57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
#include "mbed.h"
|
|
#include "EthernetInterface.h"
|
|
#include "test_env.h"
|
|
|
|
namespace {
|
|
const char *HTTP_SERVER_NAME = "utcnist.colorado.edu";
|
|
const int HTTP_SERVER_PORT = 37;
|
|
const float YEARS_TO_PASS = 114.0;
|
|
}
|
|
|
|
|
|
int main() {
|
|
MBED_HOSTTEST_TIMEOUT(20);
|
|
MBED_HOSTTEST_SELECT(default_auto);
|
|
MBED_HOSTTEST_DESCRIPTION(NIST Internet Time Service);
|
|
MBED_HOSTTEST_START("NET_2");
|
|
|
|
bool result = false;
|
|
EthernetInterface eth;
|
|
eth.init(); //Use DHCP
|
|
eth.connect();
|
|
printf("UDP client IP Address is %s\n", eth.getIPAddress());
|
|
|
|
UDPSocket sock;
|
|
sock.init();
|
|
|
|
Endpoint nist;
|
|
nist.set_address(HTTP_SERVER_NAME, HTTP_SERVER_PORT);
|
|
|
|
char out_buffer[] = "plop"; // Does not matter
|
|
sock.sendTo(nist, out_buffer, sizeof(out_buffer));
|
|
|
|
union {
|
|
char in_buffer_tab[4];
|
|
unsigned int in_buffer_uint;
|
|
};
|
|
|
|
const int n = sock.receiveFrom(nist, in_buffer_tab, sizeof(in_buffer_tab));
|
|
if (n > 0) {
|
|
result = true;
|
|
const unsigned int timeRes = ntohl(in_buffer_uint);
|
|
const float years = timeRes / 60.0 / 60.0 / 24.0 / 365.0;
|
|
const float days = timeRes / 24.0 / 60.0 / 60.0;
|
|
printf("UDP: Received %d bytes from server %s on port %d\r\n", n, nist.get_address(), nist.get_port());
|
|
printf("UDP: %u seconds since 01/01/1900 00:00 GMT ... %s\r\n", timeRes, timeRes > 0 ? "[OK]" : "[FAIL]");
|
|
printf("UDP: %.2f days since 01/01/1900 00:00 GMT ... %s\r\n", days, timeRes > 0 ? "[OK]" : "[FAIL]");
|
|
printf("UDP: %.2f years since 01/01/1900 00:00 GMT ... %s\r\n", years, timeRes > YEARS_TO_PASS ? "[OK]" : "[FAIL]");
|
|
|
|
if (years < YEARS_TO_PASS) {
|
|
result = false;
|
|
}
|
|
}
|
|
sock.close();
|
|
eth.disconnect();
|
|
MBED_HOSTTEST_RESULT(result);
|
|
}
|