RISCV_picorv32_fpga/sw/firmware/timer.c

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// This is free and unencumbered software released into the public domain.
//
// Anyone is free to copy, modify, publish, use, compile, sell, or
// distribute this software, either in source code form or as a compiled
// binary, for any purpose, commercial or non-commercial, and by any
// means.
#include "firmware.h"
#define TIMER_PORT 0xffff0030
//volatile int n;
int32_t timer(void)
{
return *((volatile uint32_t*)TIMER_PORT);
}
long long time_us(void)
{
return *((volatile uint32_t*)TIMER_PORT) / 100;
}