📄 keys.lst
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*** CODE SEGMENT '?PR?ScanKey?T?KEYS':
64: 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
00000000 4800 LDR R0,=Key ; Key
00000002 6800 LDR R0,[R0,#0x0] ; Key
00000004 2800 CMP R0,#0x0
00000006 D000 BNE $+4
00000008 E088 B L_10 ; T=0x0000011C
66: if(KEY1IN && KEY2IN && KEY3IN && KEY4IN && KEY5IN && KEY6IN) //如果输入全部是高，则按键处于释放状态
0000000C 4800 LDR R0,=0xE0028000
0000000E 6800 LDR R0,[R0,#0x0]
00000010 4800 LDR R2,=0x10000
00000012 4210 TST R0,R2
00000014 D031 BEQ L_11 ; T=0x0000007A
00000016 4800 LDR R0,=0xE0028000
00000018 6800 LDR R0,[R0,#0x0]
0000001A 4800 LDR R1,=0x20000
0000001C 4208 TST R0,R1
0000001E D02C BEQ L_11 ; T=0x0000007A
00000020 4800 LDR R0,=0xE0028000
00000022 6800 LDR R0,[R0,#0x0]
00000024 4800 LDR R1,=0x40000
00000026 4208 TST R0,R1
00000028 D027 BEQ L_11 ; T=0x0000007A
0000002A 4800 LDR R0,=0xE0028000
0000002C 6800 LDR R0,[R0,#0x0]
0000002E 4800 LDR R1,=0x80000
00000030 4208 TST R0,R1
00000032 D022 BEQ L_11 ; T=0x0000007A
00000034 4800 LDR R0,=0xE0028000
00000036 6800 LDR R0,[R0,#0x0]
00000038 4800 LDR R1,=0x100000
0000003A 4208 TST R0,R1
0000003C D01D BEQ L_11 ; T=0x0000007A
0000003E 4800 LDR R0,=0xE0028000
00000040 6800 LDR R0,[R0,#0x0]
00000042 4800 LDR R1,=0x200000
00000044 4208 TST R0,R1
00000046 D018 BEQ L_11 ; T=0x0000007A
68: if(!(Key.OldValue)) //如果上次无按键按下
00000048 4800 LDR R0,=Key + 0x4 ; Key+4
0000004A 6800 LDR R0,[R0,#0x0] ; Key+4
0000004C 2800 CMP R0,#0x0
0000004E D065 BEQ L_10 ; T=0x0000011C
71: }
00000050 L_12:
74: if(Key.PressedTime>100) //按键时间超过一秒，长按键码
00000050 4800 LDR R0,=Key + 0xC ; Key+12
00000052 6800 LDR R0,[R0,#0x0] ; Key+12
00000054 2864 CMP R0,#0x64
00000056 D904 BLS L_14 ; T=0x00000062
76: Key.Value=Key.OldValue+0x80; //长按键码等于普通按键码加0x80
00000058 4800 LDR R0,=Key + 0x4 ; Key+4
0000005A 6801 LDR R1,[R0,#0x0] ; Key+4
0000005C 3180 ADD R1,#0x80
0000005E 4800 LDR R0,=Key ; Key
00000060 6001 STR R1,[R0,#0x0] ; Key
77: }
00000062 E006 B L_15 ; T=0x00000072
00000064 L_14:
78: else if(Key.PressedTime>1)
00000064 4800 LDR R0,=Key + 0xC ; Key+12
00000066 6800 LDR R0,[R0,#0x0] ; Key+12
00000068 2801 CMP R0,#0x1
ARM COMPILER V2.50a, KEYS 25/08/06 23:22:56 PAGE 5
0000006A D902 BLS L_15 ; T=0x00000072
80: Key.Value=Key.OldValue; //按键值
0000006C 4800 LDR R0,=Key + 0x4 ; Key+4
0000006E 6801 LDR R1,[R0,#0x0] ; Key+4
00000070 4800 LDR R0,=Key ; Key
00000072 6001 STR R1,[R0,#0x0] ; Key
81: }
00000074 L_15:
82: Key.OldValue=0;
00000074 2100 MOV R1,#0x0
00000076 4800 LDR R0,=Key + 0x4 ; Key+4
00000078 6001 STR R1,[R0,#0x0] ; Key+4
84: return;
0000007A E04F B L_10 ; T=0x0000011C
85: }
0000007C L_11:
88: Key.NewValue=0;
0000007C 2100 MOV R1,#0x0
0000007E 4800 LDR R0,=Key + 0x8 ; Key+8
00000080 6001 STR R1,[R0,#0x0] ; Key+8
89: if(!KEY1IN)Key.NewValue=KEY1; //KEY1键按下
00000082 4800 LDR R0,=0xE0028000
00000084 6800 LDR R0,[R0,#0x0]
00000086 4210 TST R0,R2
00000088 D101 BNE L_18 ; T=0x0000008E
0000008A 2201 MOV R2,#0x1
0000008C 4800 LDR R0,=Key + 0x8 ; Key+8
0000008E 6002 STR R2,[R0,#0x0] ; Key+8
00000090 L_18:
90: if(!KEY2IN)Key.NewValue=KEY2; //KEY2键按下
00000090 4800 LDR R0,=0xE0028000
00000092 6800 LDR R0,[R0,#0x0]
00000094 4800 LDR R2,=0x20000
00000096 4210 TST R0,R2
00000098 D101 BNE L_19 ; T=0x0000009E
0000009A 2202 MOV R2,#0x2
0000009C 4800 LDR R0,=Key + 0x8 ; Key+8
