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/*
* Copyright 2022 Daniel Friesel
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#ifndef COUNTER_H
#define COUNTER_H
#define STM_TIM0 (*(volatile unsigned int*)0xf0000210)
#define STM_CAP (*(volatile unsigned int*)0xf000022c)
typedef unsigned int counter_value_t;
typedef unsigned int counter_overflow_t;
class Counter {
private:
Counter(const Counter ©);
unsigned long long startvalue, stopvalue;
public:
counter_value_t value;
counter_overflow_t overflow;
Counter() : overflow(0) {}
inline void start() {
startvalue = STM_TIM0;
startvalue += (unsigned long long)STM_CAP << 32;
}
inline void stop() {
stopvalue = STM_TIM0;
stopvalue += (unsigned long long)STM_CAP << 32;
value = (stopvalue - startvalue) & 0xffffffff;
overflow = (unsigned long long)(stopvalue - startvalue) >> 32;
}
};
extern Counter counter;
#endif
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