Re: 1 euro Olimex RISC-V mini-PC: this needs Forth ;)

albert@spenarnc.xs4all.nl wrote:

In article <vfhgqc$3sajh$1@paganini.bofh.team>,
Waldek Hebisch <antispam@fricas.org> wrote:

>
which outputs bits to data register.  To get actual output one
need to set direction register and associate PIN with GPIO function.

 
I defined set-function by ( fun# gpio#)
and redefine fun# that I always 0 for input , -1 for output.
This make a 1602 driver almost portable except for defining
the port numbers/

One pin may have several functions, not only GPIO.  Do you mean
that you change numbering of functions so that 0 is GPIO input,
-1 is GPIO output and other functions get other numbers? 

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                              Waldek Hebisch