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ibmpc: Fix XT reset comment and add inhibit_xt()

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tmk 2020-10-27 02:33:33 +09:00
parent 12e5a3a13e
commit 842b3f29b6
2 changed files with 13 additions and 6 deletions
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11
converter/ibmpc_usb/ibmpc_usb.c
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@ -204,9 +204,10 @@ uint8_t matrix_scan(void)
case XT_RESET: case XT_RESET:
// Reset XT-initialize keyboard // Reset XT-initialize keyboard
// XT: hard reset 500ms for IBM XT Type-1 keyboard and clones // XT: hard reset 500ms for IBM XT Type-1 keyboard and clones
// XT: soft reset 20ms min(clock Lo) // XT: soft reset 20ms min
ibmpc_host_disable(); // soft reset: inihibit(clock Lo/Data Hi) // https://github.com/tmk/tmk_keyboard/wiki/IBM-PC-XT-Keyboard-Protocol#keyboard-soft-reset
IBMPC_RST_LO(); // hard reset: reset pin Lo ibmpc_host_disable(); // soft reset: Clock Lo/Data Hi
IBMPC_RST_LO(); // hard reset: Reset pin Lo
init_time = timer_read(); init_time = timer_read();
state = XT_RESET_WAIT; state = XT_RESET_WAIT;
@ -217,9 +218,9 @@ uint8_t matrix_scan(void)
} }
break; break;
case XT_RESET_DONE: case XT_RESET_DONE:
IBMPC_RST_HIZ(); // hard reset: reset pin HiZ IBMPC_RST_HIZ(); // hard reset: Reset pin HiZ
ibmpc_host_isr_clear(); ibmpc_host_isr_clear();
ibmpc_host_enable(); // soft reset: idle(clock Hi/Data Hi) ibmpc_host_enable(); // soft reset: idle(Clock Hi/Data Hi)
xprintf("X%u ", timer_read()); xprintf("X%u ", timer_read());
init_time = timer_read(); init_time = timer_read();

8
tmk_core/protocol/ibmpc.h
View file

@ -188,11 +188,17 @@ static inline void idle(void)
data_hi(); data_hi();
} }
/* inhibit device to send */ /* inhibit device to send(AT), soft reset(XT) */
static inline void inhibit(void) static inline void inhibit(void)
{ {
clock_lo(); clock_lo();
data_hi(); data_hi();
} }
/* inhibit device to send(XT) */
static inline void inhibit_xt(void)
{
clock_hi();
data_lo();
}
#endif #endif