実際の動きはこの感じです。
全角ひらがなカタカナと半角カナの変換辞書は未完成なので(約7割ぐらい完成)、気をつけてください。あとは英語数字と日本語と混ぜて使うとエラーが出てしまいます。
コードは以下です:
#!/usr/loca/bin/python2.6
# -*- coding: utf_8 -*-
# Connects to HD44780 based LCD with Japanese support
# Author : Huang, Hao-Chih
# Site : http://ezzep.blogspot.com
#
# Original Code:
# HD44780 LCD Test Script for Raspberry Pi
# Author : Matt Hawkins
# Site : http://www.raspberrypi-spy.co.uk
#
The wiring for the LCD is as follows:
# 1 : GND
# 2 : 5V
# 3 : Contrast (0-5V)*
# 4 : RS (Register Select)
# 5 : R/W (Read Write) - GROUND THIS PIN
# 6 : Enable or Strobe
# 7 : Data Bit 0 - NOT USED
# 8 : Data Bit 1 - NOT USED
# 9 : Data Bit 2 - NOT USED
# 10: Data Bit 3 - NOT USED
# 11: Data Bit 4
# 12: Data Bit 5
# 13: Data Bit 6
# 14: Data Bit 7
# 15: LCD Backlight +5V**
# 16: LCD Backlight GND
#import
import RPi.GPIO as GPIO
import time
import re
# Define GPIO to LCD mapping
LCD_RS = 7
LCD_E = 8
LCD_D4 = 25
LCD_D5 = 24
LCD_D6 = 23
LCD_D7 = 18
# Define some device constants
LCD_WIDTH = 16 # Maximum characters per line
LCD_CHR = True
LCD_CMD = False
LCD_LINE_1 = 0x80 # LCD RAM address for the 1st line
LCD_LINE_2 = 0xC0 # LCD RAM address for the 2nd line
# Timing constants
E_PULSE = 0.00005
E_DELAY = 0.00005
# 半濁音辞書
handakuon= [
u'ぱ', u'ぴ', u'ぷ', u'ぺ', u'ぽ'
, u'パ', u'ピ', u'プ', u'ペ', u'ポ'
]
# 濁音辞書
dakuon = [
u'が', u'ぎ', u'ぐ', u'げ', u'ご'
, u'ざ', u'じ', u'ず', u'ぜ', u'ぞ'
, u'だ', u'ぢ', u'づ', u'で', u'ど'
, u'ば', u'び', u'ぶ', u'べ', u'ぼ'
, u'ガ', u'ギ', u'グ', u'ゲ', u'ゴ'
, u'ザ', u'ジ', u'ズ', u'ゼ', u'ゾ'
, u'ダ', u'ヂ', u'ヅ', u'デ', u'ド'
, u'バ', u'ビ', u'ブ', u'ベ', u'ボ'
]
## 全角ひらがなカタカナ⇒半角カナ辞書 ##
zen2han = { u'ア':0xB1, u'イ':0xB2, u'ウ':0xB3, u'エ':0xB4, u'オ':0xB5
, u'カ':0xB6, u'キ':0xB7, u'ク':0xB8, u'ケ':0xB9, u'コ':0xBA
, u'サ':0xBB, u'シ':0xBC, u'ス':0xBD, u'セ':0xBE, u'ソ':0xBF
, u'タ':0xC0, u'チ':0xC1, u'ツ':0xC2, u'テ':0xC3, u'ト':0xC4
, u'ナ':0xC5, u'ニ':0xC6, u'ヌ':0xC7, u'ネ':0xC8, u'ノ':0xC9
, u'ハ':0xCA, u'ヒ':0xCB, u'フ':0xCC, u'ヘ':0xCD, u'ホ':0xCE
, u'マ':0xCF, u'ミ':0xD0, u'ム':0xD1, u'メ':0xD2, u'モ':0xD3
, u'ヤ':0xD4, u'ユ':0xD5, u'ヨ':0xD6, u'゜':0xDF, u'゛':0xDE
, u'ラ':0xD7, u'リ':0xD8, u'ル':0xD9, u'レ':0xDA, u'ロ':0xDB
