From 12d8b2cb9e8d525f41bdd6270c343cf280f709aa Mon Sep 17 00:00:00 2001 From: Michael Oborne Date: Sun, 30 Oct 2011 21:28:39 +0800 Subject: [PATCH] prevent div by 0 --- libraries/RC_Channel/RC_Channel.cpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libraries/RC_Channel/RC_Channel.cpp b/libraries/RC_Channel/RC_Channel.cpp index d290dd01cd..96da440698 100644 --- a/libraries/RC_Channel/RC_Channel.cpp +++ b/libraries/RC_Channel/RC_Channel.cpp @@ -190,6 +190,10 @@ RC_Channel::pwm_to_angle() { int radio_trim_high = radio_trim + _dead_zone; int radio_trim_low = radio_trim - _dead_zone; + + // prevent div by 0 + if ((radio_trim_low - radio_min) == 0 || (radio_max - radio_trim_high) == 0) + return 0; if(radio_in > radio_trim_high){ return _reverse * ((long)_high * (long)(radio_in - radio_trim_high)) / (long)(radio_max - radio_trim_high);