📄 keys.lst
字号:
47: {
00000000 ; SCOPE-START
49: while(x--)
00000000 E004 B L_1 ; T=0x0000000C
00000002 L_3:
51: i=5300;
00000002 4800 LDR R1,=0x14B4
00000004 ---- Variable 'i' assigned to Register 'R1' ----
52: while(i--);
00000004 L_5:
00000004 1C0A MOV R2,R1 ; i
00000006 3901 SUB R1,#0x1
00000008 2A00 CMP R2,#0x0 ; i
0000000A D1FB BNE L_5 ; T=0x00000004
53: }
0000000C L_1:
0000000C 1C01 MOV R1,R0 ; x
0000000E 3801 SUB R0,#0x1
00000010 2900 CMP R1,#0x0 ; x
00000012 D1F6 BNE L_3 ; T=0x00000002
00000014 ; SCOPE-END
54: }
00000014 4770 BX R14
00000016 ENDP ; 'DelayXms?T'
*** CODE SEGMENT '?PR?ScanKey?T?KEYS':
64: void ScanKey(void) //键盘扫描
00000000 B410 PUSH {R4}
66: if(Key.Value)return; //如果上次按键还未处理，则直接返回，不扫描新的按键
00000002 4800 LDR R0,=Key ; Key
00000004 6800 LDR R0,[R0,#0x0] ; Key
00000006 2800 CMP R0,#0x0
00000008 D16A BNE L_10 ; T=0x000000E0
68: if(KEY1IN && KEY2IN && KEY3IN && KEY4IN) //如果输入全部是高，则按键处于释放状态
0000000A 4800 LDR R0,=0xFFFFF420
0000000C 6800 LDR R0,[R0,#0x0]
0000000E 2310 MOV R3,#0x10
00000010 4218 TST R0,R3
00000012 D026 BEQ L_11 ; T=0x00000062
00000014 4800 LDR R0,=0xFFFFF420
00000016 6800 LDR R0,[R0,#0x0]
00000018 2120 MOV R1,#0x20
0000001A 4208 TST R0,R1
0000001C D021 BEQ L_11 ; T=0x00000062
0000001E 4800 LDR R0,=0xFFFFF430
00000020 6800 LDR R0,[R0,#0x0]
00000022 4218 TST R0,R3
00000024 D01D BEQ L_11 ; T=0x00000062
00000026 4800 LDR R0,=0xFFFFF430
00000028 6800 LDR R0,[R0,#0x0]
0000002A 4208 TST R0,R1
0000002C D019 BEQ L_11 ; T=0x00000062
70: if(!(Key.OldValue)) //如果上次无按键按下
0000002E 4800 LDR R0,=Key + 0x4 ; Key+4
00000030 6800 LDR R0,[R0,#0x0] ; Key+4
00000032 2800 CMP R0,#0x0
00000034 D054 BEQ L_10 ; T=0x000000E0
73: }
00000036 L_12:
76: if(Key.PressedTime>100) //按键时间超过一秒，长按键码
00000036 4800 LDR R0,=Key + 0xC ; Key+12
00000038 6800 LDR R0,[R0,#0x0] ; Key+12
0000003A 2864 CMP R0,#0x64
0000003C D905 BLS L_14 ; T=0x0000004A
78: Key.Value=Key.OldValue+0x80; //长按键码等于普通按键码加0x80
0000003E 4800 LDR R0,=Key + 0x4 ; Key+4
00000040 6801 LDR R1,[R0,#0x0] ; Key+4
ARM COMPILER V2.50a, KEYS 16/05/06 14:55:46 PAGE 5
00000042 3180 ADD R1,#0x80
00000044 4800 LDR R0,=Key ; Key
00000046 6001 STR R1,[R0,#0x0] ; Key
79: }
00000048 E007 B L_15 ; T=0x0000005A
0000004A L_14:
80: else if(Key.PressedTime>1)
0000004A 4800 LDR R0,=Key + 0xC ; Key+12
0000004C 6800 LDR R0,[R0,#0x0] ; Key+12
0000004E 2801 CMP R0,#0x1
00000050 D903 BLS L_15 ; T=0x0000005A
82: Key.Value=Key.OldValue; //按键值
00000052 4800 LDR R0,=Key + 0x4 ; Key+4
00000054 6801 LDR R1,[R0,#0x0] ; Key+4
00000056 4800 LDR R0,=Key ; Key
00000058 6001 STR R1,[R0,#0x0] ; Key
83: }
0000005A L_15:
84: Key.OldValue=0;
0000005A 2100 MOV R1,#0x0
0000005C 4800 LDR R0,=Key + 0x4 ; Key+4
0000005E 6001 STR R1,[R0,#0x0] ; Key+4
86: return;
00000060 E03E B L_10 ; T=0x000000E0
87: }
00000062 L_11:
90: Key.NewValue=0;
00000062 2100 MOV R1,#0x0
00000064 4800 LDR R0,=Key + 0x8 ; Key+8
00000066 6001 STR R1,[R0,#0x0] ; Key+8
91: if(!KEY1IN)Key.NewValue=KEY1; //KEY1键按下
00000068 4800 LDR R0,=0xFFFFF420
0000006A 6800 LDR R0,[R0,#0x0]
