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AT Commands for  FTP Application

 

Command Description
AT+FTPPORT Set FTP control port
AT+FTPMODE Set active or passive FTP mode
AT+FTPTYPE Set the type of data to be transferred
AT+FTPPUTOPT Set FTP put type
AT+FTPCID Set FTP bearer profile identifier
AT+FTPREST Set resume broken download
AT+FTPSERV Set FTP server address
AT+FTPUN Set FTP user name
AT+FTPPW Set FTP password
AT+FTPGETNAME Set download file name
AT+FTPGETPATH Set download file path
AT+FTPPUTNAME Set upload file name
AT+FTPPUTPATH Set upload file path
AT+FTPGET Download file
AT+FTPPUT Set upload file
AT+FTPDELE Delete specified file in FTP server
AT+FTPSIZE Get the size of specified file in FTP server
AT+FTPSTATE Get the FTP state
AT+FTPEXTPUT Extend upload file
AT+FTPMKD Make directory on the remote machine
AT+FTPRMD Remove directory on the remote machine
AT+FTPLIST List contents of directory on the remote machine
AT+FTPEXTGET Extend download file
AT+FTPETPUT Upload File
AT+FTPETGET Download File
AT+FTPQUIT Quit current FTP session
AT+FTPRENAME Rename the Specified File on the Remote Machine

 

 

 

 

AT+FTPPORT      Set FTP Control Port

 

T) AT+FTPPORT=?

OK

R) AT+FTPPORT?

+FTPPORT: <value>

 

OK

Parameters

See Write Command

W) AT+FTPPORT=<value>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<value>      

The value of FTP Control port, from 1 to 65535.

Default value is 21

Parameter Saving Mode NO_SAVE
Reference

Note

Numbers above 65535 are illegal as the port identification fields are 16 bits long in the TCP header.

 

 

 

 

AT+FTPMODE      Set Active Or Passive FTP Mode

 

T) AT+FTPMODE=?

OK

R) AT+FTPMODE?

+FTPMODE: <value>

 

OK

Parameters

See Write Command

W) AT+FTPMODE=<value> 

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<value>      

0     Active FTP mode

1     Passive FTP mode

Parameter Saving Mode NO_SAVE

 

 

 

 

AT+FTPTYPE      Set The Type Of Data To Be Transferred

 

T) AT+FTPTYPE=?

OK

R) AT+FTPTYPE?

+FTPTYPE: <value>

 

OK

Parameters

See Write Command

W) AT+FTPTYPE=<value>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<value>      

“A”     For FTP ASCII sessions

“I”     For FTP Binary sessions

Parameter Saving Mode NO_SAVE
Reference

Note

When this value is set to A, all the data sent by the stack to the FTP server is made of 7 bits characters

(NVT-ASCII: the MSB is set to 0).

As a consequence binary data containing 8 bits characters will be corrupted during the transfer if the

FTPTYPE is set to A.

 

 

 

 

AT+FTPPUTOPT      Set FTP Put Type

  

T) AT+FTPPUTOPT=?

OK

R) AT+FTPPUTOPT?

+FTPPUTOPT: <value>

 

OK

Parameters

See Write Command

W) AT+FTPPUTOPT=<value>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<value>  

“APPE”     For appending file

“STOU”     For storing unique file

STOR”     For storing file

Parameter Saving Mode NO_SAVE

 

 

 

 

AT+FTPCID      Set FTP Bearer Profile Identifier

 

T) AT+FTPCID=?

OK

Parameters

See Write Command

R) AT+FTPCID?

+FTPCID: <value>

 

OK

Parameter

See Write Command

W) AT+FTPCID=<value>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<value>     Bearer profile identifier refer to AT+SAPBR

Parameter Saving Mode NO_SAVE

 

 

 

 

AT+FTPREST      Set Resume Broken Download

  

T) AT+FTPREST=?

OK

R) AT+FTPREST?

