From 0289c63c4cd8cf558f832f2e26f62d535e5ac06f Mon Sep 17 00:00:00 2001 From: Brendan Le Foll Date: Wed, 26 Nov 2014 14:00:17 +0000 Subject: [PATCH] pwm.c: remove possibility of division by 0 Signed-off-by: Brendan Le Foll --- src/pwm/pwm.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/src/pwm/pwm.c b/src/pwm/pwm.c index 32c29f2..3a51370 100644 --- a/src/pwm/pwm.c +++ b/src/pwm/pwm.c @@ -268,8 +268,11 @@ mraa_pwm_write(mraa_pwm_context dev, float percentage) float mraa_pwm_read(mraa_pwm_context dev) { - float output = mraa_pwm_read_duty(dev) / (float) mraa_pwm_read_period(dev); - return output; + int period = mraa_pwm_read_period(dev); + if (period > 0) { + return (mraa_pwm_read_duty(dev) / (float) period); + } + return 0.0f; } mraa_result_t