📄 st7920iccavrmega8.s
字号:
.module st7920iccavrmega8.c
.area data(ram, con, rel)
_AC_TABLE::
.blkb 2
.area idata
.byte 128,129
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 130,131
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 132,133
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 134,135
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 144,145
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 146,147
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 148,149
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 150,151
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 136,137
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 138,139
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 140,141
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 142,143
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 152,153
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 154,155
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 156,157
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 158,159
.area data(ram, con, rel)
.dbfile E:\AVR学习专区\AVR学习板\st7920iccavrmega8.c
.dbsym e AC_TABLE _AC_TABLE A[32:32]c
_str2::
.blkb 17
.area idata
.byte 187,182,211,173,185,226,193,217,'A,'V,'R,'L,'C,'D,33,33
.byte 0
.area data(ram, con, rel)
.dbfile E:\AVR学习专区\AVR学习板\st7920iccavrmega8.c
.dbsym e str2 _str2 A[17:17]c
_str1::
.blkb 65
.area idata
.byte 212,198,196,184,198,193,183,231,214,242,211,176,201,238,163,172
.byte 179,164,186,211,189,165,194,228,207,254,208,199,179,193,161,163
.byte 230,207,182,240,211,166,187,218,205,181,193,233,210,169,163,172
.byte 177,204,186,163,199,224,204,236,210,185,210,185,208,196,161,163
.byte 0
.area data(ram, con, rel)
.dbfile E:\AVR学习专区\AVR学习板\st7920iccavrmega8.c
.dbsym e str1 _str1 A[65:65]c
.area text(rom, con, rel)
.dbfile E:\AVR学习专区\AVR学习板\st7920iccavrmega8.c
.dbfunc e SendByte _SendByte fV
; i -> R20
; Dbyte -> R16
.even
_SendByte::
rcall push_gset1
.dbline -1
.dbline 41
; /****************************************************************************************
; LCM（DM12864M-带字库，ST7920控制芯片）mega8控制显示程序
;
; 程序功能：该程序是用AVR来控制对DM12864M
; 读写信号等的操作.
; 硬件连接：采用串行方式显示,分配PB6=SID，PB7=SCK，PB1=LCD_ON
; 三个I/O口分别作为LCM数据，时钟信号,背光开关
; 的控制。
; CS和/RESET直接接VCC;PSB直接接GND
; 作者：张国旗
; 2008年12月29号
; ****************************************************************************************/
; #include <iom8v.h>
; #include <macros.h>
; #include <stdio.h>
;
; #define LCDDDR DDRB
; #define LCDDDR_IN LCDDDR&=~BIT(PB6);
; #define LCDDDR_OUT LCDDDR|=BIT(PB1)|BIT(PB6)|BIT(PB7);
; /*===============================================================*/
; #define LCDCTL PORTB
; #define SID_ON LCDCTL |= BIT(PB6) //数据
; #define SID_OFF LCDCTL &= ~BIT(PB6)
; #define SCK_ON LCDCTL |= BIT(PB7) //时钟
; #define SCK_OFF LCDCTL &= ~BIT(PB7)
; #define LCD_ON LCDCTL |= BIT(PB1) //开启背光
; #define LCD_OFF LCDCTL &= ~BIT(PB1)
; //#define uchar unsigned char
; /***********************函数体部分*********************************/
; unsigned char AC_TABLE[]={
; 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,
; 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,
; 0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,
; 0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f,
; };
; unsigned char str2[]="欢迎光临AVRLCD!!";
; unsigned char str1[]="云母屏风烛影深，长河渐落晓星沉。嫦娥应悔偷灵药，碧海青天夜夜心。";
; unsigned char bmp1[];//先声明一下就可以把表放在函数后面啦，呵呵
; //=========发送一个字节程序=========
; void SendByte(unsigned char Dbyte)
; {
.dbline 43
; unsigned char i;
; for(i=0;i<8;i++)
clr R20
rjmp L5
L2:
.dbline 44
; {
.dbline 45
; if(Dbyte&0x80)SID_ON;
sbrs R16,7
rjmp L6
.dbline 45
sbi 0x18,6
rjmp L7
L6:
.dbline 46
; else SID_OFF;
cbi 0x18,6
L7:
.dbline 47
