micromega FPU user defined function call - FCALL

slcott

I am trying to call a user defined function on a micromega fpu. A portion of my code is listed. I am using:

'-------------------- uM-FPU USER DEFINED FUNCTIONS ---------------------------
INIT_REGS           CON     $00    ' user defined FPU function, initialize fpu registers
PROCESS_ADC         CON     $01 ' 
CALC_ADJUSTMENT     CON     $02 ' 
' =========================================================================
  PROGRAM Start
' =========================================================================
Start:
Fpu_Reset
Fpu_Write FCALL, INIT_REGS
Main:
PAUSE 5000
GOTO Main

Is this the correct way to call user defined functions on a micromega fpu. I have already loaded the attached fpu code onto the fpu using the micromega v3 ide. I am trying to sort out if my hardware or software is buggy? Any ideas...?

Post Edited (slcott) : 12/28/2009 8:22:28 PM GMT

slcott

any help greatly appreciated.

JonnyMac

You might want to send a not to Cam Thompson. Are you presently able to communicate with the FPU? If that works, then the other stuff is, as my friend says, a small matter of programming. I haven't use the FPU in a long time and never did get into custom functions.

slcott

does anyone else have any experience with micromega fpu hooking up to an sx chip?

RickB

search for "micromega fpu". The bs2 forum has a lot of hits.

DaveG

You should go to the website: micromegacorp.com/sx.html in order to develop the SPI interface with the chip.
I have successfully used this chip with an SX for quite a while.

Dave