System and method for interfacing applications processor to touchscreen display for reduced data transfer

A controller for interfacing an applications processor with a position-indicating device, comprising:

• an interface;
• a memory;
• and
• a control module adapted to:
• measure the position-indicating device to generate data;
• analyze the data to determine whether it relates to a notable event;
• store event data related to the notable event in the memory;
• and
• send a signal to the applications processor via the interface when event data is available for access by the applications processor.

A method of interfacing a position-indicating device with an applications processor, comprising:

• receiving configuration information from the applications processor;
• automatically measuring the position-indicating device based on the configuration information to generate data;
• storing the data in a memory;
• and
• notifying the applications processor that data in the memory is available for access.

A controller for interfacing an applications processor with a position-indicating device, comprising:

• an interface;
• a memory;
• and
• a control module adapted to:
• receive configuration information from the applications processor via the interface;
• automatically measure the position-indicating device to generate data based on the configuration information;
• store the data in the memory;
• and
• send a signal to the applications processor via the interface when data is available for access by the applications processor.