Capsim Block Documentation
This star simulates a sampler circuit. Triggering is on the positive edge of the clock.
| Port | Type | Name | |
|---|---|---|---|
| 0 | float | x | |
| 1 | float | clock |
| Num | Description | Type | Name | Default Value | |
|---|---|---|---|---|---|
| 0 | Enter phase recording file, none if no recording | file | phfile_name | phfile | |
| 1 | Enter frame number | int | frame | 8 |
| Num | Type | Name | Initial Value | Description |
|---|---|---|---|---|
| 0 | FILE* | fp | ||
| 1 | int | count | ||
| 2 | int | done | ||
| 3 | int | inbufs | ||
| 4 | int | outbufs | ||
| 5 | int | stdflag | 0 |
int phase; int no_samples; |
|---|
if((inbufs = NO_INPUT_BUFFERS()) != 2
|| (outbufs = NO_OUTPUT_BUFFERS()) != 1) {
fprintf(stderr,"sampler: i/o buffers connect problem\n");
return(1);
}
if(frame < 1) {
fprintf(stderr,"sampler: improper frame number\n");
return(2);
}
if(strncmp(phfile_name,"std",3) == 0) {
fp = stdout;
stdflag = 1;
}
else if(strncmp(phfile_name,"none",4) == 0) {
stdflag = -1;
}
else if( (fp = fopen(phfile_name, "w")) == NULL ) {
fprintf(stderr,"sampler: can't open output file\n");
return(3);
}
|
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/* note the minimum number of samples on the input */
/* buffers and iterate that many times */
for(no_samples=MIN_AVAIL(); no_samples >0; --no_samples)
{
IT_IN(0);
IT_IN(1);
phase = count % frame;
if (phase == 0) {
done = 0;
}
if ((done == 0) && (clock(0) > 0.5)) {
done = 1;
if(IT_OUT(0)) {
KrnOverflow("sampler1",0);
return(99);
}
OUTF(0,0) = x(0);
if (stdflag >= 0) fprintf(fp,"%d\n",phase);
}
if ((done == 0) && (phase == (frame - 1))) {
if(IT_OUT(0)) {
KrnOverflow("sampler1",0);
return(99);
}
OUTF(0,0) = x(0);
if (stdflag >= 0) fprintf(fp,"%d\n",phase);
}
count = phase + 1;
}
return(0);
|
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if(!stdflag && stdflag > 0) fclose(fp);
|
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/* Capsim (r) Text Mode Kernel (TMK) Star Library (Blocks)
Copyright (C) 1989-2017 Silicon DSP Corporation
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
http://www.silicondsp.com
Silicon DSP Corporation
Las Vegas, Nevada
*/
|
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/* sampler1.s */ /************************************************************** sampler1.s **************************************************************** Inputs: x, the data stream clock, the triggering clock Output: y, the sampled version of x **************************************************************** This star simulates a sampler circuit. Triggering is on the positive edge of the clock. |
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