main.s

本文提出了基于MCU和RS485总线的嵌入式系统的常用设计方法

	.dbline 133
; 
	mov R18,R10
	mov R16,R22
	xcall _LCD_set_xy
	xjmp L26
L25:
	.dbline 135
	.dbline 136
	movw R30,R20
	ldd R16,z+0
	xcall _LCD_write_data
	.dbline 137
	subi R20,255  ; offset = 1
	sbci R21,255
	.dbline 138
L26:
	.dbline 134
; 
	movw R30,R20
	ldd R2,z+0
	tst R2
	brne L25
	.dbline -2
L24:
	xcall pop_gset3
	.dbline 0 ; func end
	ret
	.dbsym r s 20 pc
	.dbsym r Y 10 c
	.dbsym r X 22 c
	.dbend
	.dbfunc e LCD_write_char _LCD_write_char fV
;           data -> y+4
;              Y -> R22
;              X -> R20
	.even
_LCD_write_char::
	xcall push_gset2
	mov R22,R18
	mov R20,R16
	.dbline -1
	.dbline 143
; 
; 
; 
; 
; 
; 
; 
; 
; 
	.dbline 144
; 
	mov R18,R22
	mov R16,R20
	xcall _LCD_set_xy
	.dbline 145
; 
	ldd R16,y+4
	xcall _LCD_write_data
	.dbline -2
L28:
	xcall pop_gset2
	.dbline 0 ; func end
	ret
	.dbsym l data 4 c
	.dbsym r Y 22 c
	.dbsym r X 20 c
	.dbend
	.area data(ram, con, rel)
	.dbfile F:\ChengXuCunFang\ChengXU\AVR单片机程序存放\max485多机通讯1\从机1/1602.h
_n::
	.blkb 1
	.area idata
	.byte 0
	.area data(ram, con, rel)
	.dbfile F:\ChengXuCunFang\ChengXU\AVR单片机程序存放\max485多机通讯1\从机1/1602.h
	.dbfile F:\ChengXuCunFang\ChengXU\AVR单片机程序存放\max485多机通讯1\从机1\main.c
	.dbsym e n _n c
	.area text(rom, con, rel)
	.dbfile F:\ChengXuCunFang\ChengXU\AVR单片机程序存放\max485多机通讯1\从机1\main.c
	.dbfunc e usart_init _usart_init fV
	.even
_usart_init::
	.dbline -1
	.dbline 19
	.dbline 20
	ldi R24,1
	out 0xb,R24
	.dbline 21
	ldi R24,156
	out 0xa,R24
	.dbline 22
	ldi R24,182
	out 0x20,R24
	.dbline 23
	clr R2
	out 0x20,R2
	.dbline 24
	ldi R24,47
	out 0x9,R24
	.dbline -2
L29:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e crc8 _crc8 fc
;            crc -> R20
;              i -> R22
;            len -> R18
;            ptr -> R16,R17
	.even
_crc8::
	xcall push_gset2
	.dbline -1
	.dbline 28
	.dbline 30
	clr R20
	xjmp L32
L31:
	.dbline 32
	.dbline 33
	ldi R22,1
	xjmp L37
L34:
	.dbline 34
	.dbline 35
	sbrs R20,0
	rjmp L38
	.dbline 35
	.dbline 35
	lsr R20
	.dbline 35
	ldi R24,140
	ldi R25,0
	mov R2,R20
	clr R3
	eor R2,R24
	eor R3,R25
	mov R20,R2
	.dbline 35
	xjmp L39
L38:
	.dbline 36
	lsr R20
L39:
	.dbline 37
	movw R30,R16
	ldd R2,z+0
	and R2,R22
	breq L40
	.dbline 37
	ldi R24,140
	ldi R25,0
	mov R2,R20
	clr R3
	eor R2,R24
	eor R3,R25
	mov R20,R2
L40:
	.dbline 38
L35:
	.dbline 33
	ldi R24,2
	mul R24,R22
	mov R22,R0
L37:
	.dbline 33
	tst R22
	brne L34
	.dbline 39
	subi R16,255  ; offset = 1
	sbci R17,255
	.dbline 40
L32:
	.dbline 31
	mov R2,R18
	clr R3
	subi R18,1
	tst R2
	brne L31
	.dbline 41
	mov R16,R20
	.dbline -2
L30:
	xcall pop_gset2
	.dbline 0 ; func end
	ret
	.dbsym r crc 20 c
	.dbsym r i 22 c
	.dbsym r len 18 c
	.dbsym r ptr 16 pc
	.dbend
	.dbfunc e usart_out _usart_out fV
;              i -> R20
;              n -> R18
;          datas -> R16,R17
	.even
_usart_out::
	xcall push_gset1
	.dbline -1
	.dbline 49
	.dbline 50
	clr R20
	.dbline 51
	sbi 0x12,4
	xjmp L44
L43:
	.dbline 53
	.dbline 54
	tst R20
	brne L46
	.dbline 54
	sbi 0xa,0
	xjmp L47
L46:
	.dbline 54
	in R24,0xa
	andi R24,254
	out 0xa,R24
