📄 pcf8563_test.s
字号:
.module pcf8563_test.c
.area text(rom, con, rel)
.dbfile D:\mega16_32实验板资料\ICCAVR源程序\twi\pcf8563\pcf8563_test.c
.dbfile D:\mega16_32实验板资料\ICCAVR源程序\twi\pcf8563\delay.h
.dbfunc e delay_1us _delay_1us fV
.even
_delay_1us::
.dbline -1
.dbline 6
; /**********延时函数*****************/
; /*-----------------------------------------------
; delay_us :1us延时函数
; ------------------------------------------------*/
; void delay_1us(void)
; {
.dbline 7
; asm("nop");
nop
.dbline -2
L1:
.dbline 0 ; func end
ret
.dbend
.dbfunc e delay_us _delay_us fV
; t -> R20,R21
.even
_delay_us::
st -y,R20
st -y,R21
movw R20,R16
.dbline -1
.dbline 14
; }
; /*-----------------------------------------------
; delay_nus :长延时函数
; 输入参数: t :延时时间 us
; ------------------------------------------------*/
; void delay_us(unsigned int t)
; {
xjmp L4
L3:
.dbline 16
; while(t--)
; delay_1us();
xcall _delay_1us
L4:
.dbline 15
movw R2,R20
subi R20,1
sbci R21,0
tst R2
brne L3
tst R3
brne L3
X0:
.dbline -2
L2:
.dbline 0 ; func end
ld R21,y+
ld R20,y+
ret
.dbsym r t 20 i
.dbend
.dbfunc e delay_1ms _delay_1ms fV
; i -> R16,R17
.even
_delay_1ms::
.dbline -1
.dbline 22
; }
; /*----------------------------------------------
; delay_ms :1ms延时函数
; -----------------------------------------------*/
; void delay_1ms(void)
; {
.dbline 24
; unsigned int i;
; for(i=0;i<1140;i++);
clr R16
clr R17
xjmp L10
L7:
.dbline 24
L8:
.dbline 24
subi R16,255 ; offset = 1
sbci R17,255
L10:
.dbline 24
cpi R16,116
ldi R30,4
cpc R17,R30
brlo L7
X1:
.dbline -2
L6:
.dbline 0 ; func end
ret
.dbsym r i 16 i
.dbend
.dbfunc e delay_ms _delay_ms fV
; t -> R20,R21
.even
_delay_ms::
st -y,R20
st -y,R21
movw R20,R16
.dbline -1
.dbline 31
; }
; /*----------------------------------------------
; delay_nms :长延时函数
; 输入参数: t :延时时间 ms
; -----------------------------------------------*/
; void delay_ms(unsigned int t)
; {
xjmp L13
L12:
.dbline 33
; while(t--)
; delay_1ms();
xcall _delay_1ms
L13:
.dbline 32
movw R2,R20
subi R20,1
sbci R21,0
tst R2
brne L12
tst R3
brne L12
X2:
.dbline -2
L11:
.dbline 0 ; func end
ld R21,y+
ld R20,y+
ret
.dbsym r t 20 i
.dbend
.dbfile D:\mega16_32实验板资料\ICCAVR源程序\twi\pcf8563\twi.h
.dbfunc e Twi_Init _Twi_Init fV
.even
_Twi_Init::
.dbline -1
.dbline 49
; /*******************************************
; * I2C（TWI）操作函数 *
; * 文 件 名：TWI.h *
; * 函数功能：利用CPU的硬件TWI接口操作 *
; * 设 计：张子凤 *
; * 修改日期：2008年11月11日 *
; * 版 本：V1.0 *
; * 主控芯片：Mega16 *
; *******************************************/
; //宏定义
; //状态寄存器TWSR各种状态定义
; //主模式启动状态
; #define START 0x08 //启动总线
; #define RESTART 0x10 //重新启动总线
;
; //主发送模式各种状态
