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Seeed-Studio / GPRS_SIM900

library for GPRS shield with sim900 module.
MIT License
138 stars 96 forks source link

signal strength #17

Closed krlogan closed 4 years ago

krlogan commented 7 years ago

getSignalStrength(buffer) command is returning a 0 value despite a return of 15 from the AT+CSQ when manually entered

lanselambor commented 6 years ago

Maybe getSignalStrength was invoked before network being registered. Try to wait for network registration.

while(!gprs.isNetworkRegistered())
{
    delay(1000);
    Serial.println("Network has not registered yet!");
}