Mike van Doorn / Mbed OS mbed-os-example-wifi

hoi

main.cpp@77:b74ac6641a3e, 2018-08-31 (annotated)

Committer:
mbed_official
Date:
Fri Aug 31 12:15:03 2018 +0100
Revision:
77:b74ac6641a3e
Parent:
74:af086eac5e99
Child:
91:dab9882e2b49
Remove external drivers



.

Commit copied from https://github.com/ARMmbed/mbed-os-example-wifi

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:857719181846 1 /* WiFi Example
mbed_official 0:857719181846 2 * Copyright (c) 2016 ARM Limited
mbed_official 0:857719181846 3 *
mbed_official 0:857719181846 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 0:857719181846 5 * you may not use this file except in compliance with the License.
mbed_official 0:857719181846 6 * You may obtain a copy of the License at
mbed_official 0:857719181846 7 *
mbed_official 0:857719181846 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 0:857719181846 9 *
mbed_official 0:857719181846 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 0:857719181846 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 0:857719181846 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 0:857719181846 13 * See the License for the specific language governing permissions and
mbed_official 0:857719181846 14 * limitations under the License.
mbed_official 0:857719181846 15 */
mbed_official 0:857719181846 16
mbed_official 0:857719181846 17 #include "mbed.h"
mbed_official 0:857719181846 18 #include "TCPSocket.h"
mbed_official 0:857719181846 19
mbed_official 71:a0fbcc153b55 20 WiFiInterface *wifi;
mbed_official 21:b2f2f6a840b4 21
mbed_official 0:857719181846 22 const char *sec2str(nsapi_security_t sec)
mbed_official 0:857719181846 23 {
mbed_official 0:857719181846 24 switch (sec) {
mbed_official 0:857719181846 25 case NSAPI_SECURITY_NONE:
mbed_official 0:857719181846 26 return "None";
mbed_official 0:857719181846 27 case NSAPI_SECURITY_WEP:
mbed_official 0:857719181846 28 return "WEP";
mbed_official 0:857719181846 29 case NSAPI_SECURITY_WPA:
mbed_official 0:857719181846 30 return "WPA";
mbed_official 0:857719181846 31 case NSAPI_SECURITY_WPA2:
mbed_official 0:857719181846 32 return "WPA2";
mbed_official 0:857719181846 33 case NSAPI_SECURITY_WPA_WPA2:
mbed_official 0:857719181846 34 return "WPA/WPA2";
mbed_official 0:857719181846 35 case NSAPI_SECURITY_UNKNOWN:
mbed_official 0:857719181846 36 default:
mbed_official 0:857719181846 37 return "Unknown";
mbed_official 0:857719181846 38 }
mbed_official 0:857719181846 39 }
mbed_official 0:857719181846 40
mbed_official 37:3a31525e2971 41 int scan_demo(WiFiInterface *wifi)
mbed_official 0:857719181846 42 {
mbed_official 0:857719181846 43 WiFiAccessPoint *ap;
mbed_official 0:857719181846 44
mbed_official 35:052c1ba06ce7 45 printf("Scan:\n");
mbed_official 0:857719181846 46
mbed_official 0:857719181846 47 int count = wifi->scan(NULL,0);
mbed_official 0:857719181846 48
mbed_official 66:2cf02c7d430c 49 if (count <= 0) {
mbed_official 66:2cf02c7d430c 50 printf("scan() failed with return value: %d\n", count);
mbed_official 66:2cf02c7d430c 51 return 0;
mbed_official 66:2cf02c7d430c 52 }
mbed_official 66:2cf02c7d430c 53
mbed_official 0:857719181846 54 /* Limit number of network arbitrary to 15 */
mbed_official 0:857719181846 55 count = count < 15 ? count : 15;
