manual:chapter6:usb:cmd

Get status of the USB driver

Input Stack		Output Stack
	→	#_status
Level 1	→	Level 1

Legend

Legend	Object type
O	Any object
I	Integer number
R	Real number
#	Binary number
Num	Scalar (Integer, Real or Binary number)
Z	Complex number
U	Unit
∡	Angle
A	Symbolic expression
C	Symbolic constant
V	Vector
M	Matrix
S	String
1/0	Any expression evaluating to True or False
G	Grob
F	Font
D	Binary data container
T	Tag object
L	List
cL	Case list
N	Variable name / Identifier
Dir	Directory
pDir	Packed Directory
P	Program
Lib	Library

The USBSTATUS command returns the current status of the USB driver. Information is encoded in a byte as follows:

Bit	Value	Meaning
0	Clear	USB cable is connected.
0	Set	USB cable is disconnected.
1	Clear	USB driver has not completed its configuration.
1	Set	USB driver has completed its configuration.
2	Clear	USB data is not incoming.
2	Set	USB data is incoming.

This command is new in newRPL and does not exist in userRPL.

The following program

« DO
  UNTIL
    USBSTATUS #3h ==
  END
  "OK"
»

will result in the calculator waiting in a loop for a connection to the PC to be estabilished and

1:                          "OK"
……………………………………………………………………………………

once the connection is done.

USB Communications 8 NEW

Command	Short Description
USBSTATUS	Get status of the USB driver	NEW
USBRECV	Receive an object through USB link	NEW
USBSEND	Send an object through the USB link	NEW
USBOFF	Disable USB port	NEW
USBON	Enable USB port	NEW
USBAUTORCV	Receive an object and execute it	NEW
USBARCHIVE	Create a backup on a remote machine	NEW
USBRESTORE	Restore a backup from a remote machine	NEW