内部eeprom.s

AVR之ATMega16

	.module _内部eeprom.c
	.area text(rom, con, rel)
	.dbfile C:\DOCUME~1\Administrator\桌面\精雅系列单片机实验开发板演示程序\内部eeprom/delay.h
	.dbfunc e DelayUS _DelayUS fV
;           time -> R16,R17
	.even
_DelayUS::
	.dbline -1
	.dbline 9
; //包含所需头文件
; #include <ioM16v.h>
; #include <macros.h>
; #include "delay.h"
; 
; 
; 
; /*------宏定义------*/
; #define uchar	unsigned char
	xjmp L3
L2:
	.dbline 11
	subi R16,1
	sbci R17,0
L3:
	.dbline 10
; #define uint	unsigned int
	ldi R24,1
	ldi R25,0
	cp R24,R16
	cpc R25,R17
	brlo L2
	.dbline -2
L1:
	.dbline 0 ; func end
	ret
	.dbsym r time 16 i
	.dbend
	.dbfunc e DelayMS _DelayMS fV
;              i -> R20,R21
;           time -> R16,R17
	.even
_DelayMS::
	xcall push_gset1
	.dbline -1
	.dbline 20
; 
; 
; 
; /*------函数定义------*/
; uchar e2prom_read(uint addr);
; void e2prom_write(uint addr,uchar wData);
; 
; 
; 
; 
	xjmp L7
L6:
	.dbline 23
; //端口初始化
; void port_init(void)
; {
	.dbline 24
;  PORTA = 0xFF;//设置端口方向、数据
	ldi R20,1
	ldi R21,0
	xjmp L12
L9:
	.dbline 25
L10:
	.dbline 24
	subi R20,255  ; offset = 1
	sbci R21,255
L12:
	.dbline 24
	cpi R20,118
	ldi R30,4
	cpc R21,R30
	brlo L9
	.dbline 26
L7:
	.dbline 22
	movw R2,R16
	subi R16,1
	sbci R17,0
	tst R2
	brne L6
	tst R3
	brne L6
X0:
	.dbline -2
L5:
	xcall pop_gset1
	.dbline 0 ; func end
	ret
	.dbsym r i 20 i
	.dbsym r time 16 i
	.dbend
	.dbfile C:\DOCUME~1\Administrator\桌面\精雅系列单片机实验开发板演示程序\内部eeprom\内部eeprom.c
	.dbfunc e port_init _port_init fV
	.even
_port_init::
	.dbline -1
	.dbline 23
	.dbline 24
	ldi R24,255
	out 0x1b,R24
	.dbline 25
;  DDRA  = 0xFF;
	out 0x1a,R24
	.dbline 26
;  PORTB = 0x00;
	clr R2
	out 0x18,R2
	.dbline 27
;  DDRB  = 0x00;
	out 0x17,R2
	.dbline 28
;  PORTC = 0x00;
	out 0x15,R2
	.dbline 29
;  DDRC  = 0x00;
	out 0x14,R2
	.dbline 30
;  PORTD = 0x00;
	out 0x12,R2
	.dbline 31
;  DDRD  = 0x00;
	out 0x11,R2
	.dbline -2
L13:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e e2prom_read _e2prom_read fc
;           addr -> R16,R17
	.even
_e2prom_read::
	.dbline -1
	.dbline 37
; }
; 
; 
; //功能:E2PROM单字节读函数
; uchar e2prom_read(uint addr)  
; {
L15:
	.dbline 38
L16:
	.dbline 38
;  while(EECR & (1<<EEWE));  //判断EEPROM是否工作
	sbic 0x1c,1
	rjmp L15
	.dbline 39
;  EEAR = addr;              //送入EEPROM地址
	out 0x1f,R17
	out 0x1e,R16
	.dbline 40
;  EECR|=BIT(EERE);          //EEPROM读使能
	sbi 0x1c,0
	.dbline 41
;  return EEDR;              //返回EEPROM数据寄存器数值
	in R16,0x1d
	.dbline -2
L14:
