coffeeBean 0 Posted August 20, 2012 Share Posted August 20, 2012 This just came up on the e2e forums.. there are unfortunately no PWM modules on the Stellaris Launchpad. ANyway we can get around this? Hardware PWMs are a really great feature. Quote Link to post Share on other sites
bluehash 1,581 Posted August 20, 2012 Share Posted August 20, 2012 If you wish to control dc brushed motors, something like the DRV8832 will work. It has a serial interface. Quote Link to post Share on other sites
wrecker 0 Posted August 20, 2012 Share Posted August 20, 2012 I think you meant DRV8830. The DRV8832 has a PWM control interface. Quote Link to post Share on other sites
dellwoodbu 1 Posted August 23, 2012 Share Posted August 23, 2012 Check the LM4F120H5QR Datasheet. The "general purpose" timers have a output mode that can generate simple variable duty cycle square waves (aka PWM). This chip just doesn't have what Stellaris calls motion control PWM which is dead bands, faults and QEI in hardware. It has a TON of timers. 6 x 32 bit times and 6 x 64 bit timers. Each of those 12 can run in a half wide mode. Pretty sure some creative folks will find a way to make that drive some motors. bluehash and Xtagon 2 Quote Link to post Share on other sites
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