Nios® V Processor Software Developer Handbook

ID 743810
Date 10/02/2023
Public

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Document Table of Contents

13.1.1.49. alt_read_flash()

Prototype

int alt_read_flash(alt_flash_fd* fd,

int offset,

void* dest_addr,

int length)

Commonly Called By

C/C++ programs

Device drivers

Thread-safe

No.

Available from ISR

No.

Include

<sys/alt_flash.h>

Description

The alt_read_flash() function reads data from flash. length bytes are read from the flash fd, starting offset bytes from the beginning of the flash and are written to the location dest_addr.

Call this function only when operating in single-threaded mode.

The only valid values for the fd parameter are those returned from the alt_flash_open_dev function. If any other value is passed, the behavior of this function is undefined.

Return

The return value is zero on success and nonzero otherwise.