📄 usart_icc.lst
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__start:
__text_start:
45 E5CF LDI R28,0x5F
46 E0D4 LDI R29,4
47 BFCD OUT 0x3D,R28
48 BFDE OUT 0x3E,R29
49 51CE SUBI R28,0x1E
4A 40D0 SBCI R29,0
4B EA0A LDI R16,0xAA
4C 8308 STD Y+0,R16
4D 2400 CLR R0
4E E9E6 LDI R30,0x96
4F E0F0 LDI R31,0
50 E010 LDI R17,0
51 39E9 CPI R30,0x99
52 07F1 CPC R31,R17
53 F011 BEQ 0x0056
54 9201 ST R0,Z+
55 CFFB RJMP 0x0051
56 8300 STD Z+0,R16
57 E5E4 LDI R30,0x54
58 E0F0 LDI R31,0
59 E6A0 LDI R26,0x60
5A E0B0 LDI R27,0
5B E010 LDI R17,0
5C E000 LDI R16,0
5D BF0B OUT 0x3B,R16
5E 38EA CPI R30,0x8A
5F 07F1 CPC R31,R17
60 F021 BEQ 0x0065
61 95C8 LPM
62 9631 ADIW R30,1
63 920D ST R0,X+
64 CFF9 RJMP 0x005E
65 940E 0195 CALL _main
_exit:
67 CFFF RJMP _exit
FILE: E:\新建文件夹\usart_icc\cfile\delay.c
(0001) #define DELAY_C
(0002) #include "includes.h"
(0003) #define XTAL 4 //晶振频率，单位MHz
(0004) void delay_1us(void) //1us延时函数
(0005) {
(0006) asm("nop");
_delay_1us:
68 0000 NOP
69 9508 RET
_delay_nus:
i --> R20
n --> R10
6A 940E 0256 CALL push_xgset300C
6C 0158 MOVW R10,R16
(0007) }
(0008)
(0009) void delay_nus(unsigned int n) //N us延时函数
(0010) {
(0011) unsigned int i=0;
(0012) for (i=0;i<n;i++)
6D 2744 CLR R20
6E 2755 CLR R21
6F C003 RJMP 0x0073
(0013) delay_1us();
70 DFF7 RCALL _delay_1us
71 5F4F SUBI R20,0xFF
72 4F5F SBCI R21,0xFF
73 154A CP R20,R10
74 055B CPC R21,R11
75 F3D0 BCS 0x0070
76 940C 025B JMP pop_xgset300C
(0014) }
(0015)
(0016) void delay_1ms(void) //1ms延时函数
(0017) {
(0018) unsigned int i;
(0019) for (i=0;i<(unsigned int)(XTAL*143-2);i++);
_delay_1ms:
i --> R16
78 2700 CLR R16
79 2711 CLR R17
7A C002 RJMP 0x007D
7B 5F0F SUBI R16,0xFF
7C 4F1F SBCI R17,0xFF
7D E38A LDI R24,0x3A
7E E092 LDI R25,2
7F 1708 CP R16,R24
80 0719 CPC R17,R25
81 F3C8 BCS 0x007B
82 9508 RET
_delay_nms:
i --> R20
n --> R10
83 940E 0256 CALL push_xgset300C
85 0158 MOVW R10,R16
(0020) }
(0021)
(0022) void delay_nms(unsigned int n) //N ms延时函数
(0023) {
(0024) unsigned int i=0;
(0025) for (i=0;i<n;i++)
86 2744 CLR R20
87 2755 CLR R21
88 C003 RJMP 0x008C
(0026) {
(0027) delay_1ms();
89 DFEE RCALL _delay_1ms
8A 5F4F SUBI R20,0xFF
8B 4F5F SBCI R21,0xFF
8C 154A CP R20,R10
8D 055B CPC R21,R11
8E F3D0 BCS 0x0089
8F 940C 025B JMP pop_xgset300C
FILE: E:\新建文件夹\usart_icc\cfile\LCD.c
(0001) // ************************************************
(0002) // *** 采用4位数据线的1602液晶驱动程序 ***
(0003) // *** LCD.C ***
(0004) // ************************************************
(0005) #define ENABLE_BIT_DEFINITIONS
(0006) #define LCD_C
(0007) #include "includes.h"
(0008) // ***** Define I/O pins ***** //
(0009) #define BIT7 0x80
(0010) #define BIT6 0x40
(0011) #define BIT5 0x20
(0012) #define BIT4 0x10
(0013) #define BIT3 0x08
(0014) #define BIT2 0x04
