The library on our web site, which I presume Benny found, requires that you reserve two blocks for data storage. As the values of the non-volatile data change, the first flash block is gradually filled up. When it is filled, the data is copied to the second flash block (removing the old unwanted values) and the first block is erased. The procedure is then repeated.

The library was originally written for the Rx2Hxx, but is better suited to the Rx2xx because of it's smaller block size.

Andy
ESAcademy - www.esacademy.com