📄 cycle.lst
字号:
__start:
__text_start:
0018 E5CF LDI R28,0x5F
0019 E0D2 LDI R29,2
001A BFCD OUT P3D,R28
001B BFDE OUT P3E,R29
001C 51C0 SUBI R28,0x10
001D 40D0 SBCI R29,0
001E EA0A LDI R16,0xAA
001F 8308 STD R16,0+Y
0020 2400 CLR R0
0021 E6E6 LDI R30,0x66
0022 E0F0 LDI R31,0
0023 E010 LDI R17,0
0024 36EA CPI R30,0x6A
0025 07F1 CPC R31,R17
0026 F011 BEQ 0x0029
0027 9201 ST R0,Z+
0028 CFFB RJMP 0x0024
0029 8300 STD R16,0+Z
002A E2EA LDI R30,0x2A
002B E0F0 LDI R31,0
002C E6A0 LDI R26,0x60
002D E0B0 LDI R27,0
002E E010 LDI R17,0
002F 33E0 CPI R30,0x30
0030 07F1 CPC R31,R17
0031 F021 BEQ 0x0036
0032 95C8 LPM
0033 9631 ADIW R30,1
0034 920D ST R0,X+
0035 CFF9 RJMP 0x002F
0036 D066 RCALL _main
_exit:
0037 CFFF RJMP _exit
FILE: D:\ICC-AVR\examples.sl\CYCLE\cycle.c
(0000) /**********************************************
(0001) http://www.sl.com.cn
(0002) 双龙电子公司----周期测量演示程序(ICCAVR)
(0003) 作者：詹卫前
(0004) 1、学习定时器T1捕捉(捕获)中断的使用
(0005) **********************************************/
(0006) #include <io8515.h>
(0007) #pragma interrupt_handler Icp_timer1:4 // 设置ICP中断
(0008) /* 七段译码字形表 */
(0009) const unsigned char tabel[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
(0010) /* 显示缓冲区 */
(0011) unsigned char ledbuff[]={0x3f,0x3f,0x3f,0x3f,0x3f,0x3f};
(0012) unsigned int oldcount;
(0013) unsigned int newcount;
(0014) /******************************
(0015) 1ms延时程序
(0016) ******************************/
(0017) void delay_1ms(void)
(0018) {
(0019) unsigned int i;
(0020) for(i=1;i<1142;i++)
_delay_1ms:
i --> R16
0038 E001 LDI R16,1
0039 E010 LDI R17,0
003A C002 RJMP 0x003D
(0021) ;
003B 5F0F SUBI R16,0xFF
003C 4F1F SBCI R17,0xFF
003D 3706 CPI R16,0x76
003E E0E4 LDI R30,4
003F 071E CPC R17,R30
0040 F3D0 BCS 0x003B
(0022) }
0041 9508 RET
_display:
i --> R20
0042 D0B5 RCALL push_gset1
(0023) /******************************
(0024) 六路动态扫描显示电路
(0025) ******************************/
(0026) void display(void)
(0027) {
(0028) unsigned char i;
(0029) for (i=0;i<6;i++)
0043 2744 CLR R20
0044 C016 RJMP 0x005B
(0030) {
(0031) PORTB=ledbuff[i];//将显示缓冲区数据送PORTB口
0045 E680 LDI R24,0x60
0046 E090 LDI R25,0
0047 2FE4 MOV R30,R20
0048 27FF CLR R31
0049 0FE8 ADD R30,R24
004A 1FF9 ADC R31,R25
004B 8020 LDD R2,0+Z
004C BA28 OUT P18,R2
(0032) PORTD=~(1<<i); //开始显示
004D E001 LDI R16,1
004E 2F14 MOV R17,R20
004F D0C7 RCALL lsl8
0050 2E20 MOV R2,R16
0051 9420 COM R2
0052 BA22 OUT P12,R2
(0033) delay_1ms(); //每一位显示保持一定时间
0053 DFE4 RCALL _delay_1ms
(0034) PORTD|=(1<<i); //关闭显示
0054 E001 LDI R16,1
0055 2F14 MOV R17,R20
0056 D0C0 RCALL lsl8
0057 B222 IN R2,P12
0058 2A20 OR R2,R16
0059 BA22 OUT P12,R2
(0035) }
005A 9543 INC R20