, u'ワ':0xDC, u'ン':0xDD, u'「':0xA2, u'」':0xA3, u'。':0xA1
, u'、':0xA4, u'・':0xA5, u'ァ':0xA7, u'ィ':0xA8, u'ゥ':0xA9
, u'ェ':0xAA, u'ォ':0xAB, u'ャ':0xAC, u'ュ':0xAD, u'ョ':0xAE
, u'ガ':0xB6, u'ギ':0xB7, u'グ':0xB8, u'ゲ':0xB9, u'ゴ':0xBA
, u'ザ':0xBB, u'ジ':0xBC, u'ズ':0xBD, u'ゼ':0xBE, u'ゾ':0xBF
, u'ダ':0xC0, u'ヂ':0xC1, u'ヅ':0xC2, u'デ':0xC3, u'ド':0xC4
, u'バ':0xCA, u'ビ':0xCB, u'ブ':0xCC, u'ベ':0xCD, u'ボ':0xCE
, u'パ':0xCA, u'ピ':0xCB, u'プ':0xCC, u'ペ':0xCD, u'ポ':0xCE
, u'ヴ':0xB3, u'ッ':0xAF
, u'ヲ':0xA6
, u'あ' :0xB1, u'い' :0xB2, u'う' :0xB3, u'え' :0xB4, u'お' :0xB5
, u'か' :0xB6, u'き' :0xB7, u'く' :0xB8, u'け' :0xB9, u'こ' :0xBA
, u'さ' :0xBB, u'し' :0xBC, u'す' :0xBD, u'せ' :0xBE, u'そ' :0xBF
, u'た' :0xC0, u'ち' :0xC1, u'つ' :0xC2, u'て' :0xC3, u'と' :0xC4
, u'な' :0xC5, u'に' :0xC6, u'ぬ' :0xC7, u'ね' :0xC8, u'の' :0xC9
, u'は' :0xCA, u'ひ' :0xCB, u'ふ' :0xCC, u'へ' :0xCD, u'ほ' :0xCE
, u'ま' :0xCF, u'み' :0xD0, u'む' :0xD1, u'め' :0xD2, u'も' :0xD3
, u'や' :0xD4, u'ゆ' :0xD5, u'よ' :0xD6, u'゜' :0xDF, u'゛' :0xDE
, u'ら' :0xD7, u'り' :0xD8, u'る' :0xD9, u'れ' :0xDA, u'ろ' :0xDB
, u'わ' :0xDC, u'ん' :0xDD, u'っ' :0xAF, u' ' :0xA0
, u'、' :0xA4, u'・' :0xA5, u'ぁ' :0xA7, u'ぃ' :0xA8, u'ぅ' :0xA9
, u'ぇ' :0xAA, u'ぉ' :0xAB, u'ゃ' :0xAC, u'ゅ' :0xAD, u'ょ' :0xAE
, u'が' :0xB6, u'ぎ' :0xB7, u'ぐ' :0xB8, u'げ' :0xB9, u'ご' :0xBA
, u'ざ' :0xBB, u'じ' :0xBC, u'ず' :0xBD, u'ぜ': 0xBE, u'ぞ' :0xBF
, u'だ' :0xC0, u'ぢ' :0XC1, u'づ' :0xC2, u'で': 0xC3, u'ど' :0xC4
, u'ば': 0xCA, u'び': 0xCB, u'ぶ': 0xCC, u'べ': 0xCD, u'ぼ': 0xCE
, u'ぱ': 0xCA, u'ぴ': 0xCB, u'ぷ': 0xCC, u'ぺ': 0xCD, u'ぽ': 0xCE
, u'を': 0xA6 ,u'ー': 0xB0}
# 半角カナを表示
def lcd_kana(s):
# 二行全部使用ので、一行目から表示
lcd_byte(LCD_LINE_1, LCD_CMD)
CPOSX=0
CPOSY=0
conv_dic={}
conv_dic = zen2han
## 処理用の文字列を作成 ##
o = u'%s' % (unicode(s,'utf_8'))
## 処理用文字列で1文字ずつ処理 ##
z = p = u'' # 処理用文字列の初期化
for h in o: # 1文字ずつ
# ひらがなとカタカナを全部半角カナに変換し、表示する
if h in conv_dic:
lcd_byte(conv_dic[h] ,LCD_CHR)
CPOSX=CPOSX+1
if CPOSX>=16:
if CPOSY==0:
lcd_byte(LCD_LINE_2,LCD_CMD)
CPOSY=1
CPOSX=0
else:
lcd_byte(LCD_LINE_1,LCD_CMD)
CPOSY=0
CPOSX=0
# 半濁音の処理
if h in handakuon:
lcd_byte(0xDF,LCD_CHR)
CPOSX=CPOSX+1
if CPOSX>=16:
if CPOSY==0:
lcd_byte(LCD_LINE_2,LCD_CMD)
