Revision 1:581335dbdd60, committed 2017-06-09

Comitter:

rob.meades@u-blox.com

Date:

Fri Jun 09 12:42:49 2017 +0100

Parent:

0:b65434b89fd0

Child:

2:dbf7dd3da592

Commit message:

Flesh out example properly.

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Jun 09 12:42:49 2017 +0100
@@ -0,0 +1,232 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017 u-blox
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mbed.h"
+#include "UbloxATCellularInterface.h"
+
+// The credentials of the SIM in the board.  If PIN checking is enabled
+// for your SIM card you must set this to the required PIN.
+#define PIN "0000"
+
+// Network credentials.  You should set this according to your
+// network/SIM card.  For C030 boards, leave the parameters as NULL
+// otherwise, if you do not know the APN for your network, you may
+// either try the fairly common "internet" for the APN (and leave the
+// username and password NULL), or you may leave all three as NULL and then
+// a lookup will be attempted for a small number of known networks
+// (see APN_db.h in mbed-os/features/netsocket/cellular/utils).
+#define APN         NULL
+#define USERNAME    NULL
+#define PASSWORD    NULL
+
+// LEDs
+DigitalOut ledRed(LED1, 1);
+DigitalOut ledGreen(LED2, 1);
+DigitalOut ledBlue(LED3, 1);
+
+// The user button
+volatile bool buttonPressed = false;
+
+static void good() {
+    ledGreen = 0;
+    ledBlue = 1;
+    ledRed = 1;
+}
+
+static void bad() {
+    ledRed = 0;
+    ledGreen = 1;
+    ledBlue = 1;
+}
+
+static void event() {
+    ledBlue = 0;
+    ledRed = 1;
+    ledGreen = 1;
+}
+
+static void pulseEvent() {
+    event();
+    wait_ms(500);
+    good();
+}
+
+static void ledOff() {
+    ledBlue = 1;
+    ledRed = 1;
+    ledGreen = 1;
+}
+
+static void printNtpTime(char * buf, int len)
+{
+    time_t timestamp = 0;
+    struct tm *localTime;
+    char timeString[25];
+    time_t TIME1970 = 2208988800U;
+
+    if (len >= 43) {
+        timestamp |= ((int) *(buf + 40)) << 24;
+        timestamp |= ((int) *(buf + 41)) << 16;
+        timestamp |= ((int) *(buf + 42)) << 8;
+        timestamp |= ((int) *(buf + 43));
+        timestamp -= TIME1970;
+        localTime = localtime(&timestamp);
+        if (localTime) {
+            if (strftime(timeString, sizeof(timeString), "%a %b %d %H:%M:%S %Y", localTime) > 0) {
+                printf("NTP timestamp is %s.\n", timeString);
+            }
+        }
+    }
+}
+
+static void cbButton()
+{
+    buttonPressed = true;
+    pulseEvent();
+}
+
+/* This example program for the u-blox C030 and C027 boards instantiates
+ * the UbloxAtCellularInterface and uses it to make a simple sockets
+ * connection to a server, using 2.pool.ntp.org for UDP and developer.mbed.org
+ * for TCP.  For a more comprehensive example, where higher layer protocols
+ * make use of the same sockets interface, see example-ublox-mbed-client.
+ * Progress may be monitored with a serial terminal running at 9600 baud.
+ * The LED on the C030 board will turn green when this program is
+ * operating correctly, pulse blue when a sockets operation is completed
+ * and turn red if there is a failure.
+ */
+
+int main()
+{
+    UbloxATCellularInterface *interface = new UbloxATCellularInterface();
+    TCPSocket sockTcp;
+    UDPSocket sockUdp;
+    SocketAddress udpServer;
+    SocketAddress udpSenderAddress;
+    SocketAddress tcpServer;
+    char buf[1024];
+    int x;
+    InterruptIn userButton(SW0);
+    
+    // Attach a function to the user button
+    userButton.rise(&cbButton);
+    
+    good();
+    printf("Starting up, please wait up to 180 seconds for network registration to complete...\n");
+    if (interface->init(PIN)) {
+        pulseEvent();
+        printf("Registered, connecting to the packet network...\n");
+        for (x = 0; interface->connect(PIN, APN, USERNAME, PASSWORD) != 0; x++) {
+            if (x > 0) {
+                bad();
+                printf("Retrying (have you checked that an antenna is plugged in and your APN is correct?)...\n");
+            }
+        }
+        pulseEvent();
+        
+        printf("Getting the IP address of \"developer.mbed.org\" and \"2.pool.ntp.org\"...\n");
+        if ((interface->gethostbyname("2.pool.ntp.org", &udpServer) == 0) &&
+            (interface->gethostbyname("developer.mbed.org", &tcpServer) == 0)) {
+            pulseEvent();
+            udpServer.set_port(123);
+            tcpServer.set_port(80);
