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Dependents: NTPClient_HelloWorld_WIZ550io LPC11U68_NTPClient_HelloWorld_WIZ550io SNIC-ntpclient-example NTPClient_HelloWorld ... more
Fork of
NTPClient
by 
Donatien Garnier
Revision 6:15c04f752381, committed 2015-02-01
- Comitter:
- ban4jp
- Date:
- Sun Feb 01 13:43:49 2015 +0000
- Parent:
- 5:c70ed0bfab2e
- Commit message:
- Fixed overflow. due to the negative offset value.
Changed in this revision
| NTPClient.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/NTPClient.cpp Sun Dec 22 13:59:33 2013 +0000
+++ b/NTPClient.cpp Sun Feb 01 13:43:49 2015 +0000
@@ -146,11 +146,11 @@
//Compute offset, see RFC 4330 p.13
uint32_t destTm_s = (NTP_TIMESTAMP_DELTA + time(NULL));
- int64_t offset = ( (int64_t)( pkt.rxTm_s - pkt.origTm_s ) + (int64_t) ( pkt.txTm_s - destTm_s ) ) / 2; //Avoid overflow
+ int64_t offset = ( ( (int64_t)pkt.rxTm_s - (int64_t)pkt.origTm_s ) + ( (int64_t)pkt.txTm_s - (int64_t)destTm_s ) ) / 2; //Avoid overflow
DBG("Sent @%ul", pkt.txTm_s);
DBG("Offset: %lld", offset);
//Set time accordingly
- set_time( time(NULL) + offset );
+ if(offset != 0) set_time( time(NULL) + offset );
#ifdef __DEBUG__
ctTime = time(NULL);