83Plus:Software:usb8x/BASIC Interface

The OpenLib( and ExecLib commands can be used to access usb8x functions from BASIC programs. Input and output is passed through a list in the Ans variable. On input, the first element of the list holds the function number of the command to execute and the remaining elements hold input values. On output, the first element holds the success/error status (where 0 is success) and the remaining elements may hold output data values. See the information page on individual functions to determine its function number and input/output values.

Note: Versions of usb8x prior to 0.10 require that the input list be seven elements long. Elements that are not part of the defined input are ignored.

Example code to quit unless a USB device is connected:

OpenLib(USBDRV8X
{0
ExecLib
If not(Ans(2
Return

Available Functions

IsDeviceConnected	Checks if a device is connected
KillUSB	Uninitializes both USB device and usb8x driver
MouseInit	Initializes mouse driver
MouseDo	Get mouse movement/button information
GetClass	Gets class, subclass, and protocol information from device
GetIDs	Gets product and vendor IDs from device
Version	Gets usb8x version information
MSDInit	Initialize USB mass storage driver
ImportVariable	Import 8x* file in specified directory from connected USB flash drive as calculator variable in RAM/Flash
ExportVariable	Export calculator variable in RAM/Flash to connected USB flash drive in specified directory as 8x* file
KBDInit	Initialize the keyboard driver
KBDGetKey	Get a key press from the keyboard
HostInit	Initialize USB device only (for power-only devices)