ST / Mbed 2 deprecated NTPClient_HelloWorld

NTP client app setting system time and X-NUCLEO-IDW01M1 Wi-Fi board time connecting to internet NTP UTC time server.

Dependencies:   NTPClient NetworkSocketAPI X_NUCLEO_IDW01M1v2 mbed

Fork of NTPClient_HelloWorld by ST Expansion SW Team

Example of retrieval of current time using an NTP server. Time is then used to perform a TLS secure connection to https://mbed.org.
The application is meant to be used with mbed OS 2 ("Classic") only (no mbedOS 5 support).

main.cpp@4:11f2b556765b, 2017-01-02 (annotated)

Committer:
mapellil
Date:
Mon Jan 02 15:46:54 2017 +0000
Revision:
4:11f2b556765b
Parent:
3:ca8860f482e0
Child:
5:88cece84fb6e
Added secure socket connection example exploiting NTP client. Updated libraries.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
donatien 0:0e0debc29569 1 #include "mbed.h"
mapellil 3:ca8860f482e0 2 #include "SpwfInterface.h"
donatien 2:bf7dc5f5bca9 3 #include "NTPClient.h"
mapellil 4:11f2b556765b 4 #include "TCPSocket.h"
mapellil 4:11f2b556765b 5
mapellil 4:11f2b556765b 6 //www.amazon.it certificate in PEM format
mapellil 4:11f2b556765b 7 char cert []="-----BEGIN CERTIFICATE-----\r\n"
mapellil 4:11f2b556765b 8 "MIIE0zCCA7ugAwIBAgIQGNrRniZ96LtKIVjNzGs7SjANBgkqhkiG9w0BAQUFADCB\r\n"
mapellil 4:11f2b556765b 9 "yjELMAkGA1UEBhMCVVMxFzAVBgNVBAoTDlZlcmlTaWduLCBJbmMuMR8wHQYDVQQL\r\n"
mapellil 4:11f2b556765b 10 "ExZWZXJpU2lnbiBUcnVzdCBOZXR3b3JrMTowOAYDVQQLEzEoYykgMjAwNiBWZXJp\r\n"
mapellil 4:11f2b556765b 11 "U2lnbiwgSW5jLiAtIEZvciBhdXRob3JpemVkIHVzZSBvbmx5MUUwQwYDVQQDEzxW\r\n"
mapellil 4:11f2b556765b 12 "ZXJpU2lnbiBDbGFzcyAzIFB1YmxpYyBQcmltYXJ5IENlcnRpZmljYXRpb24gQXV0\r\n"
mapellil 4:11f2b556765b 13 "aG9yaXR5IC0gRzUwHhcNMDYxMTA4MDAwMDAwWhcNMzYwNzE2MjM1OTU5WjCByjEL\r\n"
mapellil 4:11f2b556765b 14 "MAkGA1UEBhMCVVMxFzAVBgNVBAoTDlZlcmlTaWduLCBJbmMuMR8wHQYDVQQLExZW\r\n"
mapellil 4:11f2b556765b 15 "ZXJpU2lnbiBUcnVzdCBOZXR3b3JrMTowOAYDVQQLEzEoYykgMjAwNiBWZXJpU2ln\r\n"
mapellil 4:11f2b556765b 16 "biwgSW5jLiAtIEZvciBhdXRob3JpemVkIHVzZSBvbmx5MUUwQwYDVQQDEzxWZXJp\r\n"
mapellil 4:11f2b556765b 17 "U2lnbiBDbGFzcyAzIFB1YmxpYyBQcmltYXJ5IENlcnRpZmljYXRpb24gQXV0aG9y\r\n"
mapellil 4:11f2b556765b 18 "aXR5IC0gRzUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCvJAgIKXo1\r\n"
mapellil 4:11f2b556765b 19 "nmAMqudLO07cfLw8RRy7K+D+KQL5VwijZIUVJ/XxrcgxiV0i6CqqpkKzj/i5Vbex\r\n"
mapellil 4:11f2b556765b 20 "t0uz/o9+B1fs70PbZmIVYc9gDaTY3vjgw2IIPVQT60nKWVSFJuUrjxuf6/WhkcIz\r\n"
mapellil 4:11f2b556765b 21 "SdhDY2pSS9KP6HBRTdGJaXvHcPaz3BJ023tdS1bTlr8Vd6Gw9KIl8q8ckmcY5fQG\r\n"
mapellil 4:11f2b556765b 22 "BO+QueQA5N06tRn/Arr0PO7gi+s3i+z016zy9vA9r911kTMZHRxAy3QkGSGT2RT+\r\n"
mapellil 4:11f2b556765b 23 "rCpSx4/VBEnkjWNHiDxpg8v+R70rfk/Fla4OndTRQ8Bnc+MUCH7lP59zuDMKz10/\r\n"
mapellil 4:11f2b556765b 24 "NIeWiu5T6CUVAgMBAAGjgbIwga8wDwYDVR0TAQH/BAUwAwEB/zAOBgNVHQ8BAf8E\r\n"
mapellil 4:11f2b556765b 25 "BAMCAQYwbQYIKwYBBQUHAQwEYTBfoV2gWzBZMFcwVRYJaW1hZ2UvZ2lmMCEwHzAH\r\n"
mapellil 4:11f2b556765b 26 "BgUrDgMCGgQUj+XTGoasjY5rw8+AatRIGCx7GS4wJRYjaHR0cDovL2xvZ28udmVy\r\n"
mapellil 4:11f2b556765b 27 "aXNpZ24uY29tL3ZzbG9nby5naWYwHQYDVR0OBBYEFH/TZafC3ey78DAJ80M5+gKv\r\n"
mapellil 4:11f2b556765b 28 "MzEzMA0GCSqGSIb3DQEBBQUAA4IBAQCTJEowX2LP2BqYLz3q3JktvXf2pXkiOOzE\r\n"
mapellil 4:11f2b556765b 29 "p6B4Eq1iDkVwZMXnl2YtmAl+X6/WzChl8gGqCBpH3vn5fJJaCGkgDdk+bW48DW7Y\r\n"
