CY3280-MBR CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-64772 Rev. **
23
Kit Features
Figure 3-19. BTN1 Sensor Shorted to Ground
3.9.3
Test FMEA Feature - CapSense Button to Button Short
Follow these steps:
1. Press the power button to turn off the kit.
2. Connect a wire between pin# 4 and pin# 5 of connector J5. This shorts BTN1 and BTN2 sensors.
3. Press the power button to turn on the kit.
FMEA routine is executed by the CapSense controller on power up and the sensor to sensor
short is detected. On power up, observe a pulse of 5 ms width on LED1 and LED2 pins, which
indicates that BTN1 is shorted to BTN2. CapSense controller disables the button sensors that are
shorted to each other. Touch
BTN1
or
BTN2
; note that the respective LEDs are not turned on.
Other buttons work normally.
Figure 3-20. BTN1 Sensor Shorted to Ground
