📄 car1.lst
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508 930A ST R16,-Y
509 0181 MOVW R16,R2
50A 0192 MOVW R18,R4
50B 940E 0868 CALL fpadd2
50D 870C STD Y+12,R16
50E 871D STD Y+13,R17
50F 872E STD Y+14,R18
510 873F STD Y+15,R19
(0090) flag1 = 1;
511 24EE CLR R14
512 94E3 INC R14
(0091) if( dataf < 0 )
513 8C2A LDD R2,Y+26
514 8C3B LDD R3,Y+27
515 8C4C LDD R4,Y+28
516 8C5D LDD R5,Y+29
517 E50C LDI R16,0x5C
518 E010 LDI R17,0
519 940E 07EC CALL lpm32
51B 933A ST R19,-Y
51C 932A ST R18,-Y
51D 931A ST R17,-Y
51E 930A ST R16,-Y
51F 0181 MOVW R16,R2
520 0192 MOVW R18,R4
521 940E 0999 CALL fpcmp2
523 F4BC BGE 0x053B
(0092) {
(0093) flag2 = 1;
524 24CC CLR R12
525 94C3 INC R12
(0094) dataftmp -= 4; //随便一个整数 只是为了扩大为首位不为0的数
526 842C LDD R2,Y+12
527 843D LDD R3,Y+13
528 844E LDD R4,Y+14
529 845F LDD R5,Y+15
52A E508 LDI R16,0x58
52B E010 LDI R17,0
52C 940E 07EC CALL lpm32
52E 933A ST R19,-Y
52F 932A ST R18,-Y
530 931A ST R17,-Y
531 930A ST R16,-Y
532 0181 MOVW R16,R2
533 0192 MOVW R18,R4
534 940E 0873 CALL fpsub2
536 870C STD Y+12,R16
537 871D STD Y+13,R17
538 872E STD Y+14,R18
539 873F STD Y+15,R19
(0095) flag1 = 0;
53A 24EE CLR R14
(0096) }
(0097) }
(0098)
(0099) for( i = 0; i < p + 1; i++ )
53B 2744 CLR R20
53C C00F RJMP 0x054C
(0100) dataftmp = dataftmp * 10;
53D E504 LDI R16,0x54
53E E010 LDI R17,0
53F 940E 07EC CALL lpm32
541 01CE MOVW R24,R28
542 960C ADIW R24,0xC
543 939A ST R25,-Y
544 938A ST R24,-Y
545 940E 0982 CALL fpmule1
547 870C STD Y+12,R16
548 871D STD Y+13,R17
549 872E STD Y+14,R18
54A 873F STD Y+15,R19
54B 9543 INC R20
54C 2F86 MOV R24,R22
54D 5F8F SUBI R24,0xFF
54E 1748 CP R20,R24
54F F368 BCS 0x053D
(0101)
(0102) long_to_string( (long int)dataftmp, datastr1 );
550 01CE MOVW R24,R28
551 9602 ADIW R24,2
552 8399 STD Y+1,R25
553 8388 STD Y+0,R24
554 850C LDD R16,Y+12
555 851D LDD R17,Y+13
556 852E LDD R18,Y+14
557 853F LDD R19,Y+15
558 940E 087E CALL fpint
55A DE8D RCALL _long_to_string
(0103) k = strlen( datastr1 );
55B 018E MOVW R16,R28
55C 5F0E SUBI R16,0xFE
55D 4F1F SBCI R17,0xFF
55E 940E 06B7 CALL _strlen
560 2EA0 MOV R10,R16
(0104)
(0105) for( i = 1; i < p + 1; i++ )
561 E041 LDI R20,1
562 C013 RJMP 0x0576
(0106) *( datastr1 + (k-i) ) = *( datastr1 + (k-i-1) );
563 2E24 MOV R2,R20
564 2433 CLR R3
565 2C4A MOV R4,R10
566 2455 CLR R5
567 1842 SUB R4,R2
568 0853 SBC R5,R3
569 01CE MOVW R24,R28
56A 9601 ADIW R24,1
