10 years, 1 month ago.

You can manually set the registers of the KL46Z to change it. If you do that after making your AnalogIn object it will keep those settings and you can still use AnalogIn. Problem is that contrary to the LPC1768 for example, it isn't simply a max clock rate you can set, there is roughly a max, and all kind of settings to trade resolution/power against speed.

There is https://mbed.org/users/Sissors/code/FastAnalogIn/, which currently is only for the LPC1768, but Frank is working on a KLxx port, which should be finished soonish (read: expected coming days). It is more limitted though: the KL46 can only continiously convert a single channel, while the LPC1768 can do all sequentially. So it can do an instantanious read of the last conversion only on one pin. However it also allows for regular reads something like 4 times current speed (could still be faster as you point out, but at least it is a nice start).