void setup() {
// put your setup code here, to run once:
volatile char*dirf;
dirf=0x30;
volatile char*outf;
outf=0x31;
*outf=0x01;
}
void loop() {
// put your main code here, to run repeatedly:
char x;
volatile long m;
volatile char*outf;
outf=0x31;
*outf=0x00;
for(m=0;m<100000;m++);
*outf=0x10;
}