| Line 60... |
Line 60... |
}
|
}
|
}
|
}
|
|
|
|
|
/**********************************************************************//**
|
/**********************************************************************//**
|
* Set new system time.
|
|
*
|
|
* @note The MTIME timer increments with the primary processor clock.
|
|
*
|
|
* @param[in] time New system time (uint64_t)
|
|
**************************************************************************/
|
|
void neorv32_mtime_set_time(uint64_t time) {
|
|
|
|
MTIME = time;
|
|
}
|
|
|
|
|
|
/**********************************************************************//**
|
|
* Get current system time since reset.
|
* Get current system time since reset.
|
*
|
*
|
* @note The MTIME timer increments with the primary processor clock.
|
* @note The MTIME timer increments with the primary processor clock.
|
*
|
*
|
* @return Current system time (uint64_t)
|
* @return Current system time (uint64_t)
|
**************************************************************************/
|
**************************************************************************/
|
uint64_t neorv32_mtime_get_time(void) {
|
uint64_t neorv32_mtime_get_time(void) {
|
|
|
union {
|
return MTIME;
|
uint64_t uint64;
|
|
uint32_t uint32[sizeof(uint64_t)/2];
|
|
} sys_mtime;
|
|
uint32_t tmp;
|
|
|
|
// make sure there is no overflow in mtime_lo during read
|
|
while (1) {
|
|
sys_mtime.uint32[1] = MTIME_HI;
|
|
sys_mtime.uint32[0] = MTIME_LO;
|
|
tmp = MTIME_HI;
|
|
if (sys_mtime.uint32[1] == tmp) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return sys_mtime.uint64;
|
|
}
|
}
|
|
|
|
|
/**********************************************************************//**
|
/**********************************************************************//**
|
* Set compare time register (MTIMECMP) for generating interrupts.
|
* Set compare time register (MTIMECMP) for generating interrupts.
|
| Line 113... |
Line 84... |
*
|
*
|
* @param[in] timecmp System time for interrupt (uint64_t)
|
* @param[in] timecmp System time for interrupt (uint64_t)
|
**************************************************************************/
|
**************************************************************************/
|
void neorv32_mtime_set_timecmp(uint64_t timecmp) {
|
void neorv32_mtime_set_timecmp(uint64_t timecmp) {
|
|
|
MTIMECMP_LO = 0xFFFFFFFF; // prevent mtimecmp from temporarily becoming smaller than the lesser of the old and new values
|
MTIMECMP_LO = -1; // prevent mtimecmp from temporarily becoming smaller than the lesser of the old and new values
|
MTIMECMP = timecmp;
|
MTIMECMP = timecmp;
|
}
|
}
|
|
|
|
|
/**********************************************************************//**
|
/**********************************************************************//**
|
