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ibmpc: Change timeout period: 1.0ms to 2.0ms

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Timeout error *could*(not always) detects when signal sequence takes beyond 1.0ms.
Now this gives 2.0ms window at least to read signal sequence.
This commit is contained in:
tmk 2020-07-05 12:40:16 +09:00
parent 7cf3060a6d
commit 12eaedf9cf
1 changed files with 2 additions and 2 deletions
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4
tmk_core/protocol/ibmpc.c
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@ -253,8 +253,8 @@ ISR(IBMPC_INT_VECT)
if (isr_state == 0x8000) {
timer_start = t;
} else {
// should not take more than 1ms
if (timer_start != t && (uint8_t)(timer_start + 1) != t) {
// This gives 2.0ms at least before timeout
if ((uint8_t)(t - timer_start) >= 3) {
ibmpc_isr_debug = isr_state;
ibmpc_error = IBMPC_ERR_TIMEOUT;
goto ERROR;