005B 3046 CPI R20,6
005C F340 BCS 0x0045
(0036) }
005D D09D RCALL pop_gset1
005E 9508 RET
_hextobcd:
temp --> R20
i --> R22
count --> R10
005F D0B2 RCALL push_gset3
0060 2EA0 MOV R10,R16
0061 2EB1 MOV R11,R17
(0037) /************************************
(0038) 将count十六进制数据转换为LED七段码
(0039) ************************************/
(0040) void hextobcd(unsigned int count)
(0041) {
(0042) unsigned char i,temp;
(0043) for (i=0;i<6;i++)
0062 2766 CLR R22
0063 C01F RJMP 0x0083
(0044) {temp=count%10;
0064 E02A LDI R18,0xA
0065 E030 LDI R19,0
0066 2D0A MOV R16,R10
0067 2D1B MOV R17,R11
0068 D070 RCALL mod16u
0069 2F40 MOV R20,R16
006A 2F51 MOV R21,R17
(0045) ledbuff[i]=tabel[temp];
006B E18A LDI R24,0x1A
006C E090 LDI R25,0
006D 2E24 MOV R2,R20
006E 2433 CLR R3
006F 0E28 ADD R2,R24
0070 1E39 ADC R3,R25
0071 2DE2 MOV R30,R2
0072 2DF3 MOV R31,R3
0073 95C8 LPM
0074 E680 LDI R24,0x60
0075 E090 LDI R25,0
0076 2FE6 MOV R30,R22
0077 27FF CLR R31
0078 0FE8 ADD R30,R24
0079 1FF9 ADC R31,R25
007A 8200 STD R0,0+Z
(0046) count=count/10;
007B E02A LDI R18,0xA
007C E030 LDI R19,0
007D 2D0A MOV R16,R10
007E 2D1B MOV R17,R11
007F D05B RCALL div16u
0080 2EA0 MOV R10,R16
0081 2EB1 MOV R11,R17
(0047) }
0082 9563 INC R22
0083 3066 CPI R22,6
0084 F2F8 BCS 0x0064
(0048) }
0085 D08F RCALL pop_gset3
0086 9508 RET
(0049) /******************************
(0050) MCU初始化
(0051) ******************************/
(0052) void mcu_init(void)
(0053) {
(0054) DDRD=0x3f;
_mcu_init:
0087 E38F LDI R24,0x3F
0088 BB81 OUT P11,R24
(0055) DDRB=0xff;
0089 EF8F LDI R24,0xFF
008A BB87 OUT P17,R24
(0056) PORTD=0xff;
008B BB82 OUT P12,R24
(0057) PORTB=0xff;//端口初始化
008C BB88 OUT P18,R24
(0058) TIMSK =0x08;//使能T1捕捉中断
008D E088 LDI R24,0x8
008E BF89 OUT P39,R24
(0059) TCCR1A=0x00;
008F 2422 CLR R2
0090 BC2F OUT P2F,R2
(0060) TCCR1B=0xC2;//CK/8，捕捉周期的单位为1us
0091 EC82 LDI R24,0xC2
0092 BD8E OUT P2E,R24
(0061) ICR1=0;
0093 2433 CLR R3
0094 92300045 STS R3,0x45
0096 92200044 STS R2,0x44
(0062) TCNT1=0;
0098 9230004D STS R3,0x4D
009A 9220004C STS R2,0x4C
(0063) }
009C 9508 RET
(0064) /************************************************
(0065) 主程序：测量ICP引脚上信号的周期
(0066) ************************************************/
(0067) void main()
(0068) {
(0069) mcu_init();
_main:
009D DFE9 RCALL _mcu_init
(0070) SREG|=0x80; //使能全局中断
009E 9478 BSET 7
(0071) for(;;)
(0072) {
(0073) if ((newcount&0xfff8)!=(oldcount&0xfff8))
009F 91900069 LDS R25,_oldcount+1
00A1 91800068 LDS R24,_oldcount
00A3 7F88 ANDI R24,0xF8
00A4 91F00067 LDS R31,_newcount+1
00A6 91E00066 LDS R30,_newcount
00A8 7FE8 ANDI R30,0xF8
00A9 17E8 CP R30,R24
00AA 07F9 CPC R31,R25
00AB F041 BEQ 0x00B4
