Function picorv32::asm::timer

pub unsafe fn timer(cycles_to_wait: u32) -> u32

timer instruction wrapper

Original documentation from [https://github.com/cliffordwolf/picorv32/blob/master/README.md#timer]:

Reset the timer counter to a new value. The counter counts down clock cycles and triggers the timer interrupt when transitioning from 1 to 0. Setting the counter to zero disables the timer. The old value of the counter is written to rd.

0000101 ----- XXXXX --- XXXXX 0001011
f7      rs2   rs    f3  rd    opcode

Example:

timer x1, x2