RG14 datasheet(35/56 Pages) RENESAS

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RL78 Family

Chapter 5

User Interface

EEPROM Emulation Library Pack02

R01US0068EJ0100

Rev.1.00

Page 35 of 53

Mar. 28, 2014

FDL_Init

[Function]

FDL initialization processing

[Format]

fdl_status_t __far FDL_Init(const __far fdl_descriptor_t* descriptor_pstr)

CALL !FDL_Init or CALL !!FDL_Init

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

[Pre-conditions]

The FSL and EEL processing must be either not executing or finished.

The high-speed on-chip oscillator has been started up.

[Post-conditions]

Execute the FDL_Open function.

[Cautions]

Be sure to execute this function when starting EEPROM emulation to make it possible to start accessing the

data flash memory.

This function is mutually exclusive with the FSL. Before executing this function, be sure to end FSL. Also,

never use any FSL functions during EEPROM emulation.

To use FSL after this function is executed, the RAM must be reinitialized, so always execute this function

when restarting the EEL.

To execute this function again, always be sure to end EEL.

The descriptor table used for this function cannot be modified. Be sure to use a defined descriptor table.

[Register status after calling this function]

Return Value : C

Corrupted registers: AX (argument), BC (argument)

[Arguments]

Argument

Type

Description

descriptor_pstr

fdl_descriptor_t* (far)

Pointer to the descriptor table

[Return values]

Type

Symbol Definition

Description

fdl_status_t

FDL_OK

Normal end

FDL_ERR_CONFIGURATION

Initialization error. The setting is incorrect. Or

high-speed on-chip oscillator does not run. Make sure

that the defined data has not been changed and the

high-speed on-chip oscillator has been started up.

Remark Assembly language return values are stored in register C.

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