(SKU:RB-05L007)LCD4884液晶搖桿擴展板

產(chǎn)品概述

最新推出的LCD4884 LCD Joystick Shield v2.0 LCD4884液晶屏擴展板是哈爾濱奧松機器人科技有限公司研發(fā)的一款黑白屏液晶擴展板。此擴展板采用Nokia 5110液晶屏為顯示器件。SPI接口，最大限度的節(jié)省I/O資源。特別添加五向搖桿，方便實現(xiàn)搭建人機互動接口，剩余的模擬與數(shù)字接口全部用插針引出，便于安裝其它傳感器與模塊。本品適用于各種開發(fā)板和控制器，例如：Arduino控制器、STC單片機、AVR單片機等。

規(guī)格參數(shù)

產(chǎn)品名稱：LCD4884液晶搖桿擴展板
產(chǎn)品貨號：RB-05L007
工作電壓：DC5V
產(chǎn)品類型：Arduino擴展板
制作工藝：FR4雙面噴錫
人性化設(shè)計：具有可人機互動接口“五項搖桿”
工作溫度：10℃-30℃
重量：28g
產(chǎn)品尺寸：69.47mm x 53.34mm x 18mm
發(fā)貨清單：LCD4884液晶搖桿擴展板×1
包裝方式：靜電袋密封
選配配件：3PIN傳感器連接線、Arduino 328控制器等
板載資源：

數(shù)字接口：8個
模擬輸入借口：5個
48×84液晶：1個
無向搖桿按鍵：1個
系統(tǒng)復(fù)位按鍵：1個

使用方法

使用硬件

Carduino UNO 控制器 * 1個
LCD4884 Joystick Shield ×1
USB數(shù)據(jù)通信線×1

例子程序

程序上傳前需要先點此下載LCD4884 程序使用到的庫文件，將它放到Arduino安裝目錄下的libraries文件夾下

#include "LCD4884.h"
#include "Robotbase_bmp.h"
#include "Robotbase.h"
//keypad debounce parameter
#define DEBOUNCE_MAX 15
#define DEBOUNCE_ON  10
#define DEBOUNCE_OFF 3 
#define NUM_KEYS 5
#define NUM_MENU_ITEM	4
// joystick number
#define LEFT_KEY 0
#define CENTER_KEY 1
#define DOWN_KEY 2
#define RIGHT_KEY 3
#define UP_KEY 4
// menu starting points
#define MENU_X	10		// 0-83
#define MENU_Y	1		// 0-5
int analogPin = 1;
int ADC_result = 0;
char qian = 0,bai = 0,shi = 0,ge = 0;
int  adc_key_val[5] ={ 50, 200, 400, 600, 800 };
// debounce counters
byte button_count[NUM_KEYS];
// button status - pressed/released
byte button_status[NUM_KEYS];
// button on flags for user program 
byte button_flag[NUM_KEYS];

