spi.lst

自己总结的avr自学实验小程序

__text_start:
__start:
    002F E5CF      LDI	R28,0x5F
    0030 E0D4      LDI	R29,4
    0031 BFCD      OUT	0x3D,R28
    0032 BFDE      OUT	0x3E,R29
    0033 51C0      SUBI	R28,0x10
    0034 40D0      SBCI	R29,0
    0035 EA0A      LDI	R16,0xAA
    0036 8308      STD	Y+0,R16
    0037 2400      CLR	R0
    0038 E6EA      LDI	R30,0x6A
    0039 E0F0      LDI	R31,0
    003A E010      LDI	R17,0
    003B 36EA      CPI	R30,0x6A
    003C 07F1      CPC	R31,R17
    003D F011      BEQ	0x0040
    003E 9201      ST	R0,Z+
    003F CFFB      RJMP	0x003B
    0040 8300      STD	Z+0,R16
    0041 E5E4      LDI	R30,0x54
    0042 E0F0      LDI	R31,0
    0043 E6A0      LDI	R26,0x60
    0044 E0B0      LDI	R27,0
    0045 E010      LDI	R17,0
    0046 35EE      CPI	R30,0x5E
    0047 07F1      CPC	R31,R17
    0048 F021      BEQ	0x004D
    0049 95C8      LPM
    004A 9631      ADIW	R30,1
    004B 920D      ST	R0,X+
    004C CFF9      RJMP	0x0046
    004D 940E007C  CALL	_main
_exit:
    004F CFFF      RJMP	_exit
_delay_ms:
  i                    --> R20
  time                 --> R16
    0050 940E00A0  CALL	push_gset1
FILE: D:\AVR\我的程序\同步串口SPI实验\cfg.h
(0001) /*******************************
(0002) *程序名称：功能函数集
(0003) *设    计：萧联珠
(0004) *日    期：2007-11-20
(0005) ********************************/
(0006) #include <iom16v.h>
(0007) 
(0008) /*延时子程序*/
(0009) void delay_ms(int time)
(0010) {
(0011)  int i;
(0012)  for(;time>0;time--)
    0052 C00A      RJMP	0x005D
(0013)   for(i=0;i<1000;i++);
    0053 2744      CLR	R20
    0054 2755      CLR	R21
    0055 5F4F      SUBI	R20,0xFF
    0056 4F5F      SBCI	R21,0xFF
    0057 3E48      CPI	R20,0xE8
    0058 E0E3      LDI	R30,3
    0059 075E      CPC	R21,R30
    005A F3D4      BLT	0x0055
    005B 5001      SUBI	R16,1
    005C 4010      SBCI	R17,0
    005D 2422      CLR	R2
    005E 2433      CLR	R3
    005F 1620      CP	R2,R16
    0060 0631      CPC	R3,R17
    0061 F38C      BLT	0x0053
    0062 940E00A3  CALL	pop_gset1
    0064 9508      RET
(0014) }
(0015) 
(0016) /*端口初始化*/
(0017) void port_init() 
(0018) {
(0019)   DDRD|=(1<<DDD5);  //配置PD5口为输出
_port_init:
    0065 9A8D      SBI	0x11,5
(0020)   PORTD|=(1<<PD5);  //PD5口的初始值为"1"
    0066 9A95      SBI	0x12,5
    0067 9508      RET
(0021) }
(0022) 
(0023) /*SPI接口初始化*/
(0024) void SPI_MasterInit(void) {
(0025) 
(0026) 	DDRB |= (1<<PB5) | (1<<PB7);		/* 设置MOSI 和SCK 为输出，其他为输入 */
_SPI_MasterInit:
    0068 B387      IN	R24,0x17
    0069 6A80      ORI	R24,0xA0
    006A BB87      OUT	0x17,R24
(0027) 	SPCR = (1<<SPE) | (1<<MSTR)
    006B E583      LDI	R24,0x53
    006C B98D      OUT	0x0D,R24
    006D 9508      RET
(0028) 		| (1<<SPR1) | (1<<SPR0);		/* 使能SPI主机模式，设置时钟速率为fck/128 */
(0029) }
(0030) 
(0031) /*SPI数据发送*/
(0032) void SPI_MasterTransmit(unsigned char i) 
(0033) {
(0034) 	
(0035) 	SPDR = i;							/* 启动数据传输 */
_SPI_MasterTransmit:
  i                    --> R16
    006E B90F      OUT	0x0F,R16
(0036) 	while (!(SPSR & (1<<SPIF)));	/* 等待传输结束 */
    006F 9B77      SBIS	0x0E,7
    0070 CFFE      RJMP	0x006F
    0071 9508      RET
_SPI_595_Out:
  i                    --> R20
