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研发客服用STC的MCU的IO方式控制74HC595驱动8位数码管。
红外接收程序。适用于市场上用量最大的NEC编码。查询方式， Timer0十六位自动重装, 100us
应用层查询 B_IR_Press标志为,则已接收到一个键码放在IR_code中,
数码管左起4位显示用户码, 最右边两位显示数据, 均为十六进制.
Fosc_KHZ EQU 22118 ;22118KHZ, 用户只需要改动这个值以适应自己实际的频率
STACK_POIRTER EQU 0D0H ;堆栈开始地址
Timer0_Reload EQU (65536 - (Fosc_KHZ+5)/10) ; Timer 0 中断频率, 10000次/秒
DIS_DOT EQU 020H
DIS_BLACK EQU 010H
DIS_ EQU 011H
AUXR DATA 08EH
P4 DATA 0C0H
P5 DATA 0C8H
P0M1 DATA 0x93 ;
P0M0 DATA 0x94 ;
P1M1 DATA 0x91 ;
P1M0 DATA 0x92 ;
P2M1 DATA 0x95 ;
P2M0 DATA 0x96 ;
P3M1 DATA 0xB1 ;
P3M0 DATA 0xB2 ;
P4M1 DATA 0xB3 ;
P4M0 DATA 0xB4 ;
P5M1 DATA 0xC9 ;
P5M0 DATA 0xCA ;
P6M1 DATA 0xCB ;
P6M0 DATA 0xCC ;
P7M1 DATA 0xE1 ;
P7M0 DATA 0xE2 ;
P_HC595_SER BIT P4.0 ; //pin 14 SER data input
P_HC595_RCLK BIT P5.4 ; //pin 12 RCLk store (latch) clock
P_HC595_SRCLK BIT P4.3 ; //pin 11 SRCLK Shift data clock
Flag0 DATA 20H
B_1ms BIT Flag0.0 ; 1ms标志
LED8 DATA 30H ; 显示缓冲 30H ~ 37H
display_index DATA 38H ; 显示位索引
cnt_1ms DATA 39H ;
;红外接收程序变量声明
P_IR_RX BIT P3.6 ;定义红外接收输入IO口
P_IR_RX_temp BIT Flag0.1 ;用户不可操作, Last sample
B_IR_Sync BIT Flag0.2 ;用户不可操作, 已收到同步标志
IR_SampleCnt DATA 3AH ;用户不可操作, 采样计数
IR_BitCnt DATA 3BH ;用户不可操作, 编码位数
IR_UserH DATA 3CH ;用户不可操作, 用户码(地址)高字节
IR_UserL DATA 3DH ;用户不可操作, 用户码(地址)低字节
IR_data DATA 3EH ;用户不可操作, 数据原码
IR_DataShit DATA 3FH ;用户不可操作, 数据移位
B_IR_Press BIT Flag0.3 ;用户使用, 按键动作发生
IR_code DATA 40H ;用户使用, 红外键码
UserCodeH DATA 41H ;用户使用, 用户码高字节
UserCodeL DATA 42H ;用户使用, 用户码低字节
ORG 0000H ;reset
LJMP F_Main
ORG 000BH ;1 Timer0 interrupt
LJMP F_Timer0_Interrupt
ORG 0100H ;reset
F_Main:
CLR A
MOV P0M1, A ;设置为准双向口
MOV P0M0, A
MOV P1M1, A ;设置为准双向口
MOV P1M0, A
MOV P2M1, A ;设置为准双向口
MOV P2M0, A
MOV P3M1, A ;设置为准双向口
MOV P3M0, A
MOV P4M1, A ;设置为准双向口
MOV P4M0, A
MOV P5M1, A ;设置为准双向口
MOV P5M0, A
MOV P6M1, A ;设置为准双向口
MOV P6M0, A
MOV P7M1, A ;设置为准双向口
MOV P7M0, A
MOV SP, #STACK_POIRTER
MOV PSW, #0 ;选择第0组R0~R7
USING 0 ;选择第0组R0~R7
MOV display_index, #0
MOV R0, #LED8
MOV R2, #8
L_ClearLoop:
MOV @R0, #DIS_
INC R0
DJNZ R2, L_ClearLoop
MOV R0, #LED8+4
MOV @R0, #DIS_BLACK ;上电消隐
INC R0
MOV @R0, #DIS_BLACK ;上电消隐
CLR TR0
ORL AUXR, #(1 SHL 7) ; Timer0_1T();
ANL TMOD, #NOT 04H ; Timer0_AsTimer();
ANL TMOD, #NOT 03H ; Timer0_16bitAutoReload();
MOV TH0, #Timer0_Reload / 256 ;Timer0_Load(Timer0_Reload);
MOV TL0, #Timer0_Reload MOD 256
SETB ET0 ; Timer0_InterruptEnable();
SETB TR0 ; Timer0_Run();
SETB EA ; 打开总中断
MOV cnt_1ms, #10
L_Main_Loop:
JNB B_1ms, L_Main_Loop ;1ms未到
CLR B_1ms
JNB B_IR_Press, L_Main_Loop ;未检测到收到红外键码
CLR B_IR_Press ;检测到收到红外键码
MOV A, UserCodeH
SWAP A
ANL A, #0FH
MOV LED8+0, A ;用户码高字节的高半字节
MOV A, UserCodeH
ANL A, #0FH
MOV LED8+1, A ;用户码高字节的低半字节
MOV A, UserCodeL
SWAP A
ANL A, #0FH
MOV LED8+2, A ;用户码低字节的高半字节
MOV A, UserCodeL
ANL A, #0FH
MOV LED8+3, A ;用户码低字节的低半字节
MOV A, IR_code
SWAP A
ANL A, #0FH
MOV LED8+6, A ;遥控数据的高半字节
MOV A, IR_code
ANL A, #0FH
MOV LED8+7, A ;遥控数据的低半字节
LJMP L_Main_Loop
T_Display: ;标准字库
; 0 1 2 3 4 5 6 7 8 9 A B C D E F
DB 03FH,006H,05BH,04FH,066H,06DH,07DH,007H,07FH,06FH,077H,07CH,039H,05EH,079H,071H