// menu definition
char menu_items[NUM_MENU_ITEM][12]={
  "Temperature",
  " Char Map  ",
  "  Picture  ",
  "   About   "	
};
void (*menu_funcs[NUM_MENU_ITEM])(void) = {
  temperature,
  charmap,
  bitmap,
  about
};
char current_menu_item;
void setup()
{
  // setup interrupt-driven keypad arrays  
  // reset button arrays
  for(byte i=0; i<NUM_KEYS; i++){
    button_count[i]=0;
    button_status[i]=0;
    button_flag[i]=0;
  }
  // Setup timer2 -- Prescaler/256
  TCCR2A &= ~((1<<WGM21) | (1<<WGM20));
  TCCR2B &= ~(1<<WGM22);
  TCCR2B = (1<<CS22)|(1<<CS21);      
  ASSR |=(0<<AS2);
  // Use normal mode  
  TCCR2A =0;    
  //Timer2 Overflow Interrupt Enable  
  TIMSK2 |= (0<<OCIE2A);
  TCNT2=0x6;  // counting starts from 6;  
  TIMSK2 = (1<<TOIE2);    
  SREG|=1<<SREG_I;
  lcd.LCD_init();
  lcd.LCD_clear();
  //menu initialization
  init_MENU();
  current_menu_item = 0;	
  lcd.backlight(ON);//Turn on the backlight
  //lcd.backlight(OFF); // Turn off the backlight  
}
/* loop */
void loop()
{
  byte i;
  for(i=0; i<NUM_KEYS; i++){
    if(button_flag[i] !=0){
      button_flag[i]=0;  // reset button flag
      switch(i){
      case UP_KEY:
        // current item to normal display
        lcd.LCD_write_string(MENU_X, MENU_Y + current_menu_item, menu_items[current_menu_item], MENU_NORMAL );
        current_menu_item -=1;
        if(current_menu_item <0)  current_menu_item = NUM_MENU_ITEM -1;
        // next item to highlight display
        lcd.LCD_write_string(MENU_X, MENU_Y + current_menu_item, menu_items[current_menu_item], MENU_HIGHLIGHT );
        break;
      case DOWN_KEY:
        // current item to normal display
        lcd.LCD_write_string(MENU_X, MENU_Y + current_menu_item, menu_items[current_menu_item], MENU_NORMAL );
        current_menu_item +=1;
        if(current_menu_item >(NUM_MENU_ITEM-1))  current_menu_item = 0;
        // next item to highlight display
        lcd.LCD_write_string(MENU_X, MENU_Y + current_menu_item, menu_items[current_menu_item], MENU_HIGHLIGHT );
        break;
      case LEFT_KEY:
        init_MENU();
        current_menu_item = 0;
        break;   
      case CENTER_KEY:
        lcd.LCD_clear();
        (*menu_funcs[current_menu_item])();
        lcd.LCD_clear();
        init_MENU();
        current_menu_item = 0;           
        break;	
      }
    }
  }
}
/* menu functions */
void init_MENU(void){
  byte i;
  lcd.LCD_clear();
  lcd.LCD_write_string(MENU_X, MENU_Y, menu_items[0], MENU_HIGHLIGHT );
  for (i=1; i<NUM_MENU_ITEM; i++){
    lcd.LCD_write_string(MENU_X, MENU_Y+i, menu_items[i], MENU_NORMAL);
  }
}
// waiting for center key press
void waitfor_OKkey(){
  byte i;
  byte key = 0xFF;
  while (key!= CENTER_KEY){
    for(i=0; i<NUM_KEYS; i++){
      if(button_flag[i] !=0){
        button_flag[i]=0;  // reset button flag
        if(i== CENTER_KEY) key=CENTER_KEY;
      }
    }
  }
}
void temperature()
{
  byte i;
  byte key = 0xFF;
  while (key!= CENTER_KEY){
    ADC_result = analogRead(analogPin);
    qian = ADC_result / 1000;
    bai = ADC_result % 1000 / 100;
    shi = ADC_result % 1000 % 100 / 10;
    ge = ADC_result % 10;
    lcd.LCD_write_char_big(10, 1, '+', MENU_NORMAL);
    lcd.LCD_write_char_big(22, 1, qian-48, MENU_NORMAL);
    lcd.LCD_write_char_big(35, 1, bai-48, MENU_NORMAL);
    lcd.LCD_write_char_big(48, 1, '.', MENU_NORMAL);
    lcd.LCD_write_char_big(51, 1, shi-48, MENU_NORMAL);
    lcd.LCD_write_char_big(64, 1, ge-48, MENU_NORMAL);
    lcd.LCD_write_string(78, 2, "C", MENU_NORMAL);
    lcd.LCD_write_string(36, 5, "OK", MENU_HIGHLIGHT );
    for(i=0; i<NUM_KEYS; i++){
      if(button_flag[i] !=0){
        button_flag[i]=0;  // reset button flag
        if(i== CENTER_KEY) key=CENTER_KEY;
      }
    }
  }
}
void charmap(){
  char i,j;
  for(i=0; i<5; i++){
    for(j=0; j<14; j++){
      lcd.LCD_set_XY(j*6,i);
      lcd.LCD_write_char(i*14+j+32, MENU_NORMAL);
    }
  }
  lcd.LCD_write_string(36, 5, "OK", MENU_HIGHLIGHT );
  waitfor_OKkey();   
}
void bitmap(){
  lcd.LCD_draw_bmp_pixel(0,0, Robotbase_bmp, 84,24);
  lcd.LCD_write_chinese(12,3, Robotbase_chinese,12,5,0,0);
  lcd.LCD_write_string(36, 5, "OK", MENU_HIGHLIGHT );
  waitfor_OKkey();
}
void about(){
  lcd.LCD_write_string( 0, 0, "LCD4884 Shield", MENU_NORMAL);
  lcd.LCD_write_string( 32, 1, "www", MENU_NORMAL);
  lcd.LCD_write_string( 10, 2, ".robotbase.", MENU_NORMAL);
  lcd.LCD_write_string( 35, 3, "cn", MENU_NORMAL);
  lcd.LCD_write_string(36, 5, "OK", MENU_HIGHLIGHT );
  waitfor_OKkey();
}
// The followinging are interrupt-driven keypad reading functions
// which includes DEBOUNCE ON/OFF mechanism, and continuous pressing detection
// Convert ADC value to key number
char get_key(unsigned int input)
{
  char k;
  for (k = 0; k < NUM_KEYS; k++)
  {
    if (input < adc_key_val[k])
    {
      return k;
    }
  }
  if (k >= NUM_KEYS)
    k = -1;     // No valid key pressed
  return k;
}
void update_adc_key(){
  int adc_key_in;
  char key_in;
  byte i;
  adc_key_in = analogRead(0);
  key_in = get_key(adc_key_in);
  for(i=0; i<NUM_KEYS; i++)
  {
    if(key_in==i)  //one key is pressed 
    { 
      if(button_count[i]<DEBOUNCE_MAX)
      {
        button_count[i]++;
        if(button_count[i]>DEBOUNCE_ON)
        {
          if(button_status[i] == 0)
          {
            button_flag[i] = 1;
            button_status[i] = 1; //button debounced to 'pressed' status
          }
        }
      }
    }
    else // no button pressed
    {
      if (button_count[i] >0)
      {  
        button_flag[i] = 0;	
        button_count[i]--;
        if(button_count[i]<DEBOUNCE_OFF){
          button_status[i]=0;   //button debounced to 'released' status
        }
      }
    }
  }
}
// Timer2 interrupt routine -
// 1/(160000000/256/(256-6)) = 4ms interval

ISR(TIMER2_OVF_vect) {  
  TCNT2  = 6;
  update_adc_key();
}