altos: Share getnibble function

Two implementations of the same function, one in cc1111/ao_dbg.c and
the other in core/ao_send_packet.c.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/core/ao.h b/src/core/ao.h
index 81d92e72..1aff3d49 100644
--- a/src/core/ao.h
+++ b/src/core/ao.h
@@ -170,6 +170,10 @@ ao_cmd_hex(void);
 void
 ao_cmd_decimal(void);
 
+/* Read a single hex nibble off stdin. */
+uint8_t
+ao_getnibble(void);
+
 uint8_t
 ao_match_word(__code char *word);