OS20 User Manual 16.2 OS20 function descriptions
cache_lock
Lock the cache configuration
Synopsis int cache_lock( void );
Arguments
None
Results
Returns 0 on success, -1 if an error occurs.
Errors
Returns -1 if the cache registers have already been locked.
Description
This function locks the cache configuration by writing to the CACHECONTROLLOCK register bit. The cache configuration can only be unlocked by a hardware reset. After the configuration has been locked only invalidating and flushing operations can be performed.
Callable from
A task, interrupt service routine or a high priority process (on an ST20-C2).
See also
cache_flush_data ,
cache_invalidate_data ,
cache_invalidate_instruction
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