56B 01F2 MOVW R30,R4
56C 0FE8 ADD R30,R24
56D 1FF9 ADC R31,R25
56E 8020 LDD R2,Z+0
56F 01CE MOVW R24,R28
570 9602 ADIW R24,2
571 01F2 MOVW R30,R4
572 0FE8 ADD R30,R24
573 1FF9 ADC R31,R25
574 8220 STD Z+0,R2
575 9543 INC R20
576 2F86 MOV R24,R22
577 5F8F SUBI R24,0xFF
578 1748 CP R20,R24
579 F348 BCS 0x0563
(0107)
(0108) *( datastr1 + (k-i) ) = '.';
57A 2E24 MOV R2,R20
57B 2433 CLR R3
57C 2DEA MOV R30,R10
57D 27FF CLR R31
57E 19E2 SUB R30,R2
57F 09F3 SBC R31,R3
580 01CE MOVW R24,R28
581 9602 ADIW R24,2
582 0FE8 ADD R30,R24
583 1FF9 ADC R31,R25
584 E28E LDI R24,0x2E
585 8380 STD Z+0,R24
(0109)
(0110)
(0111) if( flag1 ) //如果为0.00820之类的数
586 20EE TST R14
587 F019 BEQ 0x058B
(0112) {
(0113) *datastr1 = '0';
588 E380 LDI R24,0x30
589 838A STD Y+2,R24
(0114) flag1 = 0;
58A 24EE CLR R14
(0115) }
(0116)
(0117) if( flag2 ) //如果为-0.00820之类的数
58B 20CC TST R12
58C F021 BEQ 0x0591
(0118) {
(0119) *datastr1 = '-';
58D E28D LDI R24,0x2D
58E 838A STD Y+2,R24
(0120) *( datastr1 + 1 ) = '0';
58F E380 LDI R24,0x30
590 838B STD Y+3,R24
(0121) }
(0122)
(0123) if( p == 0 )
591 2366 TST R22
592 F461 BNE 0x059F
(0124) {
(0125) *( datastr1 + (k-i) ) = '\0';
593 2E24 MOV R2,R20
594 2433 CLR R3
595 2DEA MOV R30,R10
596 27FF CLR R31
597 19E2 SUB R30,R2
598 09F3 SBC R31,R3
599 01CE MOVW R24,R28
59A 9602 ADIW R24,2
59B 0FE8 ADD R30,R24
59C 1FF9 ADC R31,R25
59D 2422 CLR R2
59E 8220 STD Z+0,R2
(0126) }
(0127)
(0128) strcpy( datastr, datastr1 );
59F 019E MOVW R18,R28
5A0 5F2E SUBI R18,0xFE
5A1 4F3F SBCI R19,0xFF
5A2 8D0E LDD R16,Y+30
5A3 8D1F LDD R17,Y+31
5A4 940E 06AE CALL _strcpy
5A6 9660 ADIW R28,0x10
5A7 940E 0766 CALL pop_xgsetF0FC
5A9 9624 ADIW R28,4
5AA 9508 RET
(0129) }
(0130) //*********************************************************************************************
(0131)
(0132) //==========================================
(0133) //函数名称：液晶模块使能
(0134) //函数作用: 使能液晶
(0135) //入口参数: 无
(0136) //返回类型：无
(0137) //==========================================
(0138) void LCD_en_write(void)
(0139) {
(0140) EN_SET;
_LCD_en_write:
5AB 9ADB SBI 0x1B,3
(0141) delay_nus(4);
5AC E004 LDI R16,4
5AD E010 LDI R17,0
5AE 940E 03B4 CALL _delay_nus
(0142) EN_CLR;
5B0 98DB CBI 0x1B,3
5B1 9508 RET
_LCD_write_command:
command --> R20
5B2 934A ST R20,-Y
5B3 2F40 MOV R20,R16
(0143) }
(0144)
(0145) //==========================================
(0146) //函数名称：写指令
(0147) //函数作用:
(0148) //入口参数: 液晶指令command
