2 files changed, 7 insertions(+), 0 deletions(-)

M converter/adb_usb/matrix.c
M protocol/adb.c

@@ 85,6 85,7 @@ uint8_t matrix_scan(void)
     uint8_t key0, key1;
 
     is_modified = false;
+    _delay_ms(16);  // delay for preventing overload of poor ADB keyboard controller
     codes = adb_host_kbd_recv();
     key0 = codes>>8;
     key1 = codes&0xFF;

@@ 83,6 83,12 @@ bool adb_host_psw(void)
 }
 #endif
 
+/*
+ * Don't call this in a row without the delay, otherwise it makes some of poor controllers
+ * overloaded and misses strokes. Recommended delay is 16ms.
+ *
+ * Thanks a lot, blargg! <http://geekhack.org/index.php?topic=14290.msg1068919#msg1068919>
+ */
 uint16_t adb_host_kbd_recv(void)
 {
     uint16_t data = 0;