fix false readings

code/main.c

@@ -3,7 +3,7 @@
 #include <util/delay.h>
 #include "modbus.h"
 
-#define HIGH_LOW_CYCLE_TIME 1
+#define HIGH_LOW_CYCLE_TIME 10
 
 uint16_t holdingRegisters[4];
 
@@ -70,6 +70,9 @@ void modbusGet(void) {
                 PORTC ^= 1 << 1;
 //                _delay_ms(10);
 //                PORTC &= ~(1 << 1);
+
+                while(PINB & (1<<4)); // wait for data ready
+
                 uint32_t tmp = HX711_get_data(3, 4, 128); 
                 //int32_t tmp = -1000;
                 holdingRegisters[0] = tmp & 0xFFFF;