(0149) //返回类型：无
(0150) //==========================================
(0151) void LCD_write_command(uchar command)
(0152) {
(0153) delay_nus( 16 );
5B4 E100 LDI R16,0x10
5B5 E010 LDI R17,0
5B6 940E 03B4 CALL _delay_nus
(0154) RS_CLR;
5B8 98D9 CBI 0x1B,1
(0155) DB &= 0X0F; //清高四位
5B9 B38B IN R24,0x1B
5BA 708F ANDI R24,0xF
5BB BB8B OUT 0x1B,R24
(0156) DB |= command & 0xf0; //写高四位
5BC 2F84 MOV R24,R20
5BD 7F80 ANDI R24,0xF0
5BE B22B IN R2,0x1B
5BF 2A28 OR R2,R24
5C0 BA2B OUT 0x1B,R2
(0157) LCD_en_write();
5C1 DFE9 RCALL _LCD_en_write
(0158) command=command << 4; //低四位移到高四位
5C2 2F84 MOV R24,R20
5C3 708F ANDI R24,0xF
5C4 9582 SWAP R24
5C5 2F48 MOV R20,R24
(0159) DB &= 0x0f; //清高四位
5C6 B38B IN R24,0x1B
5C7 708F ANDI R24,0xF
5C8 BB8B OUT 0x1B,R24
(0160) DB |= command & 0xf0; //写低四位
5C9 2F84 MOV R24,R20
5CA 7F80 ANDI R24,0xF0
5CB B22B IN R2,0x1B
5CC 2A28 OR R2,R24
5CD BA2B OUT 0x1B,R2
(0161) LCD_en_write();
5CE DFDC RCALL _LCD_en_write
5CF 9149 LD R20,Y+
5D0 9508 RET
_LCD_write_data:
DATA --> R20
5D1 934A ST R20,-Y
5D2 2F40 MOV R20,R16
(0162) //delay_nms(2); //清屏指令时间很长, 保险起见，可以增加
(0163) }
(0164)
(0165) //==========================================
(0166) //函数名称：写数据
(0167) //函数作用:
(0168) //入口参数: 数据DATA
(0169) //返回类型：无
(0170) //==========================================
(0171) void LCD_write_data(uchar DATA)
(0172) {
(0173) delay_nus(16);
5D3 E100 LDI R16,0x10
5D4 E010 LDI R17,0
5D5 940E 03B4 CALL _delay_nus
(0174) RS_SET; //RS=1
5D7 9AD9 SBI 0x1B,1
(0175) DB &= 0X0f; //清高四位
5D8 B38B IN R24,0x1B
5D9 708F ANDI R24,0xF
5DA BB8B OUT 0x1B,R24
(0176) DB |= DATA&0xf0; //写高四位
5DB 2F84 MOV R24,R20
5DC 7F80 ANDI R24,0xF0
5DD B22B IN R2,0x1B
5DE 2A28 OR R2,R24
5DF BA2B OUT 0x1B,R2
(0177) LCD_en_write();
5E0 DFCA RCALL _LCD_en_write
(0178) DATA = DATA << 4; //低四位移到高四位
5E1 2F84 MOV R24,R20
5E2 708F ANDI R24,0xF
5E3 9582 SWAP R24
5E4 2F48 MOV R20,R24
(0179) DB &= 0X0f; //清高四位
5E5 B38B IN R24,0x1B
5E6 708F ANDI R24,0xF
5E7 BB8B OUT 0x1B,R24
(0180) DB |= DATA&0xf0; //写低四位
5E8 2F84 MOV R24,R20
5E9 7F80 ANDI R24,0xF0
5EA B22B IN R2,0x1B
5EB 2A28 OR R2,R24
5EC BA2B OUT 0x1B,R2
(0181) LCD_en_write();
5ED DFBD RCALL _LCD_en_write
5EE 9149 LD R20,Y+
5EF 9508 RET
(0182) }
(0183)
(0184) //==========================================
(0185) //函数名称：液晶初始化函数
(0186) //函数作用:
(0187) //入口参数: 无
(0188) //返回类型：无
(0189) //==========================================
(0190) void LCD_init( void )
