USB118a U盘读写51汇编测试程序

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) * ******************************************************************************* ******************/ /*-------------------------------- 初始化程序 ---------------------------------*/ ORG 0000H AJMP MAIN ORG 0100H /*-------------------------------- 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 SETB TR1 ;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: LCALL DELAY LCALL DELAY ;延时 LCALL DELAY LCALL DELAY DJNZ R1,ML //检测U盘是否连接正常 USB_Detect: CLR EA ;关闭中断 CLR REN ;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 LCALL SEND ;调用发送子程序 SETB REN ;打开接收位 JNB RI,$ ;等待接收到数据 CLR RI MOV A,SBUF ;接收应答码 CJNE A,#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 JNB RI,$ ;等待接收到数据 CLR RI MOV A,SBUF ;接收应答信号 CJNE A,#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 //create file LCALL CRT JNB RI,$ ;等待接收到数据 CLR RI MOV A,SBUF ;接收应答码 CJNE A,#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 JNB RI,$ ;等待接收到数据 CLR RI MOV A,SBUF ;接收应答信号 CJNE A,#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 //open file LCALL OP JNB RI,$ ;等待接收到数据 CLR RI MOV A,SBUF ;接收应答码 CJNE A,#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 JNB RI,$ ;等待接收到数据 CLR RI MOV A,SBUF ;接收应答信号 CJNE A,#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 //write data LCALL WRT 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 LJMP USB_Detect ;检测到u盘未成功，重新检测 RET /*----------------------------------------- 函数功能:Create file -------------------------------------------*/ CRT: CLR REN ;关闭接收位 LCALL DELAY 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 LCALL SEND ;调用发送子程序 NOP NOP NOP SETB REN ;打开接收位 RET /*---------------------------------------- 函数功能:Open file ------------------------------------------*/ OP: CLR REN ;关闭接收位 LCALL DELAY 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 LCALL SEND ;调用发送子程序 NOP NOP NOP SETB REN ;打开接收位 RET /*----------------------------------------- 函数功能:Write data -------------------------------------------*/ WRT: CLR REN ;关闭接收位 LCALL DELAY 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 LCALL SEND ;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 LCALL SEND ;发送数据 NOP NOP SETB REN ;打开接收位 RET /*---------------------------------------------- 函数功能:ReMOVe file ------------------------------------------------*/ REM: CLR REN ;关闭接收位 LCALL DELAY MOV DPTR,#Remove ;设置删除命令初址 LCALL SEND ;发送命令 NOP NOP NOP SETB REN ;打开接收位 RET /*-------------------------------------------------- 函数功能:设置文件指针 ----------------------------------------------------*/ SFP: CLR REN ;关闭接收位 LCALL DELAY MOV R7,#66 MOV DPTR,#SetFilePointer ;设置文件指针命令初址 LCALL SEND ;发送命令 NOP NOP NOP SETB REN ;打开接收位 RET /*---------------------------------------------- 函数功能:Read file -----------------------------------------------*/ RAD: CLR REN ;关闭接收位 LCALL DELAY MOV R7,#66 MOV DPTR,#Read ;设置读命令初址 LCALL SEND ;发送命令 NOP NOP NOP SETB REN ;打开接收位 RET /*-------------------------------------------------- 函数功能:Make dir ---------------------------------------------------*/ MDIR: CLR REN ;关闭接收位 LCALL DELAY MOV R7, #66 MOV DPTR, #MakeDir ;设置建立目录初址 LCALL SEND ;发送命令 NOP NOP NOP SETB REN ;打开接收位 RET /*-------------------------------------------------- 函数功能:In dir ---------------------------------------------------*/ IND: CLR REN ;关闭接收位 LCALL DELAY MOV R7, #66 MOV DPTR, #InDir ;设置进入目录初址 LCALL SEND ;发送命令 NOP NOP NOP SETB REN ;打开接收位 RET /*-------------------------------------------------- 函数功能:Out dir ---------------------------------------------------*/ OUTD: CLR REN ;关闭接收位 LCALL DELAY MOV R7, #66 MOV DPTR, #OutDir ;设置返回目录初址 LCALL SEND ;发送命令 NOP NOP NOP SETB REN ;打开接收位 RET /*-------------------------------------------------- 函数功能:Root dir ---------------------------------------------------*/ ROOTD: CLR REN ;关闭接收位 LCALL DELAY MOV R7, #66 MOV DPTR, #RootDir ;设置返回根目录初址 LCALL SEND ;发送命令 NOP NOP NOP SETB REN ;打开接收位 RET /*------------------------------------------------- 函数功能:Send data --------------------------------------------------*/ SEND: MOV R0,#00H ;计数 LOOP: MOV A,R0 MOVC A,@A+DPTR ;查表得到要发送的数据 MOV SBUF,A ;发送数据 JNB TI,$ ;等待发送完毕 CLR TI INC R0 DJNZ R7,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 DJNZ R4,LOOP1 DJNZ R5,LOOP2 RET /*------------------------------------------------------------------------------------ 说明:以下是要发送的命令和数据 -------------------------------------------------------------------------------------*/ Detect: ;检测u盘命令 DB 0AAH,0BBH,01H DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H Create: ;建立TEST.TXT文件命令 DB 0AAH,0BBH,07H DB 54H,45H,53H,54H,20H,20H,20H,20H ;Create file name DB 54H,58H,54H ;File type DB 20H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 63H,4FH,0FDH,32H ;Create and revise file time DB 00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H Open: ;打开文件命令 DB 0AAH,0BBH,06H DB 54H,45H,53H,54H,20H,20H,20H,20H ;Open file name DB 54H,58H,54H ;File type DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H Write: ;写文件命令 DB 0AAH,0BBH,09H,00H DB 0FH,00H ;Write byte number DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H Read: ;读文件命令 DB 0AAH,0BBH,08H DB 08H,00H ;Read file length DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H ReMOVe: ;删除文件命令 DB 0AAH,0BBH,11H,00H DB 54H,45H,53H,54H,20H,20H,20H,20H ;Delete file name DB 54H,58H,54H ;File type DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H SetFilePointer: ;设置文件指针命令 DB 0AAH,0BBH,15H,00H DB 148,02H,00H,00H ;设置指针位置 DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H DB 20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H MakeDir: ;建立TEST目录 DB 0AAH,0BBH,32H DB 54H,45H,53H,54H,20H,20H,20H,20H,20H,20H,20H,10H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,0E3H,7EH,0FH,33H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H InDir: ;进入TEST目录 DB 0AAH,0BBH,54H,45H,53H,54H,20H,20H,20H,20H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H OutDir: ;返回上一层目录 DB 0AAH,0BBH,34H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H RootDir: ;返回根目录 DB 0AAH,0BBH,35H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H Date1: ;数据1 DB 41H,42H,43H,44H,45H,46H,47H,48H,49H,50H,61H,62H,63H,64H,65H DB 30H,31H,32H,33H,34H,35H,36H,37H,38H,39H,61H,62H,63H,64H,65H DB 30H,31H,32H,33H,34H,35H,36H,37H,38H,39H,61H,62H,63H,64H,65H DB 30H,31H,32H,33H,34H,35H,36H,37H,38H,39H,61H,62H,63H,64H,65H DB 30H,31H,32H,33H,0DH,0AH END