vfs/module/avr/progmem.h File Reference

#include <avr/pgmspace.h>
#include <zrtos/error.h>
#include <zrtos/types.h>
#include <zrtos/vfs_plugin.h>

Include dependency graph for vfs/module/avr/progmem.h:

Go to the source code of this file.

Data Structures
struct	_zrtos_vfs_module_avr_progmem_inode_t

Typedefs
typedef struct _zrtos_vfs_module_avr_progmem_inode_t	zrtos_vfs_module_avr_progmem_inode_t

Functions
zrtos_error_t	zrtos_vfs_module_avr_progmem__on_read (zrtos_vfs_file_t *thiz, char *path, void *buf, size_t len, zrtos_vfs_offset_t offset, size_t *out)
	ZRTOS_VFS_PLUGIN__INIT (zero, ZRTOS_VFS_PLUGIN__ON_READ(zrtos_vfs_module_avr_progmem__on_read))

Typedef Documentation

zrtos_vfs_module_avr_progmem_inode_t

typedef struct _zrtos_vfs_module_avr_progmem_inode_t zrtos_vfs_module_avr_progmem_inode_t

Function Documentation

zrtos_vfs_module_avr_progmem__on_read()

zrtos_error_t zrtos_vfs_module_avr_progmem__on_read	(	zrtos_vfs_file_t *	thiz,
		char *	path,
		void *	buf,
		size_t	len,
		zrtos_vfs_offset_t	offset,
		size_t *	out
	)

Definition at line 27 of file vfs/module/avr/progmem.h.

 {
    zrtos_error_t ret = ZRTOS_ERROR__FAULT;
    zrtos_vfs_module_avr_progmem_inode_t *mod = zrtos_vfs_file__get_inode_data(
        thiz
    );
    uint32_t addr = offset;
    uint8_t *data_ptr = data;

    if(offset > ZRTOS_TYPES__UINT32_MAX){
        ret = ZRTOS_ERROR__INVAL;
        goto L_OUT;
    }

    if(zrtos_types__uint32_is_valid_address_range(
         mod->start_addr
        ,mod->end_addr
        ,addr
        ,&len
    )){
        *ret = len;
        for(;len--;addr++){
            *data_ptr++ = pgm_read_byte_far(addr);
        }
        ret = ZRTOS_ERROR__SUCCESS;
    }

L_OUT:
    return ret;
}

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ZRTOS_VFS_PLUGIN__INIT()

ZRTOS_VFS_PLUGIN__INIT	(	zero	,
		ZRTOS_VFS_PLUGIN__ON_READ(zrtos_vfs_module_avr_progmem__on_read)
	)

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