Over 65535 bytes in external EEPROM.

shuffleshu · Joined: 28 Mar 2013 Posts: 5

In my projects, I often use an external FRAM FM25W256 with the fm25c256.lib library (256kbit = 32kbytes). The EEPROM size is indicated on the line $eepromsize = &H8000 (32768 bytes). This memory is not enough for new projects. I want to use FM25V20A (2mbit = 256kbytes), but BASCOM cannot address more than &H10000 (65535 bytes) for EEPROMSIZE command.
How can you get around this? Has anyone used SPI FRAM over 256mbit together with the library?

(BASCOM-AVR version : 2.0.8.4 )

albertsm · Joined: 09 Apr 2004 Posts: 5922 Location: Holland

you best write some custom subs/function. the normal address is 16 bit and extending it to 24 bit means a lot of work. especial with testing.
using a sub to write and function to read is way simpler.

shuffleshu · Joined: 28 Mar 2013 Posts: 5

Thanks for the answer.
Can we hope that this will happen someday? )
Applications require more and more memory. FRAM is ideal for many applications.

albertsm · Joined: 09 Apr 2004 Posts: 5922 Location: Holland

you are the first that asks. so it will not happen quick.
but you can always contract us to have it made. this is however not a free service.