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Fix ADB missing keystrokes problem Thanks, blargg! #14 

- Add delay between scans to prevent overlaod of ADB keyboard controllers
- <http://geekhack.org/index.php?topic=14290.msg1068919#msg1068919>
This commit is contained in:
tmk 2013-10-08 12:23:25 +09:00
parent 63b3e2cbfb
commit e8e8f93bcf
2 changed files with 7 additions and 0 deletions
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1
converter/adb_usb/matrix.c
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@ -85,6 +85,7 @@ uint8_t matrix_scan(void)
uint8_t key0, key1; uint8_t key0, key1;
is_modified = false; is_modified = false;
_delay_ms(16); // delay for preventing overload of poor ADB keyboard controller
codes = adb_host_kbd_recv(); codes = adb_host_kbd_recv();
key0 = codes>>8; key0 = codes>>8;
key1 = codes&0xFF; key1 = codes&0xFF;

6
protocol/adb.c
View File

@ -83,6 +83,12 @@ bool adb_host_psw(void)
} }
#endif #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 adb_host_kbd_recv(void)
{ {
uint16_t data = 0; uint16_t data = 0;