utility functions to convert RXLEV into dBm and vice versa
diff --git a/openbsc/src/gsm_utils.c b/openbsc/src/gsm_utils.c
index fe0b496..9439993 100644
--- a/openbsc/src/gsm_utils.c
+++ b/openbsc/src/gsm_utils.c
@@ -160,6 +160,28 @@
return -EINVAL;
}
+/* According to TS 08.05 Chapter 8.1.4 */
+int rxlev2dbm(u_int8_t rxlev)
+{
+ if (rxlev > 63)
+ rxlev = 63;
+
+ return -110 + rxlev;
+}
+
+/* According to TS 08.05 Chapter 8.1.4 */
+u_int8_t dbm2rxlev(int dbm)
+{
+ int rxlev = dbm + 110;
+
+ if (rxlev > 63)
+ rxlev = 63;
+ else if (rxlev < 0)
+ rxlev = 0;
+
+ return rxlev;
+}
+
void generate_backtrace()
{
int i, nptrs;