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# 1.23 QSPI Flash Read Write in SPI Mode

This example shows how to use the QSPI Peripheral library to perform erase, write and read operation with the QSPI Serial Flash memory in SPI mode.

## Description

This example uses the QSPI peripheral library to erase and write an array of values to the QSPI Serial Flash memory in SPI mode. It verifies the value written by reading the values back and comparing it to the value written. The application can be configured to perform operations on SST26VF064B QSPI Serial Flash Memory.

## 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/qspi/spi_read_write.

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

Project Name | Description
--- | ---
sam_a7d65_curiosity.X | MPLABX project for SAMA7D65 Curiosity Board
sam_a7d65_curiosity_pro.X | MPLABX project for SAMA7D65 Curiosity Pro Board

## Setting Up AT91Bootstrap Loader

To load the application binary onto the target device, we need 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_a7d65_curiosity.X | SAMA7D65 Curiosity Board
sam_a7d65_curiosity_pro.X | SAMA7D65 Curiosity Pro Board

### Setting Up SAMA7D65 Curiosity Board

Setting up the board:

- Connect the USBA port J3 on the board to the computer using a Type-C USB cable (to power the board)
- Connect the UART Debug port (J35) on the board to the computer using a FTDI-USB cable
- Close jumper J39 (QSPI BOOT)

### Setting Up SAMA7D65 Curiosity Pro Board

Setting up the board:

- Connect the USBA port J1 on the board to the computer using a Type-C USB cable (to power the board)
- Connect the UART Debug port (J63) on the board to the computer using a FTDI-USB cable
- Close jumper J78 (QSPI BOOT)

## Running the Application

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

Refer to the following table for LED name:

Board | LED Name
--- | ---
SAMA7D65 Curiosity Board | RGB_LED (Green)
SAMA7D65 Curiosity Pro Board | RGB_LED (Green)

Rev: C