+            printf("\"2.pool.ntp.org\" address: %s on port %d.\n", udpServer.get_ip_address(), udpServer.get_port());
+            printf("\"developer.mbed.org\" address: %s on port %d.\n", tcpServer.get_ip_address(), tcpServer.get_port());
+            
+            printf("Performing socket operations in a loop until the user button is pressed...\n");
+            while (!buttonPressed) {
+                // UDP Sockets
+                printf("=== UDP ===\n");
+                printf("Opening a UDP socket...\n");
+                if (sockUdp.open(interface) == 0) {
+                    pulseEvent();
+                    printf("UDP socket open.\n");
+                    sockUdp.set_timeout(10000);
+                    printf("Sending time request to \"2.pool.ntp.org\" over UDP socket...\n");
+                    memset (buf, 0, sizeof(buf));
+                    *buf = '\x1b';
+                    if (sockUdp.sendto(udpServer, (void *) buf, 48) == 48) {
+                        pulseEvent();
+                        printf("Socket send completed, waiting for UDP response...\n");
+                        x = sockUdp.recvfrom(&udpSenderAddress, buf, sizeof (buf));
+                        if (x > 0) {
+                            pulseEvent();
+                            printf("Received %d byte response from server %s on UDP socket:\n"
+                                   "-------------------------------------------------------\n",
+                                   x, udpSenderAddress.get_ip_address());
+                            printNtpTime(buf, x);
+                            printf("-------------------------------------------------------\n");
+                        }
+                    }                
+                    printf("Closing socket...\n");
+                    sockUdp.close();
+                    pulseEvent();
+                    printf("Socket closed.\n");
+                }
+                
+                // TCP Sockets
+                printf("=== TCP ===\n");
+                printf("Opening a TCP socket...\n");
+                if (sockTcp.open(interface) == 0) {
+                    pulseEvent();
+                    printf("TCP socket open.\n");
+                    sockTcp.set_timeout(10000);
+                    printf("Connecting socket to %s on port %d...\n", tcpServer.get_ip_address(), tcpServer.get_port());
+                    if (sockTcp.connect(tcpServer) == 0) {
+                        printf("Connected, sending HTTP GET request to \"developer.mbed.org\" over socket...\n");
+                        strcpy (buf, "GET /media/uploads/mbed_official/hello.txt HTTP/1.0\r\n\r\n");
+                        // Note: since this is a short string we can send it in one go as it will
+                        // fit within the default buffer sizes.  Normally you should call sock.send()
+                        // in a loop until your entire buffer has been sent.
+                        if (sockTcp.send((void *) buf, strlen(buf)) == (int) strlen(buf)) {
+                            pulseEvent();
+                            printf("Socket send completed, waiting for response...\n");
+                            x = sockTcp.recv(buf, sizeof (buf));
+                            if (x > 0) {
+                                pulseEvent();
+                                printf("Received %d byte response from server on TCP socket:\n"
+                                       "----------------------------------------------------\n%.*s"
+                                       "----------------------------------------------------\n",
+                                        x, x, buf);
+                            }
+                        }
+                    }
+                    printf("Closing socket...\n");
+                    sockTcp.close();
+                    pulseEvent();
+                    printf("Socket closed.\n");
+                }
+                wait_ms(5000);
+                printf("[Checking user button]\n");
+            }
+            
+            pulseEvent();
+            printf("User button was pressed, stopping...\n");
+            interface->disconnect();
+            interface->deinit();
+            ledOff();
+            printf("Stopped.\n");
+        } else {
+            bad();
+            printf("Unable to get IP address of \"mbed.org\".\n");
+        }
+    } else {
+        bad();
+        printf("Unable to initialise the interface.\n");
+    }
+}
+
+// End Of File
\ No newline at end of file