RH850 datasheet(46/66 Pages) RENESAS

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Data Flash Access Library - Type T01, European Release

User Interface (API)

R01US0079ED0103

User Manual

Status

Background and Handling

remedy

Refrain from further Flash operations and investigate in the

root cause

R_FDL_ERR_PROTECTION

meaning

Current command is rejected

reason



To gain robustness, the parameter check is repeated

right before Flash modification and returns the

protection error in case of a violation (e.g. due to an

unwanted variable modification)



Other device specific protection mechanisms (e.g.

security unit like ICU or FHVE protection mechanisms

prevent Flash operations.

remedy

Refrain from further Flash operations and investigate in the

root cause

R_FDL_ERR_REJECTED

(2)

meaning

Current command is rejected

reason

Another operation is ongoing

remedy

Request again the command when the preceding

command has finished

R_FDL_ERR_ERASE

(1)

meaning

At least one bit within the specified blocks is not erased

reason

Hardware defect: one or more Flash bits could not be

erased completely

remedy

A Flash block respectively the complete Data Flash should

be considered as defect

R_FDL_ERR_INTERNAL

(1)

meaning

A library internal error occurred, which could not happen in

case of normal application execution

reason



Application bug (e.g. program run-away, destroyed

program counter) or hardware problem



Only on older F1x devices: failed ID code

authentication supplied in the device descriptor. See

section 4.2 ”Run-time configuration” for details about

ID code

remedy

Refrain from further Flash operations and investigate in the

root cause

(1) R_FDL_Execute will never set this status code

(2) R_FDL_Handler will never set this status code

4.5.2 R_FDL_CMD_WRITE

The write command can be used to write a number of data words located in the RAM into the Data Flash

at the location specified by the virtual target address.

Note:

It is not allowed to “Overwrite” data, which means writing data to already partly or completely written Flash

area. Please always erase the targeted area before writing into it.

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

Table 5: Request structure usage for write command

Structure member

Value

Description

command_enu

R_FDL_CMD_WRITE

Request a write operation

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