From 41c3d98e8951107970a35f6104e1cbf15cd87ada Mon Sep 17 00:00:00 2001 From: Jonathan McCrohan Date: Wed, 4 Apr 2012 00:11:39 +0100 Subject: modbuslog: flush serial IO buffers on modbus error --- src/modbuslog.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/src/modbuslog.c b/src/modbuslog.c index cb509ea..3f9b658 100644 --- a/src/modbuslog.c +++ b/src/modbuslog.c @@ -44,6 +44,9 @@ #include +#include +#include + // handle SIGALRM by resetting it void minute_check(int signum) { alarm(60); @@ -271,6 +274,21 @@ int main(int argc, char *argv[]) { // back off for 2 secs, increasing by 2 for each // incorrect reply sleep(2+retry*2); + + // open serial port file descriptor, + // flush IO, write zero-ouput, reflush IO, + // close file descriptor + int fd = open(modbus_device_address, O_RDWR | O_NOCTTY ); + if (tcflush(fd, TCIOFLUSH) == 0){ + syslog(LOG_WARNING, "Flushing [%s] serial IO buffer", modbus_device_address); + } + if (tcsendbreak(fd, 0) == 0){ + syslog(LOG_WARNING, "Writing zero-value bits to [%s]", modbus_device_address); + } + if (tcflush(fd, TCIOFLUSH) == 0){ + syslog(LOG_WARNING, "Reflushing [%s] serial IO buffer", modbus_device_address); + } + close(fd); } retry++; } while ((rc == -1) && (retry <= modbus_retry)); -- cgit v1.2.3 hoDAgua?h=debian/0%2bgit20151202.3864e0a-1&follow=1'>logtreecommitdiffstats
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2016-01-18Imported Upstream version 0+git20151202.3864e0aJonathan McCrohan840-4057/+18230
2016-01-18Update get-vcs-snapshot.sh to reflect gbp changesJonathan McCrohan2-1/+2
2016-01-18Imported Upstream version 0+git20151202.3864e0aupstream/0+git20151202.3864e0aJonathan McCrohan840-4057/+18230
2015-05-05d/control: various fixes found by libconfig-model-dpkg-perlJonathan McCrohan2-5/+13
2015-04-01Release 0+git20150208.f2053b3-1Jonathan McCrohan1-2/+2
2015-04-01Describe changes made in snapshotJonathan McCrohan1-0/+3
2015-04-01New Upstream Snapshot (commit f2053b3)Jonathan McCrohan1-0/+6
2015-04-01Imported Upstream version 0+git20150208.f2053b3upstream/0+git20150208.f2053b3Jonathan McCrohan32-333/+483
2014-12-28Release 0+git20141218.b46a22c-1debian/0+git20141218.b46a22c-1Jonathan McCrohan1-2/+2
2014-12-28Updated AU DVB-T files; Thanks Brian Burch! (Closes LP: #1393280)Jonathan McCrohan1-0/+1
2014-12-28New Upstream Snapshot (commit b46a22c)Jonathan McCrohan1-0/+6
2014-12-28Imported Upstream version 0+git20141218.b46a22cupstream/0+git20141218.b46a22cJonathan McCrohan535-639/+317
2014-10-20Release 0+git20141009.d26b627-1debian/0+git20141009.d26b627-1Jonathan McCrohan1-2/+2
2014-10-20Fix up packaging to account for move to DVBv5Jonathan McCrohan2-2/+6
2014-10-20delete d/dtv-scan-files.install; Upstream now supplies a MakefileJonathan McCrohan2-4/+1
2014-10-15d/control: update Standards Version to 3.9.6Jonathan McCrohan2-1/+3
2014-10-15d/control: add Build-Depends on dvb-toolsJonathan McCrohan2-1/+2
2014-10-15New Upstream Snapshot (commit d26b627)Jonathan McCrohan1-0/+10
2014-10-15Imported Upstream version 0+git20141009.d26b627upstream/0+git20141009.d26b627Jonathan McCrohan2010-11120/+159271
2014-07-23Release 0+git20140611.14bd6c7-1debian/0+git20140611.14bd6c7-1Jonathan McCrohan1-2/+2
2014-07-23New Upstream Snapshot (commit 14bd6c7)Jonathan McCrohan1-2/+3
2014-07-23Imported Upstream version 0+git20140611.14bd6c7upstream/0+git20140611.14bd6c7Jonathan McCrohan7-11/+60
2014-05-13New Upstream Snapshot (commit 1246b27)Jonathan McCrohan1-0/+6
2014-05-13Imported Upstream version 0+git20140512.1246b27upstream/0+git20140512.1246b27Jonathan McCrohan391-301/+3983
2014-04-05Release 0+git20140326.cfc2975-1debian/0+git20140326.cfc2975-1Jonathan McCrohan1-2/+2
2014-04-05d/control: update Homepage (upstream has moved from Gitweb to cgit)Jonathan McCrohan2-1/+2
2014-04-05New Upstream Snapshot (commit cfc2975)Jonathan McCrohan1-0/+6
2014-04-05Imported Upstream version 0+git20140326.cfc2975upstream/0+git20140326.cfc2975Jonathan McCrohan118-656/+877
2014-01-16Release 0+git20140107.1850cf8-1debian/0+git20140107.1850cf8-1Jonathan McCrohan1-2/+2
2014-01-16Update Standards Version to 3.9.5Jonathan McCrohan2-1/+9