libosmogsm: import hopping sequence generation code
This implementation is taken from OsmocomBB, in particular from:
target/firmware/layer1/rfch.c
Change return type to uint16_t, because neither ARFCN, nor MAI
can be negative. Add prefix 'gsm0502_' to the function's name.
Change-Id: I8aba1578cc9d1bd89d4f5d33a6e8fedc8bea789a
Related: OS#4546
diff --git a/include/osmocom/gsm/gsm0502.h b/include/osmocom/gsm/gsm0502.h
index c9901df..cb993dc 100644
--- a/include/osmocom/gsm/gsm0502.h
+++ b/include/osmocom/gsm/gsm0502.h
@@ -47,3 +47,7 @@
};
uint32_t gsm0502_fn_remap(uint32_t fn, enum gsm0502_fn_remap_channel channel);
+
+uint16_t gsm0502_hop_seq_gen(const struct gsm_time *t,
+ uint8_t hsn, uint8_t maio,
+ size_t n, const uint16_t *ma);