圣龙扬特-AVR电子
标题: BASCOM-AVR利用AVR-DOS库读写SD卡 [打印本页]
作者: 箫天 时间: 2013-3-2 13:49
标题: BASCOM-AVR利用AVR-DOS库读写SD卡
根据http://members.aon.at/voegel/index.html网站上提供的资料,试验了用BASCOM读写SD卡,完全可以把SD卡当作磁盘来操作,与VB/QB语法兼容,编程非常简单。
AVR-DOS介绍 Features:
· Read and write ASCII-Files
· Read and write Binary-Files
· Drivers available for Compact Flash Cards, Hard disk, MMC, SD etc.
· Completly integrated in BASCOM-AVR Compiler
· QB/VB compatible syntax
· Completly written in AVR-Assembler (fast and compact)
It works with:
· DOS-FAT16 and FAT32 formatted partitions
· Files in Root directory and sub directories
· Short DOS File names (8.3)
· Sector Size of 512 Bytes (nearly all CF-Cards and HD)
· Linear sector addressing (LBA-Mode). (all newer CF-Cards and HD). C/H/S-Mode of old HD is not supported.
Please note: AVR-DOS is only free for non commercial use. For commercial use, or when you are interested in ASM-Code and complete documentation please check License directives
Functions:
Here is a list of all in BASCOM-AVR integrated statements, which uses AVR-DOS functionality.
Disk/Directory:
· InitFileSystem (<Partition#>)
· DiskSize
· DiskFree
· Kill <FileName>
· Dir ([ <FileName> ])
· FileLen ([ <FileName> ])
· FileDateTime ([ <FileName> ])
· FileDate ([ <FileName> ])
· FileTime ([ <FileName> ])
· GetAttr ([ <FileName> ])
· Name<OldFileName> As <NewFileName>
· ChDir <PathName>])
· MkDir <PathName>])
· RmDir <PathName>])
File create, open, read, write, close:
· FreeFile
· Open <FileName> For Input/Output/Append/Binary as #<File#>
· Close <File#>
· Flush [<File#>]
· Print #<File#>, Variable1; Variable2; …
· Write #<File#>, Variable1, Variable2, …
· Input #<File#>, Variable1, Variable2, …
· Line Input #<File#>, StringVariable
· Get #<File#>, <Variable> [,<Position>]
· Put #<File#>, <Variable> [,<Position>]
· Seek #<File#> [,<New Position>]
Infos about opened files:
· EOF (#<File#>)
· LOC (#<File#>)
· LOF (#<File#>)
· FileAttr (#<File#>)
Others:
· Bload <FileName>, <SRAM-Address>
· Bsave <FileName>, <SRAM-Address>, <Length>
SD卡与AVR数据信号电平转换示意图:
[attach]148[/attach]
我做的转换电路板:Vcc使用2个二极管降压。
[attach]149[/attach]
BASCOM源程序下载:
[attach]150[/attach]
作者: avr_freshman 时间: 2013-3-2 15:31
老大好作品啊,我要慢慢研究了,
作者: SengChuary 时间: 2013-4-10 16:55
收藏了,下来研究一下。
作者: yyj679 时间: 2021-2-9 13:07
感谢admin无私奉献,先下载学习
作者: yyj679 时间: 2021-2-9 13:26
老大,粗略看了下,CONFIG_AVR-DOS.bas、Config_MMC.bas这2个似乎是配置用的,但是怎么用不明白,请指教。M8是否可用?
作者: 箫天 时间: 2021-2-17 20:06
yyj679 发表于 2021-2-9 13:26
老大,粗略看了下,CONFIG_AVR-DOS.bas、Config_MMC.bas这2个似乎是配置用的,但是怎么用不明白,请指教。M ...
主程序里引用。
[attach]972[/attach]
作者: yyj679 时间: 2024-8-24 06:35
虽然发现完了,还是要谢谢箫天
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