Art
- 2nd November 2013, 12:44
Hi Guys,
Has anyone considered writing an FPU for a pic to run side by side another pic
so that a PBP program can request results for floating point operations (trig functions) ?
I figure a 4 or 8 bit interface to a fast chip would be much faster than having the
same chip doing cordic trig, but of course, would add expense by requiring another chip.
I'm working on a project currently for dsPic33FJ128GP802, which is pin for pin compatible
with some other devices of more or less specification such as memory space.
These kind of operations are child's play in Microchip's C, but I never thought to make a
slave math device for another pic running a PBP program.
Only issue is the device I'm using is 3.6Volts (or 3.3).. I didn't have to make the circuit,
I just have to expand on the thing which is a single chip web server.
I haven't looked into a PBP compatible pic that operates on the lower voltage.
Are these abundant?
Cheers, B.
Has anyone considered writing an FPU for a pic to run side by side another pic
so that a PBP program can request results for floating point operations (trig functions) ?
I figure a 4 or 8 bit interface to a fast chip would be much faster than having the
same chip doing cordic trig, but of course, would add expense by requiring another chip.
I'm working on a project currently for dsPic33FJ128GP802, which is pin for pin compatible
with some other devices of more or less specification such as memory space.
These kind of operations are child's play in Microchip's C, but I never thought to make a
slave math device for another pic running a PBP program.
Only issue is the device I'm using is 3.6Volts (or 3.3).. I didn't have to make the circuit,
I just have to expand on the thing which is a single chip web server.
I haven't looked into a PBP compatible pic that operates on the lower voltage.
Are these abundant?
Cheers, B.