    0072 940E00A0  CALL	push_gset1
    0074 2F40      MOV	R20,R16
(0037) }
(0038) 
(0039) /*595数据输出*/
(0040) void SPI_595_Out(unsigned char i)
(0041) {
(0042) 	PORTB &= ~(1 << 4);					/*准备锁存*/
    0075 98C4      CBI	0x18,4
(0043) 	SPI_MasterTransmit(i);
    0076 2F04      MOV	R16,R20
    0077 DFF6      RCALL	_SPI_MasterTransmit
(0044) 	PORTB |= (1 << 4);					/*锁存数据*/
    0078 9AC4      SBI	0x18,4
    0079 940E00A3  CALL	pop_gset1
    007B 9508      RET
FILE: D:\AVR\我的程序\同步串口SPI实验\main.c
(0001) /***********************************
(0002) *实验目的：熟悉SPI操作及数码管显示
(0003) *设    计：萧联珠
(0004) *日    期：2007-11-20
(0005) ************************************/
(0006) #include <iom16v.h>
(0007) #include "cfg.h"
(0008) 
(0009) unsigned char disp[10] = {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};
(0010) 
(0011) 
(0012) void main(void) 
(0013) {
(0014) 
(0015) 	unsigned char i = 0;
_main:
  i                    --> R20
  flag_num             --> R20
    007C 2744      CLR	R20
(0016) 	unsigned int flag_num;
(0017) 
(0018) 	DDRB = 0xFF;						/*PB口设置为输出*/
    007D EF8F      LDI	R24,0xFF
    007E BB87      OUT	0x17,R24
(0019) 	PORTB = 0xF0;						/*选通数码管*/
    007F EF80      LDI	R24,0xF0
    0080 BB88      OUT	0x18,R24
(0020) 
(0021) 	SPI_MasterInit();
    0081 DFE6      RCALL	_SPI_MasterInit
    0082 C013      RJMP	0x0096
(0022) 	
(0023) 	while (1) 
(0024) 	{  
(0025) 	   for(flag_num=0;flag_num<10;flag_num++)
    0083 2744      CLR	R20
    0084 2755      CLR	R21
    0085 C00C      RJMP	0x0092
(0026) 	   {
(0027) 		SPI_595_Out(disp[flag_num]);
    0086 E680      LDI	R24,0x60
    0087 E090      LDI	R25,0
    0088 01FA      MOVW	R30,R20
    0089 0FE8      ADD	R30,R24
    008A 1FF9      ADC	R31,R25
    008B 8100      LDD	R16,Z+0
    008C DFE5      RCALL	_SPI_595_Out
(0028) 		delay_ms(200);
FILE: <library>
    008D EC08      LDI	R16,0xC8
    008E E010      LDI	R17,0
    008F DFC0      RCALL	_delay_ms
    0090 5F4F      SUBI	R20,0xFF
    0091 4F5F      SBCI	R21,0xFF
    0092 304A      CPI	R20,0xA
    0093 E0E0      LDI	R30,0
    0094 075E      CPC	R21,R30
    0095 F380      BCS	0x0086
    0096 CFEC      RJMP	0x0083
    0097 9508      RET
push_gset5:
    0098 92FA      ST	R15,-Y
    0099 92EA      ST	R14,-Y
push_gset4:
    009A 92DA      ST	R13,-Y
    009B 92CA      ST	R12,-Y
push_gset3:
    009C 92BA      ST	R11,-Y
    009D 92AA      ST	R10,-Y
push_gset2:
    009E 937A      ST	R23,-Y
    009F 936A      ST	R22,-Y
push_gset1:
    00A0 935A      ST	R21,-Y
    00A1 934A      ST	R20,-Y
    00A2 9508      RET
pop_gset1:
    00A3 E0E1      LDI	R30,1
pop:
    00A4 9149      LD	R20,Y+
    00A5 9159      LD	R21,Y+
    00A6 FDE0      SBRC	R30,0
    00A7 9508      RET
    00A8 9169      LD	R22,Y+
    00A9 9179      LD	R23,Y+
    00AA FDE1      SBRC	R30,1
    00AB 9508      RET
    00AC 90A9      LD	R10,Y+
    00AD 90B9      LD	R11,Y+
    00AE FDE2      SBRC	R30,2
    00AF 9508      RET
    00B0 90C9      LD	R12,Y+
    00B1 90D9      LD	R13,Y+
    00B2 FDE3      SBRC	R30,3
    00B3 9508      RET
    00B4 90E9      LD	R14,Y+
    00B5 90F9      LD	R15,Y+
    00B6 9508      RET