RH850 datasheet(49/66 Pages) RENESAS

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Data Flash Access Library - Type T01, European Release

User Interface (API)

R01US0079ED0103

User Manual

Internally blankcheck operation is split into smaller operations every time the operation crosses a

0x4000 bytes boundary. This means that time to suspend is not going to exceed the time to fully

perform a blankcheck on 0x4000 bytes.

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

Table 7: Request structure usage for blank check command

Structure member

Value

Description

command_enu

R_FDL_CMD_BLANKCHECK

Request a blank check operation

bufAddr_u32

Not used

idx_u32

{uint32_t number}

Input: The virtual start address for performing

blank check in data flash. Must be word (4

bytes) aligned.

Output: Fail address in case of blank check

error, unchanged if the operation finishes with

R_FDL_OK.

cnt_u16

{uint16_t number}

Number of words (4 bytes) to check

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 8: Blank check 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

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