void main(){
unsigned long buf,sp;
unsigned char data,x,y,ch;
#ifdef PARITYCHECK
unsigned char parity;
int tmp;
#endif
// char str[7];
prescaler_init();
init_mc();
spi_init();
lcd_init();
ch=x=y=0;
lcd_goto(0);
lcd_puts("initializing...");
init_lut();
lcd_clrscr();
lcd_goto(0);
while(1){
state1:
if(SPSR&(1<<SPIF)){
buf=SPDR;
if(!(buf&1)){
buf=buf>>1; //throw out start bit.
goto state2;
}
}
int main(){
init_mc();
SPCR=0; //disable spi interrupts
DDRD=(1<<PD5);
while(1){
PORTD^=(1<<PD5);
_delay_ms(1000);
}
return(0);
}
/*
* create two ctx process & 2 resource handler each ctx
* use diff ctx handler in diff process, get another process
* ctx handler through PIPE.
*/
int mc_test_inter_prcs_ctx_int(int cmd)
{
int rc;
struct ctx myctx;
struct ctx *p_ctx = &myctx;
res_hndl_t res_hndl;
ctx_hndl_t ctx_hndl;
int pdes[2];
pid_t cpid;
pthread_t thread;
__u64 stride = 0x1000;
int i;
//create pipe, child open for write
// parent open for read
pipe(pdes);
cpid = fork();
if ( 0 == cpid)
{
//child one running
pid = getpid();
debug("%d: child do init_mc \n", pid);
rc = init_mc(p_ctx, &res_hndl);
if (rc)
{
fprintf(stderr, "%d: exiting due to init_mc\n:", pid);
exit(rc);
}
//do write into pipe & wait until parent kill me
close(pdes[0]); //close read des
write(pdes[1], &p_ctx->ctx_hndl, sizeof(ctx_hndl_t));
while (1);
}
else
{
//parent
close(pdes[1]); //close write des
//lets child do there work & wait for me
sleep(1);
pid = getpid();
rc = init_mc(p_ctx, &res_hndl);
if (rc)
{
kill(cpid, SIGKILL);
return rc;
}
pthread_create(&thread,NULL,ctx_rrq_rx, p_ctx);
read(pdes[0], &ctx_hndl, sizeof(ctx_hndl_t));
fill_send_write(p_ctx, 0, pid, stride);
//set another process ctx
debug("%d: use child(%d)process ctx hndl: %d\n", pid, cpid, ctx_hndl);
for (i = 0; i< NUM_CMDS; i++)
{
p_ctx->cmd[i].rcb.ctx_id = ctx_hndl;
}
if (2 == cmd)
{
//another test is to close one of my ctx res hndl
//and use child ctx handler here
//(child has opened 2 res handler)
p_ctx->res_hndl = res_hndl;
close_res(p_ctx);
debug("%d: close res_hndl(%d) but child (%d)has opened\n",
pid, res_hndl, cpid);
for (i = 0; i< NUM_CMDS; i++)
{
p_ctx->cmd[i].rcb.res_hndl = res_hndl;
}
}
send_cmd(p_ctx);
rc = wait_resp(p_ctx);
kill(cpid, SIGKILL);
pthread_cancel(thread);
}
return rc;
}
