?? lcd.lis
字號:
.module LCD.c
.area text(rom, con, rel)
0000 .dbfile D:\NEW\AVR_PWM\LCD.c
0000 .dbfunc e LCD_INIT _LCD_INIT fV
.even
0000 _LCD_INIT::
0000 .dbline -1
0000 .dbline 52
0000 ; // ************************************************
0000 ; // *** 采用4位數據線的1602液晶驅動程序 ***
0000 ; // *** LCD.C ***
0000 ; // ************************************************
0000 ; #define ENABLE_BIT_DEFINITIONS
0000 ; #define LCD_C
0000 ; #include "includes.h"
0000 ; // ***** Define I/O pins ***** //
0000 ; #define BIT7 0x80
0000 ; #define BIT6 0x40
0000 ; #define BIT5 0x20
0000 ; #define BIT4 0x10
0000 ; #define BIT3 0x08
0000 ; #define BIT2 0x04
0000 ; #define BIT1 0x02
0000 ; #define BIT0 0x01
0000 ; // *** Set port for LCD Data Bus 8 bit mode *** //
0000 ; #define LCD_OP_PORT PORTB
0000 ; #define LCD_IP_PORT PINB
0000 ; #define LCD_DIR_PORT DDRB
0000 ; // *** Set LCD Enable Port and Bit values *** //
0000 ; //#define LCD_EN LCD_OP_PORT.2
0000 ; // *** Set LCD Register Select Port and Bit values *** //
0000 ; //#define LCD_RS LCD_OP_PORT.0
0000 ; // *** Set LCD Read/Write Port and Bit values *** //
0000 ; //#define LCD_RW LCD_OP_PORT.1
0000 ; /****************************************************************/
0000 ;
0000 ; #define LCD_EN (1 << 2) //引腳定義
0000 ; #define LCD_RS (1 << 0)
0000 ; #define LCD_RW (1 << 1)
0000 ;
0000 ; #define lcd_set_e() (LCD_OP_PORT |= LCD_EN) //置位與清零
0000 ; #define lcd_set_rs() (LCD_OP_PORT |= LCD_RS)
0000 ; #define lcd_set_rw() (LCD_OP_PORT |= LCD_RW)
0000 ; #define lcd_clear_e() (LCD_OP_PORT &= ~LCD_EN)
0000 ; #define lcd_clear_rs() (LCD_OP_PORT &= ~LCD_RS)
0000 ; #define lcd_clear_rw() (LCD_OP_PORT &= ~LCD_RW)
0000 ; /****************************************************************/
0000 ;
0000 ; #define LCD_ON 0x0C
0000 ; #define LCD_CURS_ON 0x0D
0000 ; #define LCD_OFF 0x08
0000 ; #define LCD_HOME 0x02
0000 ; #define LCD_CLEAR 0x01
0000 ; #define LCD_NEW_LINE 0xC0
0000 ; #define LCD_FUNCTION_SET 0x28
0000 ; #define LCD_MODE_SET 0x06
0000 ;
0000 ;
0000 ; void LCD_INIT(void)
0000 ; {
0000 .dbline 53
0000 ; LCD_DIR_PORT = 0xff; // LCD port output
0000 8FEF ldi R24,255
0002 87BB out 0x17,R24
0004 .dbline 54
0004 ; LCD_OP_PORT = 0x30; // Load high-data to port
0004 80E3 ldi R24,48
0006 88BB out 0x18,R24
0008 .dbline 55
0008 ; lcd_clear_rw(); // Set LCD to write
0008 C198 cbi 0x18,1
000A .dbline 56
000A ; lcd_clear_rs(); // Set LCD to command
000A C098 cbi 0x18,0
000C .dbline 57
000C ; lcd_set_e(); // Write data to LCD
000C C29A sbi 0x18,2
000E .dbline 58
000E ; asm("nop");
000E 0000 nop
0010 .dbline 59
0010 ; asm("nop");
0010 0000 nop
0012 .dbline 60
0012 ; lcd_clear_e(); // Disable LCD
0012 C298 cbi 0x18,2
0014 .dbline 61
0014 ; delay_nus(40);
0014 08E2 ldi R16,40
0016 10E0 ldi R17,0
0018 0E940000 xcall _delay_nus
001C .dbline 62
001C ; lcd_clear_rw() ; // Set LCD to write
001C C198 cbi 0x18,1
001E .dbline 63
001E ; lcd_clear_rs(); // Set LCD to command
001E C098 cbi 0x18,0
0020 .dbline 64
0020 ; lcd_set_e(); // Write data to LCD
0020 C29A sbi 0x18,2
0022 .dbline 65
0022 ; asm("nop");
0022 0000 nop
0024 .dbline 66
0024 ; asm("nop");
0024 0000 nop
0026 .dbline 67
0026 ; lcd_clear_e(); // Disable LCD
0026 C298 cbi 0x18,2
0028 .dbline 68
0028 ; delay_nus(40);
0028 08E2 ldi R16,40
002A 10E0 ldi R17,0
002C 0E940000 xcall _delay_nus
0030 .dbline 69
0030 ; lcd_set_e(); // Write data to LCD
0030 C29A sbi 0x18,2
0032 .dbline 70
0032 ; asm("nop");
0032 0000 nop
0034 .dbline 71
0034 ; asm("nop");
0034 0000 nop
0036 .dbline 72
0036 ; lcd_clear_e(); // Disable LCD
0036 C298 cbi 0x18,2
0038 .dbline 73
0038 ; delay_nus(40);
0038 08E2 ldi R16,40
003A 10E0 ldi R17,0
