EM78P447
单片机控制1621的程序可以测试到1621的BZ脚输出的是2KHZ的方法,其它脚无反应,请大家给点建议
DISPLAY:
BC CS_HT1621 ;CS=0
CALL YSA ;延时
BS CS_HT1621 ;CS=1
CALL YSA
BC CS_HT1621 ;CS=0
CALL YSA
MOV A,@0X80 ;初始化
CALL SEND_BIT3_COMMAND ;发送100 ,命令模式
MOV A,@0B00011000 ;SYSTEM RC 256K
CALL SEND_BYTE_COMMAND
MOV A,@0B00101001 ;BIAS 1/3 4 COMMONS
CALL SEND_BYTE_COMMAND
MOV A,@0B00000001 ;SYS EN
CALL SEND_BYTE_COMMAND
MOV A,@0B00001001 ;TONE ON
CALL SEND_BYTE_COMMAND
MOV A,@0B01100000 ;TONE 2K
CALL SEND_BYTE_COMMAND
MOV A,@0B00000011 ;LCD ON
CALL SEND_BYTE_COMMAND
BS CS_HT1621
;***************************************************************
HT1621_CLR:
BC CS_HT1621
MOV A,@0XA0
CALL SEND_BIT3_COMMAND ;发送101 ,写模式
MOV A,@0X00
CALL SEND_1621ADDRESS ;发送6位地址
MOV A,@0X10
MOV FORLOOP,A
HT1621_CLR_LOOP1:
MOV A,@0XFF ;全写1
CALL SNED_WRITE_DATA
DJZ FORLOOP
JMP HT1621_CLR_LOOP1
BS CS_HT1621
NOP
RET
;******************************************************************
SEND_BIT3_COMMAND:
MOV XS2,A
MOV A,@0X03
MOV XS1,A
JMP SEND_TO_1621
SEND_BYTE_COMMAND:
MOV XS2,A
MOV A,@0X09
MOV XS1,A
JMP SEND_TO_1621
SEND_1621ADDRESS:
MOV XS2,A
MOV A,@0X06
MOV XS1,A
JMP SEND_TO_1621
SNED_WRITE_DATA:
MOV XS2,A
MOV A,@0X08
MOV XS1,A
JMP SEND_TO_1621
;******************************************************************
SEND_TO_1621:
BC PORT5,1 ;WR=0
JBS XS2,7
JMP DATA_0
BS PORT5,0 ;DATA=1
JMP DATA_1
DATA_0:
BC PORT5,0 ;DATA=0
DATA_1:
CALL YSA
BS PORT5,1 ;WR=1
CALL YSA
RLC XS2
DJZ XS1
JMP SEND_TO_1621
RET
;***************************************************************
YSA:
MOV A,@3 ;NOP for 3 times
MOV XS3,A
LOP1:
NOP
DJZ XS3
JMP LOP1
RET
