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 />
4.2.3 Data Write Control Function<br />
flash_write(unsigned char *data)<br />
result(write / erase) is<br />
initialized completely<br />
[Argument]<br />
*data : The starting address of the data which is written<br />
in the record.<br />
Data program process<br />
data_write (data)<br />
Program result<br />
Program error<br />
Set occurrence information of the program<br />
error to the return value<br />
Program<br />
succeeded<br />
result = result | PROGRAM_ERR<br />
Update write address<br />
Set the write address to the starting address in the next<br />
record<br />
The write address is<br />
at the starting address of<br />
the block B ?<br />
Yes (no empty records in the block A)<br />
No<br />
The write address is<br />
at the starting address of<br />
the block A?<br />
Yes (no empty records in the block B)<br />
Block erase process<br />
No<br />
Block erase process<br />
block_erase(BLOCK_A)<br />
block_erase(BLOCK_B)<br />
Erase result<br />
Erase error<br />
Erase<br />
succeeded<br />
Erase result<br />
Erase error<br />
result = result | ERASE_ERR<br />
Erase succeeded<br />
result = result | ERASE_ERR<br />
Block select = Block A<br />
Set the write address to the<br />
starting of the block A<br />
Block select = Block B<br />
Set the write address to the<br />
starting of the block B<br />
return result<br />
REJ05B0444-0110Z/Rev.1.10 August 2004 Page 16 of 25
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