R8C/13 Group APPLICATION NOTE Flash Rewrite Using EW1 Mode
R8C/13 Group APPLICATION NOTE Flash Rewrite Using EW1 Mode
R8C/13 Group APPLICATION NOTE Flash Rewrite Using EW1 Mode
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<strong>R8C</strong>/<strong>13</strong> <strong>Group</strong><br />
<strong>Flash</strong> <strong>Rewrite</strong> <strong>Using</strong> <strong>EW1</strong> <strong>Mode</strong> (Data "FFh" Search)<br />
4.1 Function Table<br />
Declaring<br />
Outline<br />
Argument<br />
Use Variable<br />
(Global)<br />
Return Value<br />
Function<br />
Description<br />
void write_address_init(void)<br />
Reset write address to default<br />
Argument Type<br />
Meaning<br />
None<br />
Variable Type<br />
Contents of Use<br />
unsigned char *write_addr<br />
Initial Setting<br />
unsigned char block_select<br />
Initial Setting<br />
Return Value Type Value Meaning<br />
None<br />
Search the empty records. Set the write address (write_addr) and block select (block_select)<br />
Declaring<br />
Outline<br />
Argument<br />
Use Variable<br />
(Global)<br />
Return Value<br />
Function<br />
Description<br />
unsigned char flash_write(unsigned char *data)<br />
Data Write Control<br />
Argument Type<br />
unsigned char *data<br />
Meaning<br />
Table Starting Address of Write Data<br />
Variable Type<br />
Contents of Use<br />
unsigned char *write_addr<br />
Reference/Setting<br />
unsigned char block_select<br />
Reference/Setting<br />
Return Value Type Value Meaning<br />
COMPLETE<br />
Completed successfully<br />
unsigned char PROGRAM_ERR Write Error (1)<br />
ERASE_ERR Erase Error (1)<br />
Update the write address (write_addr) after writing the reecord data. When the block select has no<br />
empty records, erase unused blocks and change the block select (block_select).<br />
<strong>NOTE</strong>S: 1. When write or erase error occurs, PROGRAM_ERR+ERASE_ERR is indicated.<br />
Declaring<br />
Outline<br />
Argument<br />
Use Variable<br />
(Global)<br />
Return Value<br />
Function<br />
Description<br />
unsigned char block_erase(unsigned char *ers_addr)<br />
Block Erase Process<br />
Argument Type<br />
unsigned char *ers_addr<br />
Meaning<br />
Starting Address of Erase Block<br />
Variable Type<br />
Contents of Use<br />
None<br />
Return Value Type Value Meaning<br />
unsigned char<br />
COMPLETE<br />
Completed successfully<br />
ERASE_ERR<br />
Erase Error<br />
Erase the specified block in <strong>EW1</strong> mode<br />
Declaring<br />
Outline<br />
Argument<br />
Use Variable<br />
(Global)<br />
Return Value<br />
Function<br />
Description<br />
unsigned char data_write(unsigned char *write_data)<br />
Data Write Process<br />
Argument Type<br />
unsigned char *write_data<br />
Meaning<br />
Table Starting Address of Write Data<br />
Variable Type<br />
Contents of Use<br />
unsigned char *write_addr<br />
Reference<br />
Return Value Type Value Meaning<br />
unsigned char<br />
COMPLETE<br />
Completed successfully<br />
PROGRAM_ERR Write Error<br />
Write data for one record from write address (write_addr) in <strong>EW1</strong> mode.<br />
REJ05B0444-0110Z/Rev.1.10 August 2004 Page 12 of 25
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