USB118a U盘读写51汇编测试程序 -

/************************************************************************************************
*
*U盘文件读写模块以字节为单位进行U盘文件读写。
*MCS-51单片机汇编示例程序
*硬件连接方式:4线制串口（电源，地，输入，输出）

本文引用地址: http://www.21ic.com/app/mcu/201806/764884.htm

*
*************************************************************************************************/

/*--------------------------------
初始化程序
---------------------------------*/
ORG0000H
AJMPMAIN
ORG0100H
/*--------------------------------
主函数
---------------------------------*/
MAIN:
MOV SP,#60H;设置堆栈指针
MOV TMOD,#20H;计数器1工作在方式2
MOV TH1,#0F3H;晶振频率为24MHz，波特率为9600
MOV TL1,#0F3H

; MOV TH1,#0FAH;晶振频率为11.0592MHZ,波特率为9600
; MOV TL1,#0FAH

MOV PCON,#80H;smod为1
SETBTR1;启动计时
MOV SCON,#40H

/*---------------------------------------------------------------------
延时是由于本人所用的 单片机 和USB118A是同一电源供电，
起初上电复位后由于USB118A要进行U盘检测，延时大约让检测完成即可发送指令
----------------------------------------------------------------------*/
MOV R1,#10H;闪烁10次
ML:
LCALLDELAY
LCALLDELAY;延时
LCALLDELAY
LCALLDELAY
DJNZR1,ML

//检测U盘是否连接正常
USB_Detect:
CLREA;关闭中断
CLRREN;关闭接收位
MOV DPTR,#Detect;检测U盘命令初址
MOV R7,#66;R7定义为将要发送的字节数
LCALLSEND;调用发送子程序
SETBREN;打开接收位

JNBRI,$;等待接收到数据
CLRRI
MOV A,SBUF;接收应答码
CJNEA,#04H,OUT1;04检测应答码，对则继续执行判断是否成功执行否则转错误处理

JNBRI,$;等待接收到数据
CLRRI
MOV A,SBUF;接收应答信号
CJNEA,#01H,OUT1;01判断是否成功执行，成功则继续执行否则转错误处理


//createfile
LCALLCRT
JNBRI,$;等待接收到数据
CLRRI
MOV A,SBUF;接收应答码
CJNEA,#0AH,OUT1;0A检测应答码，对则继续执行判断是否成功执行否则转错误处理

JNBRI,$;等待接收到数据
CLRRI
MOV A,SBUF;接收应答信号
CJNEA,#01H,OUT1;01判断是否成功执行，成功则继续执行否则转错误处理



//openfile
LCALLOP
JNBRI,$;等待接收到数据
CLRRI
MOV A,SBUF;接收应答码
CJNEA,#0DH,OUT1;0D检测应答码，对则继续执行判断是否成功执行否则转错误处理

JNBRI,$;等待接收到数据
CLRRI
MOV A,SBUF;接收应答信号
CJNEA,#01H,OUT1;01判断是否成功执行，成功则继续执行否则转错误处理

//writedata
LCALLWRT
SJMP$
MOV IE,#93H
RET

/*----------------------------------------------
函数功能：当为检测到U盘时，从新发送指令检测
-----------------------------------------------*/
OUT1:
MOV R7,#66;R7定义为将要发送的字节数
LJMPUSB_Detect;检测到u盘未成功，重新检测
RET


/*-----------------------------------------
函数功能：Createfile
-------------------------------------------*/
CRT:
CLRREN;关闭接收位
LCALLDELAY
MOV R7,#66;R7定义为将要发送的字节数
MOV DPTR,#Create;建立文件命令初址
LCALLSEND;调用发送子程序
NOP
NOP
NOP
SETBREN;打开接收位
RET


/*----------------------------------------
函数功能：Openfile
------------------------------------------*/
OP:
CLRREN;关闭接收位
LCALLDELAY
MOV R7,#66;R7定义为将要发送的字节数
MOV DPTR,#Open;打开文件命令初址
LCALLSEND;调用发送子程序
NOP
NOP
NOP
SETBREN;打开接收位
RET

/*-----------------------------------------
函数功能：Writedata
-------------------------------------------*/
WRT:
CLRREN;关闭接收位
LCALLDELAY
MOV R7,#66;R7定义为将要发送的字节数
MOV DPTR,#Write;写文件命令初址
LCALLSEND;发送数据

MOV R7,#15;此处是将要发送的写入数据的字节数
ON: MOV DPTR,#Date1;数据初地址
LCALLSEND;发送数据
NOP
NOP
SETBREN;打开接收位
RET

/*----------------------------------------------
函数功能：Re MOV efile
------------------------------------------------*/
REM:
CLRREN;关闭接收位
LCALLDELAY
MOV DPTR,#Remove;设置删除命令初址
LCALLSEND;发送命令
NOP
NOP
NOP
SETBREN;打开接收位
RET