L47:
	.dbline 55
	mov R30,R20
	clr R31
	add R30,R16
	adc R31,R17
	ldd R2,z+0
	out 0xc,R2
L48:
	.dbline 56
L49:
	.dbline 56
	sbis 0xb,6
	rjmp L48
	.dbline 57
	sbi 0xb,6
	.dbline 58
	inc R20
	.dbline 59
L44:
	.dbline 52
	cp R20,R18
	brlo L43
	.dbline 60
	cbi 0x12,4
	.dbline -2
L42:
	xcall pop_gset1
	.dbline 0 ; func end
	ret
	.dbsym r i 20 c
	.dbsym r n 18 c
	.dbsym r datas 16 pc
	.dbend
	.area vector(rom, abs)
	.org 44
	jmp _RXC_Int
	.area text(rom, con, rel)
	.dbfile F:\ChengXuCunFang\ChengXU\AVR单片机程序存放\max485多机通讯1\从机1\main.c
	.dbfunc e RXC_Int _RXC_Int fV
	.even
_RXC_Int::
	xcall push_lset
	.dbline -1
	.dbline 66
	.dbline 67
	in R24,0xb
	andi R24,28
	breq L52
	.dbline 67
	.dbline 67
	in R2,0xc
	sts _n,R2
	.dbline 67
	clr R2
	sts _n,R2
	.dbline 67
	sbi 0xb,0
	.dbline 67
	xjmp L53
L52:
	.dbline 68
	.dbline 69
	sbis 0xa,1
	rjmp L54
	.dbline 69
	clr R2
	sts _n,R2
L54:
	.dbline 70
	ldi R24,<_inbox
	ldi R25,>_inbox
	lds R30,_n
	clr R31
	add R30,R24
	adc R31,R25
	in R2,0xc
	std z+0,R2
	.dbline 70
	lds R24,_n
	subi R24,255    ; addi 1
	sts _n,R24
	.dbline 71
	lds R24,_inbox
	cpi R24,11
	brne L56
	.dbline 71
	in R24,0xb
	andi R24,254
	out 0xb,R24
	xjmp L57
L56:
	.dbline 71
	sbi 0xb,0
L57:
	.dbline 72
	lds R24,_n
	cpi R24,10
	brne L58
	.dbline 73
	.dbline 74
	ldi R18,9
	ldi R16,<_inbox
	ldi R17,>_inbox
	xcall _crc8
	lds R2,_inbox+9
	cp R2,R16
	brne L60
	.dbline 75
	.dbline 76
	ldi R24,1
	sts _send,R24
	.dbline 79
	ldi R18,9
	ldi R16,<_send
	ldi R17,>_send
	xcall _crc8
	sts _send+9,R16
	.dbline 80
	ldi R18,10
	ldi R16,<_send
	ldi R17,>_send
	xcall _usart_out
	.dbline 81
	lds R2,_inbox+3
	clr R3
	out 0x2b,R3
	out 0x2a,R2
	.dbline 82
L60:
	.dbline 83
L58:
	.dbline 84
L53:
	.dbline -2
L51:
	xcall pop_lset
	.dbline 0 ; func end
	reti
	.dbend
	.dbfunc e main _main fV
	.even
_main::
	sbiw R28,2
	.dbline -1
	.dbline 90
	.dbline 91
	xcall _usart_init
	.dbline 92
	xcall _LCD_init
	.dbline 93
	cbi 0x12,4
	.dbline 94
	sbi 0x11,4
	.dbline 95
	ldi R24,129
	out 0x2f,R24
	.dbline 96
	ldi R24,9
	out 0x2e,R24
	.dbline 97
	sbi 0x11,5
	.dbline 98
	ldi R24,255
	ldi R25,0
	out 0x2b,R25
	out 0x2a,R24
	.dbline 99
	sei
	.dbline 100
	ldi R24,<L66
	ldi R25,>L66
	std y+1,R25
	std y+0,R24
	clr R18
	clr R16
	xcall _LCD_write_string
	.dbline 101
	ldi R24,<L67
	ldi R25,>L67
	std y+1,R25
	std y+0,R24
	ldi R18,1
	clr R16
	xcall _LCD_write_string
L68:
	.dbline 104
	.dbline 106
L69:
	.dbline 103
	xjmp L68
X0:
	.dbline 106
	.dbline -2
L65:
	adiw R28,2
	.dbline 0 ; func end
	ret
	.dbend
	.area bss(ram, con, rel)
	.dbfile F:\ChengXuCunFang\ChengXU\AVR单片机程序存放\max485多机通讯1\从机1\main.c
_inbox::
	.blkb 10
	.dbsym e inbox _inbox A[10:10]c
_send::
	.blkb 10
	.dbsym e send _send A[10:10]c
	.area data(ram, con, rel)
	.dbfile F:\ChengXuCunFang\ChengXU\AVR单片机程序存放\max485多机通讯1\从机1\main.c
L67:
	.blkb 5
	.area idata
	.byte 'R,'e,'v,58,0
	.area data(ram, con, rel)
	.dbfile F:\ChengXuCunFang\ChengXU\AVR单片机程序存放\max485多机通讯1\从机1\main.c
L66:
	.blkb 6
	.area idata
	.byte 'S,'e,'n,'d,58,0
	.area data(ram, con, rel)
	.dbfile F:\ChengXuCunFang\ChengXU\AVR单片机程序存放\max485多机通讯1\从机1\main.c