scale/src/lcd.cpp

#include "lcd.h"

LCD::LCD() {}

LCD::~LCD() {
    delete lcd;
}

void LCD::init() {
    lcd = new LiquidCrystal_I2C(0x27, columns, rows);
    lcd->init();
    lcd->backlight();
    lcd->setBacklight(HIGH);
}

void LCD::print_init_message(int calibration_weight) const {
    lcd->setCursor(0, 0);
    lcd->print(F("YCM Scale"));
    lcd->setCursor(0, 1);
    lcd->print(F("Scaled to: "));
    lcd->print(calibration_weight);
    lcd->print(F("g"));
    delay(1500);
}

void LCD::print_calibration(int calib_weight) const {
    lcd->setCursor(0, 1);
    lcd->print("Calibration: ");
    lcd->print(calib_weight);
    lcd->print(" g");
    delay(800);
    clear_row(1);
}

void LCD::print_weight(double weight, int precision, const char* unit) const {
    //
    // MAKE SURE NEGATIVE AND POSITIVE VALUES DON'T JUMP
    //
    if (weight > 0) {
        lcd->print(" ");
    }

    //
    // PRINT
    //
    lcd->print(weight, precision);
    lcd->print(" ");
    lcd->print(unit);
}

void LCD::print_weights(double grams, double grains) const {
    lcd->setCursor(0, 0);
    print_weight(grams, 3, "g   ");
    lcd->setCursor(0, 1);
    print_weight(grains, 2, "grn   ");
}

void LCD::print_control_result(String name, double val_min, double val_max, int result) {
    lcd->setCursor(0, 0);
    lcd->print(name);
    lcd->print(" ");
    lcd->print(val_min, 2);
    lcd->print("-");
    lcd->print(val_max, 2);

    lcd->setCursor(0, 1);

    if (result == -1) {
        lcd->print("TOO LITTLE");
    }
    else if (result == 1) {
        lcd->print("TOO MUCH  ");
    }
    else {
        lcd->print("PASSED    ");
    }
}

void LCD::clear_row(int row) const {
    lcd->setCursor(0, row);
    for (int i = 0; i < columns; i++) {
        lcd->print(" ");
    }
    lcd->setCursor(0, row);
}

void LCD::clear() const {
    lcd->clear();
}