll" _
(ByVal device As Byte, _
ByVal manufacturer As String) _
|Dim strng As String * 255|
USBm_DeviceMfr 3, strng
frmStatus.lstDevices.AddItem "Manuf: " & strng
This code fragment shows that strng is loaded with the "manufacturer" text of device three. Assuming that the form called "Main" exists with a text box called "Info", the "manufacturer " information will be made visible to the user.
|int USBm_DeviceMfr( unsigned char device, char *manuf );|
DID, PID, VID, Mfr, Prod, Serial Number, and Firmware Version are all handled by the RobotBASIC function usbm_DeviceSpecs(ne_DeviceNumber).
Returns a string that contains information about the device. There are 7 sections seperated by the | character. You can use the Extract() function to extract each section seperately if desired. The sections are:
Hardware: U401 USB Interface U421 USB Interface U451 USB Interface
Programming: USBm DLL Programming Download Files
Application Notes: U4x1 Application Notes Misc Applications and Information FAQ
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