utils/osmo-arfcn: Implement option to get ARFCN from frequency
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/utils/osmo-arfcn.c b/utils/osmo-arfcn.c
index b88db5a..2be3958 100644
--- a/utils/osmo-arfcn.c
+++ b/utils/osmo-arfcn.c
@@ -58,6 +58,27 @@
return 0;
}
+static int freq2arfcn(int freq10, int uplink)
+{
+ uint16_t arfcn;
+
+ if (uplink != 0 && uplink != 1) {
+ fprintf(stderr, "Need to specify uplink or downlink\n");
+ return -EINVAL;
+ }
+
+ arfcn = gsm_freq102arfcn(freq10, uplink);
+
+ if (arfcn == 0xffff) {
+ fprintf(stderr, "Unable to find matching ARFCN\n");
+ return -EINVAL;
+ }
+
+ printf("%s: ARFCN %4d\n",
+ gsm_band_name(gsm_arfcn2band(arfcn)),
+ arfcn & ~ARFCN_FLAG_MASK);
+}
+
static void help(const char *progname)
{
printf("Usage: %s [-h] [-p] [-a arfcn] [-f freq] [-u|-d]\n",
@@ -66,7 +87,7 @@
int main(int argc, char **argv)
{
- int arfcn, pcs = 0;
+ int arfcn, freq, pcs = 0, uplink = -1;
int opt;
char *param;
enum program_mode mode = MODE_NONE;
@@ -84,6 +105,12 @@
mode = MODE_F2A;
param = optarg;
break;
+ case 'u':
+ uplink = 1;
+ break;
+ case 'd':
+ uplink = 0;
+ break;
case 'h':
help(argv[0]);
exit(0);
@@ -104,6 +131,10 @@
arfcn |= ARFCN_PCS;
arfcn2freq(arfcn);
break;
+ case MODE_F2A:
+ freq = (int)(atof(param) * 10.0f);
+ freq2arfcn(freq, uplink);
+ break;
}
exit(0);