QSPI Flash File IO

Table of Contents

• Introduction
• Supported Combinations
• Steps to Run the Example
• See Also
• Sample Output

Introduction

This example demonstrates basic read write file operation to the QSPI flash using LittleFS library. Wrapper file operation APIs for the littleFS driver files such as program, read, erase and sync are implemented using Flash APIs. The underlying QSPI reads and writes are taken care by the flash APIs. The block device configuration for LittleFS library is provided from the example itself.

The example writes a counter called fileWriteCounter into a file called 'test_file_write_count'. This counter is initialized to 0 and incremented for APP_QSPI_FILE_WRITE_COUNT number of iterations. This value is read to check if the counter is actually incremented.

When fileWriteCounter matches the given APP_QSPI_FILE_WRITE_COUNT macro value, test result is passed otherwise failed.

Supported Combinations

Parameter	Value
CPU + OS	r5fss0-0 freertos
	r5fss0-0 nortos
Toolchain	ti-arm-clang
Boards	am263x-cc, am263x-lp
Example folder	examples/drivers/qspi/qspi_flash_file_io

Steps to Run the Example

• When using CCS projects to build, import the CCS project for the required combination and build it using the CCS project menu (see Using SDK with CCS Projects).
• When using makefiles to build, note the required combination and build using make command (see Using SDK with Makefiles)
• Launch a CCS debug session and run the executable, see CCS Launch, Load and Run

See Also

QSPI

Sample Output

APP_QSPI_FILE_WRITE_COUNT: 32
fileWriteCounter: 1
fileWriteCounter: 2
fileWriteCounter: 3
fileWriteCounter: 4
fileWriteCounter: 5
fileWriteCounter: 6
fileWriteCounter: 7
fileWriteCounter: 8
fileWriteCounter: 9
fileWriteCounter: 10
fileWriteCounter: 11
fileWriteCounter: 12
fileWriteCounter: 13
fileWriteCounter: 14
fileWriteCounter: 15
fileWriteCounter: 16
fileWriteCounter: 17
fileWriteCounter: 18
fileWriteCounter: 19
fileWriteCounter: 20
fileWriteCounter: 21
fileWriteCounter: 22
fileWriteCounter: 23
fileWriteCounter: 24
fileWriteCounter: 25
fileWriteCounter: 26
fileWriteCounter: 27
fileWriteCounter: 28
fileWriteCounter: 29
fileWriteCounter: 30
fileWriteCounter: 31
fileWriteCounter: 32
fileWriteCounter reaches APP_QSPI_FILE_WRITE_COUNT
All tests have passed!!