spi.lis

AVR单片机的电机测速程序

                        .module spi.c
                        .area text(rom, con, rel)
 0000                   .dbfile C:\DOCUME~1\www\桌面\motor_ce\spi.c
 0000                   .dbfunc e Spi_Init _Spi_Init fV
                        .even
 0000           _Spi_Init::
 0000                   .dbline -1
 0000                   .dbline 4
 0000           ; #include "includes.h"
 0000           ; 
 0000           ; void Spi_Init(void)
 0000           ; {
 0000                   .dbline 5
 0000           ;  SPCR = (1<<SPE)|(1<<MSTR)|(1<<SPR0);; //setup SPI
 0000 81E5              ldi R24,81
 0002 8DB9              out 0xd,R24
 0004                   .dbline 5
 0004                   .dbline 6
 0004           ;  SPSR = 0x00; //setup SPI
 0004 2224              clr R2
 0006 2EB8              out 0xe,R2
 0008                   .dbline -2
 0008           L1:
 0008                   .dbline 0 ; func end
 0008 0895              ret
 000A                   .dbend
 000A                   .dbfunc e Spi_Byte_Tx _Spi_Byte_Tx fV
 000A           ;          cdata -> R16
                        .even
 000A           _Spi_Byte_Tx::
 000A                   .dbline -1
 000A                   .dbline 9
 000A           ; }
 000A           ; void Spi_Byte_Tx(unsigned char cdata)
 000A           ; {
 000A                   .dbline 10
 000A           ; SPDR=cdata;
 000A 0FB9              out 0xf,R16
 000C           L3:
 000C                   .dbline 12
 000C                   .dbline 12
 000C           L4:
 000C                   .dbline 11
 000C           ; while(!(SPSR&(1<<SPIF)))
 000C 779B              sbis 0xe,7
 000E FECF              rjmp L3
 0010                   .dbline -2
 0010           L2:
 0010                   .dbline 0 ; func end
 0010 0895              ret
 0012                   .dbsym r cdata 16 c
 0012                   .dbend
 0012                   .dbfunc e Spi_Port_Init _Spi_Port_Init fV
                        .even
 0012           _Spi_Port_Init::
 0012                   .dbline -1
 0012                   .dbline 15
 0012           ; {}
 0012           ; }
 0012           ; void Spi_Port_Init(void)
 0012           ; {
 0012                   .dbline 16
 0012           ; DDRB  = 0xFF;
 0012 8FEF              ldi R24,255
 0014 87BB              out 0x17,R24
 0016                   .dbline 17
 0016           ; PORTB = 0xff;//PB4=1,AVR为主机，且MOSI输出
 0016 88BB              out 0x18,R24
 0018                   .dbline -2
 0018           L6:
 0018                   .dbline 0 ; func end
 0018 0895              ret
 001A                   .dbend