Function system_peripheral_lock

Lock a given peripheral's control registers until hardware reset.

__no_inline enum status_code system_peripheral_lock_always(
		const uint32_t peripheral_id,
		const uint32_t key)

Locks a given peripheral's control registers, to deny write access to the peripheral to prevent accidental changes to the module's configuration. After lock, the only way to unlock is hardware reset.

Warning: Locking an already locked peripheral will cause a CPU exception, and terminate program execution.

Table 1. Parameters
Data direction	Parameter name	Description
[in]	peripheral_id	ID for the peripheral to be locked, sourced via the SYSTEM_PERIPHERAL_ID macro
[in]	key	Bitwise inverse of peripheral ID, used as key to reduce the chance of accidental locking. See Key-Argument

Returns

Status of the peripheral lock procedure.

Table 2. Return Values
Return value	Description
STATUS_OK	If the peripheral was successfully locked
STATUS_ERR_INVALID_ARG	If invalid argument(s) were supplied

Function system_peripheral_lock_always()

Returns