repo2/firmware_eclairexl/usb/timer.c
| 269 | markw | #include "timer.h"
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| 275 | markw | #include "regs.h"
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| 269 | markw | ||
// this is a 32 bit counter which overflows after 2^32 milliseconds
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// -> after 46 days
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void wait_us(int unsigned num);
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void timer_init() {
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}
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| 275 | markw | #ifdef LINUX_BUILD
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#include <sys/time.h>
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| 269 | markw | msec_t timer_get_msec() {
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| 275 | markw | struct timeval x;
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gettimeofday(&x,0);
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return (x.tv_sec*1000+(x.tv_usec/1000));
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| 269 | markw | }
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| 275 | markw | #else
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msec_t timer_get_msec() {
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int res = *zpu_timer;
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| 803 | markw | res = res >> 10; // Divide by 1024, good enough for here!
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| 956 | markw | ||
| 275 | markw | return res;
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}
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| 956 | markw | ||
bool timer_elapsed(msec_t until)
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{
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msec_t now = timer_get_msec();
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if (now>=until)
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return true;
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else
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{
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unsigned int delay = until - now;
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if (delay > 0x200000)
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return true; //overflow
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else
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return false; //normal case
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}
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}
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| 275 | markw | #endif
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