I2C + use fast_IO + set_tris_c()

angel · Joined: 19 Oct 2004 Posts: 40

Hello
I am going to develop a I2C communication and I was wondering if I can use : use fast_IO and set_tris_c
Using the set_tris_c() command, I can decide which pin is input and output. But what happen with a I2C communication?

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

The compiler inserts code to set the SDA and SCL pins to be inputs,
as required by the PIC data sheet. Don't change the TRIS on the
SDA and SCL pins.

angel · Joined: 19 Oct 2004 Posts: 40

so using RC2 and RC3 for a software I2C communication, the code:

#use fast_io(C)
#define I2C_SDA PIN_C2
#define I2C_SCL PIN_C3
#use I2C (master, sda=I2C_SDA , scl=I2C_SCL)
...............................
...............................
set_tris_c(0b00001100);

is it correct?
Thanks