s t / CharLcd4bit

1602 キャラクタディスプレイ データ4bit接続用ライブラリ STM32F103RB CUCLEOボードを想定

Dependents:   CharacterLCD

CharLcd4bit.cpp@0:0e84781e64cf, 2017-10-06 (annotated)

Committer:
tshl
Date:
Fri Oct 06 05:01:05 2017 +0000
Revision:
0:0e84781e64cf
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Who changed what in which revision?

UserRevisionLine numberNew contents of line
tshl 0:0e84781e64cf 1 #include "CharLcd4bit.h"
tshl 0:0e84781e64cf 2
tshl 0:0e84781e64cf 3 #define WAIT_E() wait_ms(1)
tshl 0:0e84781e64cf 4 #define CHAR_MAX_PER_LINE 16
tshl 0:0e84781e64cf 5 #define LINE_MAX 2
tshl 0:0e84781e64cf 6
tshl 0:0e84781e64cf 7 /* コンストラクタ */
tshl 0:0e84781e64cf 8 CharLcd4bit::CharLcd4bit(
tshl 0:0e84781e64cf 9 PinName rs,
tshl 0:0e84781e64cf 10 PinName rw,
tshl 0:0e84781e64cf 11 PinName e,
tshl 0:0e84781e64cf 12 PinName db4,
tshl 0:0e84781e64cf 13 PinName db5,
tshl 0:0e84781e64cf 14 PinName db6,
tshl 0:0e84781e64cf 15 PinName db7) :
tshl 0:0e84781e64cf 16 RS(rs),
tshl 0:0e84781e64cf 17 RW(rw),
tshl 0:0e84781e64cf 18 E(e),
tshl 0:0e84781e64cf 19 DB4(db4),
tshl 0:0e84781e64cf 20 DB5(db5),
tshl 0:0e84781e64cf 21 DB6(db6),
tshl 0:0e84781e64cf 22 DB7(db7)
tshl 0:0e84781e64cf 23 {
tshl 0:0e84781e64cf 24
tshl 0:0e84781e64cf 25 }
tshl 0:0e84781e64cf 26
tshl 0:0e84781e64cf 27 /* LCD初期化 */
tshl 0:0e84781e64cf 28 void CharLcd4bit::Initialize(void)
tshl 0:0e84781e64cf 29 {
tshl 0:0e84781e64cf 30 lcd8(0x03, false);//8bit mode
tshl 0:0e84781e64cf 31 lcd8(0x03, false);//8bit mode
tshl 0:0e84781e64cf 32 lcd8(0x03, false);//8bit mode
tshl 0:0e84781e64cf 33 lcd8(0x02, false);//4bit mode
tshl 0:0e84781e64cf 34 lcd4(0x08);//２行表示モード
tshl 0:0e84781e64cf 35 lcd4(0x0c);//表示設定
tshl 0:0e84781e64cf 36 lcd4(0x06);//entry mode
tshl 0:0e84781e64cf 37 lcd4(0x01);//clear
tshl 0:0e84781e64cf 38 }
tshl 0:0e84781e64cf 39
tshl 0:0e84781e64cf 40 /* 1行出力 */
tshl 0:0e84781e64cf 41 void CharLcd4bit::WriteLine(int line, char *str)
tshl 0:0e84781e64cf 42 {
tshl 0:0e84781e64cf 43 char *ad=0;
tshl 0:0e84781e64cf 44
tshl 0:0e84781e64cf 45 // 文字位置指定
tshl 0:0e84781e64cf 46 SetPosition(line, 0);
tshl 0:0e84781e64cf 47
tshl 0:0e84781e64cf 48 ad = str;
tshl 0:0e84781e64cf 49 for(int i = 0; i < CHAR_MAX_PER_LINE; i++)
tshl 0:0e84781e64cf 50 {
tshl 0:0e84781e64cf 51 if(*ad)
tshl 0:0e84781e64cf 52 {
tshl 0:0e84781e64cf 53 WriteChar(*ad);
tshl 0:0e84781e64cf 54 ad++;
tshl 0:0e84781e64cf 55 }
tshl 0:0e84781e64cf 56 else
tshl 0:0e84781e64cf 57 {
tshl 0:0e84781e64cf 58 // 文字数が足りない時は空白で埋める
