Is it possible to pilot 2 instances of the FLASH Gadgeteer module on the same SPI Bus ?
As the Flash can not comply multiplt R/W on the same sectors, and to avoid using MicroSD just for couple MB of datas, I was imagining to have 2 flash :
One for configuration files that will be stored inline,
One for frequently changing datas that will use the FS, and then as it is each time a complete replacment, I will erase the FLASH before writing these datas…
Thanks for your feedback
It should work using two S sockets
@ Gus -
OK, you mean 2 socket on the same SPI, but with a different SSEL Pin 6 assignment ?
That’s it ?
Over that technical point, do you think it is a good idea if I do not need GB of data storage, or there’s an issue I do not see ?
If your device has USB host support, then I would consider using a thumb drive instead of two flash modules. Not sure what the advantages of flash module, except perhaps less power.
@ Mike -
The idea is also to have something “discret”, so that and USB stick is not convinient. If you thnik it is poor of performance with FLASH, than I keep my first idea of a microSD Card. It is cheap, discret, and can stay lifetime in the box…
I was not saying anything bad about flash technology.
From my view, the flash module costs about $15 and you get 4MB of memory.
For $5 you can get a USB Host module, and then you have a choice of
memory sizes in the GBs starting around $5.
There is also GHI support for USB Host mass storage versus a community supported file
system for the flash module.
OK, if that is he price, a Kingston microSD is also 5 € for an 8GB. Would be fine against 15$ for the FLASH. and FS is standard on SD…
BTW, USB drives come in many shapes. Here is a picture of the usb drive I use in my timesharing system. It is very small and discret. It is in lower right corner of board.