// Just a sample project to learn how to make an electronic scale using an ESP32 and HX711 load cell
#include <Arduino.h>
#include "soc/rtc.h"
#include "HX711.h"

const int LOADCELL_DOUT_PIN = 16;
const int LOADCELL_SCK_PIN = 4;

HX711 scale;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  rtc_cpu_freq_config_t config;
  rtc_clk_cpu_freq_get_config(&config);
  rtc_clk_cpu_freq_to_config(RTC_CPU_FREQ_80M, &config);
  rtc_clk_cpu_freq_set_config_fast(&config);
  scale.begin(LOADCELL_DOUT_PIN, LOADCELL_SCK_PIN);
}

void loop() {
  // put your main code here, to run repeatedly:
  if (scale.is_ready()) {
    scale.set_scale();
    Serial.println("Taring... Remove any weights from the scale.");
    delay(5000);
    scale.tare();
    Serial.println("Place a weight on the scale");
    delay(5000);
    long reading = scale.get_units(10);
    Serial.print("Result: ");
    Serial.println(reading);
  }
  else {
    Serial.println("HX711 not found");
  }
  delay(1000);
}