Questions:
, Wednesday, 8 June 2016 on product
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0voteA:
Initially GPS take time to connect, once it connect then automatically sends the value.
Posted byon Wednesday, 8 June 2016
, Thursday, 25 June 2015 on product
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0voteA:
Dear Mr.Sreenivasulu
Please find the code attached to receive the IMEI number.int8_t answer;
int x;
char SMS[200];
void setup(){
Serial.begin(9600);
delay(3000);
power_on();
delay(3000);
Serial.println("Network...");
while( (sendATcommand("AT+CREG?", "+CREG: 0,1", 500) ||
sendATcommand("AT+CREG?", "+CREG: 0,5", 500)) == 0 );
delay(300);
delay(3000);
sendATcommand("AT+CMGF=1", "OK", 1000); // sets the SMS mode to text
Serial.println("IMEI number...");
answer = sendATcommand("AT+CGSN", "", 2000); // reads the first SMS
if (answer == 1)
{
answer = 0;
while(Serial.available() == 0);
// this loop reads the data of the SMS
do{
// if there are data in the UART input buffer, reads it and checks for the asnwer
if(Serial.available() > 0){
SMS[x] = Serial.read();
x++;
// check if the desired answer (OK) is in the response of the module
if (strstr(SMS, "OK") != NULL)
{
answer = 1;
}
}
}while(answer == 0); // Waits for the asnwer with time out
SMS[x] = '\0';
Serial.print(SMS);
}
delay(1000);
}
void loop(){
}
void power_on(){
uint8_t answer=0;
// checks if the module is started
answer = sendATcommand("AT", "OK", 2000);
if (answer == 0)
{
// waits for an answer from the module
while(answer == 0){ // Send AT every two seconds and wait for the answer
answer = sendATcommand("AT", "OK", 2000);
}
}
}
int8_t sendATcommand(char* ATcommand, char* expected_answer, unsigned int timeout){
uint8_t x=0, answer=0;
char response[100];
unsigned long previous;
memset(response, '\0', 100); // Initialice the string
delay(100);
while( Serial.available() > 0) Serial.read(); // Clean the input buffer
Serial.println(ATcommand); // Send the AT command
x = 0;
previous = millis();
// this loop waits for the answer
do{
// if there are data in the UART input buffer, reads it and checks for the asnwer
if(Serial.available() != 0){
response[x] = Serial.read();
x++;
// check if the desired answer is in the response of the module
if (strstr(response, expected_answer) != NULL)
{
answer = 1;
}
}
// Waits for the asnwer with time out
}while((answer == 0) && ((millis() - previous) < timeout));
return answer;
}Posted byon Thursday, 25 June 2015