+FTPREST: <value>

 

OK

Parameters

See Write Command

W) AT+FTPREST=<value>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<value>     Broken point to be resumed

Parameter Saving Mode NO_SAVE

 

 

 

 

AT+FTPSERV      Set FTP Server Address

 

T) AT+FTPSERV=?

OK

R) AT+FTPSERV?

+FTPSERV: <value>

 

OK

Parameters

See Write Command

W) AT+FTPSERV=<value>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<value>     32-bit number in dotted-decimal notation (i.e. xxx.xxx.xxx.xxx) or alphanumeric

ASCII text string up to 49 characters if DNS is available

Parameter Saving Mode NO_SAVE

 

 

 

 

AT+FTPUN      Set FTP User Name

  

T) AT+FTPUN=?

OK

Parameters

See Write Command

R) AT+FTPUN?

+FTPUN: <value>

 

OK

Parameters

See Write Command

W) AT+FTPUN=<value>

OK

 

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<value>     Alphanumeric ASCII text string up to 49 characters.

Parameter Saving Mode NO_SAVE

 

 

 

 

AT+FTPPW      Set FTP Password

 

T) AT+FTPPW=?

OK

Parameters

See Write Command

R) AT+FTPPW?

+FTPPW: <value>

 

OK

Parameters

See Write Command

W) AT+FTPPW=<value>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<value>     Alphanumeric ASCII text string up to 49 characters.

Parameter Saving Mode NO_SAVE

 

 

 

 

AT+FTPGETNAME      Set Download File Name

  

T) AT+FTPGETNAME=?

OK

R) AT+FTPGETNAME?

+FTPGETNAME: <value>

 

OK

Parameters

See Write Command

W) AT+FTPGETNAME=<value>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<value>     Alphanumeric ASCII text string up to 99 characters

Parameter Saving Mode NO_SAVE

 

 

 

 

AT+FTPGETPATH      Set Download File Path

 

T) AT+FTPGETPATH=?

OK

R) AT+FTPGETPATH?

+FTPGETPATH: <value>

 

OK

Parameters

See Write Command

W) AT+FTPGETPATH=<value>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<value>     Alphanumeric ASCII text string up to 255 characters

Parameter Saving Mode NO_SAVE

 

 

 

 

AT+FTPPUTNAME      Set Upload File Name 

   

T) AT+FTPPUTNAME=?

OK

R) AT+FTPPUTNAME?

+FTPPUTNAME: <value>

 

OK

Parameters

See Write Command

W) AT+FTPPUTNAME=<value>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<value>     Alphanumeric ASCII text string up to 99 characters

Parameter Saving Mode NO_SAVE

 

 

 

 

AT+FTPPUTPATH      Set Upload File Path

 

T) AT+FTPPUTPATH=?

OK

R) AT+FTPPUTPATH?

+FTPPUTPATH: <value>

 

OK

Parameters

See Write Command

W) AT+FTPPUTPATH=<value>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<value>     Alphanumeric ASCII text string up to 255 characters

Parameter Saving Mode NO_SAVE

 

 

 

 

AT+FTPGET      Download File

  

T) AT+FTPGET=?

OK

W) AT+FTPGET=<mode>[,<reqlength>]

If mode is 1 and it is a successful FTP get session:

OK

 

+FTPGET: 1,1

 

If data transfer finished:

+FTPGET: 1,0

 

If mode is 1 and it is a failed FTP get session:

OK

 

+FTPGET: 1,<error>

 

If mode is 2:

+FTPGET: 2,<cnflength>

012345678…

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<mode>    

1     For opening FTP get session

2     For reading FTP download data.

<reqlength>     Requested number of data bytes (1-1460)to be read

<cnflength>

Confirmed number of data bytes to be read, which may be less than <length>.

0 indicates that no data can be read.

<error>     

61     Net error

62     DNS error

63     Connect error

64     Timeout

65     Server error

66     Operation not allow

70     Replay error

71     User error

72     Password error

73     Type error

74     Rest error

75     Passive error

76     Active error

77     Operate error

78     Upload error

79     Download error

80     Manual quit

Parameter Saving Mode NO_SAVE
Max Response Time 75 seconds(In case no response is received from server)
Reference

Note

When “+FTPGET: 1,1” is shown, then use “AT+FTPGET=2,<reqlength>” to read data.