; #define MT_SLA_ACK 0x18 //SLA_W写地址已发送，收到应答位
; #define MT_SLA_NACK 0x20 //SLA_W写地址已发送，收到非应答位
; #define MT_DATA_ACK 0x28 //写入数据已发送，收到应答位
; #define MT_DATA_NACK 0x30 //写入数据已发送，收到应答位
; #define MT_ARB_LOST 0x38 //SLA_W或数据仲裁失败
;
; //主接收模式各种状态
; #define MR_ARB_LOST 0x38 //
; #define MR_SLA_ACK 0x40 //SLA_R已发送，收到应答位
; #define MR_SLA_NACK 0x48 //SLA_R已发送，收到非应答位
; #define MR_DATA_ACK 0x50 //接收到数据，应答位已返回
; #define MR_DATA_NACK 0x58 //接收到数据，非应答位已返回
;
; #define PCF8563_SLA_W 0xA2 //PCF8563写从地址
; #define PCF8563_SLA_R 0xA3 //PCF8563读从地址
;
; #define start() (TWCR=(1<<TWINT)|(1<<TWSTA)|(1<<TWEN))
; #define stop() (TWCR=(1<<TWINT)|(1<<TWSTO)|(1<<TWEN))
; #define waitack() {while(!(TWCR&(1<<TWINT)));}
; #define chkack() (TWSR&0xf8) //check ack
; #define sendack() (TWCR|=(1<<TWEA))
; #define sendnack() (TWCR&=~(1<<TWEA))
; #define sendbyte(x) {TWDR=(x);TWCR=(1<<TWINT)|(1<<TWEN);}
; #define rcvnckbyte()(TWCR=(1<<TWINT)|(1<<TWEN))
; #define rcvackbyte()(TWCR=(1<<TWINT)|(1<<TWEN)|(1<<TWEA))
;
; /* I2C Config */
; #define I2C_ERR 0
; #define I2C_CRR 1
;
; //TWI初始化
; void Twi_Init(void)
; {
.dbline 50
; TWBR=14;
ldi R24,14
out 0x0,R24
.dbline 51
; TWSR=0;
clr R2
out 0x1,R2
.dbline -2
L15:
.dbline 0 ; func end
ret
.dbend
.dbfile D:\mega16_32实验板资料\ICCAVR源程序\twi\pcf8563\lcd1602.h
.dbfunc e LCD_init _LCD_init fV
.even
_LCD_init::
.dbline -1
.dbline 34
; /*-------------------------------------------
; RS----------PC2
; RW----------GND
; EN----------PC3
; D4-D7-------PC4-PC7
; ---------------------------------------------*/
; //定义MCU与LCD的接口
; #define LCD_EN_PORT PORTC
; #define LCD_EN_DDR DDRC
; #define LCD_RS_PORT PORTC
; #define LCD_RS_DDR DDRC
; #define LCD_DATA_PORT PORTC
; #define LCD_DATA_DDR DDRC
; #define LCD_DATA_PIN PINC
; #define LCD_EN 0x08 //portc3 out
; #define LCD_RS 0x04 //portc2 out
; #define LCD_DATA 0xf0 //portc4/5/6/7 out
;
; /*----------------------------------------------------------
; Public function prototypes
; ----------------------------------------------------------*/
; void LCD_init(void);
; void LCD_en_write(void);
; void clear(void);
; void LCD_write_char(unsigned command,unsigned data);
; void LCD_set_xy(unsigned char x, unsigned char y);
; void LCD_write_string(unsigned char X,unsigned char Y,unsigned char *s);
; void LCD_write_data(unsigned char X,unsigned char Y,int dat);
;
; /*------------------------------------------------------------
; 函数: lcd1602口线初始化和液晶初始化
; -------------------------------------------------------------*/
; void LCD_init(void) //液晶初始化
; {
.dbline 35
; LCD_DATA_DDR|=LCD_DATA;
in R24,0x14
ori R24,240
