Description: The drivenshield_configure function initializes all driven shield-related APIs required by the touch library. It configures additional peripherals like Direct Memory Access (DMA), Event System (EVSYS), Timer/Counter (TC)/Timer/Counter for Control Applications (TCC) as required.

Description: This function is called by the touch library before starting the dummy measurement. Here, EVSYS is configured to map a Peripheral Touch Controller (PTC) End Of Conversion (EOC) event to start DMA transfer and a DMA transfer complete event to start PTC measurement. Timer’s count, period and compare channel registers are configured based on the current channel’s Charge Share Delay (CSD), prescaler and acquisition frequency. The EVENT generated from the dummy measurement will start a DMA conversion (to configure proper oversampling to PTC) and when the DMA transfer is completed, PTC measurement is started using EVSYS. For some devices, Filter Level registers are 32-bit.

Description: This reconfigures the pin to the timer or PTC (depends on the mux value).

Description: This disables driven shield by disabling the timer peripheral.