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-rw-r--r--n/asserv/src/counter.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/n/asserv/src/counter.c b/n/asserv/src/counter.c
index cfdf2e6..46dc05a 100644
--- a/n/asserv/src/counter.c
+++ b/n/asserv/src/counter.c
@@ -30,7 +30,8 @@ static uint8_t counter_left_frw, counter_left_rev,
static uint8_t counter_left_old, counter_right_old;
/** Overall counter values. */
static uint16_t counter_left, counter_right;
-/** Counter differences since last update. */
+/** Counter differences since last update.
+ * Maximum of 9 significant bits, sign included. */
static int16_t counter_left_diff, counter_right_diff;
/* +AutoDec */