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tools/atrf-xtal/: new option -b for relative result; -p for pass/fail
- atrf-xtal.c (eval): return the value instead of printing it - atrf-xtal.c (usage, main): new option -b for reporting the deviation from a base count - atrf-xtal.c (eval): new option -p to report an error for deviations outside the specified bound
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@ -37,6 +37,7 @@ MAIN = atrf-xtal
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include ../Makefile.common
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LDLIBS += -lm
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CFLAGS += -O9
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OBJS_$(TARGET) = atben.o
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@ -14,6 +14,8 @@
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <math.h>
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#include "atrf.h"
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@ -61,35 +63,37 @@ static int cmp(const void *a, const void *b)
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static void eval(unsigned *res, int rep)
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static double eval(unsigned *res, int rep)
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{
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double sum = 0;
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int n = 0;
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int i;
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qsort(res, rep, sizeof(*res), cmp);
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if (rep < 8) {
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printf("%u\n", res[rep >> 1]);
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return;
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}
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if (rep < 8)
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return res[rep >> 1];
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for (i = rep/8; i != rep-rep/8; i++) {
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sum += res[i];
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n++;
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}
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printf("%f\n", (double) sum/n);
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return (double) sum/n;
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}
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static void usage(const char *name)
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{
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fprintf(stderr,
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"%s [-d driver[:arg]] [-r] [-s size] [-t trim] [repetitions]\n\n"
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"usage: %s [-b count [-p ppm]] [-d driver[:arg]] [-r] [-s size] [-t trim]\n"
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" %*s [repetitions]\n\n"
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" -b count base count for relative result\n"
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" -d driver[:arg] use the specified driver (default: %s)\n"
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" -p ppm maximum deviation from base count\n"
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" -r instead of printing a mean value, dump the raw samples\n"
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" -s size payload size in bytes, 0-127 (default: %d bytes)\n"
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" -t trim trim capacitor setting, 0-15 (default: %d)\n"
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" repetitions number of measurements (default: 1)\n"
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, name, atrf_default_driver_name(), DEFAULT_SIZE, DEFAULT_TRIM);
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, name, strlen(name), "",
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atrf_default_driver_name(), DEFAULT_SIZE, DEFAULT_TRIM);
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exit(1);
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}
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@ -100,17 +104,29 @@ int main(int argc, char *const *argv)
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struct atrf_dsc *dsc;
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int size = DEFAULT_SIZE;
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int trim = DEFAULT_TRIM;
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double base = 0, ppm = 0;
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double avg, rel;
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int rep = 1;
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int dump_raw = 0;
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char *end;
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unsigned *res;
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int c, i;
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while ((c = getopt(argc, argv, "d:rs:t:")) != EOF)
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while ((c = getopt(argc, argv, "b:d:p:rs:t:")) != EOF)
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switch (c) {
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case 'b':
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base = strtof(optarg, &end);
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if (*end)
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usage(*argv);
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break;
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case 'd':
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driver = optarg;
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break;
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case 'p':
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ppm = strtof(optarg, &end);
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if (*end)
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usage(*argv);
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break;
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case 'r':
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dump_raw = 1;
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break;
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@ -132,6 +148,9 @@ int main(int argc, char *const *argv)
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usage(*argv);
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}
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if (ppm && !base)
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usage(*argv);
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switch (argc-optind) {
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case 0:
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break;
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@ -169,7 +188,18 @@ int main(int argc, char *const *argv)
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exit(0);
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}
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eval(res, rep);
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avg = eval(res, rep);
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if (!base)
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printf("%f\n", avg);
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else {
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rel = (avg/base-1)*1000000;
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printf("%+f ppm", rel);
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if (ppm && fabs(rel) > ppm) {
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printf(" (outside bounds)\n");
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return 1;
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}
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putchar('\n');
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}
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return 0;
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}
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