#include "clock.h"
#include "modbus.h"
-#define ECHO_TIMEOUT (CLOCK_HZ/20) // 50 ms
-#define MEASUREMENT_WAIT (4*ECHO_TIMEOUT)
+#define ECHO_TIMEOUT (CLOCK_HZ/10) // 100 ms
+#define MEASUREMENT_WAIT (2*ECHO_TIMEOUT)
#define MEASUREMENT_SHIFT 2 // running avg (1 << M_SHIFT)
#define N_TRIGGERS 3