003C 0E940000 xcall _delay_nus
0040 .dbline 74
0040 ; LCD_OP_PORT = 0x20;
0040 80E2 ldi R24,32
0042 88BB out 0x18,R24
0044 .dbline 75
0044 ; lcd_set_e(); // Write data to LCD
0044 C29A sbi 0x18,2
0046 .dbline 76
0046 ; asm("nop");
0046 0000 nop
0048 .dbline 77
0048 ; asm("nop");
0048 0000 nop
004A .dbline 78
004A ; lcd_clear_e(); // Disable LCD
004A C298 cbi 0x18,2
004C .dbline 79
004C ; delay_nus(40);
004C 08E2 ldi R16,40
004E 10E0 ldi R17,0
0050 .dbline -2
0050 .dbline 80
0050 ; }
0050 L1:
0050 .dbline 0 ; func end
0050 0C940000 xjmp _delay_nus
0054 .dbend
0054 .dbfunc e LCD_Busy _LCD_Busy fV
0054 ; low -> R20
0054 ; high -> R22
0054 ; temp -> R10
.even
0054 _LCD_Busy::
0054 0E940000 xcall push_gset3
0058 .dbline -1
0058 .dbline 85
0058 ; //*****************************************************//
0058 ; // This routine will return the busy flag from the LCD //
0058 ; //*****************************************************//
0058 ; void LCD_Busy ( void )
0058 ; {
0058 .dbline 88
0058 ; unsigned char temp,high;
0058 ; unsigned char low;
0058 ; LCD_DIR_PORT = 0x0f; // Make I/O Port input
0058 8FE0 ldi R24,15
005A 87BB out 0x17,R24
005C L3:
005C .dbline 90
005C ; do
005C ; {
005C .dbline 91
005C ; temp=LCD_OP_PORT;
005C A8B2 in R10,0x18
005E .dbline 92
005E ; temp=temp&BIT3;
005E 8A2D mov R24,R10
0060 8870 andi R24,8
0062 A82E mov R10,R24
0064 .dbline 93
0064 ; LCD_OP_PORT=temp;
0064 88BB out 0x18,R24
0066 .dbline 94
0066 ; lcd_set_rw(); // Set LCD to READ
0066 C19A sbi 0x18,1
0068 .dbline 95
0068 ; lcd_clear_rs();
0068 C098 cbi 0x18,0
006A .dbline 96
006A ; lcd_set_e();
006A C29A sbi 0x18,2
006C .dbline 97
006C ; delay_nus(3);
006C 03E0 ldi R16,3
006E 10E0 ldi R17,0
0070 0E940000 xcall _delay_nus
0074 .dbline 98
0074 ; high = LCD_IP_PORT; // read the high nibble.
0074 66B3 in R22,0x16
0076 .dbline 99
0076 ; lcd_clear_e(); // Disable LCD
0076 C298 cbi 0x18,2
0078 .dbline 100
0078 ; lcd_set_e();
0078 C29A sbi 0x18,2
007A .dbline 101
007A ; asm("nop");
007A 0000 nop
007C .dbline 102
007C ; asm("nop");
007C 0000 nop
007E .dbline 103
007E ; low = LCD_IP_PORT; // read the low nibble.
007E 46B3 in R20,0x16
0080 .dbline 104
0080 ; lcd_clear_e(); // Disable LCD
0080 C298 cbi 0x18,2
0082 .dbline 105
0082 L4:
0082 .dbline 105
0082 ; } while(high & 0x80);
0082 67FD sbrc R22,7
0084 EBCF rjmp L3
0086 .dbline 106
0086 ; delay_nus(20);
0086 04E1 ldi R16,20
0088 10E0 ldi R17,0
008A 0E940000 xcall _delay_nus
008E .dbline -2
008E .dbline 107
008E ; }
008E L2:
008E 0E940000 xcall pop_gset3
0092 .dbline 0 ; func end
0092 0895 ret
0094 .dbsym r low 20 c
0094 .dbsym r high 22 c
0094 .dbsym r temp 10 c
0094 .dbend
0094 .dbfunc e LCD_WriteControl _LCD_WriteControl fV
0094 ; temp -> R20
0094 ; CMD -> R22
.even
0094 _LCD_WriteControl::
0094 0E940000 xcall push_gset2
0098 602F mov R22,R16
009A .dbline -1
009A .dbline 112
009A ; // ********************************************** //
009A ; // *** Write a control instruction to the LCD *** //
009A ; // ********************************************** //
009A ; void LCD_WriteControl (unsigned char CMD)
009A ; {
009A .dbline 114
009A ; char temp;
009A ; LCD_Busy(); // Test if LCD busy
009A DCDF xcall _LCD_Busy
009C .dbline 115
009C ; LCD_DIR_PORT = 0xff; // LCD port output
009C 8FEF ldi R24,255
009E 87BB out 0x17,R24
00A0 .dbline 116
00A0 ; temp=LCD_OP_PORT;
00A0 48B3 in R20,0x18
00A2 .dbline 117
00A2 ; temp=temp&BIT3;
00A2 4870 andi R20,8
00A4 .dbline 118
00A4 ; LCD_OP_PORT =(CMD & 0xf0)|temp; // Load high-data to port
00A4 862F mov R24,R22
00A6 807F andi R24,240
00A8 842B or R24,R20
00AA 88BB out 0x18,R24
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