[time-nuts] precision timing pulse
jimlux at earthlink.net
Wed Nov 16 23:47:52 EST 2016
On 11/16/16 1:03 PM, Hal Murray wrote:
> chris at chriscaudle.org said:
>> but once you get to most of the ARM processors it is harder to make them
>> deterministic because of caches.
> There are many ARM SOC chips that are half way between an Arduino and a
> Raspberry Pi. They have GPIO and various serial ports and counter/timers.
> They don't have USB, Ethernet, or a display controller. They do have on-chip
> RAM and Flash.
The teensy from PJRC is a good example - uses the Arduino dev
environment and has all the easy to use libraries, but is a LOT faster
and has better peripherals. Or you can use other dev environments. It's
an ARM Cortex something or other.
The BeagleBoard Black is a bigger, more capable example.. You can
actually run a *nix on it, but has device drivers and such for lots of
GPIO and timers.
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