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# 1.35 TC Compare Mode

This example application shows how to use the TC module in Compare mode to generate an active low, active high, and toggle output on compare match.

## Description

Three TC channels are configured in Compare mode. Each channel generates different output waveform depending upon configured action on compare match and period match.

Active high output: Output is set low on compare A match and is set high on compare C match.

## 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 be downloaded using content manager by following these instructions.

Path of the application within the repository is apps/tc/tc_compare_mode/firmware.

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

Project Name | Description
--- | ---
sam_9x75_curiosity.X | MPLABX project for SAM9X75 Curiosity Development Board
sam_9x75_curiosity_pro.X | MPLABX project for SAM9X75 Curiosity Pro Development Board

## Setting Up AT91Bootstrap Loader

To load the application binary onto the target device, the user needs to use at91bootstrap loader. Refer to the at91bootstrap loader documentation for details on how to configure, build and run bootstrap loader project and use it to bootstrap the application binaries.

## Setting Up the Hardware

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

Project Name | Description
--- | ---
sam_9x75_curiosity.X | SAM9X75 Curiosity Development Board
sam_9x75_curiosity_pro.X | SAM9X75 Curiosity Pro Development Board

### Setting Up SAM9X75 Curiosity Development Board

- Connect the UART DEBUG J35 on board to the computer using a UART-FTDI cable (to enable debug com port)
- Connect the USB port J2 on board to the computer using a micro USB cable (to power the board)
- Connect the oscilloscope to M.2 P38 pin (PA16) on J21 header

### Setting Up SAM9X75 Curiosity Pro Development Board

- Connect the UART DEBUG J63 on board to the computer using a UART-FTDI cable (to enable debug com port)
- Connect the port J1 on board to the computer using a Type-C USB cable (to power the board)
- Connect the oscilloscope to RST pin (PA17) of mikroBUS-2 connector

## Running the Application

1. Build the application using its IDE.
2. Observe an active high output with 100 Hz frequency and 75% duty cycle.

Rev: E