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Diffstat (limited to 'docs/library/machine.rst')
| -rw-r--r-- | docs/library/machine.rst | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/docs/library/machine.rst b/docs/library/machine.rst index f831049f8..0a1c1c953 100644 --- a/docs/library/machine.rst +++ b/docs/library/machine.rst @@ -64,9 +64,11 @@ Interrupt related functions Power related functions ----------------------- -.. function:: freq() +.. function:: freq([hz]) - Returns CPU frequency in hertz. + Returns the CPU frequency in hertz. + + On some ports this can also be used to set the CPU frequency by passing in *hz*. .. function:: idle() |