HX711HX711HX711

/* * Hx711.cpp * * Created on: Oct 31, 2012 * Author: agu */ #include "Hx711.h" Hx711::Hx711(int IO_DOUT,int IO_SCK) { DOUT = IO_DOUT; SCK = IO_SCK; pinMode(SCK, OUTPUT); pinMode(DOUT, INPUT); } void Hx711::setScale(float IO_scale) { scale = IO_scale; } void Hx711::setOffset(long IO_offset) { offset = IO_offset; } long Hx711::getValue() { unsigned long Count; unsigned char i; digitalWrite(SCK,LOW); Count = 0; while(digitalRead(DOUT) == 1); for(i=0;i<24;i++) { digitalWrite(SCK,HIGH); Count = Count<<1; digitalWrite(SCK,LOW); if(digitalRead(DOUT) == 1) Count++; } digitalWrite(SCK,HIGH); Count = Count^0x800000; digitalWrite(SCK,LOW); return Count; } long Hx711::getAverageValue(char IO_times) { long sum=0; char i; for(i=0;i<IO_times;i++) { sum += getValue(); } return sum/IO_times; } float Hx711::getWeight(char IO_times) { long temp; temp = getAverageValue(IO_times) - offset; return (float)temp/scale; }