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# 1.6 SPI Driver Asynchronous - Multi instance

This example demonstrates how to use multi instance of the SPI driver in asynchronous mode to communicate with multiple EEPROMs.

## Description

This example writes and reads data to and from two separate EEPROM connected over two different SPI bus by using multi instance feature of the driver. The example also demonstrates how to setup two different EEPROM transfers at different baud rates.

## 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/driver/spi/async/spi_multi_instance/firmware.

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

Project Name | Description
--- | ---
pic32cm_le00_curiosity_pro.X | MPLABX project for PIC32CM LE00 Curiosity Pro Evaluation Kit

## Setting Up the Hardware

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

Project Name | Description
--- | ---
pic32cm_le00_curiosity_pro.X | PIC32CM LE00 Curiosity Pro Evaluation Kit

### Setting Up PIC32CM LE00 Curiosity Pro Evaluation Kit

- To run the demo, the following additional hardware are required:
  - Two EEPROM 4 Click boards
  - Two mikroBUS Xplained Pro boards
- Install EEPROM 4 Click boards on to the mikroBUS Xplained Pro boards
- Connect mikroBUS Xplained Pro boards on to the “EXT1” and “EXT2” headers
- Connect the Debug USB port on the board to the computer using a micro USB cable

## 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 EEPROM matched with the written value

Refer to the following table for LED name:

Board | LED Name
--- | ---
PIC32CM LE00 Curiosity Pro Evaluation Kit | LED0