Hi I used your main.cpp. Thank you so much for your superfast reply.

Here is the main.cpp that I used:

1. include "mbed.h"
2. include "GPRSInterface.h"

/ On many platforms USBTX/USBRX overlap with serial on D1/D0 pins and enabling the below will interrupt the communication.

• You can use an LCD display to print the values or store them on an SD card etc.
• / Serial pc(USBTX, USBRX);

/**

• D1 - TX pin (RX on the WiFi side)
• D0 - RX pin (TX on the WiFi side)
• 115200 - Baud rate
• "apn" - APN name
• "username" - APN username
• "password" - APN passowrd
• / GPRSInterface eth(D1, D0, 115200, "eshppd", "NULL", "NULL");

int main() { wait(3);

Initialize the interface.

If no param is passed to init() then DHCP will be used on connect()

int s = eth.init();

if (s != NULL) {

printf(">>> Could not initialise. Halting!\n");

exit(0);

}

printf(">>> Get IP address...\n");

while (1) {

s = eth.connect(); Connect to network

if (s == false || s < 0) {

printf(">>> Could not connect to network. Retrying!\n");

wait(3);

} else {

break;

}

}

printf(">>> Got IP address: %s\n", eth.getIPAddress());

Prepare the http request to mbed.org

char http_cmd[] = "GET /media/uploads/mbed_official/hello.txt HTTP/1.0\n\n";

TCPSocketConnection sock;

sock.connect("mbed.org", 80);

sock.send_all(http_cmd, sizeof(http_cmd)-1);

printf(">>> Sent request to mbed.org\n");

Read the response

char buffer[300];

int ret;

while (true) {

ret = sock.receive(buffer, sizeof(buffer)-1);

if (ret <= 0)

break;

buffer[ret] = '\0';

printf(">>> Received %d chars from mbed.org:\n%s\n", ret, buffer);

}

sock.close();

Disconnect from network

eth.disconnect();

return 0;

}

APN that I used is MaxMobile Prepaid Card APN.

I found this APN from this website:

https://www.starhub.com/business/support/internet-ip-solutions/faqs/prepaid-mobile-broadband.html

I am from Ngee Ann Polytechnic. I am currrently doing my final year project. I would appreciate it very much.

Thank you so much Sir. Looking forward to your reply. :D

Regards

Dorothy