User guide

5.6 Reset handlers

The operations carried out by the Reset handler depend on the system for which the software is being developed.

For example, it may:

• Set up exception vectors. See Installing an exception handler for details.

• Initialize stacks and registers.

• Initialize the memory system, if using an MMU.

• Initialize any critical I/O devices.

• Enable interrupts.

• Change processor mode and/or state.

• Initialize variables required by C and call the main application.

See Chapter 6 Writing Code for ROM for more information.

Handling Processor Exceptions