[En-Nut-Discussion] in portdio.c sample

[조상만]

Hi,

I did use portdio.c sample code.

I have some questions.

I modified some parts in the code.

that is,  (as output)

1)  outp(0xf0, DDRD);-> outp(0x11, DDRD);
    outp(0x0f, PORTD);-> outp(0xff, PORTD);
It is ok, I used 'reset' command as below.

200 Welcome to portdio. Type help to get help.
210 11111111
210 OK
210 01111111
210 OK
210 00111111
210 OK
210 00011111
210 OK
210 00001111  

This time, I modified some parts as below. (as input)

outp(0xf0, DDRD);-> outp(0x00, DDRD);
outp(0x0f, PORTD);-> outp(0xff, PORTD);

Although I used 'reset' command, however, I failed to set Port D bits as below.
If Poft D is set as input, Can't I modified port bits?
If it is right, Can you explain to me the reason ?

(command sequence in telnet prompt: query -> reset4 ->reset3 -> reset2 -> reset1 ) 

200 Welcome to portdio. Type help to get help.
210 11111111
210 OK
210 11111111
210 OK
210 11111111
210 OK
210 11011111
210 OK
210 11011111

sincerely yours.

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