(0015) #define BIT1 0x02
(0016) #define BIT0 0x01
(0017) // *** Set port for LCD Data Bus 8 bit mode *** //
(0018) #define LCD_OP_PORT PORTB
(0019) #define LCD_IP_PORT PINB
(0020) #define LCD_DIR_PORT DDRB
(0021) // *** Set LCD Enable Port and Bit values *** //
(0022) //#define LCD_EN LCD_OP_PORT.2
(0023) // *** Set LCD Register Select Port and Bit values *** //
(0024) //#define LCD_RS LCD_OP_PORT.0
(0025) // *** Set LCD Read/Write Port and Bit values *** //
(0026) //#define LCD_RW LCD_OP_PORT.1
(0027) /****************************************************************/
(0028)
(0029) #define LCD_EN (1 << 2) //引脚定义
(0030) #define LCD_RS (1 << 0)
(0031) #define LCD_RW (1 << 1)
(0032)
(0033) #define lcd_set_e() (LCD_OP_PORT |= LCD_EN) //置位与清零
(0034) #define lcd_set_rs() (LCD_OP_PORT |= LCD_RS)
(0035) #define lcd_set_rw() (LCD_OP_PORT |= LCD_RW)
(0036) #define lcd_clear_e() (LCD_OP_PORT &= ~LCD_EN)
(0037) #define lcd_clear_rs() (LCD_OP_PORT &= ~LCD_RS)
(0038) #define lcd_clear_rw() (LCD_OP_PORT &= ~LCD_RW)
(0039) /****************************************************************/
(0040)
(0041) #define LCD_ON 0x0C
(0042) #define LCD_CURS_ON 0x0D
(0043) #define LCD_OFF 0x08
(0044) #define LCD_HOME 0x02
(0045) #define LCD_CLEAR 0x01
(0046) #define LCD_NEW_LINE 0xC0
(0047) #define LCD_FUNCTION_SET 0x28
(0048) #define LCD_MODE_SET 0x06
(0049)
(0050)
(0051) void LCD_INIT(void)
(0052) {
(0053) LCD_DIR_PORT = 0xff; // LCD port output
_LCD_INIT:
91 EF8F LDI R24,0xFF
92 BB87 OUT 0x17,R24
(0054) LCD_OP_PORT = 0x30; // Load high-data to port
93 E380 LDI R24,0x30
94 BB88 OUT 0x18,R24
(0055) lcd_clear_rw(); // Set LCD to write
95 98C1 CBI 0x18,1
(0056) lcd_clear_rs(); // Set LCD to command
96 98C0 CBI 0x18,0
(0057) lcd_set_e(); // Write data to LCD
97 9AC2 SBI 0x18,2
(0058) asm("nop");
98 0000 NOP
(0059) asm("nop");
99 0000 NOP
(0060) lcd_clear_e(); // Disable LCD
9A 98C2 CBI 0x18,2
(0061) delay_nus(40);
9B E208 LDI R16,0x28
9C E010 LDI R17,0
9D 940E 006A CALL _delay_nus
(0062) lcd_clear_rw() ; // Set LCD to write
9F 98C1 CBI 0x18,1
(0063) lcd_clear_rs(); // Set LCD to command
A0 98C0 CBI 0x18,0
(0064) lcd_set_e(); // Write data to LCD
A1 9AC2 SBI 0x18,2
(0065) asm("nop");
A2 0000 NOP
(0066) asm("nop");
A3 0000 NOP
(0067) lcd_clear_e(); // Disable LCD
A4 98C2 CBI 0x18,2
(0068) delay_nus(40);
A5 E208 LDI R16,0x28
A6 E010 LDI R17,0
A7 940E 006A CALL _delay_nus
(0069) lcd_set_e(); // Write data to LCD
A9 9AC2 SBI 0x18,2
(0070) asm("nop");
AA 0000 NOP
(0071) asm("nop");
AB 0000 NOP
(0072) lcd_clear_e(); // Disable LCD
AC 98C2 CBI 0x18,2
(0073) delay_nus(40);
AD E208 LDI R16,0x28
AE E010 LDI R17,0
AF 940E 006A CALL _delay_nus
(0074) LCD_OP_PORT = 0x20;
B1 E280 LDI R24,0x20
B2 BB88 OUT 0x18,R24
(0075) lcd_set_e(); // Write data to LCD
