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- // Do not remove the include below
- // Untuk eclipse IDE
- #include "unoTemplate.h"
- //-----------------------------------------------------------------
- /*
- //The setup function is called once at startup of the sketch
- //Bare minimum Arduino sketch:
- void setup()
- {
- // Add your initialization code here
- }
- // The loop function is called in an endless loop
- void loop()
- {
- //Add your repeated code here
- }
- */
- //-----------------------------------------------------------------
- /* //Untuk AVR
- //avr-gcc -Wall -g -c "%f"
- //avr-gcc -Wall -g -o "%e" "%f"
- #define __AVR_ATmega328P__
- #ifndef F_CPU
- #define F_CPU 16000000UL
- #endif
- #include <avr/io.h>
- #include <util/delay.h>
- int main(void)
- {
- return 0;
- }
- */
- //-----------------------------------------------------------------
- //Sample using LiquidCrystal library
- #include <LiquidCrystal.h>
- /*******************************************************
- This program will test the LCD panel and the buttons
- Mark Bramwell, July 2010
- ********************************************************/
- /*
- Analog 0 Button (select, up, right, down and left)
- Digital 4 DB4
- Digital 5 DB5
- Digital 6 DB6
- Digital 7 DB7
- Digital 8 RS (Data or Signal Display Selection)
- Digital 9 Enable
- Digital 10 Backlit Control
- */
- // select the pins used on the LCD panel
- LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
- // define some values used by the panel and buttons
- int lcd_key = 0;
- int adc_key_in = 0;
- #define btnRIGHT 0
- #define btnUP 1
- #define btnDOWN 2
- #define btnLEFT 3
- #define btnSELECT 4
- #define btnNONE 5
- int freeRam ();
- // read the buttons
- int read_LCD_buttons()
- {
- adc_key_in = analogRead(0); // read the value from the sensor
- // my buttons when read are centered at these valies: 0, 144, 329, 504, 741
- // we add approx 50 to those values and check to see if we are close
- if (adc_key_in > 1000) return btnNONE; // We make this the 1st option for speed reasons since it will be the most likely result
- // For V1.1 us this threshold
- /*
- if (adc_key_in < 50) return btnRIGHT;
- if (adc_key_in < 250) return btnUP;
- if (adc_key_in < 450) return btnDOWN;
- if (adc_key_in < 650) return btnLEFT;
- if (adc_key_in < 850) return btnSELECT;
- */
- // For V1.0 comment the other threshold and use the one below:
- if (adc_key_in < 50) return btnRIGHT;
- if (adc_key_in < 195) return btnUP;
- if (adc_key_in < 380) return btnDOWN;
- if (adc_key_in < 555) return btnLEFT;
- if (adc_key_in < 790) return btnSELECT;
- return btnNONE; // when all others fail, return this...
- }
- void setup()
- {
- //lcd.begin(16, 2); // start the library
- //lcd.setCursor(0,0);
- Serial.begin(9600);
- Serial.println("\n[memCheck]");
- Serial.println(freeRam());
- //lcd.print("Push the buttons"); // print a simple message
- delay(500);
- }
- void loop()
- {
- //lcd.setCursor(9,1); // move cursor to second line "1" and 9 spaces over
- //lcd.print(millis()/1000); // display seconds elapsed since power-up
- //lcd.setCursor(0,1); // move to the begining of the second line
- //lcd_key = read_LCD_buttons(); // read the buttons
- switch (lcd_key) // depending on which button was pushed, we perform an action
- {
- case btnRIGHT:
- {
- //lcd.print("RIGHT ");
- break;
- }
- case btnLEFT:
- {
- //lcd.print("LEFT ");
- break;
- }
- case btnUP:
- {
- //lcd.print("UP ");
- break;
- }
- case btnDOWN:
- {
- //lcd.print("DOWN ");
- break;
- }
- case btnSELECT:
- {
- //lcd.print("SELECT");
- break;
- }
- case btnNONE:
- {
- //lcd.print("NONE ");
- break;
- }
- }//endof switch
- }//end of loop function
- // freeRam function credit:http://jeelabs.org/2011/05/22/atmega-memory-use/
- int freeRam () {
- extern int __heap_start, *__brkval;
- int v;
- return (int) &v - (__brkval == 0 ? (int) &__heap_start : (int) __brkval);
- }
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