mainscnt/mains-frequency-counter-rpi
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print frequency

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This commit is contained in:
Wolfgang Hottgenroth
2019-10-04 14:29:10 +02:00
parent c04897fe05
commit 9fdab25693
1 changed files with 8 additions and 3 deletions
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11
snippets/test1/test1.c
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@ -60,8 +60,10 @@ const uint8_t MDR1_F_BW = 0b01000000;
const uint8_t MDR1_F_CY = 0b10000000; const uint8_t MDR1_F_CY = 0b10000000;
volatile uint32_t ec = 0; uint32_t ec = 0;
volatile uint32_t diff = 0; uint32_t counter = 0;
uint32_t diff = 0;
pthread_mutex_t eventMutex = PTHREAD_MUTEX_INITIALIZER; pthread_mutex_t eventMutex = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t eventSignal = PTHREAD_COND_INITIALIZER; pthread_cond_t eventSignal = PTHREAD_COND_INITIALIZER;
@ -100,6 +102,7 @@ void isr() {
uint32_t currentCounter = read32(CMD_RD | REG_OTR); uint32_t currentCounter = read32(CMD_RD | REG_OTR);
diff = currentCounter - lastCounter; diff = currentCounter - lastCounter;
counter = currentCounter;
lastCounter = currentCounter; lastCounter = currentCounter;
ec++; ec++;
@ -136,6 +139,8 @@ int main (void) {
pthread_cond_wait(&eventSignal, &eventMutex); pthread_cond_wait(&eventSignal, &eventMutex);
pthread_mutex_unlock(&eventMutex); pthread_mutex_unlock(&eventMutex);
printf("%d %d\n", ec, diff); double f = 1.0 / (((double) diff) / 1000.0);
printf("%d %d %d %f\n", ec, counter, diff, f);
} }
} }