On Tue, 2011-03-22 at 10:02 +0800, duck donal wrote:
> Hi All,
> I'm a newbie for sdcc.
> A few days ago, I was in use of SDCC, ran into a problem.
> So,what is the solutions?To modify the program?How to do it?
> Or modify the sdcc?
Hi Donald,
Here is your example code back, I modified it a bit to
have it succesfully compile with sdcc.
As opposed to arm-elf-gcc sdcc does not need or use the
return at the end of a program, embedded programs usually
never return and stay in a while(1) loop forever :-)
#include <p89lpc938.h>
void main(void)
{
unsigned char j;
unsigned int i;
while(1)
{
P1_7 = 1;
while(P1_7 == 0)
{
for(i = 1; i <= 500; i++)
{
P1_0 = !P1_0;
for(j = 0; j <= 50; j++)
{
}
}
for(i = 1; i <= 250; i++)
{
P1_0 = !P1_0;
for(j = 0; j <= 100; j++)
{
}
}
}
}
}
roelofh@baywatch:~/tangtao$ sdcc tang.c
roelofh@baywatch:~/tangtao$ ll
total 196
-rw-r--r-- 1 roelofh domainusers 13302 2011-03-22 10:48 tang.asm
-rw-r--r-- 1 roelofh domainusers 333 2011-03-22 10:48 tang.c
-rw-r--r-- 1 roelofh domainusers 620 2011-03-22 10:48 tang.ihx
-rw-r--r-- 1 roelofh domainusers 215 2011-03-22 10:48 tang.lnk
-rw-r--r-- 1 roelofh domainusers 35446 2011-03-22 10:48 tang.lst
-rw-r--r-- 1 roelofh domainusers 34876 2011-03-22 10:48 tang.map
-rw-r--r-- 1 roelofh domainusers 1129 2011-03-22 10:48 tang.mem
-rw-r--r-- 1 roelofh domainusers 6201 2011-03-22 10:48 tang.rel
-rw-r--r-- 1 roelofh domainusers 35446 2011-03-22 10:48 tang.rst
-rw-r--r-- 1 roelofh domainusers 47706 2011-03-22 10:48 tang.sym
roelofh@baywatch:~/tangtao$ sdcc -v
SDCC : mcs51 3.0.1 #6066 (23 Nov 2010) (Linux)
You will find the header files in /usr/local/share/sdcc/include/mcs51/
Please have a look at them and include the one you need for your
processor. I have included a random one for example.
roelof
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