setup_spi(FALSE) + i2c FORCE_HW on 18F2620 doesent work

[Stefan]

Hi,

have problems with i2c sometimes my PIC 18F2620 is hanging on i2c_start () function. I´m using i2c with FORCE_HW, SLOW but without setup_spi(FALSE). If I use setup_spi(FALSE) then it doesent work.
I´m using 10K pullups on C3 and C4 with 24C256 and PCF8583.

In a thread I found setup_spi(FALSE) in the docu I can't find "FALSE"

The problem (stop on i2c_start()) I can reproduce when I connect to different USB serial adapter (with PL2303) for a while then sometime it does stoping on i2c_start() and waiting.

If I use the software I2C then it it work´s . The init_i2c function I use from the CCS sample, Compiler Version 3.222

I use a software RS232 on B5 and B6.

Is there something to delete, if an error on RS232 to work with I2C.
If I call set_tris_c, is there switched off the spi save ?
I´m not sure if I switch to software I2C to have solved my problem.

Is software I2C better than hardware I2c to use ?

mybe somebody have a answer

great thanks
Stefan

[newguy]

Look for PCM Programmer's reply in this thread:

http://www.ccsinfo.com/forum/viewtopic.php?t=19225&highlight=setupspi+false

[Stefan]

Thanks, I was missanderstandig that thread,
I doent have to use setup_spi thanks. Therefore it work´s.

But what about that, is it better to use software I2c or hardware I2C.
On hardware i2c I became sometimes that problems the PIC stops on i2c_start and on software mybe later or never hope !

To produce my problem I switch from PL2303 to PL2303HX and bag. What has an USB serial Adapter to do with a I2C problem ?

Or is there somtimes the Initialisation going wrong and the port C is spi instead of I2C although I was tristate setting

Stefan