(SKU:RB-05L007)LCD4884液晶摇杆扩展板

产品概述

最新推出的LCD4884 LCD Joystick Shield v2.0 LCD4884液晶屏扩展板是哈尔滨奥松机器人科技有限公司研发的一款黑白屏液晶扩展板。此扩展板采用Nokia 5110液晶屏为显示器件。SPI接口，最大限度的节省I/O资源。特别添加五向摇杆，方便实现搭建人机互动接口，剩余的模拟与数字接口全部用插针引出，便于安装其它传感器与模块。本品适用于各种开发板和控制器，例如：Arduino控制器、STC单片机、AVR单片机等。

规格参数

产品名称：LCD4884液晶摇杆扩展板
产品货号：RB-05L007
工作电压：DC5V
产品类型：Arduino扩展板
制作工艺：FR4双面喷锡
人性化设计：具有可人机互动接口“五项摇杆”
工作温度：10℃-30℃
重量：28g
产品尺寸：69.47mm x 53.34mm x 18mm
发货清单：LCD4884液晶摇杆扩展板×1
包装方式：静电袋密封
选配配件：3PIN传感器连接线、Arduino 328控制器等
板载资源：

数字接口：8个
模拟输入借口：5个
48×84液晶：1个
无向摇杆按键：1个
系统复位按键：1个

使用方法

使用硬件

Carduino UNO 控制器 * 1个
LCD4884 Joystick Shield ×1
USB数据通信线×1

例子程序

程序上传前需要先点此下载LCD4884 程序使用到的库文件，将它放到Arduino安装目录下的libraries文件夹下.
注意：LCD4884液晶显示模块不能与1.6以上版本的IDE兼容，需要使用老版本的IDE进行编译，例如：1.0.4、1.0.5
老版本IDE下载地址：http://www.arduino.cc/en/Main/OldSoftwareReleases

#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();
}