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average tick interrupt interval

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folkert van heusden 2024-05-11 19:32:45 +02:00
parent d1f2a16835
commit 06d189e08c
Signed by untrusted user who does not match committer: folkert
GPG key ID: 6B6455EDFEED3BD1
2 changed files with 11 additions and 1 deletions
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9
kw11-l.cpp
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@ -45,6 +45,9 @@ kw11_l::~kw11_l()
void kw11_l::show_state(console *const cnsl) const void kw11_l::show_state(console *const cnsl) const
{ {
cnsl->put_string_lf(format("CSR: %06o", lf_csr)); cnsl->put_string_lf(format("CSR: %06o", lf_csr));
if (n_t_diff)
cnsl->put_string_lf(format("Average tick interrupt interval: %.3f ms", double(t_diff_sum) / n_t_diff));
} }
void kw11_l::begin(console *const cnsl) void kw11_l::begin(console *const cnsl)
@ -96,11 +99,15 @@ void kw11_l::operator()()
// - 50 Hz depending on instrution count // - 50 Hz depending on instrution count
// - nothing executed in interval // - nothing executed in interval
// - 10 Hz minimum // - 10 Hz minimum
if (took_ms >= 1000 / 50 || current_cycle_count - interval_prev_cycle_count == 0 || now - prev_tick >= 100) { auto t_diff = now - prev_tick;
if (took_ms >= 1000 / 50 || current_cycle_count - interval_prev_cycle_count == 0 || t_diff >= 100) {
do_interrupt(); do_interrupt();
prev_cycle_count = current_cycle_count; prev_cycle_count = current_cycle_count;
t_diff_sum += t_diff;
n_t_diff++;
prev_tick = now; prev_tick = now;
} }

3
kw11-l.h
View file

@ -24,6 +24,9 @@ private:
#endif #endif
uint16_t lf_csr { 0 }; uint16_t lf_csr { 0 };
int64_t t_diff_sum { 0 };
uint64_t n_t_diff { 0 };
std::atomic_bool stop_flag { false }; std::atomic_bool stop_flag { false };
uint8_t get_lf_crs(); uint8_t get_lf_crs();