/*--------------------------------------------------
函数功能：设置文件指针
----------------------------------------------------*/
SFP:
CLRREN;关闭接收位
LCALLDELAY
MOV R7,#66
MOV DPTR,#SetFilePointer;设置文件指针命令初址
LCALLSEND;发送命令
NOP
NOP
NOP
SETBREN;打开接收位
RET

/*----------------------------------------------
函数功能：Readfile
-----------------------------------------------*/
RAD:
CLRREN;关闭接收位
LCALLDELAY
MOV R7,#66
MOV DPTR,#Read;设置读命令初址
LCALLSEND;发送命令
NOP
NOP
NOP
SETBREN;打开接收位
RET
/*--------------------------------------------------
函数功能：Makedir
---------------------------------------------------*/
MDIR:
CLRREN;关闭接收位
LCALLDELAY
MOV R7,#66
MOV DPTR,#MakeDir;设置建立目录初址
LCALLSEND;发送命令
NOP
NOP
NOP
SETBREN;打开接收位
RET

/*--------------------------------------------------
函数功能：Indir
---------------------------------------------------*/
IND:
CLRREN;关闭接收位
LCALLDELAY
MOV R7,#66
MOV DPTR,#InDir;设置进入目录初址
LCALLSEND;发送命令
NOP
NOP
NOP
SETBREN;打开接收位
RET

/*--------------------------------------------------
函数功能：Outdir
---------------------------------------------------*/
OUTD:
CLRREN;关闭接收位
LCALLDELAY
MOV R7,#66
MOV DPTR,#OutDir;设置返回目录初址
LCALLSEND;发送命令
NOP
NOP
NOP
SETBREN;打开接收位
RET

/*--------------------------------------------------
函数功能：Rootdir
---------------------------------------------------*/
ROOTD:
CLRREN;关闭接收位
LCALLDELAY
MOV R7,#66
MOV DPTR,#RootDir;设置返回根目录初址
LCALLSEND;发送命令
NOP
NOP
NOP
SETBREN;打开接收位
RET

/*-------------------------------------------------
函数功能：Senddata
--------------------------------------------------*/
SEND:
MOV R0,#00H;计数
LOOP:
MOV A,R0
MOV CA,@A+DPTR;查表得到要发送的数据
MOV SBUF,A;发送数据
JNBTI,$;等待发送完毕
CLRTI
INCR0
DJNZR7,LOOP;R7发送字节数
RET

/*---------------------------------------------------
函数功能：延时子程序
-----------------------------------------------------*/
DELAY:
MOV R5,#0FFH
LOOP2:
MOV R4,#0FFH
LOOP1:
NOP
NOP
DJNZR4,LOOP1
DJNZR5,LOOP2
RET

/*------------------------------------------------------------------------------------
说明：以下是要发送的命令和数据
-------------------------------------------------------------------------------------*/
Detect:;检测u盘命令
DB0AAH,0BBH,01H
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H

Create:;建立TEST.TXT文件命令
DB0AAH,0BBH,07H
DB54H,45H,53H,54H,20H,20H,20H,20H;Createfilename
DB54H,58H,54H;Filetype
DB20H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB63H,4FH,0FDH,32H;Createandrevisefiletime
DB00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H

Open:;打开文件命令
DB0AAH,0BBH,06H
DB54H,45H,53H,54H,20H,20H,20H,20H;Openfilename
DB54H,58H,54H;Filetype
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H

Write:;写文件命令
DB0AAH,0BBH,09H,00H
DB0FH,00H;Writebytenumber
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H

Read:;读文件命令
DB0AAH,0BBH,08H
DB08H,00H;Readfilelength
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H

Re MOV e:;删除文件命令
DB0AAH,0BBH,11H,00H
DB54H,45H,53H,54H,20H,20H,20H,20H;Deletefilename
DB54H,58H,54H;Filetype
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H

SetFilePointer:;设置文件指针命令
DB0AAH,0BBH,15H,00H
DB148,02H,00H,00H;设置指针位置
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H
DB20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H

MakeDir:;建立TEST目录
DB0AAH,0BBH,32H
DB54H,45H,53H,54H,20H,20H,20H,20H,20H,20H,20H,10H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,0E3H,7EH,0FH,33H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H

InDir:;进入TEST目录
DB0AAH,0BBH,54H,45H,53H,54H,20H,20H,20H,20H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H

OutDir:;返回上一层目录
DB0AAH,0BBH,34H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H

RootDir:;返回根目录
DB0AAH,0BBH,35H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H
DB00H,00H

Date1:;数据1
DB41H,42H,43H,44H,45H,46H,47H,48H,49H,50H,61H,62H,63H,64H,65H
DB30H,31H,32H,33H,34H,35H,36H,37H,38H,39H,61H,62H,63H,64H,65H
DB30H,31H,32H,33H,34H,35H,36H,37H,38H,39H,61H,62H,63H,64H,65H
DB30H,31H,32H,33H,34H,35H,36H,37H,38H,39H,61H,62H,63H,64H,65H
DB30H,31H,32H,33H,0DH,0AH
END