sim900 ftp error issue...

jagadeeshvulava said:

Hi all,
I'm working on SIM900 module to upload data to server ,
i'm using AT command set to upload data through GSM modem...
when i"m trying to upload data through termnal manually it's working fine....

when i'm trying to use the same procedure and flow to develep a firm ware(for STM32 controller)
it's not working fine....
i'm getting error for two commands...

AT+SAPBR=1,1... for this command some time i'm getting response as OK and some times ERROR...
after getting ERROR when i retry the same command multiple times it's giving same responce....

AT+FTPPUT=1... for this command i'm getting responce OK followed by +FTPPUT=1,1,1360.. normally... but many times i'm getting +FTPPUT=1,61 (or)
+FTPPUT=1,77 (or)+FTPPUT=1,72 many times..... after gettingthis error i've tried many time to up load data through controller it's giving same error responce.....
Is there any solution for this.......

thankYou......

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