Hi again,
>
> [j...@iceland anacomp]$ tclsh check.tcl
> couldn't load file "../../src/simulavr.so": ../../src/simulavr.so:
> undefined symbol: inflateInit_
> while executing
> "load ../../src/simulavr.so"
> (file "check.tcl" line 8)
>
I could not reproduce this problem.
> OK not I have it trying to run but as you can see from above there
> are other issues. Apparently it needs other .so files.
>>> =====================
>>> #include <stdio.h>
>>> int main() {
>>> puts( "hello\n" );
>>> }
>>> ======================
>>>
>> main.c
>> OK!
>>
>>> ....../simulavr -f hello -d atmega128 -Texit
>>>
>>>
>> OK!
>>
>>> If so, where does the output go? I see nothing but the program
>>> appears to run correctly according to the trace file.
>>>
>>>
>>
>> There is no output :-)
>> You have not asked anything to print out.
> Huh? I used stdout via puts. Where did that go?
Oh yes, look on the screen inside the controller :-)
I have no idea where stdio goes with libc. But I dig in the examples of
libc an could give you the example from libc:
1
2 #include <stdio.h>
3 char* port=0x67;
4
5 static int uart_putchar(char c, FILE *stream);
6
7 static FILE mystdout = FDEV_SETUP_STREAM(uart_putchar, NULL,
8 _FDEV_SETUP_WRITE);
9
10 static int
11 uart_putchar(char c, FILE *stream)
12 {
13
14 *port=c;
15 return 0;
16 }
17
18 int
19 main(void)
20 {
21 stdout = &mystdout;
22 printf("Hello, world!\n");
23
24 return 0;
25 }
26
The original example goes to uart port, but I will show how to insert a
new special pipe register. I use these pipes to do printf debugging.
The atmega128 has at 0x67 no register (reserved) so we could place here
a pipe without disturbing any other functionality of the core.
The simulation now runs with:
simulavr -W 0x67,/dev/stdout -datmega128 -f hello -Texit -ttrace
or
simulavr -W 0x67,- -datmega128 -f hello -Texit -ttrace
-W is "Write to pipe" with register offset in avr memory space. After
seperator ',' the filename is given and a '-' ist stdout as normal with
other linux shell commands.
If you have a bit spare time you could add this to the texi doc file :-)
Your English could be much better than mine :-)
>
> Where does the UART go?
Simply to the uart port pins if setup the uart as uart! If not, you will
see nothing n the pins because default is port configuration and not uart.
> I see mention of this in the command line help:
>
> -u run with user interface for external pin handling at
> port 7777
>
> Does this mean I can see the pins changing when the GUI runs?
Yes, and you can modify them from gui and you can add special components
like a pc keyboard or a lcd for example.
Bye
Klaus
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