Teensy 3.1 clock speeds?

[dgarcia42]

The teensy 3.1 page lists the core clock speed as 72Mhz, overclockable to 96Mhz, but the dropdown selections available to me in teensyduino are 24Mhz, 48Mhz, and 96Mhz (overclock), and F_CPU is set to 24000000, 48000000, and 96000000 respectively. Do any of these map to 72Mhz? (Asking because I have some timing sensitive stuff (hello there, WS2812!) that seems to be unhappy at 24 and 48Mhz in a way that the teensy 3 version of the same code isn't. (I'm doing my timings off of counting ARM_DWT_CYCCNT and using F_CPU to translate from ns timings to clock cycles). I just want to exclude something running at 72Mhz but me computing clocks off of an F_CPU value of 48Mhz

 

[JBeale]

Is this the FastLED2.1 library ? Just curious, I have not tried driving any LED strings myself. My understanding was that Teensy 3.1 runs at the same clock rates as Teensy 3.0, because Paul hasn't got around to configuring the 72 MHz setting, see also:
http://forum.pjrc.com/threads/25407...nd-Reprogramming?p=44401&viewfull=1#post44401

 

[dgarcia42]

It is, life is pretty happy at 96mhz, I just wanted to sanity check before I go chasing down timing demons in the 24 and 48 MHz clocked worlds

 

[dgarcia42]

(And chased down and fixed, thanks again for the response/link!)