summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authortmk <hasu@tmk-kbd.com>2015-05-13 16:53:32 +0900
committertmk <hasu@tmk-kbd.com>2015-05-13 16:53:32 +0900
commita8822a16b4895e862cf26a3b64863fc082af2888 (patch)
treea0c527b0c5f4d7f7eba5d7fc1c2a270d36c84f14
parentb085d762d5f151ce3f72d161ba2943862a02ca1e (diff)
hhkb: Fix scan rate for HHKB JP #203
-rw-r--r--keyboard/hhkb/matrix.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/keyboard/hhkb/matrix.c b/keyboard/hhkb/matrix.c
index fb96997944..14fae0b82c 100644
--- a/keyboard/hhkb/matrix.c
+++ b/keyboard/hhkb/matrix.c
@@ -132,7 +132,13 @@ uint8_t matrix_scan(void)
// NOTE: KEY_STATE keep its state in 20us after KEY_ENABLE.
// This takes 25us or more to make sure KEY_STATE returns to idle state.
+#ifdef HHKB_JP
+ // Looks like JP needs faster scan due to its twice larger matrix
+ // or it can drop keys in fast key typing
+ _delay_us(30);
+#else
_delay_us(75);
+#endif
}
if (matrix[row] ^ matrix_prev[row]) matrix_last_modified = timer_read32();
}