OLED IIC四脚0.96寸 51单片机汇编程序分享仿真+实物测试 -

SCL BIT P1.0 ;引脚定义
SDA BIT P1.1
ORG 00H
JMP START ;跳转到主函数
ORG 100H
START:
MOV SP,#30H ;设置堆栈指针
ACALL INIT ;初始化OLED
MAIN:
;显示白屏
MOV A,#0FFH
ACALL FILL
;设置字符串显示
MOV R1,#10 ;字符串列起始位置，单位：像素
MOV R0,#2H ;字符串行起始位置，单位：行（共0-7，8行）
MOV R2,#72 ;字符串长度，单位：像素
MOV DPTR,#PIC ;传入图像地址
ACALL SHOW
;暂停程序
JMP $
INIT:
;Write_IIC_Command(0xAE); //display off
MOV A,#0AEH
ACALL TRANS_CMD
;Write_IIC_Command(0x20); //Set Memory Addressing Mode
MOV A,#20H
ACALL TRANS_CMD
;Write_IIC_Command(0x10); //00,Horizontal Addressing Mode;01,Vertical Addressing Mode;10,Page Addressing Mode (RESET);11,Invalid
MOV A,#10H
ACALL TRANS_CMD
;Write_IIC_Command(0xb0); //Set Page Start Address for Page Addressing Mode,0-7
MOV A,#0B0H
ACALL TRANS_CMD
;Write_IIC_Command(0xc8); //Set COM Output Scan Direction
MOV A,#0C8H
ACALL TRANS_CMD
;Write_IIC_Command(0x00);//---set low column address
MOV A,#00H
ACALL TRANS_CMD
;Write_IIC_Command(0x10);//---set high column address
MOV A,#10H
ACALL TRANS_CMD
;Write_IIC_Command(0x40);//--set start line address
MOV A,#40H
ACALL TRANS_CMD
;Write_IIC_Command(0x81);//--set contrast control register
MOV A,#81H
ACALL TRANS_CMD
;Write_IIC_Command(0xdf);
MOV A,#0DFH
ACALL TRANS_CMD
;Write_IIC_Command(0xa1);//--set segment re-map 0 to 127
MOV A,#0A1H
ACALL TRANS_CMD
;Write_IIC_Command(0xa6);//--set normal display
MOV A,#0A6H
ACALL TRANS_CMD
;Write_IIC_Command(0xa8);//--set multiplex ratio(1 to 64)
MOV A,#0A8H
ACALL TRANS_CMD
;Write_IIC_Command(0x3F);//
MOV A,#3FH
ACALL TRANS_CMD
;Write_IIC_Command(0xa4);//0xa4,Output follows RAM content;0xa5,Output ignores RAM content
MOV A,#0A4H
ACALL TRANS_CMD
;Write_IIC_Command(0xd3);//-set display offset
MOV A,#0D3H
ACALL TRANS_CMD
;Write_IIC_Command(0x00);//-not offset
MOV A,#00H
ACALL TRANS_CMD
;Write_IIC_Command(0xd5);//--set display clock divide ratio/oscillator frequency
MOV A,#0D5H
ACALL TRANS_CMD
;Write_IIC_Command(0xf0);//--set divide ratio
MOV A,#0F0H
ACALL TRANS_CMD
;Write_IIC_Command(0xd9);//--set pre-charge period
MOV A,#0D9H
ACALL TRANS_CMD
;Write_IIC_Command(0x22); //
MOV A,#22H
ACALL TRANS_CMD
;Write_IIC_Command(0xda);//--set com pins hardware configuration
MOV A,#0DAH
ACALL TRANS_CMD
;Write_IIC_Command(0x12);
MOV A,#12H
ACALL TRANS_CMD
;Write_IIC_Command(0xdb);//--set vcomh
MOV A,#0DBH
ACALL TRANS_CMD
;Write_IIC_Command(0x20);//0x20,0.77xVcc
MOV A,#20H
ACALL TRANS_CMD
;Write_IIC_Command(0x8d);//--set DC-DC enable
MOV A,#8DH
ACALL TRANS_CMD
;Write_IIC_Command(0x14);//
MOV A,#14H
ACALL TRANS_CMD
;Write_IIC_Command(0xaf);//--turn on oled panel
MOV A,#0AFH
ACALL TRANS_CMD
RET
;开始传输
START_TRANS:
SETB SCL
SETB SDA
CLR SDA
CLR SCL
RET
;结束传输
CLOSE_TRANS:
CLR SCL
CLR SDA
SETB SCL
SETB SDA
CLR SDA
CLR SCL
RET
;传输，影响R0，ACC寄存器，将ACC的数据按位传输
TRANS:
MOV R0,#8H
TRA1:
RLC A
MOV SDA,C
SETB SCL
CLR SCL
DJNZ R0,TRA1
SETB SDA
SETB SCL
CLR SCL
RET
;传输指令，将ACC的数据作为指令传出
TRANS_CMD:
PUSH ACC
ACALL START_TRANS
MOV A,#78H
ACALL TRANS
MOV A,#00H
ACALL TRANS
POP ACC
ACALL TRANS
ACALL CLOSE_TRANS
RET
;传输数据，将ACC的数据作为数据传出
TRANS_DATA:
PUSH ACC
ACALL START_TRANS
MOV A,#78H
ACALL TRANS
MOV A,#40H
ACALL TRANS
POP ACC
ACALL TRANS
ACALL CLOSE_TRANS
RET
;将ACC的数据刷屏，影响ACC，R0，R1，R2寄存器
FILL:
PUSH ACC
MOV A,#8H
FILL1:
MOV R0,#0B0H
DEC A
MOV R2,A
ADD A,R0
ACALL TRANS_CMD
MOV A,#0H
ACALL TRANS_CMD
MOV A,#10H
ACALL TRANS_CMD
MOV R1,#128
FILL2:
POP ACC
PUSH ACC
ACALL TRANS_DATA
DJNZ R1,FILL2
MOV A,R2
JNZ FILL1
DEC SP
RET
;将指定的图像显示到指定位置，R0：指定行，R1：指定列，R2：图像长度，DPTR：图像位置
SHOW:
DEC R0
MOV A,#0B0H
ADD A,R0
ACALL TRANS_CMD
MOV A,R1
ANL A,#0FH
ACALL TRANS_CMD
MOV A,R1
ANL A,#0F0H
SETB C
RRC A
RRC A
RRC A
RRC A
ACALL TRANS_CMD
SHOW1:
CLR A
MOVC A,@A+DPTR
ACALL TRANS_DATA
INC DPTR
DJNZ R2,SHOW1
RET
;图像
PIC:
DB 2EH ,4AH ,4AH ,32H ,00H ,00H ,00H ,00H;"5",0
DB 00H ,42H ,7EH ,40H ,00H ,00H ,00H ,00H;"1",1
DB 42H ,7EH ,10H ,52H ,7EH ,42H ,00H ,00H;"H",2
DB 42H ,7EH ,52H ,52H ,46H ,20H ,00H ,00H;"E",3
DB 42H ,7EH ,42H ,00H ,00H ,00H ,00H ,00H;"I",4
DB 00H ,40H ,00H ,00H ,00H ,00H ,00H ,00H;".",5
DB 18H ,24H ,42H ,42H ,24H ,00H ,00H ,00H;"C",6
DB 18H ,24H ,42H ,42H ,24H ,18H ,00H ,00H;"O",7
DB 42H ,7EH ,0CH ,70H ,10H ,4CH ,7EH ,42H;"M",8
END

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