1 files changed, 50 insertions, 0 deletions
diff --git a/test/set22k.c b/test/set22k.c
new file mode 100644
index 0000000..51ffa1c
--- /dev/null
+++ b/test/set22k.c
@@ -0,0 +1,50 @@
+/*
+ * Test switching the 22kHz tone signal on and off on a SAT frontend.
+ * (Note: DiSEqC equipment ignores this after it has once seen a diseqc
+ *  sequence; reload the driver or unplug/replug the SAT cable to reset.)
+ *
+ * usage: FRONTEND=/dev/dvb/adapterX/frontendX set22k {on|off}
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <linux/dvb/frontend.h>
+
+
+int main (int argc, char **argv)
+{
+   char *fedev = "/dev/dvb/adapter0/frontend0";
+   int fd, r;
+
+   if (argc != 2 || (strcmp(argv[1], "on") && strcmp(argv[1], "off"))) {
+      fprintf (stderr, "usage: %s <on|off>\n", argv[0]);
+      return 1;
+   }
+   if (getenv("FRONTEND"))
+	   fedev = getenv("FRONTEND");
+   printf("set22k: using '%s'\n", fedev);
+
+   if ((fd = open (fedev, O_RDWR)) < 0) {
+      perror ("open");
+      return 1;
+   }
+
+   if (strcmp(argv[1], "on") == 0)
+      r = ioctl (fd, FE_SET_TONE, SEC_TONE_ON);
+   else
+      r = ioctl (fd, FE_SET_TONE, SEC_TONE_OFF);
+   if (r == -1)
+	   perror("ioctl FE_SET_TONE");
+
+   close (fd);
+
+   return 0;
+}
+