Major changes. Added metering and power spectrum, other fixes. Rearranged headers...

[dttsp.git] / jDttSP / specmon.c

diff --git a/jDttSP/specmon.c b/jDttSP/specmon.c
new file mode 100644 (file)
index 0000000..632fee6
--- /dev/null
+++ b/jDttSP/specmon.c
@@ -0,0 +1,51 @@
+/* specmon.c */
+
+#include <common.h>
+
+#define SLEEP (500000)
+
+char *cmdsink = "./IPC/SDR-1000-0-commands.fifo",
+     *specsrc = "./IPC/SDR-1000-0-spec.fifo";
+
+FILE *cmdfp, *spcfp;
+
+int label;
+float spec[DEFSPEC];
+
+int
+main(int argc, char **argv) {
+  int i = 0, j, k, lab = getpid();
+
+  if (!(cmdfp = fopen(cmdsink, "r+")))
+    perror(cmdsink), exit(1);
+  if (!(spcfp = fopen(specsrc, "r+")))
+    perror(specsrc), exit(1);
+
+  printf("spec OK\n");
+
+  for (;;) {
+
+    usleep(SLEEP);
+
+    fprintf(cmdfp, "reqSpectrum %d\n", lab);
+    fflush(cmdfp);
+
+    if (fread((char *) &label, sizeof(int), 1, spcfp) != 1)
+      perror("fread spectrum label"), exit(1);
+
+    if (fread((char *) spec, sizeof(float), DEFSPEC, spcfp) != DEFSPEC)
+      perror("fread spec"), exit(1);
+
+    printf("%d <%d>", i++, label);
+
+    j = 0;
+    for (k = 1; k < DEFSPEC; k++)
+      if (spec[k] > spec[j]) j = k;
+    printf(" [%d %g]\n", j, spec[j]);
+  }
+
+  fclose(cmdfp);
+  fclose(spcfp);
+
+  exit(0);
+}