Hi Sean,
My application uses a graphic toolkit I wrote myself - anti aliased fonts and
all - and is coded in C. The FPGA graphic core used on the 7300 & 7390 makes it
easy to implement the type of graphics I needed for my application, and coding
it myself I have control over the performance.
With regard to the UPS, I originally looked at supercaps, but the amount of
backup time I was looking for (30s+) would be costly to provide by a cap.
What I've been working on is to use the fact that the system will be powered
from 24V in normal operation, but will operate at lower voltages. I've found a
chip from Linear Tech (LTC4412HV) which will switch in a 12V battery when the
main power is removed, as long as the 7390 is asking for backup. I'll implement
a low current trickle charger for the battery to keep it topped up, and to
offset the self-discharge. The UPS will probably be a PCB which mounts on the
back of the 7390, with two power inputs, 24V and Battery.
Regards,
PJE
--- In sean machin <> wrote:
>
> Thanks Peter,
>
> What software are you using for your GUI? I would like to use Java AWT with
> customized bitmaps (which has worked well on a previous project), but it
> might be too slow for this board.
>
> Also, are you custom designing your UPS or using an off the shelf
> product? I've always thought
> a PC/104 based supercap UPS would be a good product for ensuring safe
> shutdowns.
>
> Sean
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