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set refresh to 64Hz as the real HP 48

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Gwenhael Le Moine 2024-04-09 14:32:45 +02:00
parent 9b18c615cc
commit 923bcabc5c
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1 changed files with 2 additions and 2 deletions
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src/main.c
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@ -72,12 +72,12 @@ int main( int argc, char** argv )
/* set the real time interval timer */
/************************************/
/*
Every 20000 µs setitimer will trigger a SIGALRM
Every <interval>µs setitimer will trigger a SIGALRM
which will set got_alarm to true
In emulate() got_alarm triggers LCD refresh and UI event handling
*/
struct itimerval it;
int interval = 20000;
int interval = 15625; /* 64Hz according to https://www.hpcalc.org/hp48/docs/faq/48faq-6.html */
it.it_interval.tv_sec = 0;
it.it_interval.tv_usec = interval;
it.it_value.tv_sec = 0;