ignore peaks
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8f2768c25c
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@ -19,6 +19,8 @@ const int SPI_SPEED = 1000000;
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config_t cfg;
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const char EPSILON_KEY = "epsilon";
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const double DEFAULT_EPSILON = 0.01;
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void isr() {
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static uint32_t lastCounter = 0;
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@ -59,6 +61,7 @@ void start() {
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}
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int main (void) {
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readConfig();
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init();
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ledInit();
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@ -66,12 +69,25 @@ int main (void) {
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influxInit(&cfg);
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start();
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double epsilon;
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if (! config_lookup_float(&cfg, EPSILON_KEY, &epsilon)) {
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epsilon = DEFAULT_EPSILON;
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}
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double lastF = 0;
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bool settled = false;
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uint8_t ledTick = 0;
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while (1) {
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uint32_t diff = ringbufferGet();
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double f = 1.0 / (((double) diff) / 1000000.0);
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if (settled && (abs(f - lastF) > epsilon)) {
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printf("Current f=%f, last f=%f, gradient too large, skipped\n", f, lastF);
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f = lastF;
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}
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lastF = f;
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// printf("%f\n", f);
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influxAddFrequency(f);
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@ -79,7 +95,9 @@ int main (void) {
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if (ledTick == 50) {
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ledTick = 0;
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led(E_GREEN, false);
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settled = true;
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}
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}
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// will never be reached
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