You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
116 lines
3.1 KiB
116 lines
3.1 KiB
/*
|
|
* LiquidMenu library - getters_menu.ino
|
|
*
|
|
* This example demonastrates how to use getter functions instead of
|
|
* variables in "LiquidScreen" objects.
|
|
*
|
|
* It's possible to replace the variables in the "LiquidScreen"
|
|
* objects with getter functions in order to simplify the code in the
|
|
* main loop and reduce memory footprint.
|
|
* The getter functions can be of any return type, but they must have
|
|
* no parameters (e.g. bool getButtonState(), int getPosition()...).
|
|
*
|
|
* The circuit:
|
|
* https://github.com/VasilKalchev/LiquidMenu/blob/master/examples/K_getters_menu/getters_menu.png
|
|
* - LCD RS pin to Arduino pin 12
|
|
* - LCD E pin to Arduino pin 11
|
|
* - LCD D4 pin to Arduino pin 5
|
|
* - LCD D5 pin to Arduino pin 4
|
|
* - LCD D6 pin to Arduino pin 3
|
|
* - LCD D7 pin to Arduino pin 2
|
|
* - LCD R/W pin to ground
|
|
* - LCD VSS pin to ground
|
|
* - LCD VDD pin to 5V
|
|
* - 10k ohm potentiometer: ends to 5V and ground, wiper to LCD V0
|
|
* - 150 ohm resistor from 5V to LCD Anode
|
|
* - LCD Cathode to ground
|
|
* - ----
|
|
* - some analog input to Arduino pin A1 (unconnected also works)
|
|
*
|
|
* Created Ocboter 11, 2018
|
|
* by José Manuel Pérez - https://github.com/jmpmscorp
|
|
*
|
|
* https://github.com/VasilKalchev/LiquidMenu
|
|
*
|
|
*/
|
|
|
|
#include <LiquidCrystal.h>
|
|
#include <LiquidMenu.h>
|
|
|
|
const byte LCD_RS = 12;
|
|
const byte LCD_E = 11;
|
|
const byte LCD_D4 = 5;
|
|
const byte LCD_D5 = 4;
|
|
const byte LCD_D6 = 3;
|
|
const byte LCD_D7 = 2;
|
|
//LCD R/W pin to ground
|
|
//10K potentiometer wiper to VO
|
|
LiquidCrystal lcd(LCD_RS, LCD_E, LCD_D4, LCD_D5, LCD_D6, LCD_D7);
|
|
|
|
const byte potPin = A1;
|
|
|
|
unsigned long updatePeriod = 500;
|
|
unsigned long updateLastMs = 0;
|
|
|
|
// This is the first getter function, it reads the potentiometer value.
|
|
int readPot() {
|
|
return analogRead(potPin);
|
|
}
|
|
|
|
// This strings will be used by the second getter function.
|
|
const char potMinStr[] = "minimum";
|
|
const char potLowStr[] = "low";
|
|
const char potHighStr[] = "high";
|
|
const char potMaxStr[] = "maximum";
|
|
|
|
// This getter function demonstrates how to return a pointer to a string.
|
|
const char* getPotPosition() {
|
|
unsigned int potValue = readPot();
|
|
if (potValue < 10) {
|
|
return potMinStr;
|
|
} else if (potValue < 512) {
|
|
return potLowStr;
|
|
} else if (potValue < 1000) {
|
|
return potHighStr;
|
|
} else {
|
|
return potMaxStr;
|
|
}
|
|
}
|
|
|
|
LiquidLine welcome_line1(0, 0, "LiquidMenu ", LIQUIDMENU_VERSION);
|
|
LiquidLine welcome_line2(0, 1, "Getters menu");
|
|
LiquidScreen welcome_screen(welcome_line1, welcome_line2);
|
|
|
|
LiquidLine potValue_line(0, 0, "Value: ", readPot);
|
|
LiquidLine potPosition_line(0, 1, getPotPosition);
|
|
LiquidScreen pot_screen(potValue_line, potPosition_line);
|
|
|
|
LiquidMenu menu(lcd);
|
|
|
|
void setup() {
|
|
Serial.begin(250000);
|
|
Serial.println("Getters menu");
|
|
|
|
pinMode(potPin, INPUT);
|
|
|
|
lcd.begin(16, 2);
|
|
|
|
menu.add_screen(welcome_screen);
|
|
menu.add_screen(pot_screen);
|
|
|
|
// Display the welcome screen as a splash screen.
|
|
menu.update();
|
|
delay(1000);
|
|
if (menu.get_currentScreen() == &welcome_screen) {
|
|
menu.change_screen(&pot_screen);
|
|
menu.update();
|
|
}
|
|
}
|
|
|
|
void loop() {
|
|
if (millis() - updateLastMs > updatePeriod) {
|
|
updateLastMs = millis();
|
|
|
|
menu.update();
|
|
}
|
|
}
|
|
|