http://forums.leaflabs.com/topic.php?id=9463 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:25:12 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=9463#post-20856 Wed, 07 Nov 2012 10:49:19 +0000 maslo 20856@http://forums.leaflabs.com/ <p>Hi all,</p> <p>I am using Olimexino board with STM32 and Maple IDE. I am trying to clock the counter by external TTL pulses (10us long and 3,3V). Unfortunately, I am not able to set the prescaler to 0. Here is how I setuped the timer:</p> <p> TIMER3_BASE-&gt;SMCR = 0x4000; //enable external input (external clock source mode 2<br /> TIMER3_BASE-&gt;CR1 = 0x0001; //enable the counter</p> <p>But when I send the TTL pulses with signal generator every 20ms, every 40ms the counter increase. </p> <p>Please, does anyone has any idea where can be the problem? </p> <p>Thank you in advance,<br /> Maslo </p>