1.13 SPI W25 flash read write
This example shows how to use the QMSPI Peripheral library in SPI (master) mode to perform erase, write and read operation with the onboard W25 Serial Flash memory.
Description
This example uses the QMSPI peripheral library in SPI (master) mode to erase and write an array of values to the W25 Serial 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/spi/master/spi_w25_flash_read_write/firmware .
To build the application, refer to the following table and open the project using its IDE.
| Project Name | Description |
|---|---|
| cec1736_evb.X | MPLABX project for CEC 1736 Development Board |
Setting Up the Hardware
The following table shows the target hardware for the application projects.
| Project Name | Board |
|---|---|
| cec1736_evb.X | MPLABX project for CEC 1736 Development Board |
Setting Up CEC 1736 Development Board
- Connect the USB port P2 on the board to the computer using a micro USB cable
Running the Application
- Build and Program the application using its IDE
- LED indicates success or failure:
- The LED is turned ON when the value read from the W25 Serial Flash memory matched with the written value
- The LED is turned OFF when the value read from the W25 Serial Flash did not match with the written value
| Board | LED Name |
|---|---|
| CEC 1736 Development Board | LED5 |