out 0x14,R24
.dbline 36
; LCD_EN_DDR|=LCD_EN;
sbi 0x14,3
.dbline 37
; LCD_RS_DDR|=LCD_RS;
sbi 0x14,2
.dbline 38
; delay_ms(15);
ldi R16,15
ldi R17,0
xcall _delay_ms
.dbline 39
; LCD_write_char(0x28,0); //4位显示
clr R18
clr R19
ldi R16,40
ldi R17,0
xcall _LCD_write_char
.dbline 40
; delay_ms(15);
ldi R16,15
ldi R17,0
xcall _delay_ms
.dbline 41
; LCD_write_char(0x0c,0); //显示开
clr R18
clr R19
ldi R16,12
ldi R17,0
xcall _LCD_write_char
.dbline 42
; delay_ms(15);
ldi R16,15
ldi R17,0
xcall _delay_ms
.dbline 43
; LCD_write_char(0x01,0); //清屏
clr R18
clr R19
ldi R16,1
ldi R17,0
xcall _LCD_write_char
.dbline 44
; clear();
xcall _clear
.dbline -2
L16:
.dbline 0 ; func end
ret
.dbend
.dbfunc e LCD_set_xy _LCD_set_xy fV
; address -> R20
; y -> R10
; x -> R22
.even
_LCD_set_xy::
xcall push_xgsetF00C
mov R10,R18
mov R22,R16
.dbline -1
.dbline 53
; }
;
; /*------------------------------------------------------------
; 函数: 设置显示地址
; para: x---the display address of a line limit: 0---15
; y---the display line limit 0 or 1
; --------------------------------------------------------------*/
; void LCD_set_xy(unsigned char x, unsigned char y) //写地址函数
; {
.dbline 55
; unsigned char address;
; if(y ==0)
tst R10
brne L18
X3:
.dbline 56
; address=0x80+x; //the first line
mov R20,R22
subi R20,128 ; addi 128
xjmp L19
L18:
.dbline 58
; else
; address=0xc0+x; //the second line
mov R20,R22
subi R20,64 ; addi 192
L19:
.dbline 59
; LCD_write_char(address,0);
clr R18
clr R19
mov R16,R20
clr R17
xcall _LCD_write_char
.dbline -2
L17:
.dbline 0 ; func end
xjmp pop_xgsetF00C
.dbsym r address 20 c
.dbsym r y 10 c
.dbsym r x 22 c
.dbend
.dbfunc e LCD_en_write _LCD_en_write fV
.even
_LCD_en_write::
.dbline -1
.dbline 65
; }
; /*-------------------------------------------------------------
; 函数: lcd1602使能
; *--------------------------------------------------------------*/
; void LCD_en_write(void) //液晶使能
; {
.dbline 66
; LCD_EN_PORT|=LCD_EN;
sbi 0x15,3
.dbline 67
; delay_us(5);
ldi R16,5
ldi R17,0
xcall _delay_us
.dbline 68
; LCD_EN_PORT&=~LCD_EN;
cbi 0x15,3
.dbline -2
L20:
.dbline 0 ; func end
ret
.dbend
.dbfunc e LCD_write_char _LCD_write_char fV
; data_temp -> R22,R23
; command_temp -> R20,R21
; data -> R12,R13
; command -> R10,R11
.even
_LCD_write_char::
xcall push_xgsetF03C
movw R12,R18
movw R10,R16
.dbline -1
.dbline 76
; }
; /*------------------------------------------------------------
; 函数: 写命令或数据到lcd1602
; 参数：command: 0---写数据, 1---写命令
; data: 所要写的命令或数据
; *-------------------------------------------------------------*/
; void LCD_write_char(unsigned command,unsigned data)
; {
