Example program for the Ethernet Shield V2.0 by SeeedStudio. The example gets an IP address via DHCP and then requests http://mbed.org/media/uploads/mbed_official/hello.txt
Dependencies: WIZ820ioInterface mbed
main.cpp@6:4bb23453ce91, 2014-07-25 (annotated)
- Committer:
- screamer
- Date:
- Fri Jul 25 12:29:05 2014 +0000
- Revision:
- 6:4bb23453ce91
- Parent:
- 4:14045b8557cb
Add Apache2 license compatible header
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
screamer | 6:4bb23453ce91 | 1 | /* Copyright (c) 2010-2011 mbed.org, MIT License |
screamer | 6:4bb23453ce91 | 2 | * |
screamer | 6:4bb23453ce91 | 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
screamer | 6:4bb23453ce91 | 4 | * and associated documentation files (the "Software"), to deal in the Software without |
screamer | 6:4bb23453ce91 | 5 | * restriction, including without limitation the rights to use, copy, modify, merge, publish, |
screamer | 6:4bb23453ce91 | 6 | * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the |
screamer | 6:4bb23453ce91 | 7 | * Software is furnished to do so, subject to the following conditions: |
screamer | 6:4bb23453ce91 | 8 | * |
screamer | 6:4bb23453ce91 | 9 | * The above copyright notice and this permission notice shall be included in all copies or |
screamer | 6:4bb23453ce91 | 10 | * substantial portions of the Software. |
screamer | 6:4bb23453ce91 | 11 | * |
screamer | 6:4bb23453ce91 | 12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
screamer | 6:4bb23453ce91 | 13 | * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
screamer | 6:4bb23453ce91 | 14 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
screamer | 6:4bb23453ce91 | 15 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
screamer | 6:4bb23453ce91 | 16 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
screamer | 6:4bb23453ce91 | 17 | */ |
screamer | 6:4bb23453ce91 | 18 | |
screamer | 0:1e952439b254 | 19 | #include "mbed.h" |
screamer | 0:1e952439b254 | 20 | #include "WIZ820ioInterface.h" |
screamer | 0:1e952439b254 | 21 | |
screamer | 0:1e952439b254 | 22 | Serial pc(USBTX, USBRX); |
screamer | 2:3b6c391a682d | 23 | |
screamer | 2:3b6c391a682d | 24 | /** |
screamer | 2:3b6c391a682d | 25 | * D11 - MOSI pin |
screamer | 2:3b6c391a682d | 26 | * D12 - MISO pin |
screamer | 2:3b6c391a682d | 27 | * D13 - SCK pin |
screamer | 2:3b6c391a682d | 28 | * D10 - SEL pin |
screamer | 3:2d0986d5542e | 29 | * NC - Reset pin; use D5 otherwise the shield might get into reset loop |
screamer | 2:3b6c391a682d | 30 | */ |
screamer | 3:2d0986d5542e | 31 | WIZ820ioInterface eth(D11, D12, D13, D10, D5); |
screamer | 0:1e952439b254 | 32 | |
screamer | 0:1e952439b254 | 33 | int main() |
screamer | 0:1e952439b254 | 34 | { |
screamer | 0:1e952439b254 | 35 | wait(3); |
screamer | 1:bb040724d21b | 36 | |
screamer | 1:bb040724d21b | 37 | // Initialize the interface. |
screamer | 1:bb040724d21b | 38 | // If no param is passed to init() then DHCP will be used on connect() |
screamer | 1:bb040724d21b | 39 | int s = eth.init(); |
screamer | 0:1e952439b254 | 40 | if (s != NULL) { |
screamer | 3:2d0986d5542e | 41 | printf(">>> Could not initialise. Halting!\n"); |
screamer | 0:1e952439b254 | 42 | exit(0); |
screamer | 0:1e952439b254 | 43 | } |
screamer | 0:1e952439b254 | 44 | |
screamer | 3:2d0986d5542e | 45 | printf(">>> Get IP address...\n"); |
screamer | 0:1e952439b254 | 46 | while (1) { |
screamer | 1:bb040724d21b | 47 | s = eth.connect(); // Connect to network |
screamer | 0:1e952439b254 | 48 | |
screamer | 0:1e952439b254 | 49 | if (s == false || s < 0) { |
screamer | 4:14045b8557cb | 50 | printf(">>> Could not connect to network! Retrying ...\n"); |
screamer | 0:1e952439b254 | 51 | wait(3); |
screamer | 0:1e952439b254 | 52 | } else { |
screamer | 0:1e952439b254 | 53 | break; |
screamer | 0:1e952439b254 | 54 | } |
screamer | 0:1e952439b254 | 55 | } |
screamer | 3:2d0986d5542e | 56 | printf(">>> Got IP address: %s\n", eth.getIPAddress()); |
screamer | 0:1e952439b254 | 57 | |
screamer | 1:bb040724d21b | 58 | // Prepare the http request to mbed.org |
screamer | 4:14045b8557cb | 59 | printf(">>> Open socket to mbed.org:80\n"); |
screamer | 0:1e952439b254 | 60 | char http_cmd[] = "GET /media/uploads/mbed_official/hello.txt HTTP/1.0\n\n"; |
screamer | 0:1e952439b254 | 61 | TCPSocketConnection sock; |
screamer | 4:14045b8557cb | 62 | |
screamer | 4:14045b8557cb | 63 | while (sock.connect("mbed.org", 80) == -1) { |
screamer | 4:14045b8557cb | 64 | printf(">>> Unable to open socket! Retrying ...\n"); |
screamer | 4:14045b8557cb | 65 | }; |
screamer | 4:14045b8557cb | 66 | |
screamer | 4:14045b8557cb | 67 | printf(">>> Request %s\n", http_cmd); |
screamer | 0:1e952439b254 | 68 | sock.send_all(http_cmd, sizeof(http_cmd)-1); |
screamer | 0:1e952439b254 | 69 | |
screamer | 1:bb040724d21b | 70 | // Read the response |
screamer | 0:1e952439b254 | 71 | char buffer[300]; |
screamer | 0:1e952439b254 | 72 | int ret; |
screamer | 0:1e952439b254 | 73 | while (true) { |
screamer | 0:1e952439b254 | 74 | ret = sock.receive(buffer, sizeof(buffer)-1); |
screamer | 0:1e952439b254 | 75 | if (ret <= 0) |
screamer | 0:1e952439b254 | 76 | break; |
screamer | 0:1e952439b254 | 77 | buffer[ret] = '\0'; |
screamer | 3:2d0986d5542e | 78 | printf(">>> Received %d chars from mbed.org:\n%s\n", ret, buffer); |
screamer | 0:1e952439b254 | 79 | } |
screamer | 4:14045b8557cb | 80 | |
screamer | 4:14045b8557cb | 81 | printf(">>> Close socket\n"); |
screamer | 0:1e952439b254 | 82 | sock.close(); |
screamer | 0:1e952439b254 | 83 | |
screamer | 1:bb040724d21b | 84 | // Disconnect from network |
screamer | 4:14045b8557cb | 85 | printf(">>> Disconnect from network\n"); |
screamer | 0:1e952439b254 | 86 | eth.disconnect(); |
screamer | 4:14045b8557cb | 87 | |
screamer | 0:1e952439b254 | 88 | return 0; |
screamer | 0:1e952439b254 | 89 | } |