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# 1.8 HEFC Flash Read Write

This example application demonstrates how to use the HEFC to erase and program the internal Flash memory.

## Description

This example uses the HEFC peripheral library to erase a row and write an array of values to the internal Flash memory. It verifies the value written by reading the values back and comparing it to the value written.

## 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/hefc/flash_read_write/firmware.

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

Project Name | Description
--- | ---
sam_rh71_ek.X | MPLABX project for SAM RH71 Evaluation Kit

## Setting Up the Hardware

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

Project Name | Description
--- | ---
sam_rh71_ek.X | SAM RH71 Evaluation Kit

### Setting Up SAM RH71 Evaluation Kit

- Connect the debugger probe to J33

## Running the Application

1. Build and Program the application using its IDE
2. LED indicates success or failure:
   - The LED is turned ON when the value read from the flash matched with the written value
   - The LED is turned OFF when the value read from the flash did not match with the written value

Following table provides the LED name:

Board | LED Name
--- | ---
SAM RH71 Evaluation Kit | LED0