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Discussion Groups | TMS320C28x | xintf ioSpace; how to get extern Data

Technical discussions about the TI C28x DSPs (including the C2810, C2811, C2812, F2801, F2806, F2808, F2810,, F2811, F2812, R2811 and R2812).

  

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xintf ioSpace; how to get extern Data - pasc...@gmail.com - Jan 31 8:20:28 2008



Hi
I have a costume TMS320F2812 Board und and want to read Data from 3 Devices  from the XINTF
Board. This 3 Devices have their own CS.

Device 0
8 Bit Data are connect to XD (7:0)
1 Adr are connect to XA0
CS is connect to XZCS0AND1

Device 1
8 Bit Data are connect to XD (7:0)
1 Adr are connect to XA1
CS is connect to XZCS2

Device 2
8 Bit Data are connect to XD (7:0)
1 Adr are connect to XA2
CS is connect to XZCS6AND7

I tried follow:
ioport volatile unsigned port10000;
and i became an overflow error
because Help of CCS:
I/O Space is limited to 64K range (0x0000 to 0xFFFF).

Witch trick is recommended  to get the Data from the extern Memory to my intern C code?
Maybe with pointers and special Memory Map? How to make a pointer to external Adress-Data Bus
with the right setting of CS?

Thx
Pascal 
New at 2812 DSP

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