(0074) {
(0075) oldcount=newcount;
00AC 90300067 LDS R3,_newcount+1
00AE 90200066 LDS R2,_newcount
00B0 92300069 STS R3,_oldcount+1
00B2 92200068 STS R2,_oldcount
(0076) }
(0077) hextobcd(oldcount);
00B4 91100069 LDS R17,_oldcount+1
00B6 91000068 LDS R16,_oldcount
00B8 DFA6 RCALL _hextobcd
(0078) display(); //显示测量值
00B9 DF88 RCALL _display
(0079) }
00BA CFE4 RJMP 0x009F
00BB 9508 RET
_Icp_timer1:
00BC 922A ST R2,-Y
00BD 923A ST R3,-Y
00BE 938A ST R24,-Y
00BF B62F IN R2,P3F
00C0 922A ST R2,-Y
(0080) }
(0081) /**************************************
(0082) 捕捉中断处理程序
(0083) **************************************/
(0084) void Icp_timer1(void)
(0085) {
(0086) newcount=ICR1;
00C1 B424 IN R2,P24
00C2 B435 IN R3,P25
00C3 92300067 STS R3,_newcount+1
00C5 92200066 STS R2,_newcount
(0087) ICR1=0;
00C7 2422 CLR R2
00C8 2433 CLR R3
00C9 92300045 STS R3,0x45
00CB 92200044 STS R2,0x44
(0088) TCNT1=0;
00CD 9230004D STS R3,0x4D
00CF 9220004C STS R2,0x4C
(0089) TCCR1B=0xC2;
00D1 EC82 LDI R24,0xC2
00D2 BD8E OUT P2E,R24
(0090) }
FILE: <library>
00D3 9029 LD R2,Y+
00D4 BE2F OUT P3F,R2
00D5 9189 LD R24,Y+
00D6 9039 LD R3,Y+
00D7 9029 LD R2,Y+
00D8 9518 RETI
mod16u:
00D9 9468 BSET 6
00DA C001 RJMP 0x00DC
div16u:
00DB 94E8 BCLR 6
00DC 92EA ST R14,-Y
00DD 92FA ST R15,-Y
00DE 938A ST R24,-Y
00DF 24EE CLR R14
00E0 18FF SUB R15,R15
00E1 E181 LDI R24,0x11
00E2 1F00 ROL R16
00E3 1F11 ROL R17
00E4 958A DEC R24
00E5 F439 BNE 0x00ED
00E6 F416 BRTC 0x00E9
00E7 2D0E MOV R16,R14
00E8 2D1F MOV R17,R15
00E9 9189 LD R24,Y+
00EA 90F9 LD R15,Y+
00EB 90E9 LD R14,Y+
00EC 9508 RET
00ED 1CEE ROL R14
00EE 1CFF ROL R15
00EF 1AE2 SUB R14,R18
00F0 0AF3 SBC R15,R19
00F1 F420 BCC 0x00F6
00F2 0EE2 ADD R14,R18
00F3 1EF3 ADC R15,R19
00F4 9488 BCLR 0
00F5 CFEC RJMP 0x00E2
00F6 9408 BSET 0
00F7 CFEA RJMP 0x00E2
push_gset1:
00F8 935A ST R21,-Y
00F9 934A ST R20,-Y
00FA 9508 RET
pop_gset1:
00FB E0E1 LDI R30,1
pop:
00FC 9149 LD R20,Y+
00FD 9159 LD R21,Y+
00FE FDE0 SBRC R30,0
00FF 9508 RET
0100 9169 LD R22,Y+
0101 9179 LD R23,Y+
0102 FDE1 SBRC R30,1
0103 9508 RET
0104 90A9 LD R10,Y+
0105 90B9 LD R11,Y+
0106 FDE2 SBRC R30,2
0107 9508 RET
0108 90C9 LD R12,Y+
0109 90D9 LD R13,Y+
010A FDE3 SBRC R30,3
010B 9508 RET
010C 90E9 LD R14,Y+
010D 90F9 LD R15,Y+
010E 9508 RET
push_gset2:
010F 937A ST R23,-Y
0110 936A ST R22,-Y
0111 CFE6 RJMP push_gset1
push_gset3:
0112 92BA ST R11,-Y
0113 92AA ST R10,-Y
0114 CFFA RJMP push_gset2
pop_gset3:
0115 E0E4 LDI R30,4
0116 CFE5 RJMP pop
lsl8:
0117 2311 TST R17
0118 F019 BEQ 0x011C
0119 0F00 LSL R16
011A 951A DEC R17
011B CFFB RJMP lsl8
011C 9508 RET
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