RG14 datasheet(46/56 Pages) RENESAS

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RL78 Family

Chapter 5

User Interface

EEPROM Emulation Library Pack02

R01US0068EJ0100

Rev.1.00

Page 46 of 53

Mar. 28, 2014

EEL_GetSpace

[Function]

This obtains the free EEL block space.

[Format]

eel_status_t

__far EEL_GetSpace(__near eel_u16* space_pu16)

CALL !EEL_GetSpace or CALL !!EEL_GetSpace

Remark Call this function by using ! if placing the EEL at 00000H to 0FFFFH or by using !! if not.

[Pre-conditions]

The FDL_Init,FDL_Open,EEL_Init, and EEL_Open functions, and theEEL_Execute

function(EEL_CMD_STARTUP command ) must have finished normally.

[Post-conditions]

None

[Cautions]

When the EEL pool has been exhausted, 0 is always returned to indicate that there is no free space.

When an error value is returned, the free space information remains unchanged.

[Register status after calling this function]

Return value: C

Corrupted register: AX (argument)

[Arguments]

Argument

Type

Description

space_pu16

eel_u16* (near)

The address at which the free space information of the current

active block is input

[Return values]

Type

Symbol Definition

Description

eel_status_t

EEL_OK

Normal end

EEL_ERR_INITIALIZATION

EEL_Init has not been executed.

EEL_ERR_ACCESS_LOCKED

The EEL_CMD_STARTUP command has not finished normally.

EEL_ERR_REJECTED

A command is being executed.

Remark Assembly language return values are stored in register C.

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