Embedded SW: Multiple Switch Detection Interface Software Driver

EMBEDDED-SW-MSDI

This embedded software solution provides high-level support for listed NXP analog parts (CD1020, CD1030, MC33978, MC34978).

Included embedded driver provides access to all features of Multiple Switch Detection Interface devices such as writing/reading registers, reading switch state and fault status, setting AMUX channel, resetting the device and entering low-power mode.

Implementation of the MSDI software driver is generic, allowing to use any suitable 32-bit microcontroller with SPI module and enough number of GPIO pins. Example project for the S32K144 microcontroller is a part of the package.

Features

  • Multiple Switch Detection Interface SW Driver
    • Setting and reading device registers
    • Initializing device with custom register values
    • Reading the state of switches
    • Reading fault status
    • Setting AMUX channel
    • Entering and leaving the low-power mode
    • Resetting the device
    • Obtaining Fault status and INTflg flags from SPI transfers
  • S32 Design Studio for Arm® example project
    • Example project for CD1020 and S32K144 evaluation boards

Supported Devices

  • CD1020: Low-Cost 22-CH Multiple Switch Detect Interface
  • CD1030: 33-Channel Multiple Switch Detection Interface with Programmable Current
  • MC33978: 22 I/O MSDI Programmable Current Analog Mux
  • MC34978: Switch Detection Interface, 22 I/Os, Programmable Wetting Current, Temp Sensor, 3.3 V / 5.0 V SPI

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