晌 Arduino 上用 LCD Smartie (附 code / 圖)

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2^#

發表於 2009-5-15 16:17 | 只看該作者

Code 如下

#include <avr/interrupt.h>
#include <avr/io.h>
#include "LCD4Bit_mod.h"

#define DEBOUNCE_MAX 17 // max value for debounce count
#define DEBOUNCE_ON 12 // debounce pressed threshold 12x4ms = 48ms
#define DEBOUNCE_OFF 2  // debounce released threshold 8ms

//create object to control an LCD.
//number of lines in display=1
LCD4Bit_mod lcd = LCD4Bit_mod(2);

int  adc_key_val[5] ={30, 150, 360, 535, 760 };
byte NUM_KEYS = 5;
char key=-1;
char oldkey=-1;

// debounce counters
byte button_count[5];
// button status - pressed/released
byte button_status[5];
// button on flags
byte button_flag[5];

// Timer2 interrupt routine -
// 1/(160000000/256/(256-6)) = 4ms interval

ISR(TIMER2_OVF_vect) {


  TCNT2  = 6;
  update_adc_key();
}

// 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<DEBOUNCE_MAX)
   {
      button_count++;
      if(button_count>DEBOUNCE_ON)
      {
      if(button_status == 0)
      {
         button_flag = 1; // pressed state flag ON
         button_status = 1; //button debounced to 'pressed' status
      }
      }
   }
}
else // no button pressed
{
   if (button_count >0)
   {
      button_count--;
      if(button_count<DEBOUNCE_OFF){
      button_status=0; //button debounced to 'released' status
      }
   }
}

   // output button pressed state
  if(button_flag==1)
  {
button_flag=0;    // clear flag to avoid repeats
Serial.print('A'+i,BYTE); // output MO button code

  }
  }


}



void setup() {
  pinMode(13, OUTPUT);  //we'll use the debug LED to output a heartbeat
  digitalWrite(13,LOW);
  Serial.begin(19200);

  // reset button arrays
for(byte i=0; i<5; i++){
   button_count=0;
   button_status=0;
   button_flag=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.init();
lcd.clear();
  lcd.printIn("**LCD  SMARTIE**");
  lcd.cursorTo(2,3);
  lcd.printIn("on Arduino");
}

byte serial_getch(){

  int incoming;
  while (Serial.available()==0){}
// read the incoming byte:
  incoming = Serial.read();

  return (byte) (incoming &0xff);
}


void loop(){

  byte rxbyte;
  byte temp;

  rxbyte = serial_getch();

  if (rxbyte == 254) //Matrix Orbital uses 254 prefix for commands
{
switch (serial_getch())
{
case 66: //backlight on (at previously set brightness)
                              // not implemented

break;
case 70: //backlight off
// not implemented
                              break;
case 71:  //set cursor position
temp = (serial_getch() - 1);  //get column byte
switch (serial_getch())  //get row byte
{
//line 1 is already set up
case 2:
temp += 0x40;
break;
case 3:
temp += 0x14;
break;
case 4:
temp += 0x54;
break;
default:
break;
}
lcd.commandWrite(0b10000000 + temp);
break;
case 72:  //cursor home (reset display position)
lcd.commandWrite(2);
break;
case 74:  //show underline cursor
lcd.commandWrite(0b00001110);
break;
case 75:  //underline cursor off
case 84:  //block cursor off
lcd.commandWrite(0b00001100);
break;
case 76:  //move cursor left
lcd.commandWrite(16);
break;
case 77:  //move cursor right
lcd.commandWrite(20);
break;
case 78:  //define custom char
lcd.commandWrite(64 + (serial_getch() * 8));  //get+set char address
for (temp = 7; temp != 0; temp--)
{
lcd.print(serial_getch()); //get each pattern byte
}
break;
case 83:  //show blinking block cursor
lcd.commandWrite(0b00001111);
break;
case 86:  //GPO OFF
//implement later
break;
case 87:  //GPO ON
/*temp = serial_getch();
if (temp == 1)
{
GPO1 = GPO_ON;
}*/
break;
case 88:  //clear display, cursor home
lcd.commandWrite(1);
break;
case 152: //set and remember (doesn't save value, though)
case 153: //set backlight brightness
//not implemented
break;

//these commands ignored (no parameters)
case 35: //read serial number
case 36: //read version number
case 55: //read module type
case 59: //exit flow-control mode
case 65: //auto transmit keypresses
case 96: //auto-repeat mode off (keypad)
case 67: //auto line-wrap on
case 68: //auto line-wrap off
case 81: //auto scroll on
case 82: //auto scroll off
case 104: //init horiz bar graph
case 109: //init med size digits
case 115: //init narrow vert bar graph
case 118: //init wide vert bar graph
break;
default:
//all other commands ignored and parameter byte discarded
temp = serial_getch();  //dump the command code
break;
}
return;
} //END OF COMMAND HANDLER

//change accented char to plain, detect and change descenders
//NB descenders only work on 5x10 displays. This lookup table works
//  with my DEM-20845 (Display Elektronik GmbH) LCD using KS0066 chip.
switch (rxbyte)
{
//chars that have direct equivalent in LCD charmap
/* case 0x67: //g
rxbyte = 0xE7;
break;
case 0x6A: //j
rxbyte = 0xEA;
break;
case 0x70: //p
rxbyte = 0xF0;
break;
case 0x71: //q
rxbyte = 0xF1;
break;
case 0x79: //y
rxbyte = 0xF9;
break;
*/ case 0xE4: //ASCII "a" umlaut
rxbyte = 0xE1;
break;
case 0xF1: //ASCII "n" tilde
rxbyte = 0xEE;
break;
case 0xF6: //ASCII "o" umlaut
rxbyte = 0xEF; //was wrong in v0.86
break;
case 0xFC: //ASCII "u" umlaut
rxbyte = 0xF5;
break;

