1: /*********************************************************
2: PIO (AT91SAM7S256)
3: *********************************************************/
4: #define PIOA_PER (*(volatile unsigned int *)0xFFFFF400)
5: #define PIOA_OER (*(volatile unsigned int *)0xFFFFF410)
6: #define PIOA_PPUDR (*(volatile unsigned int *)0xFFFFF460)
7: #define PIOA_CODR (*(volatile unsigned int *)0xFFFFF434)
8: #define PIOA_SODR (*(volatile unsigned int *)0xFFFFF430)
9:
10: /*********************************************************
11: 16 * 2line CLCD
12: *********************************************************/
13: //7월 13일 추가
14: #define CLCD_RS (1 << 8)
15: #define CLCD_RW (1 << 9)
16: #define CLCD_EN (1 << 10)
17: #define CLCD_BS (0xFF << 16)
18: //7월 14일 추가
19: #define CLCD_INST_CD (0x01 << 16) //Clear Display명령
20: #define CLCD_INST_RH (0x02 << 16) //Return Home명령
21: #define CLCD_INST_FS (0x38 << 16) //Function Set명령
22: #define CLCD_INST_EM (0x06 << 16) //Entry Mode Set명령
23: #define CLCD_INST_DO (0x0F << 16) //Display ON/OFF Control명령
24: #define CLCD_INST_CS (0x14 << 16) //Cursor Shift명령 - 커서를 right
25: #define CLCD_INST_DD (0x80 << 16) //DDRAM 0번지선택.
26: #define CLCD_DELAY(Z) for(iCount = 0 ; (Z) > iCount ;++iCount) //시간지연
27: #define LED (1 << 0)
28:
29: void LCD_INIT(void);
30: void LCD_Inst(unsigned int); //LCD에 명령을 내리는 함수.
31: void LCD_Data(unsigned int uiInst); //LCD에 명령을 내리는 함수.
32:
33: int main(void)
34: {
35:
36: LCD_INIT();
37: LCD_Inst(CLCD_INST_FS);
38: LCD_Inst(CLCD_INST_EM);
39: LCD_Inst(CLCD_INST_CS);
40: LCD_Inst(CLCD_INST_DO);
41: LCD_Inst(CLCD_INST_CD);
42: LCD_Inst(CLCD_INST_DD); //첫행으로.
43: LCD_Inst(CLCD_INST_RH); //리턴홈.
44: LCD_Data('H'<<16);
45: LCD_Data('e'<<16);
46: LCD_Data('l'<<16);
47: LCD_Data('l'<<16);
48: LCD_Data('o'<<16);
49: LCD_Data(' '<<16);
50: LCD_Data('W'<<16);
51: LCD_Data('o'<<16);
52: LCD_Data('r'<<16);
53: LCD_Data('l'<<16);
54: LCD_Data('d'<<16);
55: LCD_Data('!'<<16);
56: LCD_Data('!'<<16);
57: LCD_Inst(0xC0 << 16); //다음 행.
58: LCD_Data('K'<<16);
59: LCD_Data('i'<<16);
60: LCD_Data('m'<<16);
61: LCD_Data(' '<<16);
62: LCD_Data('S'<<16);
63: LCD_Data('u'<<16);
64: LCD_Data(' '<<16);
65: LCD_Data('M'<<16);
66: LCD_Data('a'<<16);
67: LCD_Data('n'<<16);
68:
69:
70:
71:
72: while(1); //return되면 안됨. 돌아갈 곳이 없어. 집이 없어.
73:
74: return 0;
75: }
76:
77: void LCD_INIT(void)
78: {
79: // Configure the pin in output
80: PIOA_OER = CLCD_BS | CLCD_RS | CLCD_RW | CLCD_EN | LED;
81: // Set the PIO controller in PIO mode instead of peripheral mode
82: PIOA_PER = CLCD_BS | CLCD_RS | CLCD_RW | CLCD_EN | LED;
83: // Disable pull-up
84: PIOA_PPUDR = CLCD_BS | CLCD_RS | CLCD_RW | CLCD_EN | LED;
85: PIOA_CODR = 0xFF<<16;
86: }
87:
88:
89: //8월25일 추가...LCD관련함수제작.
90: void LCD_Inst(unsigned int uiInst) //LCD에 명령을 내리는 함수.
91: {
92: volatile static unsigned int iCount = 0; //unsigned가 더 fast
93:
94: PIOA_CODR = CLCD_EN; //CLCD 비활성
95: PIOA_CODR = CLCD_RS; //CLCD instruction resgister 선택
96: PIOA_CODR = CLCD_RW; //write모드
97: CLCD_DELAY(100000);
98:
99: PIOA_SODR = CLCD_EN; //CLCD 활성
100: CLCD_DELAY(100000);
101:
102: PIOA_SODR = uiInst; //데이터 버스에 명령 올림.
103: CLCD_DELAY(100000);
104:
105: PIOA_CODR = CLCD_EN; //CLCD 비활성
106: CLCD_DELAY(100000);
107: PIOA_CODR = 0xFF<<16; //databus 초기화 0x00
108:
109: return ;
110: }
111:
112: void LCD_Data(unsigned int uiInst) //LCD에 데이터를 보내는 함수.
113: {
114: volatile static unsigned int iCount = 0; //unsigned가 더 fast
115:
116: PIOA_CODR = CLCD_EN; //CLCD 비활성
117: PIOA_SODR = CLCD_RS; //CLCD data resgister 선택, 데이터버스의 내용이 화면에 출력됨.
118: PIOA_CODR = CLCD_RW; //write모드
119: CLCD_DELAY(100000);
120:
121: PIOA_SODR = CLCD_EN; //CLCD 활성
122: CLCD_DELAY(100000);
123:
124: PIOA_SODR = uiInst; //데이터 버스에 명령 올림.
125: CLCD_DELAY(100000);
126:
127: PIOA_CODR = CLCD_EN; //CLCD 비활성
128: CLCD_DELAY(100000);
129: PIOA_CODR = 0xFF<<16; //databus 초기화 0x00
130:
131: return ;
132: }
133:
