📄 011.lst
字号:
__text_start:
__start:
002A E5CF LDI R28,0x5F
002B E0D4 LDI R29,4
002C BFCD OUT 0x3D,R28
002D BFDE OUT 0x3E,R29
002E 51C0 SUBI R28,0x10
002F 40D0 SBCI R29,0
0030 EA0A LDI R16,0xAA
0031 8308 STD Y+0,R16
0032 2400 CLR R0
0033 E6E0 LDI R30,0x60
0034 E0F0 LDI R31,0
0035 E010 LDI R17,0
0036 36E0 CPI R30,0x60
0037 07F1 CPC R31,R17
0038 F011 BEQ 0x003B
0039 9201 ST R0,Z+
003A CFFB RJMP 0x0036
003B 8300 STD Z+0,R16
003C E5E4 LDI R30,0x54
003D E0F0 LDI R31,0
003E E6A0 LDI R26,0x60
003F E0B0 LDI R27,0
0040 E010 LDI R17,0
0041 35E4 CPI R30,0x54
0042 07F1 CPC R31,R17
0043 F021 BEQ 0x0048
0044 95C8 LPM
0045 9631 ADIW R30,1
0046 920D ST R0,X+
0047 CFF9 RJMP 0x0041
0048 940E008F CALL _main
_exit:
004A CFFF RJMP _exit
_delay_ms:
a --> R20
b --> R22
i --> R16
004B 940E00BE CALL push_gset2
FILE: E:\ICCAVR\project\AVRMEG~2\icc\011-EEPROM-LED\main.c
(0001) /*
(0002) 实验十一：
(0003)
(0004) 片内EEPROM读写实险。
(0005) 1、用内部EEPROM记录CPU启动次数，并在PB口上显示出来。
(0006) 2、内部1 M晶振，程序采用单任务方式，软件延时。
(0007) 3、进行此实验请插上JP1的所有8个短路块，JP7(LED_EN)短路块。
(0008) 4、通过此实验，可以对对内部EEPROM有个初步认识，了解EEPROM函数的操作。
(0009)
(0010) AVR mega16学习板
(0011) www.iccavr.com
(0012) 14:42 2007-4-9
(0013) */
(0014)
(0015) #include "iom16v.h"
(0016)
(0017) /*延时函数*/
(0018) void delay_ms(unsigned char i) {
(0019)
(0020) unsigned char a, b;
(0021) for (a = 1; a < i; a++) {
004D E041 LDI R20,1
004E C006 RJMP 0x0055
(0022) for (b = 1; b; b++) {
004F E061 LDI R22,1
0050 C001 RJMP 0x0052
0051 9563 INC R22
0052 2366 TST R22
0053 F7E9 BNE 0x0051
0054 9543 INC R20
0055 1740 CP R20,R16
0056 F3C0 BCS 0x004F
0057 940E00B5 CALL pop_gset2
0059 9508 RET
_eprom_read:
p_buff --> R20
number --> R18
addr --> R16
005A 940E00C0 CALL push_gset1
005C 814A LDD R20,Y+2
005D 815B LDD R21,Y+3
(0023) ;
(0024) }
(0025) }
(0026) }
(0027)
(0028) /*EEPROM读取函数*/
(0029) /*addr：地址；number：长度；p_buff：读出数据存放指针*/
(0030) void eprom_read(unsigned int addr, unsigned char number, unsigned char *p_buff) {
(0031)
(0032) while(EECR & (1 << EEWE));
005E 99E1 SBIC 0x1C,1
005F CFFE RJMP 0x005E
(0033)
(0034) EEARH = 0x00;
0060 2422 CLR R2
0061 BA2F OUT 0x1F,R2
0062 C009 RJMP 0x006C
(0035)
(0036) while(number --) {
(0037) EEARL = addr ++;
0063 0118 MOVW R2,R16
0064 5F0F SUBI R16,0xFF
0065 4F1F SBCI R17,0xFF
0066 BA2E OUT 0x1E,R2
(0038) EECR |= (1 << EERE);
0067 9AE0 SBI 0x1C,0
(0039) *p_buff++ = EEDR;
0068 B22D IN R2,0x1D
0069 01FA MOVW R30,R20
006A 9221 ST R2,Z+
006B 01AF MOVW R20,R30
006C 2E22 MOV R2,R18
006D 2433 CLR R3
006E 5021 SUBI R18,1
006F 2022 TST R2
0070 F791 BNE 0x0063
0071 940E00C3 CALL pop_gset1
0073 9508 RET
_eprom_write:
p_buff --> R20
number --> R18
addr --> R16
0074 940E00C0 CALL push_gset1
0076 814A LDD R20,Y+2
0077 815B LDD R21,Y+3
(0040) }
(0041) }
(0042)
(0043) /*EEPROM写入函数*/
(0044) /*addr：地址；number：长度；p_buff：写入数据存放指针*/
(0045) void eprom_write(unsigned int addr, unsigned char number, unsigned char *p_buff) {