; black - H J K L N o P U t G Q r M y
DB 000H,040H,076H,01EH,070H,038H,037H,05CH,073H,03EH,078H,03dH,067H,050H,037H,06EH
; 0. 1. 2. 3. 4. 5. 6. 7. 8. 9. -1
DB 0BFH,086H,0DBH,0CFH,0E6H,0EDH,0FDH,087H,0FFH,0EFH,046H
T_COM:
DB 001H,002H,004H,008H,010H,020H,040H,080H ; 位码
F_Send_595:
PUSH AR2 ;R2入栈
MOV R2, #8
L_Send_595_Loop:
RLC A
MOV P_HC595_SER,C
SETB P_HC595_SRCLK
CLR P_HC595_SRCLK
DJNZ R2, L_Send_595_Loop
POP AR2 ;R2出栈
RET
F_DisplayScan:
PUSH DPH ;DPH入栈
PUSH DPL ;DPL入栈
PUSH AR0 ;R0 入栈
MOV DPTR, #T_COM
MOV A, display_index
MOVC A, @A+DPTR
CPL A
LCALL F_Send_595 ;输出位码
MOV DPTR, #T_Display
MOV A, display_index
ADD A, #LED8
MOV R0, A
MOV A, @R0
MOVC A, @A+DPTR
LCALL F_Send_595 ;输出段码
SETB P_HC595_RCLK
CLR P_HC595_RCLK ; 锁存输出数据
INC display_index
MOV A, display_index
ANL A, #0F8H ; if(display_index >= 8)
JZ L_QuitDisplayScan
MOV display_index, #0; ;8位结束回0
L_QuitDisplayScan:
POP AR0 ;R0 出栈
POP DPL ;DPL出栈
POP DPH ;DPH出栈
RET
F_Timer0_Interrupt: ;Timer0 1ms中断函数
PUSH PSW ;PSW入栈
PUSH ACC ;ACC入栈
PUSH AR7 ;SampleTime
LCALL F_IR_RX_NEC
DJNZ cnt_1ms, L_Quit_1ms
MOV cnt_1ms, #10
LCALL F_DisplayScan ; 1ms扫描显示一位
SETB B_1ms ; 1ms标志
L_Quit_1ms:
POP AR7
POP ACC ;ACC出栈
POP PSW ;PSW出栈
RETI
;this programme is used for Receive IR Remote (NEC Code).
;data format: Synchro, AddressH, AddressL, data, /data, (total 32 bit).
;send a frame(85ms), pause 23ms, send synchro of continue frame, pause 94ms
;data rate: 108ms/Frame
;Synchro: low=9ms, high=4.5 / 2.25ms, low=0.5626ms
;Bit0: high=0.5626ms, low=0.5626ms
;Bit1: high=1.6879ms, low=0.5626ms
;frame rate = 108ms ( pause 23 ms or 96 ms)
;红外采样时间宏定义, 不要随意修改
D_IR_sample EQU 100 ;查询时间间隔, 100us, 红外接收要求在60us~250us之间
D_IR_SYNC_MAX EQU (15000/D_IR_sample) ;SYNC max time
D_IR_SYNC_MIN EQU (9700 /D_IR_sample) ;SYNC min time
D_IR_SYNC_DIVIDE EQU (12375/D_IR_sample) ;decide data 0 or 1
D_IR_DATA_MAX EQU (3000 /D_IR_sample) ;data max time
D_IR_DATA_MIN EQU (600 /D_IR_sample) ;data min time
D_IR_DATA_DIVIDE EQU (1687 /D_IR_sample) ;decide data 0 or 1
D_IR_BIT_NUMBER EQU 32 ;bit number
F_IR_RX_NEC:
INC IR_SampleCnt ;Sample + 1
MOV C, P_IR_RX_temp ;Save Last sample status
MOV F0, C
MOV C, P_IR_RX ;Read current status
MOV P_IR_RX_temp, C
JNB F0, L_QuitIrRx ;Pre-sample is high
JB P_IR_RX_temp, L_QuitIrRx ;and current sample is low, so is fall edge
MOV R7, IR_SampleCnt ;get the sample time
MOV IR_SampleCnt, #0 ;Clear the sample counter
MOV A, R7 ; if(SampleTime > D_IR_SYNC_MAX) B_IR_Sync = 0
SETB C
SUBB A, #D_IR_SYNC_MAX
JC L_IR_RX_1
CLR B_IR_Sync ;large than the Maxim SYNC time, then error
RET
L_IR_RX_1:
MOV A, R7 ; else if(SampleTime >= D_IR_SYNC_MIN)
CLR C
SUBB A, #D_IR_SYNC_MIN
JC L_IR_RX_2
MOV A, R7 ; else if(SampleTime >= D_IR_SYNC_MIN)
SUBB A, #D_IR_SYNC_DIVIDE
JC L_QuitIrRx
SETB B_IR_Sync ;has received SYNC
MOV IR_BitCnt, #D_IR_BIT_NUMBER ;Load bit number
RET
L_IR_RX_2:
JNB B_IR_Sync, L_QuitIrRx ;else if(B_IR_Sync), has received SYNC
MOV A, R7 ; if(SampleTime > D_IR_DATA_MAX) B_IR_Sync = 0, data samlpe time too large
SETB C
SUBB A, #D_IR_DATA_MAX
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