1.26 SPI Driver Asynchronous - Multi Client
This example demonstrates how to use single instance of the SPI driver in asynchronous mode to communicate with multiple EEPROMs.
Description
This example write and read data to and from two separate EEPROM connected over the same SPI bus by using the multi client 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_slave/firmware.
To build the application, refer to the following table and open the project using its IDE.
| Project Name | Description |
|---|---|
| sam_e70_xult.X | MPLABX project for SAM E70 Xplained Ultra Evaluation Kit |
| sam_e70_xult_freertos.X | MPLABX project for SAM E70 Xplained Ultra Evaluation Kit |
| sam_v71_xult.X | MPLABX project for SAM V71 Xplained Ultra Evaluation Kit |
| sam_v71_xult_freertos.X | MPLABX project for SAM V71 Xplained Ultra Evaluation Kit |
Setting Up the Hardware
The following table shows the target hardware for the application projects.
| Project Name | Description |
|---|---|
| sam_e70_xult.X sam_e70_xult_freertos.X | SAM E70 Xplained Ultra Evaluation Kit |
| sam_v71_xult.X sam_v71_xult_freertos.X | SAM V71 Xplained Ultra Evaluation Kit |
Setting Up SAM E70 Xplained Ultra Evaluation Kit
- To run the demo, the following additional hardware are required:
- Install EEPROM 4 click board on the click board slot on board
- Install another EEPROM 4 click board on to the mikroBUS Xplained Pro board
- Connect the mikroBUS Xplained Pro board on EXT2 header
- Connect a jumper between LED2 and PB08 on J203 header
- Connect the Debug USB port on the board to the computer using a micro USB cable
Setting Up SAM V71 Xplained Ultra Evaluation Kit
- To run the demo, the following additional hardware are required:
- Install EEPROM 4 click boards on to the mikroBUS Xplained Pro boards
- Connect the mikroBUS Xplained Pro boards on EXT1 and EXT2 headers
- Connect the Debug USB port on the board to the computer using a micro USB cable
Running the Application
- Build and program the application using its IDE
- The LED indicates success or failure
- The LED turns ON when the data read from the EEPROMs matches with the data written to the EEPROMs.
| Board | LED Name |
|---|---|
| SAM E70 Xplained Ultra Evaluation Kit | LED2 |
| SAM V71 Xplained Ultra Evaluation Kit | LED0 |