0000009E 6002 STR R2,[R0,#0x0] ; Key+8
000000A0 L_19:
91: if(!KEY3IN)Key.NewValue=KEY3; //KEY3键按下
000000A0 4800 LDR R0,=0xE0028000
000000A2 6800 LDR R0,[R0,#0x0]
000000A4 4800 LDR R2,=0x40000
000000A6 4210 TST R0,R2
000000A8 D101 BNE L_20 ; T=0x000000AE
000000AA 2203 MOV R2,#0x3
000000AC 4800 LDR R0,=Key + 0x8 ; Key+8
000000AE 6002 STR R2,[R0,#0x0] ; Key+8
000000B0 L_20:
92: if(!KEY4IN)Key.NewValue=KEY4; //KEY4键按下
000000B0 4800 LDR R0,=0xE0028000
000000B2 6800 LDR R0,[R0,#0x0]
000000B4 4800 LDR R2,=0x80000
000000B6 4210 TST R0,R2
000000B8 D101 BNE L_21 ; T=0x000000BE
000000BA 2204 MOV R2,#0x4
000000BC 4800 LDR R0,=Key + 0x8 ; Key+8
000000BE 6002 STR R2,[R0,#0x0] ; Key+8
000000C0 L_21:
93: if(!KEY5IN)Key.NewValue=KEY5; //KEY5键按下
000000C0 4800 LDR R0,=0xE0028000
000000C2 6800 LDR R0,[R0,#0x0]
000000C4 4800 LDR R2,=0x100000
000000C6 4210 TST R0,R2
000000C8 D101 BNE L_22 ; T=0x000000CE
000000CA 2205 MOV R2,#0x5
ARM COMPILER V2.50a, KEYS 25/08/06 23:22:56 PAGE 6
000000CC 4800 LDR R0,=Key + 0x8 ; Key+8
000000CE 6002 STR R2,[R0,#0x0] ; Key+8
000000D0 L_22:
94: if(!KEY6IN)Key.NewValue=KEY6; //KEY6键按下
000000D0 4800 LDR R0,=0xE0028000
000000D2 6800 LDR R0,[R0,#0x0]
000000D4 4800 LDR R2,=0x200000
000000D6 4210 TST R0,R2
000000D8 D101 BNE L_23 ; T=0x000000DE
000000DA 2206 MOV R2,#0x6
000000DC 4800 LDR R0,=Key + 0x8 ; Key+8
000000DE 6002 STR R2,[R0,#0x0] ; Key+8
000000E0 L_23:
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
000000E0 4800 LDR R0,=Key + 0x4 ; Key+4
000000E2 6802 LDR R2,[R0,#0x0] ; Key+4
000000E4 4800 LDR R0,=Key + 0x8 ; Key+8
000000E6 6800 LDR R0,[R0,#0x0] ; Key+8
000000E8 4290 CMP R0,R2
000000EA D111 BNE L_24 ; T=0x00000110
98: if(Key.PressedTime>200) //如果按键按下超过2s
000000EC 4800 LDR R0,=Key + 0xC ; Key+12
000000EE 6800 LDR R0,[R0,#0x0] ; Key+12
000000F0 28C8 CMP R0,#0xC8
000000F2 D908 BLS L_25 ; T=0x00000106
100: Key.PressedTime-=4; //则自动按键。相当于每隔50ms按一次
000000F4 4800 LDR R0,=Key + 0xC ; Key+12
000000F6 6802 LDR R2,[R0,#0x0] ; Key+12
000000F8 3A04 SUB R2,#0x4
000000FA 4800 LDR R0,=Key + 0xC ; Key+12
000000FC 6002 STR R2,[R0,#0x0] ; Key+12
101: Key.Value=Key.NewValue;
000000FE 4800 LDR R0,=Key + 0x8 ; Key+8
00000100 6802 LDR R2,[R0,#0x0] ; Key+8
00000102 4800 LDR R0,=Key ; Key
00000104 6002 STR R2,[R0,#0x0] ; Key
102: return;
00000106 E009 B L_10 ; T=0x0000011C
103: }
00000108 L_25:
106: Key.PressedTime++; //按键按下计时加一
00000108 4800 LDR R0,=Key + 0xC ; Key+12
0000010A 6802 LDR R2,[R0,#0x0] ; Key+12
0000010C 3201 ADD R2,#0x1
0000010E 6002 STR R2,[R0,#0x0] ; Key+12
108: }
00000110 E000 B L_27 ; T=0x00000114
00000112 L_24:
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
00000112 4800 LDR R0,=Key + 0xC ; Key+12
00000114 6001 STR R1,[R0,#0x0] ; Key+12
112: }
00000116 L_27:
113: Key.OldValue=Key.NewValue; //保存本次按键值
00000116 4800 LDR R0,=Key + 0x8 ; Key+8
00000118 6801 LDR R1,[R0,#0x0] ; Key+8
0000011A 4800 LDR R0,=Key + 0x4 ; Key+4
0000011C 6001 STR R1,[R0,#0x0] ; Key+4
115: }
0000011E L_10:
0000011E 4770 BX R14
00000120 ENDP ; 'ScanKey?T'
Module Information Static
----------------------------------
code size = ------
ARM COMPILER V2.50a, KEYS 25/08/06 23:22:56 PAGE 7
data size = 16
const size = ------
End of Module Information.
ARM COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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