Overview

CAPSENSE™ Touchpad I2C Host is portable middleware for controlling an Infineon PSOC™ 4000T CAPSENSE™ touchpad from a bare-metal or RTOS-based host MCU. It provides C APIs for touch coordinates, gestures, configuration, diagnostics, sensor data and user data.

The portable core uses application-provided I2C callbacks and does not depend on a specific MCU, RTOS, ModusToolbox™, or Peripheral Driver Library (PDL). A PSOC™ Edge reference port and a platform-neutral port template are included.

Features

Portable middleware core
Callback-based I2C interface
Touch position and gesture APIs
Configuration, diagnostics, and sensor-data APIs
User-data operations
PSOC™ Edge reference port for KIT_PSE84_EVAL_EPC2
Port template for other host platforms

Quick Start

Refer to the CAPSENSE™ Touchpad I2C Host API Reference for a complete Quick Start Guide.

Add the middleware public header and source to the application, implement the I2C read and write callbacks, and initialize a context:

#include "mtb_touchpad_driver.h"
 
static mtb_touchpad_intf_context_t touchpad_context;
 
MTB_TOUCHPAD_RET_TYPE result = mtb_touchpad_init(
    application_touchpad_write,
    application_touchpad_read,
    NULL,
    &touchpad_context);

The touchpad and host I2C controller must be initialized before calling mtb_touchpad_init(). Always check the returned status before using API output values.

For port requirements and transaction diagrams, refer to the porting guide.

Supported Toolchains

Refer to Release Notes for a list of supported toolchains.

Related Projects

More Information

For more information, refer to the following documents:

CAPSENSE™ Touchpad I2C Host API Reference Manual
Porting Guide
Release Notes
ModusToolbox™ Software Environment
Infineon Technologies AG

Changelog

Version	Changes
1.0.0	Initial release.