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##

# 2.41.8 EFC_RegionLock Function

## C

    void EFC_RegionLock(uint32_t address);

## Summary

Locks a Flash region.

## Description

This function is used to lock a certain region of on-chip flash. It takes in address as a parameter and locks the region associated with it.

## Precondition

Validate if EFC controller is ready to accept new request by calling EFC_IsBusy()

## Parameters

Param | Description
--- | ---
address | Address of the page to be locked

## Returns

None.

## Example

    EFC_RegionLock(0x00500000);

    while(EFC_IsBusy());