mikroe_captouch2_cap1166

CAP1166 - Cap Touch 2 Click (Mikroe)

Summary

This project shows the driver implementation of an SPI capacitive touch sensor using the CAP1166 sensor with Silicon Labs Platform.

Cap Touch 2 click is a capacitive touch sensing Click board™ which features the CAP1166 chip, which is an advanced touch/proximity sensor IC. It packs a range of different touch/proximity functionalities allowing the development of robust and aesthetically pleasing touch interfaces. It can be used for desktop computer or notebook control, LCD/TFT monitors, various types of consumer electronics, home appliances, and other applications that can benefit of having a reliable and feature-rich touch activated user interface.

Required Hardware

• BGM220-EK4314A BGM220 Bluetooth Module Explorer Kit (BRD4314A BGM220 Explorer Kit Board)

• Or SiWx917 Wi-Fi 6 and Bluetooth LE 8 MB Flash SoC Pro Kit (BRD4002 + BRD4338A)

• Cap Touch 2 Click board based on CAP1166 IC

Hardware Connection

• If the BGM220 Explorer Kit is used:

  The Cap Touch 2 Click board supports MikroBus, so it can connect easily to the Explorer Kit via MikroBus header. Assure that the 45-degree corner of the Click board matches the 45-degree white line of the Explorer Kit.

  The hardware connection is shown in the image below:

  

• If the SiWx917 Wi-Fi 6 and Bluetooth LE 8 MB Flash SoC Pro Kit is used:

  Description	BRD4338A GPIO	BRD4002 Breakout Pad	Cap Touch 2 Click Board
  Alert/Interrupt	GPIO_46	P24	ALT
  Device Reset	GPIO_47	P26	RST
  RTE_GSPI_MASTER_CLK_PIN	GPIO_25	P25	SCK
  RTE_GSPI_MASTER_MISO_PIN	GPIO_26	P27	SDO
  RTE_GSPI_MASTER_MOSI_PIN	GPIO_27	P29	SDI
  RTE_GSPI_MASTER_CS0_PIN	GPIO_28	P31	CS

Setup

You can either create a project based on an example project or start with an empty example project.

Create a project based on an example project

1. From the Launcher Home, add your device to My Products, click on it, and click on the EXAMPLE PROJECTS & DEMOS tab. Find the example project filtering by cap1166.

2. Click Create button on the Third Party Hardware Drivers - CAP1166 - Cap Touch 2 Click (Mikroe) example. Example project creation dialog pops up -> click Create and Finish and Project should be generated.

   

3. Build and flash this example to the board.

Start with an empty example project

1. Create an "Empty C Project" for your board using Simplicity Studio v5. Use the default project settings.

2. Copy the file app/example/mikroe_captouch2_cap1166/app.c into the project root folder (overwriting existing file).

3. Install the software components:

   • Open the .slcp file in the project.

   • Select the SOFTWARE COMPONENTS tab.

   • Install the following components:

     If the BGM220 Explorer Kit is used:

     • [Services] → [Timers] → [Sleep Timer]
     • [Services] → [IO Stream] → [IO Stream: EUSART] → default instance name: vcom
     • [Application] → [Utility] → [Assert]
     • [Application] → [Utility] → [log]
     • [Platform] → [Driver] → [SPI] → [SPIDRV] → default instance name: mikroe
     • [Third Party Hardware Drivers] → [Human Machine Interface] → [CAP1166 - Capacitive Touch 2 Click (Mikroe)]

     If the SiWx917 Wi-Fi 6 and Bluetooth LE 8 MB Flash SoC Pro Kit is used:

     • [Application] → [Utility] → [Assert]
     • [WiSeConnect 3 SDK] → [Device] → [Si91x] → [MCU] → [Service] → [Sleep Timer for Si91x]
     • [Third Party Hardware Drivers] → [Human Machine Interface] → [CAP1166 - Capacitive Touch 2 Click (Mikroe)]

4. Build and flash this example to the board.

Note:

• Make sure that the Third Party Hardware Drivers extension is installed. If not, follow this documentation.

• SDK Extension must be enabled for the project to install "CAP1166 - Capacitive Touch 2 Click (Mikroe)" component.

How It Works

The example checks touch detection (is interrupt occured) and shows a message on the logging screen on which input touch is detected or on which input touch is released. Also turns on LED on which linked input interrupt occured.

You can launch Console that's integrated into Simplicity Studio or use a third-party terminal tool like TeraTerm to receive the data from the USB. A screenshot of the console output is shown in the figure below.

Report Bugs & Get Support

To report bugs in the Application Examples projects, please create a new "Issue" in the "Issues" section of third_party_hw_drivers_extension repo. Please reference the board, project, and source files associated with the bug, and reference line numbers. If you are proposing a fix, also include information on the proposed fix. Since these examples are provided as-is, there is no guarantee that these examples will be updated to fix these issues.

Questions and comments related to these examples should be made by creating a new "Issue" in the "Issues" section of third_party_hw_drivers_extension repo.