Skip to main content

## wfi

# Function wfi

Source

    pub unsafe fn wfi()

🔬This is a nightly-only experimental API. (`riscv_ext_intrinsics` #114544)
Available on (RISC-V RV32) and (RISC-V RV32 or RISC-V RV64) only.
Expand description

Generates the `WFI` instruction

The WFI instruction provides a hint to the implementation that the current hart can be stalled until an interrupt might need servicing. This instruction is a hint, and a legal implementation is to simply implement WFI as a NOP.