How to use spi to write and read some specfic register address

I just tried 3 and it looks like the same output as 0.02 that I have before

is there a way to check the data without using print? and another way to call the function repeatedly if we want to call it fast? for visualizing the data, one other method I can think of is writes file, I believe the write file should be faster than console.log(), but I am concerning if write file write it to the flash memory? if so, i am afraid I do not have enough flash for the data in espruino .

Yes, I will try that inline c, I tried the one with adding "complied" in the code and it did not work, but does increase a bit speed.

OHHHHH no, if gettime return in second, that proof the 833 Hz is impossible with javascript