If the module still has unread data, “+FTPGET: 1,1” will be shown again in a certain time.

 

 

 

 

AT+FTPPUT      Set Upload File

 

T) AT+FTPPUT=?

OK

W) AT+FTPPUT=<mode>[,<reqlength>]

If mode is 1 and it is a successful FTP get session:

OK

 

+FTPPUT: 1,1,<maxlength>

 

If mode is 1 and it is a failed FTP get session:

OK

 

+FTPPUT: 1,<error>

 

If mode is 2 and <reqlength> is not 0

+FTPPUT: 2,<cnflength>

…… //Input data

OK

+FTPPUT: 1,1,1360

 

If mode is 2 and <reqlength> is 0, it will respond OK, and FTP session will be closed

OK

 

If data transfer finished.

+FTPPUT: 1,0

 

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<mode>          

1     For opening FTP put session

2     For writing FTP upload data.

<reqlength>     Requested number of data bytes(0-<maxlength>) to be transmitted

<cnflength>     Confirmed number of data bytes to be transmitted

<maxlength>     The max length of data can be sent at a time. It depends on the network status.

<error>     See “AT+FTPGET

Parameter Saving Mode NO_SAVE
Max Response Time 75 seconds(In case no response is received from server)
Reference

Note

When “+FTPPUT: 1,1,<maxlength>” is shown, then use “AT+FTPPUT=2, <reqlength>” to write data.

 

 

 

 

AT+FTPDELE      Delete Specified File In FTP Server

 

T) AT+FTPDELE=?

OK

Parameters

See Execution Command

E) AT+FTPDELE

If successed:

OK

 

+FTPDELE: 1,0

 

If failed:

OK

 

+FTPDELE: 1,<error>

 

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<error>     See “AT+FTPGET

Parameter Saving Mode NO_SAVE
Max Response Time 75 seconds(In case no response is received from server)
Reference

Note

The file to be deleted is specified by the “AT+FTPGETNAME” and “AT+FTPGETPATH” commands.

 

 

 

 

AT+FTPSIZE      Get The Size Of Specified File In FTP Server

 

T) AT+FTPSIZE=?

OK

Parameters

See Execution Command

E) AT+FTPSIZE

If successed:

OK

 

+FTPSIZE: 1,0,<size>

 

If failed:

OK

 

+FTPSIZE: 1,<error>,0

 

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<error>     See “AT+FTPGET

<size>     The file size. Unit: byte

Parameter Saving Mode NO_SAVE
Max Response Time 75 seconds(In case no response is received from server)
Reference

Note

The file is specified by the “AT+FTPGETNAME” and “AT+FTPGETPATH” commands.

 

 

 

 

 

AT+FTPSTATE      Get The FTP State

 

T) AT+FTPSTATE=?

OK

Parameters

See Execution Command

E) AT+FTPSTATE

+FTPSTATE: <state>

 

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<state>

0     Idle

1     In the FTP session, including FTPGET, FTPPUT, FTPDELE and FTPSIZE operation.

Parameter Saving Mode NO_SAVE

 

 

 

 

AT+FTPEXTPUT      Extend Upload File

 

T) AT+FTPEXTPUT=?

OK

W) AT+FTPEXTPUT=<mode>[,<pos>,<len>,<time out>]

If mode is 0 or 1

OK

 

If mode is 2

+FTPEXTPUT: <address>,<len>

…… //Input data

OK

 

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<mode>      

0     use default FTPPUT method

1     use extend FTPPUT method

2     send data to RAM through serial port, then FTPPUT method will get the data from RAM.

<pos>     data offset address 0-300k

<len>     data length 0-300k

<timeout>     timeout value of serial port. 1000ms-1000000ms

<file name>     File name length should less or equal 50 characters.

