Gprs shield 2.0 stops responding

Hello

I have gprs shield 2.0 that is working with teensyduino, apparently after some time the gprs shield stops responding, trying to do a software reset doesn't appear to work (it wont power down/up the shield), only if I manually press the reset button it shuts down (and after that my software power on works).

this is my software power on code:
serverTurnOnPin=PIN_D9;

Code:

    digitalWrite(serverTurnOnPin,LOW);
    delay(1000);
    digitalWrite(serverTurnOnPin,HIGH);
    delay(5000);
    digitalWrite(serverTurnOnPin,LOW);
    delay(1000);

I am 100% sure that the teensy is not the problem here as I checked the D9 voltage, before the modem stops responding this shut off/on code works perfectly.

the usage of this modem is as a tcp constant connection with the following at commands:
AT+csclk=1 (I pull the dts pin when I want to send at commands as the modem is usually in sleep mode.
AT+CIPMUX=0
AT+CSTT=\"internet\"
AT+CIICR
AT+CIFSR
AT+CIPSTART

any advice?
Thanks

Statistics : Posted by israel.g.88 • on Fri May 15, 2015 4:14 pm • Replies 4 • Views 176

---