SARA-R4/N4 series-AT Commands Manual
UBX-17003787 - R09

16File System
Page 176 of 307
16.6.2î™–î™–î™–î™–Syntax
Type Syntax Response Example
Set AT+UDELFILE=<filename>[,<tag>] OK AT+UDELFILE="filename","USER"
OK
16.6.3î™–î™–î™–î™–Defined values
Parameter Type Description
<filename> String File name. For file system file name and data size limits see File system limits.
<tag> String The optional parameter <tag> specifies a different application file type. FILE TAGS
table lists the allowed <tag> strings.
16.7î™–î™–î™–î™–Partial download file +UDWNBLOCK
+UDWNBLOCK
SARA-R410M-02B SARA-R410M-52B SARA-R412MModules
SARA-N4
Syntax PIN required Settings saved Can be aborted Response time Error referenceAttributes
full No No No - +CME Error
16.7.1î™–î™–î™–î™–Description
Stores (writes) a file to the file system.
• The stream of bytes can be entered after the '>' prompt has been provided to the user. The file transfer is
terminated exactly when <size> bytes have been sent entered and either "OK" final result code or an error
result code is returned. The feed process cannot be interrupted i.e. the command mode is re-entered once
the user has provided the declared the number of bytes.
• If the file already exists, the data will be appended to the file already stored in the file system.
• If the data transfer stops, after 20 s the command is stopped and the "+CME ERROR: FFS TIMEOUT" error
result code (if +CMEE=2) is returned.
• If the module shuts down during the file storing, all bytes of the file will be deleted.
• If an error occurs during the file writing, the transfer is aborted and it is up to the user to delete the file.
Differently from +UDWNFILE command, this command allows the user to write only a portion of the file,
indicating the offset and amount of bytes.
16.7.2î™–î™–î™–î™–Syntax
Type Syntax Response Example
Set AT+UDWNBLOCK=<filename>,
<offset>,<size>,<filesize>[,<tag>]
>
<text>
OK AT+UDWNBLOCK="filename",0,36,
500,"USER"
>
The 36 downloaded bytes of the file!
OK
16.7.3î™–î™–î™–î™–Defined values
Parameter Type Description
<filename> String File name. For file system file name and data size limits see File system limits.
<offset> Number Offset in bytes from the beginning of the file.
<size> Number Number of bytes to be written starting from the <offset>.
<filesize> Number The size of the file to be written
<tag> String The optional parameter <tag> specifies a different application file type. FILE TAGS
table lists the allowed <tag> strings.
16.7.4î™–î™–î™–î™–Notes
• The <tag> parameter is supported only for "USER".
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