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-rw-r--r--2004/n/asserv/src/serial.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/2004/n/asserv/src/serial.h b/2004/n/asserv/src/serial.h
index e06c1f0..6595039 100644
--- a/2004/n/asserv/src/serial.h
+++ b/2004/n/asserv/src/serial.h
@@ -31,7 +31,7 @@ extern char serial_recv_buf[SERIAL_RECV_BUF_LEN];
extern int serial_recv_buf_n;
/* Macros de récupération de la commande recu. */
-#define HEXBIN(a) (((a) >= '0' && (a) <= '9') ? (a) - '0' : (a) - ('a' + 10))
+#define HEXBIN(a) (((a) >= '0' && (a) <= '9') ? (a) - '0' : (a) - ('a' - 10))
#define serial_recv_com() \
(serial_recv_buf[0])
#define serial_recv_int(v) \