[汇总]STC12C5A系列双串口51汇编程序集锦

[汇总]STC12C5A系列双串口51汇编程序集锦 STC12C5A系列双串口51汇编程序集锦 ;************STC12C5A32S2********************************** **************** ;********************************************************** **** ;================COM1接收子程序====以'0A'为结束码============= COM1_R: PUSH ACC PUSH PSW MOV DP, #00H JNB RI, COM1_RE MOV A,SBUF CJNE A, #0AH, COM1_R2 ;不等转移 '0A'为结束码 MOVX @DPTR, A MOV DPTR_BL, DPL MOV DPTR_BH, DPH MOV DPTR, #0100H ;---------------------判断结束后，从地址#0100H提取数据从串口传出---------- COM1_R1: MOVX A, @DPTR CALL COM1_S INC DPTR MOV A, DPH CJNE A, DPTR_BH, COM1_R1 ;不等转移 MOV A, DPL CJNE A, DPTR_BL, COM1_R1 ;不等转移 MOV DPTR, #0100H AJMP COM1_RE ;---------------------------------------------------------- ---- COM1_R2: MOVX @DPTR, A ;存储在DPTR指定的地址，开始地址为#0100H COM1_R3: INC DPTR COM1_RE: CLR RI POP PSW POP ACC RETI ;=================COM1发送子程序 ============================================== COM1_S: MOV SBUF, A COM1_SW: JBC TI, COM1_SE CALL PUT_DOG AJMP COM1_SW COM1_SE: RET =========================================================== ================= ;=================COM2接收子程序====以'0A'为结束码======================= COM2_R: PUSH ACC PUSH PSW MOV DP, #01H MOV A, S2CON ANL A, #01H CJNE A, #01H, COM2_RE ;不等转移 MOV A, S2CON ANL A, #0FEH MOV S2CON, A MOV 54H, S2BUF MOV A, S2BUF CJNE A, #0AH, COM2_R2 ;不等转移 MOVX @DPTR, A MOV DPTR1_BL, DPL MOV DPTR1_BH, DPH MOV DPTR, #0280H ;地址为#0280H COM2_R1: MOVX A, @DPTR MOV 54H, A CALL COM2_S INC DPTR MOV A, DPH CJNE A, DPTR1_BH, COM2_R1 ;不等转移 MOV A, DPL CJNE A, DPTR1_BL, COM2_R1 ;不等转移 MOV DPTR, #0280H AJMP COM2_RE COM2_R2: MOVX @DPTR, A MOV A, DPH CJNE A, #03H, COM2_R3 ;不等转移 MOV A, DPL CJNE A, #0FFH, COM2_R3 ;不等转移 AJMP COM2_RE COM2_R3: INC DPTR COM2_RE: MOV A, S2CON ANL A, #0FDH MOV S2CON, A POP PSW POP ACC RETI ;===================COM2发送子程序============================================ COM2_S: MOV IE2, #00H MOV A, S2CON ANL A, #0FDH MOV S2CON, A MOV S2BUF, 54H ;---------------------------------------------------------- ---- COM2_SW:MOV A, S2CON ANL A, #02H CJNE A, #02H, COM2_SW MOV A, S2CON ANL A, #0FDH MOV S2CON, A MOV IE2, #01H RET ;********************************************************** **** ;********************************************************** **** ;************************************************************** -------------串口 1和2初始化设置------------- ;=============================================================== COM1_SET:MOV SCON, #50H ;设置成串口1方式 ;ORL PCON,#80H ;SMOD=1 MOV BRT, #RELOAD_M1 MOV AUXR, #11H SETB ES ;以上完成通讯初始化设置 SETB EA ;允许T0、T1中断 RET ;=============================================================== COM2_SET:MOV S2CON, #50H ;S2SM0,S2SM1,S2SM2,S2REN,S2TB8,S2RB8,S2TI,S2RI MOV BRT, #RELOAD_M2 MOV AUXR, #11H ;SETB ES2 ;X,X,X,X,SMOD2,X,ESPI,ES2 19 SMOD2=1 MOV IE2, #01H SETB EA RET ;=============================================================== ;************************************************************** ;********************************************************** **** ;*********************主程序 ******************************* ;********************************************************** **** MAIN: BEGIN_SET: ;---------------------串口寄存器设置 ----------------------------------------- DP EQU 0A2H ;DPTR=00,DPTR1=01 S2CON EQU 09AH ;S2SM0,S2SM1,S2SM2,S2REN,S2TB8,SRB8,S2TI,S2RI S2TI BIT 09BH S2RI BIT 09AH IE2 EQU 0AFH ;X,X,X,X,X,X,ESPI,ES2 ES2 BIT 0AFH S2BUF EQU 09BH AUXR EQU 08EH BRT EQU 09CH RELOAD_M1 EQU 0FDH ;,SMOD=0,fd=9600 fa=4800 fa=2400 RELOAD_M2 EQU 0FDH ;,SMOD=0,fd=9600 fa=4800 fa=2400 ;---------------------------------------------------------- ---- MOV DP, #00H CALL COM1_SET CALL COM2_SET BEGIN: AJMP BEGIN RET ;-------------------------------------------------------------- ;************************************************************** ;************************************************************** ;**************************************************************