How to Create a Surface and Gesture Project in MPLAB® Code Configurator (MCC) Harmony

Connect the PIC32CM PL10 CNANO Evaluation Kit to the Curiosity Nano touch adapter. 

Connect the QT8 Xplained Pro Extension Kit to the EXT1 header of the Curiosity nano touch adapter as shown in the accompanying image.

Sensor Technology and Sensor Type: Choose Self-Cap as the sensing technology and click the surface icon.

Next, add 5 horizontal and 5 vertical segments, and select 1 & 2 Finger Gesture from the drop-down menu as shown.

Now, an information dialog box opens for sensor pin selection. Click Ok. 

Now in the Configure tab, the surface sensor opens in Surface view. Click the pins assigned to a particular segment and select the appropriate pin according to the pin assignment given from PIC32CMPL10 CNANO with QT8 XPRO in the Table Representation of Curiosity Nano Boards Pin Outs > CNano Touch Adapter > Touch Extension Boards.

Once the pins are selected, from Configure > Sensor Parameters, configure the sensor parameters like Additional Charge Share Delay and Sensor Detect Threshold as shown.

Configure the ADC Prescaler as required, and the ADC Pump enabler based on the device operating voltage, as shown.

To obtain maximum compatibility and extraordinary performance with PIC32CM PL10, use the gesture parameters as shown in the accompanying image.

Select the PTC pin corresponding to the Driven Shield present in QT8 from the drop-down as shown. 

Frequency Hop and Frequency Hop Autotuning will be enabled by default, as shown in the accompanying image.

For monitoring touch data in the MPLAB Data Visualizer, navigate to the Tune tab and enable Touch Tuning (bi-directional, requires UART Tx and Rx). 

Verify the Summary before closing the Touch Configurator. 

The Touch Library, along with RTC, ADC0, and PTC will be loaded in the Project Graph as shown.

Add SERCOM1 for data monitoring in the MPLAB Data Visualizer.

For enabling the LEDs connected to the QT8 board to report touch/gesture detection, SERCOM0 is added to enable I2C-based LED control using the MCP23017 driver. The settings can be configured as shown in the accompanying image.

For this project, the CPU is configured to use a 24 MHz clock. You can change the clock configuration based on the requirements by selecting the Clock Configurations option from the Plugins drop-down.

Once the clock configurator is opened, the clock settings can be changed as shown in the accompanying image.  

Select Pin Configuration from the Plugins dropdown.

Three tabs related to pin configurations are opened. Now, view the Pin Settings tab and check whether all the required touch pins have been added. Also, check whether the SERCOM pins have been configured as required.

After all components have been added to the Project Graph, resolve any warnings or errors listed in the Notifications tab, and then click the Generate button.

Now, add touch_process(), led_decode_gesture() and led_process() to main.c inside the while(1) loop as shown. Build and Flash the project to the PL10 Cnano connected to the PC. 

QT8 functioning with PIC32CMPL10: