1.25 SDMMC Driver Asynchronous - SDMMC Read Write

This example application shows how to use the SDMMC driver in asynchronous mode to perform block operations on the SD Card Media.

Description

  • This example uses the SDMMC driver in asynchronous mode in both Bare-Metal and RTOS environment to perform Block Erase/Write/Read operations on SD-Card
  • This application writes 60KB (61440 bytes) of data starting at the SD Card memory location 0x2000
  • It then reads and verifies the written data

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/sdmmc/async/sdmmc_read_write/firmware.

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

Project NameDescription
sam_e54_xpro.XMPLABX project for SAM E54 Xplained Pro Evaluation Kit
sam_e54_xpro_freertos.XMPLABX project for SAM E54 Xplained Pro Evaluation Kit

Setting Up the Hardware

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

Project NameDescription
sam_e54_xpro.X

sam_e54_xpro_freertos.X

SAM E54 Xplained Pro Evaluation Kit

Setting Up SAM E54 Xplained Pro Evaluation Kit

  • To run the demo, the following additional hardware are required:
    • SD card
  • Connect the Debug USB port on the board to the computer using a micro USB cable
  • Insert SD Card in the SD Card slot on the evaluation kit

Running the Application

  1. Build and program the application using its IDE
  2. The LED is turned ON when the read data from the SD Card matches with the written data
Refer to the following table for LED name:
BoardLED Name
SAM E54 Xplained Pro Evaluation KitLED0