9.9.1.1 +FS

This command performs a file system operation. The file system operation command is split into several sub-commands:

Load Sub-Command – The load sub-command initiates a file transfer from the DTE to the DCE.

List Sub-Command – The list sub-command produces a list of files present in the file system based on the file type specified.

Delete Sub-Command – The delete sub-command deletes a single file object of the type specified from the file system.

Info Sub-Command: – The info sub-command returns information on the file system.

Security – Default Security for the command is: GGGG

Table 9-59. Command Syntax
Command	Description	Security
`AT+FS=<OP>`	Operate on filesystem	`GGGG`
`AT+FS=<OP>,<FILETYPE>`	Operate on file types	`GGGG`
`AT+FS=<OP>,<FILETYPE>,<FILENAME>`	Operate on files	`GGGG`
`AT+FS=<OP>,<FILETYPE>,<TSFRPROT>,<FILENAME>,<FILELENGTH>`	Load file (single)	`GGGG`
`AT+FS=<OP>,<FILETYPE>,<TSFRPROT>`	Load file (batch)	`GGGG`

Table 9-60. Command Parameter Syntax
Parameter Name	Type	Description
`<OP>`	Integer	Operations: Load List Delete Information
`<FILETYPE>`	Integer	File type: Certificate Private Key
`<FILENAME>`	String	The name of the file
`<TSFRPROT>`	Integer	Transfer protocol X Modem + checksum X Modem + CRC16 X Modem 1K Y Modem
`<FILELENGTH>`	Integer	File length

Table 9-61. Response Syntax
Response	Description
`+FS:<OP>,<FILETYPE>,<FILENAME>`	List operation response
`+FS:<OP>,<FREESPACE>,<HANDLES>`	Information operation response

Table 9-62. Response Element Syntax
Element Name	Type	Description
`<OP>`	Integer	Operation 2 – List 4 – Information
`<FILETYPE>`	Integer	File type 1 – Certificate 2 – Private Key
`<FILENAME>`	String	The name of the file
`<FREESPACE>`	Integer	Free space
`<HANDLES>`	Integer	Free file handles