mapellil 4:11f2b556765b 30 "5gaRQBi5+MHt39tBquCWIMnNZBU4gcmU7qKEKQsTb47bDN0lAtukixlE0kF6BWlK\r\n"
mapellil 4:11f2b556765b 31 "WE9gyn6CagsCqiUXObXbf+eEZSqVir2G3l6BFoMtEMze/aiCKm0oHw0LxOXnGiYZ\r\n"
mapellil 4:11f2b556765b 32 "4fQRbxC1lfznQgUy286dUV4otp6F01vvpX1FQHKOtw5rDgb7MzVIcbidJ4vEZV8N\r\n"
mapellil 4:11f2b556765b 33 "hnacRHr2lVz2XTIIM6RUthg/aFzyQkqFOFSDX9HoLPKsEdao7WNq\r\n"
mapellil 4:11f2b556765b 34 "-----END CERTIFICATE-----\r\n";
mapellil 4:11f2b556765b 35
mapellil 4:11f2b556765b 36 SpwfSAInterface spwf(D8, D2, false); // Wifi interface
donatien 0:0e0debc29569 37
donatien 0:0e0debc29569 38 int main()
donatien 0:0e0debc29569 39 {
mapellil 3:ca8860f482e0 40 time_t ctTime;
mapellil 3:ca8860f482e0 41 ctTime = time(NULL);
mapellil 3:ca8860f482e0 42
mapellil 3:ca8860f482e0 43 printf ("\n\rConnecting to WiFi ...\n\r");
mapellil 4:11f2b556765b 44 spwf.connect("crespan","Elfrontal1", NSAPI_SECURITY_WPA2);
mapellil 3:ca8860f482e0 45 NTPClient ntp(spwf);
donatien 0:0e0debc29569 46
mapellil 3:ca8860f482e0 47 printf("Initial System Time is: %s\r\n", ctime(&ctTime));
donatien 2:bf7dc5f5bca9 48 printf("Trying to update time...\r\n");
donatien 2:bf7dc5f5bca9 49 if (ntp.setTime("0.pool.ntp.org") == 0)
donatien 0:0e0debc29569 50 {
donatien 2:bf7dc5f5bca9 51 printf("Set time successfully\r\n");
donatien 2:bf7dc5f5bca9 52 ctTime = time(NULL);
donatien 2:bf7dc5f5bca9 53 printf("Time is set to (UTC): %s\r\n", ctime(&ctTime));
mapellil 4:11f2b556765b 54 if (!spwf.set_time(ctTime)) printf ("ERROR set_time\n\r");
mapellil 4:11f2b556765b 55 if (!spwf.clean_TLS_certificate(ALL)) printf ("ERROR clean_TLS_certificate\n\r");
mapellil 4:11f2b556765b 56 if (!spwf.set_TLS_certificate(cert, sizeof(cert), FLASH_CA_ROOT_CERT)) printf ("ERROR set_TLS_certificate\n\r");
mapellil 4:11f2b556765b 57 if (!spwf.set_TLS_SRV_domain("www.amazon.it",FLASH_DOMAIN)) printf ("ERROR set_TLS_CA_domain\n\r");
mapellil 4:11f2b556765b 58 // NOTE: DNS requires UDP socket. DNS is invoked while connecting a secure socket to resolve URL to IP,
mapellil 4:11f2b556765b 59 // so DNS doesnt answer as it requires unsecure UDP socket connection.
mapellil 4:11f2b556765b 60 // workaroud: convert URL to IP quering DNS before secure socket creation, then connect
mapellil 4:11f2b556765b 61 // the secure socket created to the retrieved IP.
mapellil 4:11f2b556765b 62 SocketAddress addr(&spwf, "www.amazon.it");
mapellil 4:11f2b556765b 63 const char *ip=addr.get_ip_address();
mapellil 4:11f2b556765b 64 printf ("www.amazon.it resolved to: %s\n\r", ip);
mapellil 4:11f2b556765b 65 spwf.set_secure_sockets();
mapellil 4:11f2b556765b 66 TCPSocket socket(&spwf);
mapellil 4:11f2b556765b 67 int err = socket.connect(ip,443);
mapellil 4:11f2b556765b 68 if (err != 0 )printf ("ERROR opening %d\n\r", err);
mapellil 4:11f2b556765b 69 else printf ("--->>> Secure socket CONNECTED to: %s\n\r", ip);
mapellil 4:11f2b556765b 70 spwf.set_unsecure_sockets();
mapellil 4:11f2b556765b 71 socket.close();
mapellil 4:11f2b556765b 72 printf ("Socket closed\n\r");
mapellil 4:11f2b556765b 73 }
donatien 0:0e0debc29569 74 else
donatien 0:0e0debc29569 75 {
mapellil 4:11f2b556765b 76 printf("Error: NTP could not contact server\r\n");
mapellil 3:ca8860f482e0 77 }
mapellil 3:ca8860f482e0 78 spwf.disconnect();
mapellil 4:11f2b556765b 79 printf ("WIFI disconnected, exiting ...\n\r");
donatien 0:0e0debc29569 80 }