AT Commands for File System
| No | Command | Description |
| C1501 | AT+CFSINIT | Get Flash Data Buffer |
| C1502 | AT+CFSWFILE | Write File to the Flash Buffer Allocated by CFSINIT |
| C1503 | AT+CFSRFILE | Read File from Flash |
| C1504 | AT+CFSDFILE | Delete the File from the Flash |
| C1505 | AT+CFSGFIS | Get File Size |
| C1506 | AT+CFSREN | Rename a file |
| C1507 | AT+CFSGFRS | Get the size of file system |
| C1508 | AT+CFSTERM | Free the Flash Buffer Allocated by CFSINIT |
| C1509 | AT+CBAINIT | Initialize the ap backup file system |
| C1510 | AT+CBALIST | Set the files which want to backup |
| C1511 | AT+CBAPPS | Start to backup ap file system allocated by CBAINIT and CBALIST |
| C1512 | AT+CBART | Restore the file into ap file system |
C1501 AT+CFSINIT Get Flash Data Buffer
| E) AT+CFSINIT |
OK or ERROR or +CME ERROR: <err> |
C1502 AT+CFSWFILE Write File To The Flash Buffer Allocated By CFSINIT
| T) AT+CFSWFILE=? |
+CFSWFILE: (0-3),”fileName”,(0-1),(1-10240),(100-10000)
OK |
|
Parameters See Write Command |
|
| W) AT+CFSWFILE=<index>,<file name>,<mode>,<file size>,<input time> |
OK or ERROR or +CME ERROR: <err> |
|
Parameters <index> Directory of AP filesystem: 0 “/custapp/” 1 “/fota/” 2 “/datatx/” 3 “/customer/” <file name> File name length should less or equal 50 characters <mode> 0 If the file already existed, write the data at the beginning of the file. 1 If the file already existed, add the data at the end of the file. <file size> File size should be less than 10240 bytes. <input time> Millisecond, should send file during this period or you can’t send file when timeout. The value should be less than 10000 ms. |
C1503 AT+CFSRFILE Read File From Flash
| T) AT+CFSRFILE=? |
+CFSRFILE: (0-3),”fileName”,(0-1),(1-10240),(0-filesize)
OK |
|
Parameters See Write Command |
|
| W) AT+CFSRFILE=<index>,<file name>,<mode>,<file size>,<position> |
OK or ERROR or +CME ERROR: <err> |
|
Parameters <index> Directory of AP filesystem: 0 “/custapp/” 1 “/fota/” 2 “/datatx/” 3 “/customer/” <file name> File name length should be less than or equal to 50 characters, <mode> 0 Read data at the beginning of the file . 1 Read data at the <position> of the file . <file size> The size of the file that you want to read should be less than 10240. <position> The starting position that will be read in the file. When <write mode>=0, <position> is invalid. Read data from the beginning to the end of the file. When <write mode>=1, <position> is valid. Read data from the <position> to the end of the file. |
C1504 AT+CFSDFILE Delete The File From The Flash
| T) AT+CFSDFILE=? |
+CFSDFILE: (0-3),”fileName”
OK |
|
Parameters See Write Command |
|
| W) AT+CFSDFILE=<index>,<file name> |
OK or ERROR or +CME ERROR: <err> |
|
Parameters <index> Directory of AP filesystem: 0 “/custapp/” 1 “/fota/” 2 “/datatx/” 3 “/customer/” <file name> File name length should be less than or equal to 50 characters. |
C1505 AT+CFSGFIS Get File Size
| T) AT+CFSGFIS=? |
+CFSGFIS: (0-3),”fileName”
OK |
|
Parameters See Write Command |
|
| W) AT+CFSGFIS=<index>,<file name> |
ERROR or +CME ERROR: <err> or +CFSGFIS: <n> OK |
|
Parameters <file name> File name length should be less than or equal to 50 characters. <n> File size <index> Directory of AP filesystem: 0 “/custapp/” 1 “/fota/” 2 “/datatx/” 3 “/customer/” |
C1506 AT+CFSREN Rename A File
| T) AT+CFSREN=? |
+CFSREN: (0-3),”old_name”,”new_name”
OK |
|
Parameters See Write Command |
|
|
W) AT+CFSREN=<index>, <old file name>,<new file name> |
OK or ERROR or +CME ERROR: <err> |
|
Parameters <index> Directory of AP filesystem: 0 “/custapp/” 1 “/fota/” 2 “/datatx/” 3 “/customer/” <old file name> File name length should be less than or equal to 50 characters. <new file name> File name length should be less than or equal to 50 characters. |
C1507 AT+CFSGFRS Get The Size Of File System
| R) AT+CFSGFRS? |
ERROR or +CME ERROR: <err> or +CFSGFRS: <n>
OK |
|
Parameters <n> the size of file system |
C1508 AT+CFSTERM Free The Flash Buffer Allocated By CFSINIT
| E) AT+CFSTERM |
OK or ERROR or +CME ERROR: <err> |
C1509 AT+CBAINIT Initialize The AP Backup File System
| E) AT+CBAINIT |
OK or ERROR or +CME ERROR: <err> |
| Max Response Time | 3 seconds |
C1510 AT+CBALIST Set The Files Which Want To Backup
| R) AT+CBALIST? |
+CBALIST: <index>,<filename>
OK |
|
Parameters See Write Command |
|
| W) AT+CBALIST=<index>,<filename> |
OK If error is related to ME functionality: +CME ERROR: <err> |
|
Parameters <index> 0-9 The file index. 10 Disable log 11 Enable log <file name> File name length should less than or equal to 80 characters. |
|
| Parameter Saving Mode | NO_SAVE |
C1511 AT+CBAPPS Start To Backup AP File System Allocated By CBAINIT And CBALIST
| E) AT+CBAPPS |
OK or ERROR or +CME ERROR: <err> |
| Max Response Time | 3 seconds |
C1512 AT+CBART Restore The File Into AP File System
| E) AT+CBART |
OK or ERROR or +CME ERROR: <err> |
| Max Response Time | 3 seconds |
| Reference |
Note The files should have been backup into ap file system. |
WiFi IoT Module
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5G/LTE/CAT-M1/NB-IoT