.dbline 78
; unsigned command_temp,data_temp;
; command_temp=command;
movw R20,R10
.dbline 79
; data_temp=data;
movw R22,R12
.dbline 80
; delay_us(25);
ldi R16,25
ldi R17,0
xcall _delay_us
.dbline 81
; if(command==0)
cpi R20,0
cpc R20,R21
brne L22
X4:
.dbline 82
; {
.dbline 83
; LCD_RS_PORT|=LCD_RS; //RS=1
sbi 0x15,2
.dbline 84
; LCD_DATA_PORT&=0X0f;
in R24,0x15
andi R24,15
out 0x15,R24
.dbline 85
; LCD_DATA_PORT|=data_temp&0xf0; //写高四位
movw R24,R22
andi R24,240
andi R25,0
in R2,0x15
clr R3
or R2,R24
or R3,R25
out 0x15,R2
.dbline 86
; LCD_en_write();
xcall _LCD_en_write
.dbline 87
; data_temp=data_temp<<4;
lsl R22
rol R23
lsl R22
rol R23
lsl R22
rol R23
lsl R22
rol R23
.dbline 88
; LCD_DATA_PORT&=0X0f;
in R24,0x15
andi R24,15
out 0x15,R24
.dbline 89
; LCD_DATA_PORT|=data_temp&0xf0; //写低四位
movw R24,R22
andi R24,240
andi R25,0
in R2,0x15
clr R3
or R2,R24
or R3,R25
out 0x15,R2
.dbline 90
; LCD_en_write();
xcall _LCD_en_write
.dbline 91
; }
xjmp L23
L22:
.dbline 93
; else
; {
.dbline 94
; LCD_RS_PORT&=~LCD_RS; //RS=0
cbi 0x15,2
.dbline 95
; LCD_DATA_PORT&=0X0f;
in R24,0x15
andi R24,15
out 0x15,R24
.dbline 96
; LCD_DATA_PORT|=command_temp&0xf0; //写高四位
movw R24,R20
andi R24,240
andi R25,0
in R2,0x15
clr R3
or R2,R24
or R3,R25
out 0x15,R2
.dbline 97
; LCD_en_write();
xcall _LCD_en_write
.dbline 98
; command_temp=command_temp<<4;
lsl R20
rol R21
lsl R20
rol R21
lsl R20
rol R21
lsl R20
rol R21
.dbline 99
; LCD_DATA_PORT&=0x0f;
in R24,0x15
andi R24,15
out 0x15,R24
.dbline 100
; LCD_DATA_PORT|=command_temp&0xf0; //写低四位
movw R24,R20
andi R24,240
andi R25,0
in R2,0x15
clr R3
or R2,R24
or R3,R25
out 0x15,R2
.dbline 101
; LCD_en_write();
xcall _LCD_en_write
.dbline 102
; }
L23:
.dbline -2
L21:
.dbline 0 ; func end
xjmp pop_xgsetF03C
.dbsym r data_temp 22 i
.dbsym r command_temp 20 i
.dbsym r data 12 i
.dbsym r command 10 i
.dbend
.dbfunc e clear _clear fV
; i -> R20
.even
_clear::
st -y,R20
.dbline -1
.dbline 108
; }
; /*-------------------------------------------------------------
; 函数: 清屏lcd1602
; ---------------------------------------------------------------*/
; void clear(void)
; {
.dbline 110
; unsigned char i;
; LCD_set_xy(0,0);
clr R18
clr R16
xcall _LCD_set_xy
.dbline 111
; for(i=0;i<16;i++)
clr R20
xjmp L28
L25:
.dbline 112
; LCD_write_char(0,' ');
ldi R18,32
ldi R19,0
clr R16
clr R17
xcall _LCD_write_char
L26:
.dbline 111
inc R20
L28:
.dbline 111
cpi R20,16
brlo L25
X5:
.dbline 113
; LCD_set_xy(0,1);
ldi R18,1
clr R16
xcall _LCD_set_xy
.dbline 114
; for(i=0;i<16;i++)
clr R20
xjmp L32
L29:
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