tshl 0:0e84781e64cf 59 WriteChar(' ');
tshl 0:0e84781e64cf 60 }
tshl 0:0e84781e64cf 61 }
tshl 0:0e84781e64cf 62 }
tshl 0:0e84781e64cf 63
tshl 0:0e84781e64cf 64 /* 1行出力 */
tshl 0:0e84781e64cf 65 void CharLcd4bit::WriteStr(char *str)
tshl 0:0e84781e64cf 66 {
tshl 0:0e84781e64cf 67 char *ad=0;
tshl 0:0e84781e64cf 68
tshl 0:0e84781e64cf 69 ad = str;
tshl 0:0e84781e64cf 70 while(*ad)
tshl 0:0e84781e64cf 71 {
tshl 0:0e84781e64cf 72 WriteChar(*ad);
tshl 0:0e84781e64cf 73 ad++;
tshl 0:0e84781e64cf 74 }
tshl 0:0e84781e64cf 75 }
tshl 0:0e84781e64cf 76
tshl 0:0e84781e64cf 77 /* 1文字出力 */
tshl 0:0e84781e64cf 78 void CharLcd4bit::WriteChar(char c)
tshl 0:0e84781e64cf 79 {
tshl 0:0e84781e64cf 80 lcd8(c >> 4, true);
tshl 0:0e84781e64cf 81 lcd8(c, true);
tshl 0:0e84781e64cf 82 }
tshl 0:0e84781e64cf 83
tshl 0:0e84781e64cf 84 /* 文字位置指定 */
tshl 0:0e84781e64cf 85 void CharLcd4bit::SetPosition(int line, int position)
tshl 0:0e84781e64cf 86 {
tshl 0:0e84781e64cf 87 if(line==1)
tshl 0:0e84781e64cf 88 lcd4(0x80 + position); /*1行目*/
tshl 0:0e84781e64cf 89 else if(line==2)
tshl 0:0e84781e64cf 90 lcd4(0xc0 + position); /*2行目*/
tshl 0:0e84781e64cf 91 }
tshl 0:0e84781e64cf 92
tshl 0:0e84781e64cf 93 void CharLcd4bit::Clear()
tshl 0:0e84781e64cf 94 {
tshl 0:0e84781e64cf 95 lcd4(0x01);
tshl 0:0e84781e64cf 96 }
tshl 0:0e84781e64cf 97
tshl 0:0e84781e64cf 98 /* 8bitモード出力 -> 4bit接続に変換して出力 */
tshl 0:0e84781e64cf 99 void CharLcd4bit::lcd8(char c, bool isData)
tshl 0:0e84781e64cf 100 {
tshl 0:0e84781e64cf 101 char temp = c;
tshl 0:0e84781e64cf 102
tshl 0:0e84781e64cf 103 DB4 = temp & 0x01;
tshl 0:0e84781e64cf 104 temp = temp >> 1;
tshl 0:0e84781e64cf 105
tshl 0:0e84781e64cf 106 DB5 = temp & 0x01;
tshl 0:0e84781e64cf 107 temp = temp >> 1;
tshl 0:0e84781e64cf 108
tshl 0:0e84781e64cf 109 DB6 = temp & 0x01;
tshl 0:0e84781e64cf 110 temp = temp >> 1;
tshl 0:0e84781e64cf 111
tshl 0:0e84781e64cf 112 DB7 = temp & 0x01;
tshl 0:0e84781e64cf 113
tshl 0:0e84781e64cf 114 if(isData) RS = 1;
tshl 0:0e84781e64cf 115 E=1;
tshl 0:0e84781e64cf 116 WAIT_E();
tshl 0:0e84781e64cf 117 E=0;
tshl 0:0e84781e64cf 118 if(isData) RS = 0;
tshl 0:0e84781e64cf 119 WAIT_E();
tshl 0:0e84781e64cf 120 }
tshl 0:0e84781e64cf 121
tshl 0:0e84781e64cf 122 /* 4bitモード出力 */
tshl 0:0e84781e64cf 123 void CharLcd4bit::lcd4(char data)
tshl 0:0e84781e64cf 124 {
tshl 0:0e84781e64cf 125 lcd8(data >> 4, false);
tshl 0:0e84781e64cf 126 lcd8(data, false);
tshl 0:0e84781e64cf 127 }