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
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
- Committer:
- mapellil
- Date:
- 2017-01-03
- Revision:
- 5:88cece84fb6e
- Parent:
- 4:11f2b556765b
- Child:
- 6:96e92bfda33e
File content as of revision 5:88cece84fb6e:
#include "mbed.h" #include "SpwfInterface.h" #include "NTPClient.h" #include "TCPSocket.h" //www.amazon.it certificate in PEM format char cert []="-----BEGIN CERTIFICATE-----\r\n" "MIIE0zCCA7ugAwIBAgIQGNrRniZ96LtKIVjNzGs7SjANBgkqhkiG9w0BAQUFADCB\r\n" "yjELMAkGA1UEBhMCVVMxFzAVBgNVBAoTDlZlcmlTaWduLCBJbmMuMR8wHQYDVQQL\r\n" "ExZWZXJpU2lnbiBUcnVzdCBOZXR3b3JrMTowOAYDVQQLEzEoYykgMjAwNiBWZXJp\r\n" "U2lnbiwgSW5jLiAtIEZvciBhdXRob3JpemVkIHVzZSBvbmx5MUUwQwYDVQQDEzxW\r\n" "ZXJpU2lnbiBDbGFzcyAzIFB1YmxpYyBQcmltYXJ5IENlcnRpZmljYXRpb24gQXV0\r\n" "aG9yaXR5IC0gRzUwHhcNMDYxMTA4MDAwMDAwWhcNMzYwNzE2MjM1OTU5WjCByjEL\r\n" "MAkGA1UEBhMCVVMxFzAVBgNVBAoTDlZlcmlTaWduLCBJbmMuMR8wHQYDVQQLExZW\r\n" "ZXJpU2lnbiBUcnVzdCBOZXR3b3JrMTowOAYDVQQLEzEoYykgMjAwNiBWZXJpU2ln\r\n" "biwgSW5jLiAtIEZvciBhdXRob3JpemVkIHVzZSBvbmx5MUUwQwYDVQQDEzxWZXJp\r\n" "U2lnbiBDbGFzcyAzIFB1YmxpYyBQcmltYXJ5IENlcnRpZmljYXRpb24gQXV0aG9y\r\n" "aXR5IC0gRzUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCvJAgIKXo1\r\n" "nmAMqudLO07cfLw8RRy7K+D+KQL5VwijZIUVJ/XxrcgxiV0i6CqqpkKzj/i5Vbex\r\n" "t0uz/o9+B1fs70PbZmIVYc9gDaTY3vjgw2IIPVQT60nKWVSFJuUrjxuf6/WhkcIz\r\n" "SdhDY2pSS9KP6HBRTdGJaXvHcPaz3BJ023tdS1bTlr8Vd6Gw9KIl8q8ckmcY5fQG\r\n" "BO+QueQA5N06tRn/Arr0PO7gi+s3i+z016zy9vA9r911kTMZHRxAy3QkGSGT2RT+\r\n" "rCpSx4/VBEnkjWNHiDxpg8v+R70rfk/Fla4OndTRQ8Bnc+MUCH7lP59zuDMKz10/\r\n" "NIeWiu5T6CUVAgMBAAGjgbIwga8wDwYDVR0TAQH/BAUwAwEB/zAOBgNVHQ8BAf8E\r\n" "BAMCAQYwbQYIKwYBBQUHAQwEYTBfoV2gWzBZMFcwVRYJaW1hZ2UvZ2lmMCEwHzAH\r\n" "BgUrDgMCGgQUj+XTGoasjY5rw8+AatRIGCx7GS4wJRYjaHR0cDovL2xvZ28udmVy\r\n" "aXNpZ24uY29tL3ZzbG9nby5naWYwHQYDVR0OBBYEFH/TZafC3ey78DAJ80M5+gKv\r\n" "MzEzMA0GCSqGSIb3DQEBBQUAA4IBAQCTJEowX2LP2BqYLz3q3JktvXf2pXkiOOzE\r\n" "p6B4Eq1iDkVwZMXnl2YtmAl+X6/WzChl8gGqCBpH3vn5fJJaCGkgDdk+bW48DW7Y\r\n" "5gaRQBi5+MHt39tBquCWIMnNZBU4gcmU7qKEKQsTb47bDN0lAtukixlE0kF6BWlK\r\n" "WE9gyn6CagsCqiUXObXbf+eEZSqVir2G3l6BFoMtEMze/aiCKm0oHw0LxOXnGiYZ\r\n" "4fQRbxC1lfznQgUy286dUV4otp6F01vvpX1FQHKOtw5rDgb7MzVIcbidJ4vEZV8N\r\n" "hnacRHr2lVz2XTIIM6RUthg/aFzyQkqFOFSDX9HoLPKsEdao7WNq\r\n" "-----END CERTIFICATE-----\r\n"; SpwfSAInterface spwf(D8, D2, false); // Wifi interface int main() { time_t ctTime; ctTime = time(NULL); printf ("\n\rConnecting to WiFi ...\n\r"); spwf.connect("ssid","passw", NSAPI_SECURITY_WPA2); NTPClient ntp(spwf); printf("Initial System Time is: %s\r\n", ctime(&ctTime)); printf("Trying to update time...\r\n"); if (ntp.setTime("0.pool.ntp.org") == 0) { printf("Set time successfully\r\n"); ctTime = time(NULL); printf("Time is set to (UTC): %s\r\n", ctime(&ctTime)); if (!spwf.set_time(ctTime)) printf ("ERROR set_time\n\r"); if (!spwf.clean_TLS_certificate(ALL)) printf ("ERROR clean_TLS_certificate\n\r"); if (!spwf.set_TLS_certificate(cert, sizeof(cert), FLASH_CA_ROOT_CERT)) printf ("ERROR set_TLS_certificate\n\r"); if (!spwf.set_TLS_SRV_domain("www.amazon.it",FLASH_DOMAIN)) printf ("ERROR set_TLS_CA_domain\n\r"); // NOTE: DNS requires UDP socket. DNS is invoked while connecting a secure socket to resolve URL to IP, // so DNS doesnt answer as it requires unsecure UDP socket connection. // workaroud: convert URL to IP quering DNS before secure socket creation, then connect // the secure socket created to the retrieved IP. SocketAddress addr(&spwf, "www.amazon.it"); const char *ip=addr.get_ip_address(); printf ("www.amazon.it resolved to: %s\n\r", ip); spwf.set_secure_sockets(); TCPSocket socket(&spwf); int err = socket.connect(ip,443); if (err != 0 )printf ("ERROR opening %d\n\r", err); else printf ("--->>> Secure socket CONNECTED to: %s\n\r", ip); spwf.set_unsecure_sockets(); socket.close(); printf ("Socket closed\n\r"); } else { printf("Error: NTP could not contact server\r\n"); } spwf.disconnect(); printf ("WIFI disconnected, exiting ...\n\r"); }