Mornin' Gentle people.

I am trying to find out why my PIC452's only move SPI data from master
to slave.
I can successuflly send commands to the slave from the master,
and the logic analyzer shows the timing of the signals to be exactly
what I expect.

BUT...  I never see any data FROM the slave to the master.  (Slave SDO
pin)
I have a default byte which is stuffed into the SSPBUF, to give me
something to
see on the analyzer (As well as "real" data when commanded.).
But, it's always a low level.

SDO is not shorted to ground.
The TRISC bit 5 is cleared.
No Collision.

(Another problem:  is MPLAB NEVER shows the TRIS bits for any port above
B!)
(Even on RESET!  TRISC is supposed to be all ones, but it still shows
all zeros!)
TRISA and TRISB are correct!

O.K.  Do your magic, show me where (Again) I missed a vital clue.
--
  *
  |  __O    Thomas C. Sefranek  tcs@cmcorp.com
  |_-\<,_   Amateur Radio Operator: WA1RHP
  (*)/ (*)  Bicycle mobile on 145.41, 448.625 MHz

ARRL Instructor, Technical Specialist, VE Contact.
http://hamradio.cmcorp.com/inventory/Inventory.html
http://www.harvardrepeater.org

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