<err>     See “AT+FTPGET”

Parameter Saving Mode NO_SAVE
Max Response Time 75 seconds(In case no response is received from server)
Reference

Note

When extend FTPPUT mode is activated, input data then execute “AT+FTPPUT=1” to transmit, after session

is complete, if successful, it returns “+FTPPUT: 1,0”, otherwise it returns “+FTPPUT: 1,<error>”, <error> see

“AT+FTPGET”.

 

 

 

 

AT+FTPMKD      Make Directory On The Remote Machine

  

T) AT+FTPMKD=?

OK

E) AT+FTPMKD

If success:

OK

 

+FTPMKD: 1,0

 

If failed:

OK

 

+FTPMKD: 1,<error>

 

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<error>     See “AT+FTPGET

Parameter Saving Mode NO_SAVE
Max Response Time 75 seconds(In case no response is received from server)
Reference

Note

The created folder is specified by the “AT+FTPGETPATH” command.

 

 

 

 

AT+FTPRMD      Remove Directory On The Remote Machine

 

T) AT+FTPRMD=?

OK

E) AT+FTPRMD

If success:

OK

 

+FTPRMD: 1,0

 

If failed:

OK

 

+FTPRMD: 1,<error>

 

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<error>     See “AT+FTPGET

Parameter Saving Mode NO_SAVE
Max Response Time 75 seconds(In case no response is received from server)
Reference

Note

The removed folder is specified by the “AT+FTPGETPATH” command.

 

 

 

 

AT+FTPLIST      List Contents Of Directory On The Remote Machine

 

T) AT+FTPLIST=?

OK

W) AT+FTPLIST=<mode>[,<reqlength>]

If mode is 1 and it is a successful FTP get session:

OK

 

+FTPLIST: 1,1

 

If data transfer is finished:

+FTPLIST: 1,0

 

If mode is 1 and it is a failed FTP get session:

OK

 

+FTPLIST: 1,<error>

 

If mode is 2:

+FTPLIST: 2,<cnflength> 012345678…

OK

 

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<mode>

1     For opening FTP get file list session

2     For reading FTP file list

<reqlength>     Requested number of data bytes (1-1460) to be read

<cnflength>

Confirmed number of data bytes to be read, which may be less than <reqlength>.

0 indicates that no data can be read.

<error>     See “AT+FTPGET

Parameter Saving Mode NO_SAVE
Max Response Time 75 seconds(In case no response is received from server)
Reference

Note

When “+FTPLIST: 1,1” is shown, “AT+FTPLIST=2,<reqlength>” can be used to read data.

If the module still has unread data, “+FTPLIST: 1,1” will be shown again in a certain time.

If using “AT+FTPGETPATH” to set a directory path, it will returned the files contents under this directory;

if set a file path, it will return the information of the file specified.

 

 

 

 

AT+FTPEXTGET      Extend Download File

 

T) AT+FTPEXTGET=?

OK

Parameters

See Write Command

R) AT+FTPEXTGET?

+FTPEXTGET: <mode>,<length>

OK

Parameters

See Write Command

 

 

 

 

 

 

 

 

 

 

 

W)

1) if mode is 0 or 1 AT+FTPEXTGET=<mode>

 

2) if mode is 3

AT+FTPEXTGET=<mode>,<pos>,<len>

If mode is 0:

OK

 

If mode is 1 and successfully download data:

OK

 

+FTPEXTGET: 1,0

 

If mode is 1 and failed to download data:

OK

 

+FTPEXTGET: 1,<error>

 

If mode is 3 and successfully download data:

+FTPEXTGET: 3,<length> 0123456…

OK

If <file name> is already exist in flash:

ERROR

Parameters

<mode>      

0     use default FTPGET method.

1     open extend FTP get session and download data to RAM.

3     read the downloaded data from RAM, then output it to the serial port.

<file name>     File name length should less than or equal to 50 characters.

<pos>     data offset should less than <length>.

<len>     data length 0-300k.

<length>     The length of the downloaded data from the remote machine.

<error>     See “AT+FTPGET”

Parameter Saving Mode NO_SAVE
Max Response Time 75 seconds(In case no response is received from server)
Reference

Note

The data it can get is 300k at most.

