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Hardware SPI [solved]

 
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SH



Joined: 06 Jul 2011
Posts: 3

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Hardware SPI [solved]
PostPosted: Wed Jul 06, 2011 7:36 am     Reply with quote
I use a 18F26J50 with SPI interface to a 23K256 Serial SRAM
Compiler version 4.114

I want to use the hardware SPI and want to remap the output pins:
Code:

#pin_select  SDI2=PIN_B0
#pin_select SDO2=PIN_B3
#pin_select SCK2=PIN_B2
#USE SPI (MASTER, SPI2, MODE=0, BITS=8, STREAM=SPI_23K256, MSB_FIRST)

I can see that that the SFR RPINR21(SDI2) is set to 3 as expected.
The RPOR5 is not set to 10(SCK2) and RPOR6 is not set to 9(SDO2) as expected, and the SPI2 hardware do not work.

If I use software SPI:
Code:

#use SPI( MASTER,DI=PIN_B0, DO=PIN_B3, CLK=PIN_B2, STREAM=SPI_23K256,SAMPLE_RISE, BITS=8).

The communication with the 23K256 works fine.

What can the problem be ?
SH



Joined: 06 Jul 2011
Posts: 3

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Re: Hardware SPI
PostPosted: Sat Jul 16, 2011 7:27 am     Reply with quote
SH wrote:


What can the problem be ?


I have solved the problem:

set_tris_b(0b11110001);

Now Hardware SPI works.
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