CPOSY=1
CPOSX=0
else:
lcd_byte(LCD_LINE_1,LCD_CMD)
CPOSY=0
CPOSX=0
# 濁音の処理
if h in dakuon:
lcd_byte(0xDE,LCD_CHR)
CPOSX=CPOSX+1
if CPOSX>=16:
if CPOSY==0:
lcd_byte(LCD_LINE_2,LCD_CMD)
CPOSY=1
CPOSX=0
else:
lcd_byte(LCD_LINE_1,LCD_CMD)
CPOSY=0
CPOSX=0
def main():
# Main program block
GPIO.setmode(GPIO.BCM) # Use BCM GPIO numbers
GPIO.setup(LCD_E, GPIO.OUT) # E
GPIO.setup(LCD_RS, GPIO.OUT) # RS
GPIO.setup(LCD_D4, GPIO.OUT) # DB4
GPIO.setup(LCD_D5, GPIO.OUT) # DB5
GPIO.setup(LCD_D6, GPIO.OUT) # DB6
GPIO.setup(LCD_D7, GPIO.OUT) # DB7
# Initialise display
lcd_init()
while 1:
my_input = raw_input(">")
lcd_byte(0x01,LCD_CMD)
# Send some test
lcd_kana(my_input)
def lcd_init():
# Initialise display
lcd_byte(0x33,LCD_CMD)
lcd_byte(0x32,LCD_CMD)
lcd_byte(0x28,LCD_CMD)
lcd_byte(0x0C,LCD_CMD)
lcd_byte(0x06,LCD_CMD)
lcd_byte(0x01,LCD_CMD)
def lcd_string(message):
# Send string to display
message = message.ljust(LCD_WIDTH," ")
for i in range(LCD_WIDTH):
lcd_byte(ord(message[i]),LCD_CHR)
def lcd_byte(bits, mode):
# Send byte to data pins
# bits = data
# mode = True for character
# False for command
GPIO.output(LCD_RS, mode) # RS
# High bits
GPIO.output(LCD_D4, False)
GPIO.output(LCD_D5, False)
GPIO.output(LCD_D6, False)
GPIO.output(LCD_D7, False)
if bits&0x10==0x10:
GPIO.output(LCD_D4, True)
if bits&0x20==0x20:
GPIO.output(LCD_D5, True)
if bits&0x40==0x40:
GPIO.output(LCD_D6, True)
if bits&0x80==0x80:
GPIO.output(LCD_D7, True)
# Toggle 'Enable' pin
time.sleep(E_DELAY)
GPIO.output(LCD_E, True)
time.sleep(E_PULSE)
GPIO.output(LCD_E, False)
time.sleep(E_DELAY)
# Low bits
GPIO.output(LCD_D4, False)
GPIO.output(LCD_D5, False)
GPIO.output(LCD_D6, False)
GPIO.output(LCD_D7, False)
if bits&0x01==0x01:
GPIO.output(LCD_D4, True)
if bits&0x02==0x02:
GPIO.output(LCD_D5, True)
if bits&0x04==0x04:
GPIO.output(LCD_D6, True)
if bits&0x08==0x08:
GPIO.output(LCD_D7, True)
# Toggle 'Enable' pin
time.sleep(E_DELAY)
GPIO.output(LCD_E, True)
time.sleep(E_PULSE)
GPIO.output(LCD_E, False)
time.sleep(E_DELAY)
if __name__ == '__main__':
main() ]]>
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