mbed_official 0:857719181846 56
mbed_official 0:857719181846 57 ap = new WiFiAccessPoint[count];
mbed_official 0:857719181846 58 count = wifi->scan(ap, count);
mbed_official 66:2cf02c7d430c 59
mbed_official 66:2cf02c7d430c 60 if (count <= 0) {
mbed_official 66:2cf02c7d430c 61 printf("scan() failed with return value: %d\n", count);
mbed_official 66:2cf02c7d430c 62 return 0;
mbed_official 66:2cf02c7d430c 63 }
mbed_official 66:2cf02c7d430c 64
mbed_official 66:2cf02c7d430c 65 for (int i = 0; i < count; i++) {
mbed_official 35:052c1ba06ce7 66 printf("Network: %s secured: %s BSSID: %hhX:%hhX:%hhX:%hhx:%hhx:%hhx RSSI: %hhd Ch: %hhd\n", ap[i].get_ssid(),
mbed_official 0:857719181846 67 sec2str(ap[i].get_security()), ap[i].get_bssid()[0], ap[i].get_bssid()[1], ap[i].get_bssid()[2],
mbed_official 0:857719181846 68 ap[i].get_bssid()[3], ap[i].get_bssid()[4], ap[i].get_bssid()[5], ap[i].get_rssi(), ap[i].get_channel());
mbed_official 0:857719181846 69 }
mbed_official 35:052c1ba06ce7 70 printf("%d networks available.\n", count);
mbed_official 0:857719181846 71
mbed_official 0:857719181846 72 delete[] ap;
mbed_official 37:3a31525e2971 73 return count;
mbed_official 0:857719181846 74 }
mbed_official 0:857719181846 75
mbed_official 0:857719181846 76 void http_demo(NetworkInterface *net)
mbed_official 0:857719181846 77 {
mbed_official 0:857719181846 78 TCPSocket socket;
mbed_official 24:323569a565ec 79 nsapi_error_t response;
mbed_official 0:857719181846 80
mbed_official 35:052c1ba06ce7 81 printf("Sending HTTP request to www.arm.com...\n");
mbed_official 0:857719181846 82
mbed_official 0:857719181846 83 // Open a socket on the network interface, and create a TCP connection to www.arm.com
mbed_official 66:2cf02c7d430c 84 response = socket.open(net);
mbed_official 66:2cf02c7d430c 85 if(0 != response) {
mbed_official 66:2cf02c7d430c 86 printf("socket.open() failed: %d\n", response);
mbed_official 66:2cf02c7d430c 87 return;
mbed_official 66:2cf02c7d430c 88 }
mbed_official 66:2cf02c7d430c 89
mbed_official 66:2cf02c7d430c 90 response = socket.connect("api.ipify.org", 80);
mbed_official 24:323569a565ec 91 if(0 != response) {
mbed_official 35:052c1ba06ce7 92 printf("Error connecting: %d\n", response);
mbed_official 24:323569a565ec 93 socket.close();
mbed_official 24:323569a565ec 94 return;
mbed_official 24:323569a565ec 95 }
mbed_official 0:857719181846 96
mbed_official 0:857719181846 97 // Send a simple http request
mbed_official 66:2cf02c7d430c 98 char sbuffer[] = "GET / HTTP/1.1\r\nHost: api.ipify.org\r\nConnection: close\r\n\r\n";
mbed_official 33:12f0df4d51d7 99 nsapi_size_t size = strlen(sbuffer);
mbed_official 66:2cf02c7d430c 100
mbed_official 66:2cf02c7d430c 101 // Loop until whole request send
mbed_official 66:2cf02c7d430c 102 while(size) {
mbed_official 24:323569a565ec 103 response = socket.send(sbuffer+response, size);
mbed_official 24:323569a565ec 104 if (response < 0) {
mbed_official 35:052c1ba06ce7 105 printf("Error sending data: %d\n", response);
mbed_official 24:323569a565ec 106 socket.close();
mbed_official 24:323569a565ec 107 return;
mbed_official 24:323569a565ec 108 }
mbed_official 66:2cf02c7d430c 109 size -= response;
mbed_official 66:2cf02c7d430c 110 printf("sent %d [%.*s]\n", response, strstr(sbuffer, "\r\n")-sbuffer, sbuffer);
