int main(void)
{
int m,od,ext_div;
int fvco,fout;
int ret;
int * freq_table = NULL;
int flag;
freq_table = init_freq_table(F_MIN, F_MAX, crystal);
#ifdef DEBUG
printf(" === Freq table before ===\n");
show_freq(freq_table);
#endif
for(ext_div = 0; ext_div < 1024; ext_div++){
for(od = 0; od <= 2; od++){
for(m = 1; m < 512; m++){
fvco = calc_fvco(m, 1);
if(fvco < FVCO_MIN || fvco > FVCO_MAX){
continue;
}
fout = calc_fout(fvco, od, ext_div);
debug("--- fvco: %d, fout: %d, od: %d, m: %d, ext_div: %d\n",fvco,fout, od, m, ext_div);
if(fout < F_MIN || fout > F_MAX){
debug("=== skip fout %d\n",fout);
continue;
}
debug("--- fout: %d, od: %d, m: %d, ext_div: %d\n",fout,od, m, ext_div);
if((fout / (crystal / 1000)) != ((fout / crystal) * 1000))
continue;
/* get a poper fout */
debug("=== found fvco %d, fout %d, m %d, od %d, ext_div, %d\n",
fvco,fout,m, od, ext_div);
ret = add_freq_to_table(freq_table, fout, fvco, m, od, ext_div);
if(ret == 0)// Add successful
continue;
if(ret == -1)// Alread have this item
continue;
if(ret == -2)
goto FINISH;
}
}
}
FINISH:
printf(" ======= Meson8 syspll freq table =======\n");
show_freq(freq_table);
printf(" ======= Meson8 syspll freq table finished =======\n");
free(freq_table);
return 0;
}
void find_best_coeffs(double fvco)
{
double br, fvco_err;
double min_fvco_err=100.0;
int min_n, min_m, min_p, min_q, min_r;
int n, m, nstroke, p, q , r;
br=calc_target_br(fvco, fin);
//printf("Fvco=%f; target BR: %f\n", fvco, br);
for(m=511; m>0; m--)
{
n=(int)((double)m*br);
if(n>4095)
continue;
fvco_err=fabs(calc_fvco(fin, m, n)-fvco);
p=calc_p(n, m);
nstroke=calc_nstroke(n, p);
q=calc_q(nstroke, m);
r=calc_r(nstroke, m, q);
if(is_valid(fvco, q, p, r))
{
if(fvco_err<min_fvco_err)
{
min_fvco_err=fvco_err;
min_n=n;
min_m=m;
min_p=p;
min_q=q;
min_r=r;
}
}
}
//printf("[N=%d|M=%d] Fvco=%0.3f, P=%d, Q=%d, R=%d\n", min_n, min_m, fvco, min_p, min_q, min_r);
//printf("Error: %f (%.2f %%)\n", min_fvco_err, (min_fvco_err/fvco)*100.0);
printf("%0.6f;%0.3f;%d;%d;%d;[%d;%d]\n", fvco, min_fvco_err*1000.0, min_p, min_q, min_r, min_n, min_m);
}
