RH850 datasheet(45/66 Pages) RENESAS

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Data Flash Access Library - Type T01, European Release

User Interface (API)

R01US0079ED0103

User Manual

4.5.1 R_FDL_CMD_ERASE

The erase command can be used to erase a number of Flash blocks defined by a start block and the

number of blocks.

The members of the request structure given to R_FDL_Execute are described in the following table:

Table 3: Request structure usage for erase command

Structure member

Value

Description

command_enu

R_FDL_CMD_ERASE

Request a block erase operation

bufAddr_u32

Not used

idx_u32

{uint32_t number}

Number of the first block to be erased. Flash

blocks are defined by the erase granularity

that is 64 Bytes, e.g.:

block 0: 0x00 ... 0x3F

block 1: 0x40 ... 0x7F

...

cnt_u16

{uint16_t number}

Numbers of blocks to erase

accessType_enu

R_FDL_ACCESS_USER /

R_FDL_ACCESS_EEL

Selects the Flash pool in which the command

will be able to operate.

status_enu

This is an output member. It contains the

status of the operation during and after the

execution. Possible values are described in

the next table.

The following table describes all possible status returns:

Table 4: Erase operation returned status

Status

Background and Handling

R_FDL_BUSY

meaning

Operation started successfully

reason

No problems during execution

remedy

Call R_FDL_Handler until the Flash operation is finished,

reported by the request structure status return value

R_FDL_OK

(1)

meaning

Operation finished successfully

reason

No problems during execution

remedy

Nothing

R_FDL_SUSPENDED

(1)

meaning

An on-going Flash operation was successfully suspended

reason

Suspend processing successfully finished

remedy

Start another operation or resume the suspended

operation

R_FDL_ERR_PARAMETER

(2)

meaning

Current command is rejected

reason

Wrong command parameters:



access is made outside of physically available Data

Flash



command shall operate in User-pool but

accessType_enu is not R_FDL_ACCESS_USER



command shall operate in EEL-pool but

accessType_enu is not R_FDL_ACCESS_EEL



cnt_u16 is 0 or it is too big

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