Abstract NOR Flash Class

Generic NOR Flash interface. More...

Collaboration diagram for Abstract NOR Flash Class:

Generic NOR Flash interface.

This module implements a generic class for NOR Flash devices.

Driver State Machine

The flash driver implements a state machine internally, not all the driver functionalities can be used in any moment, any transition not explicitly shown in the following diagram has to be considered an error and shall be captured by an assertion (if enabled).

Flash Operations.

This driver abstracts a generic PWM timer composed of:

• A clock prescaler.
• A main up counter.
• A comparator register that resets the main counter to zero when the limit is reached. An optional callback can be generated when this happens.
• An array of PWM_CHANNELS PWM channels, each channel has an output, a comparator and is able to invoke an optional callback when a comparator match with the main counter happens.

A PWM channel output can be in two different states:

• IDLE, when the channel is disabled or after a match occurred.
• ACTIVE, when the channel is enabled and a match didn't occur yet in the current PWM cycle.

Note that the two states can be associated to both logical zero or one in the PWMChannelConfig structure.