1.12 ICAP Capture Mode

This example application shows how to use the ICAP peripheral to measure the pulse width of the input signal.

Description

In this application, a pulse signal is generated using the OCMP peripheral and is fed to the ICAP input. ICAP peripheral captures the time at every edge and displays the pulse width on the serial terminal.

Downloading and Building the Application

To clone or download this application from Github, go to the main page of this repository and then click Clone button to clone this repository or download as zip file. This content can also be downloaded using content manager by following these instructions.

Path of the application within the repository is apps/icap/icap_capture_mode/firmware.

To build the application, refer to the following table and open the project using its IDE.

Project Name Description
pic32mz_dag_sk.X MPLABX project for PIC32MZ Embedded Graphics with Stacked DRAM (DA) Starter Kit
pic32mz_das_sk.X MPLABX project for PIC32MZ Embedded Graphics with Stacked DRAM (DA) Starter Kit (Crypto)

Setting Up the Hardware

The following table shows the target hardware for the application projects.

Project Name Description
pic32mz_dag_sk.X PIC32MZ Embedded Graphics with Stacked DRAM (DA) Starter Kit
pic32mz_das_sk.X PIC32MZ Embedded Graphics with Stacked DRAM (DA) Starter Kit (Crypto)

Setting Up PIC32MZ Embedded Graphics with Stacked DRAM (DA) Starter Kit

  • Connect the OC3 pin RG8 (Pin 19 of the J15) to the IC1 pin RD0 (pin 24 of the J15)
  • Connect the Debug USB port on the board to the computer using a micro USB cable
  • Connect the USB to UART port on the board to the computer using a micro USB cable

Setting Up PIC32MZ Embedded Graphics with Stacked DRAM (DA) Starter Kit (Crypto)

  • Connect the OC3 pin RG8 (Pin 19 of the J15) to the IC1 pin RD0 (pin 24 of the J15)
  • Connect the Debug USB port on the board to the computer using a micro USB cable
  • Connect the USB to UART port on the board to the computer using a micro USB cable

Running the Application

  1. Open the Terminal application (Ex.: Tera term) on the computer
  2. Connect to the “USB to UART” COM port and configure the serial settings as follows:
    • Baud : 115200
    • Data : 8 Bits
    • Parity : None
    • Stop : 1 Bit
    • Flow Control : None
  3. Build and Program the application project using its IDE
  4. Console displays the captured pulse width as shown below: