Electronic device and touch input sensing method of electronic device

An electronic device comprising:

• a first input unit;
• a second input unit;
• an application processor (AP);
• and
• an input and output subsystem,
• wherein the input and output subsystem is configured to:
• operate in a first mode,
• determine whether the first input unit has sensed a touch input earlier than the second input unit,
• send, if the first input unit has sensed a touch input earlier than the second input unit, a command to the second input unit to collect pressure information in a raw data mode,
• control the second input unit to collect pressure information according to the command,
• generate a pressure table using the collected pressure information,
• map the pressure table and coordinate information sensed by the first input unit and transmit the coordinate information and the pressure information to the AP,
• when the first input unit senses a contact with water or senses a touch input through an insulator, receive information about a second mode of the first input unit,
• disable the touch input collected by the first input unit,
• send a command to the second input unit to operate in the second mode,
• collect coordinate information and pressure information via the second input unit when an interrupt occurs, and
• transmit, to the AP, the coordinate information and the pressure information collected via the second input unit,
• wherein graphical user interfaces (GUIs) are displayed on a display corresponding to a position where the second input unit is present in the second mode.