 

 

 

 

AT+FTPETPUT      Upload File

 

T) AT+FTPETPUT=?

OK

Parameters

See Write Command

W) AT+FTPETPUT=<mode> 

If mode is 1 and successfully open PUT session:

OK

 

+FTPETPUT: 1,1

 

If mode is 1 and failed to open PUT session:

OK

 

+FTPETPUT: 1,<error>

 

If mode is 2:

+FTPETPUT: 2,1

//Input data

<ETX> //To notify the module that all data has been sent, switch from data mode to command mode

OK

 

If data transfer finished:

+FTPETPUT: 1,0

 

If data transfer failed:

+FTPETPUT: 1,<error>

Parameters

<mode>      

1     For opening FTPETPUT session.

2     For writing FTP upload data.

<error>     See “AT+FTPEXTGET”

Parameter Saving Mode NO_SAVE
Reference

Note

The TCP/IP stack will only interpret an <ETX> character as the end of the file to be transferred if

it’s not preceded by a <DLE> character.

As a consequence the attached host must send <ETX> characters preceded by <DLE> characters

and it must also code <DLE> characters in <DLE><DLE>.

 

 

 

 

AT+FTPETGET      Download File

 

T) AT+FTPETGET=?

OK

Parameters

See Write Command

W) AT+FTPETGET=<mode> 

If mode is 1 and successfully open GET session:

OK

 

+FTPETGET: 1,1

 

If data transfer finished:

0123456789…

<ETX> //To notify the user that all data transfer has been finished, switch from data mode to command mode.

 

+FTPETGET: 1,0

 

If mode is 1 and failed to download data:

OK

 

+FTPETGET: 1,<error>

Parameters

<mode>      

1     Open FTPETGET session and download data.

<error>     See “AT+FTPEXTGET”

Parameter Saving Mode NO_SAVE
Reference

Note

Each <ETX> character present in the payload data of the FTP flow will be coded by the TCP/IP stack on the

serial port as <DLE><ETX>.

Each <DLE> character will be coded as <DLE><DLE>.

The attached host must then decode the FTP flow to remove these escape characters.

 

 

 

 

AT+FTPQUIT      Quit Current FTP Session

 

T) AT+FTPQUIT=?

OK

E) AT+FTPQUIT

If the current operation is GET method:

OK

 

+FTPGET: 1,80

 

If the current operation is PUT method:

OK

 

+FTPPUT: 1,80

 

If FTP is in idle state:

ERROR

Parameter Saving Mode NO_SAVE

 

 

 

 

AT+FTPRENAME      Rename The Specified File On The Remote Machine

 

T) AT+FTRENAME=?

OK

Parameters

See Execution Command

E) AT+FTPRENAME

If success:

OK

+FTPRENAME: 1,0

 

If failed:

OK

 

+FTPRENAME: 1,<error>

 

If error is related to ME functionality:

+CME ERROR: <err>

Parameter

<error>     See “AT+FTPGET”

Parameter Saving Mode NO_SAVE
Reference

Note

The file is specified by the “AT+FTPGETNAME” and “AT+FTPGETPATH” commands.

The new file name is set by “AT+FTPPUTNAME” and “AT+FTPPUTPATH” command.

 

 

 

 

AT+FTPMDTM      Get The Last Modification Timestamp Of Specified File On The Remote Machine

 

T) AT+FTPMDTM=?

OK

Parameters

See Execution Command

E) AT+FTPMDTM

If success:

OK

 

+FTPMDTM: 1,0,<timestamp>

 

If failed:

OK

 

+FTPMDTM: 1,<error>

 

If error is related to ME functionality:

+CME ERROR: <err>

Parameter

<error>     See “AT+FTPGET”

<timestamp>     The last modification timestamp of the specified file.

Parameter Saving Mode NO_SAVE
Reference

Note

The file is specified by the “AT+FTPGETNAME” and “AT+FTPGETPATH” commands.

 

 

 

 

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