INPUT DEVICE TRANSMITTER PATH ERROR DIAGNOSIS

摘要

A processing system configured for capacitive sensing comprises transmitter circuitry, a first internal diagnostic mechanism, and a determination module. The transmitter circuitry is coupled with a first transmitter path of a plurality of transmitter paths and configured to transmit a first transmitter signal with the first transmitter path, wherein each transmitter path of the plurality of transmitter paths is configured for capacitive sensing. The first internal diagnostic mechanism is coupled to a second transmitter path of the plurality of transmitter paths. The first internal diagnostic mechanism is configured to acquire a first resulting signal while the transmitter circuitry transmits the first transmitter signal with the first transmitter path, wherein the first internal diagnostic mechanism comprises a selectable leakage path coupled to the transmitter circuitry. The determination module is further configured to determine that the first transmitter path is ohmically coupled to the second transmitter path of the plurality of transmitter paths based upon the first resulting signal.

主权项

1. A processing system configured for capacitive sensing, said processing system comprising:
transmitter circuitry coupled with a first transmitter path of a plurality of transmitter paths and configured to transmit a first transmitter signal with said first transmitter path, wherein each transmitter path of said plurality of transmitter paths is configured for capacitive sensing; a first internal diagnostic mechanism coupled to a second transmitter path of said plurality of transmitter paths, said first internal diagnostic mechanism configured to acquire a first resulting signal while said transmitter circuitry transmits said first transmitter signal with said first transmitter path, wherein said first internal diagnostic mechanism comprises a selectable leakage path coupled to said transmitter circuitry; and a determination module is further configured to determine that said first transmitter path is ohmically coupled to said second transmitter path of said plurality of transmitter paths based upon said first resulting signal.