B3 9AC2 SBI 0x18,2
(0076) asm("nop");
B4 0000 NOP
(0077) asm("nop");
B5 0000 NOP
(0078) lcd_clear_e(); // Disable LCD
B6 98C2 CBI 0x18,2
(0079) delay_nus(40);
B7 E208 LDI R16,0x28
B8 E010 LDI R17,0
B9 940E 006A CALL _delay_nus
BB 9508 RET
_LCD_Busy:
low --> R12
high --> R10
temp --> R20
BC 940E 026E CALL push_xgset303C
(0080) }
(0081) //*****************************************************//
(0082) // This routine will return the busy flag from the LCD //
(0083) //*****************************************************//
(0084) void LCD_Busy ( void )
(0085) {
(0086) unsigned char temp,high;
(0087) unsigned char low;
(0088) LCD_DIR_PORT = 0x0f; // Make I/O Port input
BE E08F LDI R24,0xF
BF BB87 OUT 0x17,R24
(0089) do
(0090) {
(0091) temp=LCD_OP_PORT;
C0 B348 IN R20,0x18
(0092) temp=temp&BIT3;
C1 7048 ANDI R20,0x8
(0093) LCD_OP_PORT=temp;
C2 BB48 OUT 0x18,R20
(0094) lcd_set_rw(); // Set LCD to READ
C3 9AC1 SBI 0x18,1
(0095) lcd_clear_rs();
C4 98C0 CBI 0x18,0
(0096) lcd_set_e();
C5 9AC2 SBI 0x18,2
(0097) delay_nus(3);
C6 E003 LDI R16,3
C7 E010 LDI R17,0
C8 940E 006A CALL _delay_nus
(0098) high = LCD_IP_PORT; // read the high nibble.
CA B2A6 IN R10,0x16
(0099) lcd_clear_e(); // Disable LCD
CB 98C2 CBI 0x18,2
(0100) lcd_set_e();
CC 9AC2 SBI 0x18,2
(0101) asm("nop");
CD 0000 NOP
(0102) asm("nop");
CE 0000 NOP
(0103) low = LCD_IP_PORT; // read the low nibble.
CF B2C6 IN R12,0x16
(0104) lcd_clear_e(); // Disable LCD
D0 98C2 CBI 0x18,2
(0105) } while(high & 0x80);
D1 FCA7 SBRC R10,7
D2 CFED RJMP 0x00C0
(0106) delay_nus(20);
D3 E104 LDI R16,0x14
D4 E010 LDI R17,0
D5 940E 006A CALL _delay_nus
D7 940C 0275 JMP pop_xgset303C
_LCD_WriteControl:
temp --> R20
CMD --> R22
D9 934A ST R20,-Y
DA 936A ST R22,-Y
DB 2F60 MOV R22,R16
(0107) }
(0108) // ********************************************** //
(0109) // *** Write a control instruction to the LCD *** //
(0110) // ********************************************** //
(0111) void LCD_WriteControl (unsigned char CMD)
(0112) {
(0113) char temp;
(0114) LCD_Busy(); // Test if LCD busy
DC DFDF RCALL _LCD_Busy
(0115) LCD_DIR_PORT = 0xff; // LCD port output
DD EF8F LDI R24,0xFF
DE BB87 OUT 0x17,R24
(0116) temp=LCD_OP_PORT;
DF B348 IN R20,0x18
(0117) temp=temp&BIT3;
E0 7048 ANDI R20,0x8
(0118) LCD_OP_PORT =(CMD & 0xf0)|temp; // Load high-data to port
E1 2F86 MOV R24,R22
E2 7F80 ANDI R24,0xF0
E3 2B84 OR R24,R20
E4 BB88 OUT 0x18,R24
(0119) lcd_clear_rw(); // Set LCD to write
E5 98C1 CBI 0x18,1
(0120) lcd_clear_rs(); // Set LCD to command
E6 98C0 CBI 0x18,0
(0121) lcd_set_e(); // Write data to LCD
E7 9AC2 SBI 0x18,2
(0122) asm("nop");
E8 0000 NOP
(0123) asm("nop");
E9 0000 NOP
(0124) lcd_clear_e(); // Disable LCD
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