//accented -> plain equivalent
//and misc symbol translation
case 0xA3: //sterling (pounds)
rxbyte = 0xED;
break;
/* case 0xB0: //degrees symbol
rxbyte = 0xDF;
break;
*/ case 0xB5: //mu
rxbyte = 0xE4;
break;
case 0xC0: //"A" variants
case 0xC1:
case 0xC2:
case 0xC3:
case 0xC4:
case 0xC5:
rxbyte = 0x41;
break;
case 0xC8: //"E" variants
case 0xC9:
case 0xCA:
case 0xCB:
rxbyte = 0x45;
break;
case 0xCC: //"I" variants
case 0xCD:
case 0xCE:
case 0xCF:
rxbyte = 0x49;
break;
case 0xD1: //"N" tilde -> plain "N"
rxbyte = 0x43;
break;
case 0xD2: //"O" variants
case 0xD3:
case 0xD4:
case 0xD5:
case 0xD6:
case 0xD8:
rxbyte = 0x4F;
break;
case 0xD9: //"U" variants
case 0xDA:
case 0xDB:
case 0xDC:
rxbyte = 0x55;
break;
case 0xDD: //"Y" acute -> "Y"
rxbyte = 0x59;
break;
/* case 0xDF: //beta  //mucks up LCDSmartie's degree symbol??
rxbyte = 0xE2;
break;
*/ case 0xE0: //"a" variants except umlaut
case 0xE1:
case 0xE2:
case 0xE3:
case 0xE5:
rxbyte = 0x61;
break;
case 0xE7: //"c" cedilla -> "c"
rxbyte = 0x63;
break;
case 0xE8: //"e" variants
case 0xE9:
case 0xEA:
case 0xEB:
rxbyte = 0x65;
break;
case 0xEC: //"i" variants
case 0xED:
case 0xEE:
case 0xEF:
rxbyte = 0x69;
break;
case 0xF2: //"o" variants except umlaut
case 0xF3:
case 0xF4:
case 0xF5:
case 0xF8:
rxbyte = 0x6F;
break;
case 0xF7: //division symbol
rxbyte = 0xFD;
break;
case 0xF9: //"u" variants except umlaut
case 0xFA:
case 0xFB:
rxbyte = 0x75;
break;
default:
break;
}

lcd.print(rxbyte);  //otherwise a plain char so we print it to lcd
return;

}

[ 本帖最後由 dulllou 於 2009-5-19 18:20 編輯 ]

Rank: 4 Rank: 4 Rank: 4 Rank: 4

3^#

發表於 2009-5-15 16:27 | 只看該作者

d制全部都可以用?

Rank: 3 Rank: 3 Rank: 3

4^#

發表於 2009-5-15 16:33 | 只看該作者

原帖由 薯餅v.v 於 2009-5-15 16:27 發表
d制全部都可以用?

未得

要用得o個幾粒制的話其實都唔係太難, 我估應該 20 行以內就寫到, 問題係既然晌 LCD Smartie 已經控制到所有 function... 其實都唔太必要再用o個五粒 buttons (第六粒係 reset...). 再者, 其實我都未摸索完 LCD Smartie, 唔太 sure 佢會唔會收 input / 點樣整到佢收 Arduino 的 input.... 加上我今日攪左成日...未食早餐又未食晏...都係要食完野返來先再摸索 / 改 code 會好d

Rank: 4 Rank: 4 Rank: 4 Rank: 4

5^#

發表於 2009-5-15 21:23 | 只看該作者

ching 加油

想玩下有key既lcd display~.~
成品好貴

Rank: 3 Rank: 3 Rank: 3

6^#

發表於 2009-5-15 23:53 | 只看該作者

哈哈, 攪掂左

加返個menu plugin 就可以~

[ 本帖最後由 dulllou 於 2009-5-15 23:55 編輯 ]

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7^#

發表於 2009-5-16 07:53 | 只看該作者

咁樓主如果自己砌一舊要買d咩

Rank: 3 Rank: 3 Rank: 3

8^#

發表於 2009-5-16 08:34 | 只看該作者

砌一隻 full function o既 arduino 睇呢度
http://itp.nyu.edu/physcomp/Tutorials/ArduinoBreadboard

如果淨係打算用來做 LCD display o既用 atmega8 就夠

另外如果你部電腦已經冇 Serial port (com port), 加多粒 FT232 來做 USB -> Serial. 將 FT232 的 RX 同 TX 分別駁入 atmeta8 o既 pin2 (rx) 同 pin3 (tx) 就可以

最後當然仲要買件 LCD.... 淘寶網六蚊件 2*16...

[ 本帖最後由 dulllou 於 2009-5-16 08:35 編輯 ]

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Rank: 4 Rank: 4 Rank: 4 Rank: 4

9^#

發表於 2009-5-16 10:42 | 只看該作者

咁d制可以連去邊

Rank: 3 Rank: 3 Rank: 3

10^#

發表於 2009-5-16 10:47 | 只看該作者

你睇返我份 code.
為左慳 pin, 我將五粒連晒去一個analog pin
每粒有一粒唔同 resistance o既 resistor, 然後用 analogRead() 去讀返個電壓就知道press 左邊個 button

唔想咁麻煩亦都可以一粒 button 連去一個 pin
冇咩所謂

[ 本帖最後由 dulllou 於 2009-5-16 10:47 編輯 ]