(0046)
(0047) EEARH = 0x00;
0078 2422 CLR R2
0079 BA2F OUT 0x1F,R2
007A C00C RJMP 0x0087
(0048)
(0049) while(number --) {
(0050) while(EECR & (1 << EEWE));
007B 99E1 SBIC 0x1C,1
007C CFFE RJMP 0x007B
(0051) EEARL = addr ++;
007D 0118 MOVW R2,R16
007E 5F0F SUBI R16,0xFF
007F 4F1F SBCI R17,0xFF
0080 BA2E OUT 0x1E,R2
(0052) EEDR = *p_buff ++;
0081 01FA MOVW R30,R20
0082 9021 LD R2,Z+
0083 01AF MOVW R20,R30
0084 BA2D OUT 0x1D,R2
(0053) EECR |= (1 << EEMWE);
0085 9AE2 SBI 0x1C,2
(0054) EECR |= (1 << EEWE);
0086 9AE1 SBI 0x1C,1
0087 2E22 MOV R2,R18
0088 2433 CLR R3
0089 5021 SUBI R18,1
008A 2022 TST R2
008B F779 BNE 0x007B
008C 940E00C3 CALL pop_gset1
008E 9508 RET
_main:
temp --> Y+2
008F 9723 SBIW R28,3
(0055) }
(0056) }
(0057)
(0058) /*主函数*/
(0059) void main(void) {
(0060)
(0061) unsigned char temp;
(0062)
(0063) DDRA = 0x00; /*方向输入*/
0090 2422 CLR R2
0091 BA2A OUT 0x1A,R2
(0064) PORTA = 0xFF; /*打开上拉*/
0092 EF8F LDI R24,0xFF
0093 BB8B OUT 0x1B,R24
(0065) DDRB = 0xFF; /*方向输出*/
0094 BB87 OUT 0x17,R24
(0066) PORTB = 0xFF; /*电平设置*/
0095 BB88 OUT 0x18,R24
(0067) DDRC = 0x00;
0096 BA24 OUT 0x14,R2
(0068) PORTC = 0xFF;
0097 BB85 OUT 0x15,R24
(0069) DDRD = 0x00;
0098 BA21 OUT 0x11,R2
(0070) PORTD = 0xFF;
0099 BB82 OUT 0x12,R24
(0071)
(0072) delay_ms(250); /*启动延时*/
009A EF0A LDI R16,0xFA
009B DFAF RCALL _delay_ms
(0073) eprom_read(0x10, 0x01, &temp); /*读出记录*/
009C 01CE MOVW R24,R28
009D 9602 ADIW R24,2
009E 8399 STD Y+1,R25
009F 8388 STD Y+0,R24
00A0 E021 LDI R18,1
00A1 E100 LDI R16,0x10
00A2 E010 LDI R17,0
00A3 DFB6 RCALL _eprom_read
(0074) PORTB = ~temp; /*显示记录*/
00A4 802A LDD R2,Y+2
00A5 9420 COM R2
00A6 BA28 OUT 0x18,R2
(0075) temp ++; /*刷新记录*/
00A7 818A LDD R24,Y+2
00A8 5F8F SUBI R24,0xFF
00A9 838A STD Y+2,R24
(0076) eprom_write(0x10, 0x01, &temp); /*写入记录*/
00AA 01CE MOVW R24,R28
00AB 9602 ADIW R24,2
00AC 8399 STD Y+1,R25
00AD 8388 STD Y+0,R24
00AE E021 LDI R18,1
00AF E100 LDI R16,0x10
00B0 E010 LDI R17,0
00B1 DFC2 RCALL _eprom_write
(0077)
(0078) while (1) {
FILE: <library>
00B2 CFFF RJMP 0x00B2
00B3 9623 ADIW R28,3
00B4 9508 RET
pop_gset2:
00B5 E0E2 LDI R30,2
00B6 940C00C4 JMP pop
push_gset5:
00B8 92FA ST R15,-Y
00B9 92EA ST R14,-Y
push_gset4:
00BA 92DA ST R13,-Y
00BB 92CA ST R12,-Y
push_gset3:
00BC 92BA ST R11,-Y
00BD 92AA ST R10,-Y
push_gset2:
00BE 937A ST R23,-Y
00BF 936A ST R22,-Y
push_gset1:
00C0 935A ST R21,-Y
00C1 934A ST R20,-Y
00C2 9508 RET
pop_gset1:
00C3 E0E1 LDI R30,1
pop:
00C4 9149 LD R20,Y+
00C5 9159 LD R21,Y+
00C6 FDE0 SBRC R30,0
00C7 9508 RET
00C8 9169 LD R22,Y+
00C9 9179 LD R23,Y+
00CA FDE1 SBRC R30,1
00CB 9508 RET
00CC 90A9 LD R10,Y+
00CD 90B9 LD R11,Y+
00CE FDE2 SBRC R30,2
00CF 9508 RET
00D0 90C9 LD R12,Y+
00D1 90D9 LD R13,Y+
00D2 FDE3 SBRC R30,3
00D3 9508 RET
00D4 90E9 LD R14,Y+
00D5 90F9 LD R15,Y+
00D6 9508 RET
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -