Shields / Mbed 2 deprecated Seeed_GPRS_Shield

Example program for the SeeedStudio GPRS Shield V2.0, based on UART serial port connectivity (D0/D1 pins). This program connects to GPRS APN, obtains an IP address and downloads http://mbed.org/media/uploads/mbed_official/hello.txt

Dependencies:   GPRSInterface mbed

main.cpp@2:352f28222f92, 2015-02-13 (annotated)

Committer:
screamer
Date:
Fri Feb 13 09:42:28 2015 +0000
Revision:
2:352f28222f92
Parent:
1:1204f875bde4 
Update mbed library.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
screamer 1:1204f875bde4 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
screamer 1:1204f875bde4 2 *
screamer 1:1204f875bde4 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
screamer 1:1204f875bde4 4 * and associated documentation files (the "Software"), to deal in the Software without
screamer 1:1204f875bde4 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
screamer 1:1204f875bde4 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
screamer 1:1204f875bde4 7 * Software is furnished to do so, subject to the following conditions:
screamer 1:1204f875bde4 8 *
screamer 1:1204f875bde4 9 * The above copyright notice and this permission notice shall be included in all copies or
screamer 1:1204f875bde4 10 * substantial portions of the Software.
screamer 1:1204f875bde4 11 *
screamer 1:1204f875bde4 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
screamer 1:1204f875bde4 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
screamer 1:1204f875bde4 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
screamer 1:1204f875bde4 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
screamer 1:1204f875bde4 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
screamer 1:1204f875bde4 17 */
screamer 1:1204f875bde4 18
screamer 0:b7a3f482f82c 19 #include "mbed.h"
screamer 0:b7a3f482f82c 20 #include "GPRSInterface.h"
screamer 0:b7a3f482f82c 21
screamer 0:b7a3f482f82c 22 /** On many platforms USBTX/USBRX overlap with serial on D1/D0 pins and enabling the below will interrupt the communication.
screamer 0:b7a3f482f82c 23 * You can use an LCD display to print the values or store them on an SD card etc.
screamer 0:b7a3f482f82c 24 */
screamer 0:b7a3f482f82c 25 //Serial pc(USBTX, USBRX);
screamer 0:b7a3f482f82c 26
screamer 0:b7a3f482f82c 27 /**
screamer 0:b7a3f482f82c 28 * D1 - TX pin (RX on the WiFi side)
screamer 0:b7a3f482f82c 29 * D0 - RX pin (TX on the WiFi side)
screamer 0:b7a3f482f82c 30 * 115200 - Baud rate
screamer 0:b7a3f482f82c 31 * "apn" - APN name
screamer 0:b7a3f482f82c 32 * "username" - APN username
screamer 0:b7a3f482f82c 33 * "password" - APN passowrd
screamer 0:b7a3f482f82c 34 */
screamer 0:b7a3f482f82c 35 GPRSInterface eth(D1, D0, 115200, "apn", "username", "password");
screamer 0:b7a3f482f82c 36
screamer 0:b7a3f482f82c 37 int main()
screamer 0:b7a3f482f82c 38 {
screamer 0:b7a3f482f82c 39 wait(3);
screamer 0:b7a3f482f82c 40
screamer 0:b7a3f482f82c 41 // Initialize the interface.
screamer 0:b7a3f482f82c 42 // If no param is passed to init() then DHCP will be used on connect()
screamer 0:b7a3f482f82c 43 int s = eth.init();
screamer 0:b7a3f482f82c 44 if (s != NULL) {
screamer 0:b7a3f482f82c 45 printf(">>> Could not initialise. Halting!\n");
screamer 0:b7a3f482f82c 46 exit(0);
screamer 0:b7a3f482f82c 47 }
screamer 0:b7a3f482f82c 48
screamer 0:b7a3f482f82c 49 printf(">>> Get IP address...\n");
screamer 0:b7a3f482f82c 50 while (1) {
screamer 0:b7a3f482f82c 51 s = eth.connect(); // Connect to network
screamer 0:b7a3f482f82c 52
screamer 0:b7a3f482f82c 53 if (s == false || s < 0) {
screamer 0:b7a3f482f82c 54 printf(">>> Could not connect to network. Retrying!\n");
screamer 0:b7a3f482f82c 55 wait(3);
screamer 0:b7a3f482f82c 56 } else {
screamer 0:b7a3f482f82c 57 break;
screamer 0:b7a3f482f82c 58 }
screamer 0:b7a3f482f82c 59 }
screamer 0:b7a3f482f82c 60 printf(">>> Got IP address: %s\n", eth.getIPAddress());
screamer 0:b7a3f482f82c 61
screamer 0:b7a3f482f82c 62 // Prepare the http request to mbed.org
screamer 0:b7a3f482f82c 63 char http_cmd[] = "GET /media/uploads/mbed_official/hello.txt HTTP/1.0\n\n";
screamer 0:b7a3f482f82c 64 TCPSocketConnection sock;
screamer 0:b7a3f482f82c 65 sock.connect("mbed.org", 80);
screamer 0:b7a3f482f82c 66 sock.send_all(http_cmd, sizeof(http_cmd)-1);
screamer 0:b7a3f482f82c 67 printf(">>> Sent request to mbed.org\n");
screamer 0:b7a3f482f82c 68
screamer 0:b7a3f482f82c 69 // Read the response
screamer 0:b7a3f482f82c 70 char buffer[300];
screamer 0:b7a3f482f82c 71 int ret;
screamer 0:b7a3f482f82c 72 while (true) {
screamer 0:b7a3f482f82c 73 ret = sock.receive(buffer, sizeof(buffer)-1);
screamer 0:b7a3f482f82c 74 if (ret <= 0)
screamer 0:b7a3f482f82c 75 break;
screamer 0:b7a3f482f82c 76 buffer[ret] = '\0';
screamer 0:b7a3f482f82c 77 printf(">>> Received %d chars from mbed.org:\n%s\n", ret, buffer);
screamer 0:b7a3f482f82c 78 }
screamer 0:b7a3f482f82c 79 sock.close();
screamer 0:b7a3f482f82c 80
screamer 0:b7a3f482f82c 81 // Disconnect from network
screamer 0:b7a3f482f82c 82 eth.disconnect();
screamer 0:b7a3f482f82c 83 return 0;
screamer 0:b7a3f482f82c 84 }