Programatically read ports

syndetic1 · Joined: 02 Jan 2007 Posts: 76

Dim A as Byte
A = PORTB

gets port B into variable A

Is there a way that "B" can be a variable

eg something like A=PORT(VAR)

(BASCOM-AVR version : 2.0.8.4 )

albertsm · Joined: 09 Apr 2004 Posts: 5921 Location: Holland

look at INP() and VARPTR()
PORTB like any other register is located at an address in memory. and you could do somethings like :
someWord=varptr("PORTB")
someByte=inp(someword)

the address can be constructed at run time like any other var, but there is no run time info which means code like :
someString="PORT"
input "some letter" , letter
somestring=somestring + someletter
this would create a string like portb, portX etc.
but varptr() can not resolve thtat !

syndetic1 · Joined: 02 Jan 2007 Posts: 76

Thank you