	.dbline 0 ; func end
	ret
	.dbsym r addr 16 i
	.dbend
	.dbfunc e e2prom_write _e2prom_write fV
;          wData -> R18
;           addr -> R16,R17
	.even
_e2prom_write::
	.dbline -1
	.dbline 47
; }
; 
; 
; //功能:单字节写函数
; void e2prom_write(uint addr,uchar wData)
; {
L19:
	.dbline 48
L20:
	.dbline 48
;  while(EECR & BIT(EEWE));  //判断EEPROM是否工作
	sbic 0x1c,1
	rjmp L19
	.dbline 49
;  EEAR=addr;                //送入EEPROM地址
	out 0x1f,R17
	out 0x1e,R16
	.dbline 50
;  EEDR=wData;               //送入EEPROM数据
	out 0x1d,R18
	.dbline 51
;  EECR|=BIT(EEMWE);         //EEPROM主写使能
	sbi 0x1c,2
	.dbline 52
;  EECR|=BIT(EEWE);          //EEPROM写使能
	sbi 0x1c,1
	.dbline -2
L18:
	.dbline 0 ; func end
	ret
	.dbsym r wData 18 c
	.dbsym r addr 16 i
	.dbend
	.dbfunc e init_devices _init_devices fV
	.even
_init_devices::
	.dbline -1
	.dbline 57
; }
; 
; 
; void init_devices(void)
; {
	.dbline 58
;  CLI(); //禁止所有中断
	cli
	.dbline 59
;  MCUCR  = 0x00;//INT0、INT1中断触发方式
	clr R2
	out 0x35,R2
	.dbline 60
;  MCUCSR = 0x80;//禁止JTAG
	ldi R24,128
	out 0x34,R24
	.dbline 61
;  GICR   = 0x00;//外部中断使能
	out 0x3b,R2
	.dbline 62
;  port_init();
	xcall _port_init
	.dbline 63
;  SEI();//开全局中断
	sei
	.dbline -2
L22:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e main _main fV
	.even
_main::
	.dbline -1
	.dbline 67
; }
; //主函数
; void main(void)
; {
	.dbline 68
;  init_devices();
	xcall _init_devices
	xjmp L25
L24:
	.dbline 70
	.dbline 71
	clr R18
	clr R16
	clr R17
	xcall _e2prom_write
	.dbline 72
	clr R16
	clr R17
	xcall _e2prom_read
	out 0x1b,R16
	.dbline 73
	ldi R16,1000
	ldi R17,3
	xcall _DelayMS
	.dbline 74
	ldi R18,240
	ldi R16,1
	ldi R17,0
	xcall _e2prom_write
	.dbline 75
	ldi R16,1
	ldi R17,0
	xcall _e2prom_read
	out 0x1b,R16
	.dbline 76
	ldi R16,1000
	ldi R17,3
	xcall _DelayMS
	.dbline 77
	ldi R18,15
	ldi R16,2
	ldi R17,0
	xcall _e2prom_write
	.dbline 78
	ldi R16,2
	ldi R17,0
	xcall _e2prom_read
	out 0x1b,R16
	.dbline 79
	ldi R16,1000
	ldi R17,3
	xcall _DelayMS
	.dbline 80
	ldi R18,170
	ldi R16,3
	ldi R17,0
	xcall _e2prom_write
	.dbline 81
	ldi R16,3
	ldi R17,0
	xcall _e2prom_read
	out 0x1b,R16
	.dbline 82
	ldi R16,1000
	ldi R17,3
	xcall _DelayMS
	.dbline 83
	ldi R18,255
	ldi R16,4
	ldi R17,0
	xcall _e2prom_write
	.dbline 84
	ldi R16,4
	ldi R17,0
	xcall _e2prom_read
	out 0x1b,R16
	.dbline 85
	ldi R16,1000
	ldi R17,3
	xcall _DelayMS
	.dbline 86
L25:
	.dbline 69
	xjmp L24
X1:
	.dbline -2
L23:
	.dbline 0 ; func end
	ret
	.dbend