bool GPRS::join()
{
char cmd[64];
char ipAddr[32];
//Select multiple connection
sendCmdAndWaitForResp("AT+CIPMUX=1\r\n","OK",DEFAULT_TIMEOUT,CMD);
//set APN
snprintf(cmd,sizeof(cmd),"AT+CSTT=\"%s\",\"%s\",\"%s\"\r\n",_apn,_userName,_passWord);
sendCmdAndWaitForResp(cmd, "OK", DEFAULT_TIMEOUT,CMD);
//Brings up wireless connection
sendCmdAndWaitForResp("AT+CIICR\r\n","OK",DEFAULT_TIMEOUT,CMD);
//Get local IP address
sendCmd("AT+CIFSR\r\n");
readBuffer(ipAddr,32,2);
if(NULL != strstr(ipAddr,"AT+CIFSR")) {
_ip = str_to_ip(ipAddr+12);
if(_ip != 0) {
return true;
}
}
return false;
}
int GPRS::send(int socket, const char * str, int len)
{
if (socket < 0 || socket > MAX_SOCK_NUM-1) {
return -1;
}
char cmd[32];
char resp[16];
delay(1000);
if(len > 0){
snprintf(cmd,sizeof(cmd),"AT+CIPSEND=%d,%d\r\n",socket,len);
if(0 != sendCmdAndWaitForResp(cmd,">",DEFAULT_TIMEOUT,CMD)) {
return false;
}
snprintf(resp,sizeof(resp),"%d, SEND OK",socket);
if(0 != sendCmdAndWaitForResp(str,resp,DEFAULT_TIMEOUT+2,DATA)) {
return -1;
}
}
return len;
}
bool GPRS::close(int socket)
{
char cmd[16];
char resp[16];
if (socket < 0 || socket > MAX_SOCK_NUM-1) {
return false;
}
// if not connected, return
if (is_connected(socket) == false) {
return true;
}
snprintf(cmd, sizeof(cmd),"AT+CIPCLOSE=%d\r\n",socket);
snprintf(resp,sizeof(resp),"%d, CLOSE OK",socket);
if(0 != sendCmdAndWaitForResp(cmd, resp, DEFAULT_TIMEOUT,CMD)) {
return false;
}
return true;
}
void SIM800::sendATTest(void)
{
sendCmdAndWaitForResp("AT\r\n","OK",DEFAULT_TIMEOUT);
}
