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Tweak time values of busywait PS/2

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
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6
protocol/ps2.c
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@ -109,12 +109,12 @@ uint8_t ps2_host_send(uint8_t data)
#endif #endif
/* terminate a transmission if we have */ /* terminate a transmission if we have */
inhibit(); inhibit();
_delay_us(100); _delay_us(200); // at least 100us
/* start bit [1] */ /* start bit [1] */
data_lo(); data_lo();
clock_hi(); clock_hi();
WAIT(clock_lo, 15000, 1); WAIT(clock_lo, 20000, 10); // may take 15ms at most until device starts clocking
/* data [2-9] */ /* data [2-9] */
for (uint8_t i = 0; i < 8; i++) { for (uint8_t i = 0; i < 8; i++) {
_delay_us(15); _delay_us(15);
@ -167,7 +167,7 @@ uint8_t ps2_host_recv_response(void)
idle(); idle();
/* wait start bit */ /* wait start bit */
wait_clock_lo(2000); wait_clock_lo(25000); // command response may take 20 ms at most
data = recv_data(); data = recv_data();
inhibit(); inhibit();