I have built a cross-gcc (gcc Aug 19th, binutils Aug. 21st, newlib Aug.
27th) on cygwin for the m32c target. The small test program that I use is:
struct bit_def {
char b0:1;
char b1:1;
char b2:1;
char b3:1;
char b4:1;
char b5:1;
char b6:1;
char b7:1;
};
union byte_def{
struct bit_def bit;
char byte;
};
#define pd5_addr (*(volatile union byte_def *) 0x03eb) /* Port P5
direction register */
#define p5_addr (*(volatile union byte_def *) 0x03e9) /* Port P5
register */
#define pd5 pd5_addr.byte
#define p5_0 p5_addr.bit.b0
int main ()
{
int i=0;
pd5 = 1; // set p5_0 output
while (1)
{
while (i++<1000)
p5_0=1;
while (i++<2000)
p5_0=0;
i=0;
}
return 0;
}
The purpose of the program is to just toggle the output of Port 5_0
between 0 and 1. Actually, after building an object file with gcc
-mcpu=m16c, objcopy -Osrec, and flashing, there happens just nothing on
my M16C6N testboard. And when I try the file with the kd30 debugger, it
just hangs up.
Does anyone have a clue on what I'm doing wrong?
So long
Frank
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