mbed_official 24:323569a565ec 111 }
mbed_official 0:857719181846 112
mbed_official 66:2cf02c7d430c 113 // Receieve a simple http response and print out the response line
mbed_official 0:857719181846 114 char rbuffer[64];
mbed_official 24:323569a565ec 115 response = socket.recv(rbuffer, sizeof rbuffer);
mbed_official 24:323569a565ec 116 if (response < 0) {
mbed_official 35:052c1ba06ce7 117 printf("Error receiving data: %d\n", response);
mbed_official 24:323569a565ec 118 } else {
mbed_official 35:052c1ba06ce7 119 printf("recv %d [%.*s]\n", response, strstr(rbuffer, "\r\n")-rbuffer, rbuffer);
mbed_official 24:323569a565ec 120 }
mbed_official 0:857719181846 121
mbed_official 0:857719181846 122 // Close the socket to return its memory and bring down the network interface
mbed_official 0:857719181846 123 socket.close();
mbed_official 0:857719181846 124 }
mbed_official 0:857719181846 125
mbed_official 0:857719181846 126 int main()
mbed_official 0:857719181846 127 {
mbed_official 37:3a31525e2971 128 int count = 0;
mbed_official 37:3a31525e2971 129
mbed_official 67:ebff4a8d228d 130 printf("WiFi example\n");
mbed_official 67:ebff4a8d228d 131
mbed_official 67:ebff4a8d228d 132 #ifdef MBED_MAJOR_VERSION
mbed_official 67:ebff4a8d228d 133 printf("Mbed OS version %d.%d.%d\n\n", MBED_MAJOR_VERSION, MBED_MINOR_VERSION, MBED_PATCH_VERSION);
mbed_official 67:ebff4a8d228d 134 #endif
mbed_official 0:857719181846 135
mbed_official 71:a0fbcc153b55 136 wifi = WiFiInterface::get_default_instance();
mbed_official 72:b4761c52cc91 137 if (!wifi) {
mbed_official 72:b4761c52cc91 138 printf("ERROR: No WiFiInterface found.\n");
mbed_official 72:b4761c52cc91 139 return -1;
mbed_official 72:b4761c52cc91 140 }
mbed_official 71:a0fbcc153b55 141
mbed_official 71:a0fbcc153b55 142 count = scan_demo(wifi);
mbed_official 37:3a31525e2971 143 if (count == 0) {
mbed_official 37:3a31525e2971 144 printf("No WIFI APNs found - can't continue further.\n");
mbed_official 37:3a31525e2971 145 return -1;
mbed_official 37:3a31525e2971 146 }
mbed_official 0:857719181846 147
mbed_official 37:3a31525e2971 148 printf("\nConnecting to %s...\n", MBED_CONF_APP_WIFI_SSID);
mbed_official 71:a0fbcc153b55 149 int ret = wifi->connect(MBED_CONF_APP_WIFI_SSID, MBED_CONF_APP_WIFI_PASSWORD, NSAPI_SECURITY_WPA_WPA2);
mbed_official 0:857719181846 150 if (ret != 0) {
mbed_official 66:2cf02c7d430c 151 printf("\nConnection error: %d\n", ret);
mbed_official 0:857719181846 152 return -1;
mbed_official 0:857719181846 153 }
mbed_official 0:857719181846 154
mbed_official 35:052c1ba06ce7 155 printf("Success\n\n");
mbed_official 71:a0fbcc153b55 156 printf("MAC: %s\n", wifi->get_mac_address());
mbed_official 71:a0fbcc153b55 157 printf("IP: %s\n", wifi->get_ip_address());
mbed_official 71:a0fbcc153b55 158 printf("Netmask: %s\n", wifi->get_netmask());
mbed_official 71:a0fbcc153b55 159 printf("Gateway: %s\n", wifi->get_gateway());
mbed_official 71:a0fbcc153b55 160 printf("RSSI: %d\n\n", wifi->get_rssi());
mbed_official 0:857719181846 161
mbed_official 71:a0fbcc153b55 162 http_demo(wifi);
mbed_official 71:a0fbcc153b55 163
mbed_official 71:a0fbcc153b55 164 wifi->disconnect();
mbed_official 0:857719181846 165
mbed_official 35:052c1ba06ce7 166 printf("\nDone\n");
mbed_official 0:857719181846 167 }