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Gsm sim900 continous data sending issue

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sneha.tm

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Hi al,
Im using GSM SIM900 modem to interface to the microcontroller STM32F100
It gets connected to the server and sent the data.Im sending data continuously with a time interval of 5 minutes or less.The next time after 5min i gave the AT command AT+CIPCLOSE,AT+CIPSHUT,AT+CIPSTART.... etc to connect to the server.But sometimes it shows response ERROR and after a delay only it gives response CONNECT OK.So im not able to send data that time.But this error not occuring always.Please help me to solve this.
 

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