(0191) {
(0192) DB_DDR_OUT;
_LCD_init:
5F0 B38A IN R24,0x1A
5F1 6F80 ORI R24,0xF0
5F2 BB8A OUT 0x1A,R24
5F3 B38A IN R24,0x1A
5F4 608A ORI R24,0xA
5F5 BB8A OUT 0x1A,R24
(0193) LCD_write_command(0x28);
5F6 E208 LDI R16,0x28
5F7 DFBA RCALL _LCD_write_command
(0194) LCD_en_write(); //********总结这里一定要加这液晶使能*********
5F8 DFB2 RCALL _LCD_en_write
(0195) delay_nus(20);
5F9 E104 LDI R16,0x14
5FA E010 LDI R17,0
5FB 940E 03B4 CALL _delay_nus
(0196) LCD_write_command(0x28); //4位显示
5FD E208 LDI R16,0x28
5FE DFB3 RCALL _LCD_write_command
(0197) LCD_write_command(0x0c); //显示开
5FF E00C LDI R16,0xC
600 DFB1 RCALL _LCD_write_command
(0198) LCD_write_command(0x01); //清屏
601 E001 LDI R16,1
602 DFAF RCALL _LCD_write_command
(0199) delay_nms(5); //延时一定要长
603 E005 LDI R16,5
604 E010 LDI R17,0
605 940E 03CC CALL _delay_nms
607 9508 RET
_LCD_set_rc:
address --> R20
c --> R22
r --> R10
608 940E 0790 CALL push_xgsetF00C
60A 2F62 MOV R22,R18
60B 2EA0 MOV R10,R16
(0200) }
(0201)
(0202) //==========================================
(0203) //函数名称：写地址
(0204) //函数作用:
(0205) //入口参数: 行位置r, 列位置c
(0206) //返回类型：无
(0207) //==========================================
(0208) void LCD_set_rc( uchar r, uchar c )
(0209) {
(0210) uchar address;
(0211)
(0212) if (r == 1)
60C 2D8A MOV R24,R10
60D 3081 CPI R24,1
60E F419 BNE 0x0612
(0213) address = 0x80 + c;
60F 2F46 MOV R20,R22
610 5840 SUBI R20,0x80
611 C005 RJMP 0x0617
(0214) else if(r == 2)
612 2D8A MOV R24,R10
613 3082 CPI R24,2
614 F411 BNE 0x0617
(0215) address = 0xc0 + c;
615 2F46 MOV R20,R22
616 5440 SUBI R20,0x40
(0216)
(0217) LCD_write_command( address );
617 2F04 MOV R16,R20
618 DF99 RCALL _LCD_write_command
619 940C 0797 JMP pop_xgsetF00C
_LCD_write_string:
s --> R20
c --> R12
r --> R10
61B 940E 079E CALL push_xgset303C
61D 2EC2 MOV R12,R18
61E 2EA0 MOV R10,R16
61F 814E LDD R20,Y+6
620 815F LDD R21,Y+7
(0218) }
(0219)
(0220) //==========================================
(0221) //函数名称：写字符串
(0222) //函数作用: 在指定位置写一串字符串
(0223) //入口参数: 行位置r， 列位置c, 字符串*s
(0224) //返回类型：无
(0225) //示例 : LCD_write_string( 1, 2, "dongxixiaonanbei" );
(0226) //==========================================
(0227) void LCD_write_string(uchar r, uchar c, uchar *s)
(0228) {
(0229) LCD_set_rc( r, c ); //写地址
621 2D2C MOV R18,R12
622 2D0A MOV R16,R10
623 DFE4 RCALL _LCD_set_rc
624 C005 RJMP 0x0⌨️ 快捷键说明
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