di0ib/tmk_keyboard
1
0
Fork 0
Code Releases Activity

Tweak time values of busywait PS/2

Browse Source
This commit is contained in:
tmk 2013-11-02 03:06:51 +09:00
parent eea3b699a6
commit 1591764cfb
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
protocol/ps2.c
View File

@ -109,12 +109,12 @@ uint8_t ps2_host_send(uint8_t data)
#endif
/* terminate a transmission if we have */
inhibit();
_delay_us(100);
_delay_us(200); // at least 100us
/* start bit [1] */
data_lo();
clock_hi();
WAIT(clock_lo, 15000, 1);
WAIT(clock_lo, 20000, 10); // may take 15ms at most until device starts clocking
/* data [2-9] */
for (uint8_t i = 0; i < 8; i++) {
_delay_us(15);
@ -167,7 +167,7 @@ uint8_t ps2_host_recv_response(void)
idle();
/* wait start bit */
wait_clock_lo(2000);
wait_clock_lo(25000); // command response may take 20 ms at most
data = recv_data();
inhibit();