Problem with I2C as PIC 18F2620 hangs on i2c_start () function

[ahmet2004]

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

 

[petarpav]

18f2620 picù

Hi. Here is part of revision history on CCS compiler versions:

"3.223 A problem with I2C_START() on some parts is fixed"

Best Regards.