[PATCH] libosmocore[master]: utils: add function gsm_print_fn2gsmtime()

[dexter]

Review at  https://gerrit.osmocom.org/3048

utils: add function gsm_print_fn2gsmtime()

Convert a given frame number into a printable string that displays
the sub components of the frame number.

Change-Id: I8015d2ded3940b01b35df7b72fc35c70c25e9926
---
M include/osmocom/gsm/gsm_utils.h
M src/gsm/gsm_utils.c
M src/gsm/libosmogsm.map
3 files changed, 19 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/48/3048/1

diff --git a/include/osmocom/gsm/gsm_utils.h b/include/osmocom/gsm/gsm_utils.h
index 998f681..1c07b9b 100644
--- a/include/osmocom/gsm/gsm_utils.h
+++ b/include/osmocom/gsm/gsm_utils.h
@@ -165,6 +165,9 @@
 /* Convert from frame number to GSM time */
 void gsm_fn2gsmtime(struct gsm_time *time, uint32_t fn);
 
+/* Parse GSM Frame Number into printable string */
+char *gsm_print_fn2gsmtime(uint32_t fn);
+
 /* Convert from GSM time to frame number */
 uint32_t gsm_gsmtime2fn(struct gsm_time *time);
 
diff --git a/src/gsm/gsm_utils.c b/src/gsm/gsm_utils.c
index 61d3f83..cbff71b 100644
--- a/src/gsm/gsm_utils.c
+++ b/src/gsm/gsm_utils.c
@@ -749,6 +749,21 @@
 	time->tc = (time->fn / 51) % 8;
 }
 
+/*! Parse GSM Frame Number into printable string
+ *  \param[in] fn GSM Frame Number
+ *  \returns pointer to printable string */
+char *gsm_print_fn2gsmtime(uint32_t fn)
+{
+	static char result[256];
+	struct gsm_time time;
+
+	gsm_fn2gsmtime(&time, fn);
+	snprintf(result, sizeof(result), "%02u/%02u/%02u/%02u/", time.t1, time.t2,
+		 time.t3, time.tc);
+
+	return result;
+}
+
 /*! Encode decoded \ref gsm_time to Frame Number
  *  \param[in] time GSM Time in decoded structure
  *  \returns GSM Frame Number */
diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index e992a4f..9669067 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -272,6 +272,7 @@
 gsm_band_name;
 gsm_band_parse;
 gsm_fn2gsmtime;
+gsm_print_fn2gsmtime;
 gsm_get_octet_len;
 gsm_gsmtime2fn;
 

-- 
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I8015d2ded3940b01b35df7b72fc35c70c25e9926
Gerrit-PatchSet: 1
Gerrit-Project: libosmocore
Gerrit-Branch: master
Gerrit-Owner: dexter <pmaier at sysmocom.de>