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pic16f1787 i2c init problem[solved]

 
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kosopet



Joined: 12 Dec 2016
Posts: 2

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pic16f1787 i2c init problem[solved]
PostPosted: Mon Dec 12, 2016 4:44 am     Reply with quote
Hello, i am trying just to get i2c initialization on pic16f1787. I use mplab 8.92 ide and ccs v.4 c compiler. Here is my short init code:

Code:
#include <16F1787.h>
#device PIC16F1787
 
 
#use i2c(MASTER, SDA=PIN_C4, SCL=PIN_C3, FAST=1000000) 

 
#use delay(clock=20000000)

 int8 a;


void main()   {


set_tris_c(0b00011000);

while(1)
{
a=3;
}


}


than i run mplab sim debugger, and look to - Watch window in mplab, i can see only:

ssp1add = 0x00
ssp1con1 = 0x00
ssp1con2 = 0x00
ssp1con3 = 0x00

so i think that by some reason i2c initialization dont work.

Last edited by kosopet on Mon Dec 12, 2016 5:04 am; edited 1 time in total
kosopet



Joined: 12 Dec 2016
Posts: 2

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i2c init
PostPosted: Mon Dec 12, 2016 5:04 am     Reply with quote
just solved it was needed FORCE_HW )
Ttelmah



Joined: 11 Mar 2010
Posts: 19510

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PostPosted: Mon Dec 12, 2016 5:48 am     Reply with quote
Or. use:


#use i2c(MASTER, I2C1, FAST=1000000)

This selects the hardware pins, and generates FORCE_HW as well.
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