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Fixes to UDP so that it no longer has socket 0 hardcoded - all part of issue #436. UdpClass::begin now finds the first available free socket, or fails if they're all in use. UdpClass::stop added to release the socket once it is no longer needed. The global Udp object has also been removed and the examples updated to provide their own instance. Finally, in testing I noticed that the UdpNtpClient didn't print leading 0s if the minute or second was a single-digit, so have taken the opportunity to provide a simple fix for it.

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This commit is contained in:
amcewen
2010-12-28 15:16:42 +00:00
parent 53f3e8ef92
commit bc0f3c4fe1
4 changed files with 43 additions and 7 deletions
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11
libraries/Ethernet/examples/UdpNtpClient/UdpNtpClient.pde
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@ -37,6 +37,9 @@ const int NTP_PACKET_SIZE= 48; // NTP time stamp is in the first 48 bytes of the
byte packetBuffer[ NTP_PACKET_SIZE]; //buffer to hold incoming and outgoing packets
// A UDP instance to let us send and receive packets over UDP
UdpClass Udp;
void setup()
{
// start Ethernet and UDP
@ -80,8 +83,16 @@ void loop()
Serial.print("The UTC time is "); // UTC is the time at Greenwich Meridian (GMT)
Serial.print((epoch % 86400L) / 3600); // print the hour (86400 equals secs per day)
Serial.print(':');
if ( ((epoch % 3600) / 60) < 10 ) {
// In the first 10 minutes of each hour, we'll want a leading '0'
Serial.print('0');
}
Serial.print((epoch % 3600) / 60); // print the minute (3600 equals secs per minute)
Serial.print(':');
if ( (epoch % 60) < 10 ) {
// In the first 10 seconds of each minute, we'll want a leading '0'
Serial.print('0');
}
Serial.println(epoch %60); // print the second
}
// wait ten seconds before asking for the time again