0000006C 4218 TST R0,R3
0000006E D102 BNE L_18 ; T=0x00000076
00000070 2201 MOV R2,#0x1
00000072 4800 LDR R0,=Key + 0x8 ; Key+8
00000074 6002 STR R2,[R0,#0x0] ; Key+8
00000076 L_18:
92: if(!KEY2IN)Key.NewValue=KEY2; //KEY2键按下
00000076 4800 LDR R0,=0xFFFFF420
00000078 6800 LDR R0,[R0,#0x0]
0000007A 2220 MOV R2,#0x20
0000007C 4210 TST R0,R2
0000007E D102 BNE L_19 ; T=0x00000086
00000080 2402 MOV R4,#0x2
00000082 4800 LDR R0,=Key + 0x8 ; Key+8
00000084 6004 STR R4,[R0,#0x0] ; Key+8
00000086 L_19:
93: if(!KEY3IN)Key.NewValue=KEY3; //KEY3键按下
00000086 4800 LDR R0,=0xFFFFF430
00000088 6800 LDR R0,[R0,#0x0]
0000008A 4218 TST R0,R3
0000008C D102 BNE L_20 ; T=0x00000094
0000008E 2303 MOV R3,#0x3
00000090 4800 LDR R0,=Key + 0x8 ; Key+8
00000092 6003 STR R3,[R0,#0x0] ; Key+8
00000094 L_20:
94: if(!KEY4IN)Key.NewValue=KEY4; //KEY4键按下
00000094 4800 LDR R0,=0xFFFFF430
00000096 6800 LDR R0,[R0,#0x0]
00000098 4210 TST R0,R2
0000009A D102 BNE L_21 ; T=0x000000A2
0000009C 2204 MOV R2,#0x4
0000009E 4800 LDR R0,=Key + 0x8 ; Key+8
000000A0 6002 STR R2,[R0,#0x0] ; Key+8
ARM COMPILER V2.50a, KEYS 16/05/06 14:55:46 PAGE 6
000000A2 L_21:
96: if(Key.NewValue==Key.OldValue) //如果连续两次扫描到一样的键，即按键按下长于10ms
000000A2 4800 LDR R0,=Key + 0x4 ; Key+4
000000A4 6802 LDR R2,[R0,#0x0] ; Key+4
000000A6 4800 LDR R0,=Key + 0x8 ; Key+8
000000A8 6800 LDR R0,[R0,#0x0] ; Key+8
000000AA 4290 CMP R0,R2
000000AC D112 BNE L_22 ; T=0x000000D4
98: if(Key.PressedTime>200) //如果按键按下超过2s
000000AE 4800 LDR R0,=Key + 0xC ; Key+12
000000B0 6800 LDR R0,[R0,#0x0] ; Key+12
000000B2 28C8 CMP R0,#0xC8
000000B4 D909 BLS L_23 ; T=0x000000CA
100: Key.PressedTime-=4; //则自动按键。相当于每隔50ms按一次
000000B6 4800 LDR R0,=Key + 0xC ; Key+12
000000B8 6802 LDR R2,[R0,#0x0] ; Key+12
000000BA 3A04 SUB R2,#0x4
000000BC 4800 LDR R0,=Key + 0xC ; Key+12
000000BE 6002 STR R2,[R0,#0x0] ; Key+12
101: Key.Value=Key.NewValue;
000000C0 4800 LDR R0,=Key + 0x8 ; Key+8
000000C2 6802 LDR R2,[R0,#0x0] ; Key+8
000000C4 4800 LDR R0,=Key ; Key
000000C6 6002 STR R2,[R0,#0x0] ; Key
102: return;
000000C8 E00A B L_10 ; T=0x000000E0
103: }
000000CA L_23:
106: Key.PressedTime++; //按键按下计时加一
000000CA 4800 LDR R0,=Key + 0xC ; Key+12
000000CC 6802 LDR R2,[R0,#0x0] ; Key+12
000000CE 3201 ADD R2,#0x1
000000D0 6002 STR R2,[R0,#0x0] ; Key+12
108: }
000000D2 E001 B L_25 ; T=0x000000D8
000000D4 L_22:
111: Key.PressedTime=0; //如果本次按下跟上次按下不一样，则按键按下时间清零
000000D4 4800 LDR R0,=Key + 0xC ; Key+12
000000D6 6001 STR R1,[R0,#0x0] ; Key+12
112: }
000000D8 L_25:
113: Key.OldValue=Key.NewValue; //保存本次按键值
000000D8 4800 LDR R0,=Key + 0x8 ; Key+8
000000DA 6801 LDR R1,[R0,#0x0] ; Key+8
000000DC 4800 LDR R0,=Key + 0x4 ; Key+4
000000DE 6001 STR R1,[R0,#0x0] ; Key+4
115: }
000000E0 L_10:
000000E0 BC10 POP {R4}
000000E2 4770 BX R14
000000E4 ENDP ; 'ScanKey?T'
Module Information Static
----------------------------------
code size = ------
data size = 16
const size = ------
End of Module Information.
ARM COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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