sbi 0x18,7
.dbline 48
cbi 0x18,7
.dbline 49
lsl R16
.dbline 50
L3:
.dbline 43
inc R20
L5:
.dbline 43
cpi R20,8
brlo L2
.dbline -2
L1:
rcall pop_gset1
.dbline 0 ; func end
ret
.dbsym r i 20 c
.dbsym r Dbyte 16 c
.dbend
.dbfunc e ReceiveByte _ReceiveByte fc
; temp2 -> R16
; temp1 -> R18
; i -> R20
.even
_ReceiveByte::
rcall push_gset1
.dbline -1
.dbline 54
; SCK_ON;
; SCK_OFF;
; Dbyte=Dbyte<<1;
; }
; }
; //接收一个字节程序((0xf0&temp1)+(0x0f&temp2))
; unsigned char ReceiveByte(void)
; {
.dbline 56
; unsigned char i,temp1,temp2;
; temp1=temp2=0;
clr R16
clr R18
.dbline 57
; for(i=0;i<8;i++)
clr R20
rjmp L12
L9:
.dbline 58
; {
.dbline 59
; LCDDDR_IN;
cbi 0x17,6
.dbline 59
.dbline 60
; temp1=temp1<<1;
lsl R18
.dbline 61
; if ((PINB&0x40)!=0)temp1++; //与端口设置有关，主要修改端口时修改此位
sbis 0x16,6
rjmp L13
.dbline 61
inc R18
L13:
.dbline 62
in R24,0x17
ori R24,194
out 0x17,R24
.dbline 62
.dbline 63
sbi 0x18,7
.dbline 64
cbi 0x18,7
.dbline 65
L10:
.dbline 57
inc R20
L12:
.dbline 57
cpi R20,8
brlo L9
.dbline 66
; LCDDDR_OUT;
; SCK_ON;
; SCK_OFF;
; }
; for(i=0;i<8;i++)
clr R20
rjmp L18
L15:
.dbline 67
; {
.dbline 68
; LCDDDR_IN;
cbi 0x17,6
.dbline 68
.dbline 69
; temp2=temp2<<1;
lsl R16
.dbline 70
; if ((PINB&0x40)!=0)temp2++; //与端口设置有关，主要修改端口时修改此位
sbis 0x16,6
rjmp L19
.dbline 70
inc R16
L19:
.dbline 71
in R24,0x17
ori R24,194
out 0x17,R24
.dbline 71
.dbline 72
sbi 0x18,7
.dbline 73
cbi 0x18,7
.dbline 74
L16:
.dbline 66
inc R20
L18:
.dbline 66
cpi R20,8
brlo L15
.dbline 75
; LCDDDR_OUT;
; SCK_ON;
; SCK_OFF;
; }
; return ((0xf0&temp1)+(0x0f&temp2));
mov R24,R16
andi R24,15
mov R16,R18
andi R16,240
add R16,R24
.dbline -2
L8:
rcall pop_gset1
.dbline 0 ; func end
ret
.dbsym r temp2 16 c
.dbsym r temp1 18 c
.dbsym r i 20 c
.dbend
.dbfunc e CheckBusy _CheckBusy fV
.even
_CheckBusy::
.dbline -1
.dbline 79
; }
; //液晶忙检查CheckBusy
; void CheckBusy( void )
; {
L22:
.dbline 80
; do SendByte(0xfc); //11111,RW(1),RS(0),0
ldi R16,252
rcall _SendByte
L23:
.dbline 81
; while(0x80&ReceiveByte());
rcall _ReceiveByte
sbrc R16,7
rjmp L22
.dbline -2
L21:
.dbline 0 ; func end
ret
.dbend
.dbfunc e WriteCommand _WriteCommand fV
; Cbyte -> R20
.even
_WriteCommand::
rcall push_gset1
mov R20,R16
.dbline -1
.dbline 85
; }
; //========写命令========
; void WriteCommand( unsigned char Cbyte )
; {
.dbline 86
; CheckBusy();
rcall _CheckBusy
.dbline 87
; SendByte(0xf8); //11111,RW(0),RS(0),0
ldi R16,248
rcall _SendByte
.dbline 88
; SendByte(0xf0&Cbyte);
mov R16,R20
andi R16,240
rcall _SendByte
.dbline 89
; SendByte(0xf0&Cbyte<<4);
mov R16,R20
andi R16,#0x0F
swap R16
andi R16,240
rcall _SendByte
.dbline -2
L25:
rcall pop_gset1
.dbline 0 ; func end
ret
.dbsym r Cbyte 20 c
.dbend
.dbfunc e WriteData _WriteData fV
; Dbyte -> R20
.even
_WriteData::
rcall push_gset1
mov R20,R16
.dbline -1
.dbline 93
; }
; //========写数据========
; void WriteData( unsigned char Dbyte )
; {
.dbline 94
; CheckBusy();
rcall _CheckBusy
.dbline 95
; SendByte(0xfa); //11111,RW(0),RS(1),0
ldi R16,250
rcall _SendByte
.dbline 96
; SendByte(0xf0&Dbyte);
mov R16,R20
andi R16,240
rcall _SendByte
.dbline 97
; SendByte(0xf0&Dbyte<<4);
mov R16,R20
andi R16,#0x0F
swap R16
andi R16,240
rcall _SendByte
.dbline -2
L26:
rcall pop_gset1
.dbline 0 ; func end
ret
.dbsym r Dbyte 20 c
.dbend
.dbfunc e ReadData _ReadData fc
.even
_ReadData::
.dbline -1
.dbline 101
; }
; //========读数据========
; unsigned char ReadData( void )
; {
.dbline 102
; CheckBusy();
rcall _CheckBusy
.dbline 103
; SendByte(0xfe); //11111,RW(1),RS(1),0
ldi R16,254
rcall _SendByte
.dbline 104
; return ReceiveByte();
rcall _ReceiveByte
.dbline -2
L27:
.dbline 0 ; func end
ret
.dbend
.dbfunc e Delay _Delay fV
; usn -> R20
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