mainscnt/mains-frequency-counter-rpi
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This commit is contained in:
Wolfgang Hottgenroth
2021-03-04 15:44:27 +01:00
parent 446a279277
commit 9eee986123
1 changed files with 18 additions and 8 deletions
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26
src/counter.c
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@ -22,12 +22,11 @@ const int INTR_IN = 19;
const int SPI_CHAN = 0;
const int SPI_SPEED = 1000000;
const uint32_t PRECISION = 1000;
const uint32_t COUNTER_FREQUENCY = 1e6;
config_t cfg;
const char EPSILON_KEY[] = "epsilon";
const double DEFAULT_EPSILON = 0.01;
uint32_t skipped = 0;
void isr() {
@ -81,22 +80,33 @@ int main (void) {
struct timespec timestamp;
uint32_t last_seconds = 0;
uint32_t last_milliseconds = 0;
uint32_t mainsCntSum = 0;
uint32_t mainsCntCnt = 0;
while (1) {
uint32_t period = ringbufferGet();
clock_gettime(CLOCK_REALTIME, &timestamp);
uint32_t current_seconds = timestamp.tv_sec;
uint32_t current_milliseconds = timestamp.tv_nsec / 1e6;
// add averaging and forming the struct here
uint32_t duration = ((current_seconds - last_seconds) * 1000) + (current_milliseconds - last_milliseconds);
logmsg(LOG_DEBUG, "s: %lu, ns: %lu, d: %lu, p: %lu", current_seconds, current_milliseconds, duration, period);
// logmsg(LOG_DEBUG, "s: %lu, ns: %lu, d: %lu, p: %lu", current_seconds, current_milliseconds, duration, period);
mainsCntSum += period;
mainsCntCnt += 1;
if (duration >= 1000) {
logmsg(LOG_DEBUG, "one second is over");
last_seconds = current_seconds;
last_milliseconds = current_milliseconds;
uint32_t cnt = mainsCntSum / mainsCntCnt;
mainsCntSum = 0;
mainsCntCnt = 0;
uint32_t freq = PRECISION * COUNTER_FREQUENCY / cnt;
logmsg(LOG_DEBUG, "s: %lu, f: %lu", current_seconds, freq);
}