smtech-dm620: Adjust APIdm620

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/hardware/smtech-dm620/protocol.c b/src/hardware/smtech-dm620/protocol.c
index c27c6558..edba74b9 100644
--- a/src/hardware/smtech-dm620/protocol.c
+++ b/src/hardware/smtech-dm620/protocol.c
@@ -77,7 +77,7 @@ static void dump_packet(const char *buf, int len) {
 
 #define FLOAT_PTR_CAST(x) (*(float *) (x))
 
-static float dm620_atof_ascii_digits(char *buf, char **endptr, uint8_t *digits)
+static float dm620_atof_ascii_digits(char *buf, char **endptr, int8_t *digits)
 {
 	char *tmp;
 	float value;