Simple variable in loop causes trouble...

why code here below doesn't work?  it appears "doit" not assigned value of 0 in beginning code doesn't run on first run.

void loop() {

static int doit= 0;
     
while (doit==0) {
   // run code...
   doit = 1;
 }
 ...
}

if declare "doit" global variable, works fine :

int doit= 0;
void loop() {
     
while (doit==0) {
   // run code...
   doit = 1;
 }
 ...
}

i *really* don't it.  and btw if following works :

void loop() {

int doit= 0;
while (doit) {
   // run code...  the code run
   doit = 0;[font=courier][/font]
 }
}

it's not first time program, it's been years (c under unix) above makes no sense me.  could bug compiler?!  i'm under windows 7 64 bits arduino version 0017.

thanx / clue.

pierre

whenever suspect compiler do

code: [select]


avr-objdump foo.elf  -s -s >bar
gedit bar


this helps clarify if compiler blame or not.

cheers, udo

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